Entries |
Document | Title | Date |
20080245730 | Process and Apparatus for Treating Nitrogeneous Liquor - A process and apparatus for treating an aqueous nitrogeneous liquor by performing ammonia oxidation and denitrification using a biosludge comprising anammox bacteria and ammonia-oxidizing bacteria, which process and apparatus can serve to obtain treated liquor of high water quality at a high treating efficiency and a high yield of ammonium nitrogen removal with easy control of supply rate of oxygen-containing gas. The technique comprises the steps of charging a reaction vessel having stored therein a biosludge comprising anammox bacteria and ammonia-oxidizing bacteria present as a suspension with a definite amount of the liquor to be treated, supplying thereto an oxygen-containing gas at a rate not obstructing growth of the anammox bacteria to thereby cause ammonia oxidation of ammonium nitrogen into nitrite nitrogen by the ammonia-oxidizing bacteria and denitrification by the anammox bacteria simultaneously, or performing the denitrification in steps by charging the reaction vessel with a part amount of one treating batch of the liquor to be treated, whereupon supply of the oxygen-containing gas is stopped and the reaction liquor is replenished with the rest amount of the liquor to be treated. The supply of the oxygen-containing gas is stopped at a point of time at which the observed value of dissolved oxygen concentration or of ORP of the reaction liquor in the reaction vessel changes abruptly. | 10-09-2008 |
20080251450 | Waste water treatment - The present invention relates to wastewater treatment in general and to methods of controlling odors and degrading compounds contained in wastewater in particular. | 10-16-2008 |
20080257820 | Apparatus and Method for Treating Fgd Blowdown or Similar Liquids - A process has steps of one or more of aerobic treatment to remove COD and nitrify a waste stream, anoxic treatment to denitrify a waste stream, anoxic treatment to remove selenium and anaerobic treatment to remove heavy metals and sulphur. The process may be used to treat, for example, FGD blow down water. The process may further include one or more of (a) membrane separation of the waste stream upstream of the anoxic digestion to remove selenium, (b) dilution upstream of the biological treatment step, (c) physical/chemical pretreatment upstream of the biological processes or dilution step to remove TSS and soften the waste stream, or (d) ammonia stripping upstream of the biological treatment steps or dilutions step. These processes may be provided in a variety of suspended growth or fixed film reactors, for example a membrane bioreactor or a fixed film reactor having a GAC bed. Processes for biological treatment of inorganic compounds in a fixed medium reactor is described including steps of one or more of maintaining desired ORP levels, optionally by controlling nutrient addition, and removing solids or gas bubbles from the medium bed. | 10-23-2008 |
20080264855 | METHOD AND APPARATUS FOR TREATING WASTEWATER - This invention is directed to a wastewater treatment system having a fluidizable media carrying anoxic bacteria in a first treatment zone and a filter membrane positioned in a second treatment zone. A wastewater is contacted with the fluidizable media and further contacted with air and a filter membrane. | 10-30-2008 |
20080314826 | Membrane Supported Biofilm Process for Autotrophic Reduction - A hollow gas transfer fibre is arranged in tows and potted into a module. The module may be used to treat wastewater by supplying hydrogen containing gas via the interior of the fibers to a biofilm present on an exterior surface of the fibers. | 12-25-2008 |
20090001016 | Apparatus for Treatmenting of Sewage Using Semi-Batch and Method Thereof - Disclosed relates to an apparatus for treatmenting of sewage using semi-batch comprising: an aeration tank; a thickening tank; a dephosphorization tank; a first reactor basin and a second reactor basin, each including an opening portion, formed by opening a side wall thereof to be connected with a lateral portion of the aeration tank, and an aeration unit installed therein; a flow distribution pipe including a start pipe and a pair of flow pipes; a pair of stirrers, each being established at one side of the auxiliary pipes in each of the pair of flow pipes, operating in turn to stir the dephosphorized sewage overflowing from the dephosphorization; and a decanter, installed cross the top of the opposite side to the opening portions of the first reactor basin and the second reactor basin. | 01-01-2009 |
20090008324 | INTERMITTENT ANAEROBIC BIOLOGICAL TREATMENTS OF RAINFALL-INDUCED SEWERAGE - The present invention relates to the application of the biological adsorption and biological oxidation ability of both conventional wastewater treatment biological selection technology and, if desired, chemically-enhanced wastewater treatment biological selection technology to remove pollutants from precipitation-generated flows collected by a combined sanitary sewer system, a separate sanitary sewer system, and/or a combination of both systems for: (1) the biological adsorption and oxidation of suspended and dissolved pollutants as measured by standard methods tests for carbonaceous biochemical oxygen demand, and/or (2) the biological adsorption of all other dissolved non-conservative and conservative pollutants as measured by all other standard methods tests for such pollutants. | 01-08-2009 |
20090014383 | On/off site water reclamation system - This on/off-site WATER RECLAMATION SYSTEM is disclosed suitable for domestic or other sewage. After separation of the settleable solids, the effluent is passed into a basin holding particles of a media through (around) which the effluent travels. The media beds substantial reduce the amount of the suspended solids (SS) and BOD (biological oxygen demand) and FC (fecal coliform) by bacterial action and oxygenation as well as substantially reducing the nitrate (N) level and provide a high oxygen content filtrate discharge. The filtrate is collected and dispersed over the surface of the same media bed for travel there through a second or more times. The effluent carries oxygen from the air into the media. The media retains the effluent until the surface tension is overcome by gravity and discharged from the system. This on/off-site WATER RECLAMATION SYSTEM produces a quality discharge to meet the requirements. | 01-15-2009 |
20090039015 | Method of Wastewater Treatment with Excess Sludge Withdrawal Reduced - A method of wastewater treatment that reduced equipment cost and running cost and realizes high efficiency implementation and further tank miniaturization, and that reduces excess sludge withdrawal. There is provided a method of wastewater treatment with excess sludge withdrawal reduced, characterized in that there are installed an aeration tank wherein wastewater is brought into contact with carrier particles under aerobic conditions, a total oxidization tank and a sedimentation tank, and that operation is made while maintaining the BOD sludge load in the total oxidization tank at 0.08 kg-BOD/Kg-MLSS*day or smaller, and that a coagulant is charged in the complete oxidization tank in order to improve the setting in the sedimentation tank. | 02-12-2009 |
20090078646 | Conditioning System for Activated Sludge Wastewater Treatment Processes - Wastewaters are treated by an activated sludge process that includes combining wastewater with bacteria-laden sludge in an activated sludge tank to form a mixed liquor, separating the mixed liquor into a clear effluent and activated sludge stream, pretreating at least a portion of the activated sludge stream in a conditioning tank, transferring at least a portion of the activated sludge stream in the conditioning tank to an interchange bioreactor operating in batch or continuous flow mode, processing the activated sludge stream within the interchange bioreactor by selecting desired growth conditions to cultivate at least one type of bacteria in the activated sludge stream, and returning at least a portion of the activated sludge stream in the bioreactor to the activated sludge tank. The process may further include a sidestream reactor to remove phosphates from the activated sludge stream leaving the interchange bioreactor. | 03-26-2009 |
20090090670 | WASTEWATER TREATMENT SYSTEM AND METHOD - The invention is directed to a wastewater treatment system having an anoxic biological treatment zone, an aerobic biological treatment zone and a separator. The concentration of oxygen in streams within the system is strategically managed for improved removal of nutrient from the wastewater. A source of biodegradable carbon may be introduced to reduce the concentration of oxygen within the system. An effective treatment time under anoxic or aerobic conditions may further be varied. | 04-09-2009 |
20090101573 | Waste water treatment apparatus and waste water treatment method - In waste water treatment apparatus and method, a mineral mixing tank receives biologically treated water, sludge which is generated by biological treatment, and mineral sludge which contains calcium and so on from a settling tank. A mineral pump returns the sludge and the treated water from the mineral mixing tank to a raw water tank. An air-lift pump circulates treatment water between a reaeration tank having a semi-anaerobic section and a denitrification tank. In circulation of the treatment water between the reaeration tank and the denitrification tank, the semi-anaerobic section alleviates the change of environment for microorganisms and thereby realizes the environment easy to propagate for the microorganisms. The air-lift pump allows the agitation with low energy consumption even when the microorganisms are cultured up to a high concentration thereof. | 04-23-2009 |
20090127188 | WASTE GAS/WASTEWATER TREATMENT EQUIPMENT AND METHOD OF TREATING WASTE GAS/WASTEWATER - Waste gas/wastewater treatment equipment treats waste gas in a scrubber | 05-21-2009 |
20090145844 | SEQUENCING BATCH MEMBRANE BIOREACTOR AND METHOD THEREOF - A sequencing batch membrane bioreactor is provided, comprising a wastewater reservoir, at least one sequencing batch bioreactor, and a membrane reactor. The wastewater reservoir collects and stores wastewater. The sequencing batch bioreactor receives the wastewater in batches from the wastewater reservoir for performing a stirring and aeration process to remove ammonia-based nitrogen, phosphoric ions and organic substance from the wastewater. The membrane reactor is disposed outside of the sequencing batch bioreactor, wherein the wastewater is introduced from the sequencing batch bioreactor to the membrane reactor, treated with solid-liquid separation, and discharged. | 06-11-2009 |
20090152192 | Novel Arrangement of Denitrification Reactors in a Recirculating Aquaculture System - The present invention relates to a novel arrangement of denitrification reactors for removal of nitrate compounds in a recirculating aquaculture system. The novel arrangement of an aquaculture system of the present invention includes positioning one or more anaerobic denitrification reactors upstream of aerobic nitrification and degassing processes. One aspect of the present invention includes a flow of aqueous medium from aquatic species rearing tanks towards one or more denitrification reactors. Another aspect of the present invention includes flow of aqueous medium from aquatic species rearing tanks to a solids removing filter or mechanical filtration means for removal of solid waste matter or biomass prior to flow of aqueous medium towards one or more denitrification reactors. In a sequence of components comprising a system of the present invention, treated and denitrified aqueous medium exiting one or more denitrification reactors is directed towards a solids removing filter wherein treated and denitrified aqueous medium combines with untreated aqueous medium. Combined untreated aqueous medium and denitrified aqueous medium exits a solids removing filter and is directed towards an aerobic nitrification unit. Aqueous medium exiting the aerobic nitrification unit is degassed and oxygenated and returned to aquatic species rearing tanks. A system of the present invention which utilizes denitrification reactors positioned upstream of aerobic nitrification has advantages over existing aquaculture systems which use denitrification in reduction of nitrate concentrations. This results in greater mitigation of water chemistries and compounds which are harmful to aquatic species and more efficient use and conservation of water resources. | 06-18-2009 |
20090218280 | Wastewater Treatment Method and System - A method for treating wastewater is disclosed. In step a), a predetermined volume of the wastewater is mixed in a first receptacle with a predetermined volume of sludge-containing returned denitrified mixed liquor under anaerobic conditions for a predetermined time period to produce an anaerobically mix rich in released phosphates. In step b), at least a portion of the anaerobically treated mix is then treated in a second receptacle under aerobic and anoxic conditions to produce a part-treated mix. In step c) at least a portion of solids from the part-treated mix to produce a low reduced-solids effluent. Steps b) and c) are sequential and cyclical and the treatment in step a) occurs during one or both of steps b) and c). In an alternative method, a predetermined volume of wastewater is treated under aerobic and anoxic conditions to produce a part-treated mix. The predetermined volume of wastewater is treated in two or more distinct portions, and a predetermined time period elapses between the introduction of each of the portions. In this method, carbon present in one or more of a second or subsequent said distinct portion(s) is available for use in treatment under said anoxic conditions during step a). | 09-03-2009 |
20090255870 | Method and System for Treating Organically Contaminated Waste Water - A method and system for treating organically contaminated waste water for reuse, by: introducing the waste water into a sedimentation tank to remove a significant portion of the organic contaminants; circulating the waste water from the sedimentation tank to an anoxic mixing chamber for denitrifying the waste water; circulating the waste water from the anoxic mixing chamber to a rotary biological contactor to nitrify the waste water by aeration, and to assimilate organic materials therein by bringing the waste water into contact with a biological medium, to thereby output nitrified waste water; and recirculating a portion of the nitrified waste water outputted from the rotary biological contactor back to the anoxic mixing chamber to enhance the nitrifying and denitrifying of the waste water. | 10-15-2009 |
20090272687 | Method of Deep Sewage Treatment without Sludge Discharge and Device Therefor - A deeply sewage treating method and apparatus without sludge discharging is disclosed by means of the physical, chemical and biological methods. Proper sewage treating agent with powerful adsorbing capacity, organic matter decomposing and oxidizing capacity and settling capacity is selected based on the quantity of sewage and pollutant characteristic of the sewage to be treated. Sewage is treated through an integrative function tank that comprises a grille primary tank ( | 11-05-2009 |
20090283471 | Apparatus and Method for Treating Organic-Containing Wastewater - In treating organic-containing wastewater by a biological treatment in a stage prior to a advanced treatment such as membrane separation or the like, the amount of the biological metabolites produced in the biological treatment step is reduced to reduce the amount of the organic substances flowing into the advanced treatment step in a latter stage, thereby making the advanced treatment stable and efficient and efficiently recovering treated water of high quality. Water anaerobically biologically treated in an anaerobic reaction tank | 11-19-2009 |
20090294355 | Method and Apparatus for the Anaerobic Treatment of Waste Water - The present invention relates to a process for the purification of waste water, in particular for the continuous purification of waste water in papermaking, where waste water to be purified is fed to an anaerobic reactor ( | 12-03-2009 |
20100018919 | SYSTEM FOR TREATING RECIRCULATION NUTRIENT USING FLOATING MEDIA - A system for treating recirculating nutrients using floating media is disclosed. The system is operated in such way that wastewater influent path is changed between a first mode and a second mode at a certain period of time interval. Wastewater influent at the first mode sequentially flows into a first anoxic tank, a second anoxic tank, and an aerobic tank. Wastewater influent at the second mode sequentially flows into the second anoxic tank, the first anoxic tank, and the aerobic tank. Part of the wastewater that flows into the aerobic tank bypasses the first anoxic tank and the second anoxic tank. Part of the wastewater, which flows from the aerobic tank into the first anoxic tank or from the aerobic tank into the second anoxic tank, continuously bypasses the aerobic tank through an internal recirculation pump. | 01-28-2010 |
20100038310 | Waste Water Treatment Method - Systems and methods have been developed for reclaiming water contaminated with the expected range of contaminants typically associated with produced water, including water contaminated with slick water, methanol and boron. The system includes anaerobically digesting the contaminated water, followed by aerating the water to enhance biological digestion. After aeration, the water is separated using a flotation operation that effectively removes the spent friction reducing agents and allows the treated water to be reclaimed and reused as fracturing water, even though it retains levels of contaminants, including boron and methanol, that would prevent its discharge to the environment under existing standards. The treated water may further be treated by removing the methanol via biological digestion in a bioreactor, separating a majority of the contaminants from the water by reverse osmosis and removing the boron that passes through the reverse osmosis system with a boron-removing ion exchange resin. | 02-18-2010 |
20100051541 | BIOREMEDIATION METHOD FOR ACCELERATED BIOLOGICAL DECOMPOSITION OF PETROLEUM HYDROCARBONS IN SEA ICE-COVERED POLAR REGIONS, AND BACTERIA AND ENZYME MIXTURES AS AGENTS FOR CARRYING OUT SAID METHOD - A bioremediation method for accelerated biological degradation of petroleum hydrocarbons in a sea ice-covered polar region comprising contacting the petroleum hydrocarbons with an inoculum. The inoculum includes a bacterial mixture, nutrients, and an environmentally friendly carrier material. The bacterial mixture includes a plurality of cold-adapted autochthonous bacterial strains, wherein each of the bacterial strains are active at an ambient temperature of −3° C., and wherein each of the bacterial strains has a different temperature tolerance range, a different salinity tolerance range, a different degradation spectrum, and a different potential to emulsify oil. Bacteria of the bacterial strains are immobilized on the environmentally friendly carrier material. | 03-04-2010 |
20100059437 | Passive Underground Drainfield For Septic Tank Nutrient Removal Using Functionalized Green Filtration Media - Methods, systems and compositions for a green sorption media for bioretention soil amendments in drainfields for on-site waste water systems filled with the green sorption media to foster an anaerobic or anoxic environment saturated. The green sorption media includes one or more recycled materials, including tire crumb, sawdust, orange peel, coconut husks, leaf compost, oyster shell, soy bean hulls and one or more naturally occurring materials including peat, sands, zeolites, and clay. The wastewater filtration system for a passive drainfield includes the green sorption material mixture, a cell including baffled compartments and a riser, the cell filled with green sorption material mixture to provide an alternating cycle of aerobic and anoxic environments, an influent distribution system to distribute the influent over the cell, and a piping system arranged for dosing the cell to sustain the functionality of the green sorption material mixture to remove nutrient content in wastewater. | 03-11-2010 |
20100072130 | CONTAMINATED INFLOW TREATMENT WITH MEMBRANE DISTILLATION BIOREACTOR - A membrane distillation bioreactor ( | 03-25-2010 |
20100072131 | MEMBRANE BIOREACTOR - The present invention relates to wastewater treatment facilities, and more particularly to an improved membrane bioreactor for treatment of wastewater. In one embodiment, a membrane bioreactor for treatment of wastewater includes first and second anoxic basins for anoxic treatment of such wastewater, and first and second aerobic basins for aerobic treatment of such wastewater. The bioreactor also includes a first flow path connecting the first anoxic basin and the first aerobic basin, and a second flow path connecting the second anoxic basin and the second aerobic basin, for flow of the wastewater from the respective anoxic basin into the respective aerobic basin. The bioreactor also includes a membrane chamber with a plurality of membrane tanks, the membrane chamber being arranged in series with the aerobic basins, and the membrane tanks being arranged in parallel with each other, and third and fourth flow paths connecting the membrane chamber to the first and second aerobic basins. The membrane chamber may extend into the aerobic basin. | 03-25-2010 |
20100084337 | APPARATUS AND METHODS FOR CONTROL OF WASTE TREATMENT PROCESSES - Waste-treatment processes are enhanced through generation and introduction of specific biological populations customized to perform or favor specific tasks either during the main process, for the formation or precipitation of certain biological nutrients, or to accomplish solids formation reduction in a post-treatment process. These bacteria may be grown from specialized mixes of activated sludge and waste influent by exposing these materials to controlled environments (e.g., in an off-line treatment area). They may then be returned to the main process to perform certain tasks such as converting particulate cBOD into soluble cBOD for utilization, to reduce high solids yield organisms by supplementing the population characteristics with low yield organism characteristics, to provide biological nutrients or oxygenation assistance, to improve nitrification/denitrification efficiency, or to disfavor filamentous biology such as | 04-08-2010 |
20100101995 | ADVANCED WASTEWATER TREATMENT PROCESS USING UP & DOWN AEROBIC/ANAEROBIC REACTORS OF CHANNEL TYPE - The present invention relates to the process for advanced wastewater treatment using up & down aerobic•anaerobic reactors of channel type in the single reaction tank in which it has the effluent recycle of channel type aeration reactor (internal cycle). For this, the anaerobic reactor of channel type is under the aerobic reactor of channel type in the single reaction tank. And the flow of the wastewater in the single reaction tank is based on the water level difference between inlet and outlet, and the air lift effect of the air diffusers. The partitions of channel type anaerobic reactor and the partitions of channel type aerobic reactor are cross. Consequently, the energy cost is cut down because the wastewater flow does not need much pumping energy. And the site need is reduced because of up & down aerobic•anaerobic reactors of channel type in the single reaction tank. | 04-29-2010 |
20100133177 | Biological Phosphorus Removal - A process for treating waste water to remove phosphorous and nitrogen in a treatment system including an anaerobic zone ( | 06-03-2010 |
20100140167 | WATER RECLAMATION WITHOUT BIOSLUDGE PRODUCTION - An apparatus for cleaning of wastewater comprising a submerged membrane biological reactor system (MBR) and a submerged membrane module (MBD) wherein the MBR is in fluid communication with the MBD for feeding excess sludge from the MBR to the MBD and wherein the MBR comprises an outlet which releases permeate passed through the membrane of the MBR and the MBD is in fluid communication with the MBR for feeding permeate passed throug the membrane of the MBD back into the MBR and comprises an outlet for releasing gas. | 06-10-2010 |
20100163482 | SYSTEM AND METHOD FOR TREATING AMMONIA-BASED WASTEWATER - A system for treating ammonia-based wastewater is provided. The system includes a first reactor, including: denitrification bacteria for denitrification; a second reactor disposed on the back of the first reactor, wherein the second reactor includes an aerator and aerobic heterotrophic bacteria, and has an HRT of less than 6 hours; a third reactor disposed on the back of the first reactor, wherein the third reactor contains nitrification bacteria carried on the carriers for improving nitrification; and a solid-liquid-separating reactor disposed on the back of the third for separating the solids and liquids in the effluent of the third reactor. | 07-01-2010 |
20100200496 | METHOD AND INSTALLATION FOR BIOLOGICALLY TREATING WASTE WATER - The invention relates to a method for biologically treating waste water, using a set of micro-organisms having different metabolic spectra, in order to eliminate carbon and nitrogen, even phosphorus. Some of the micro-organisms are fixed to mobile solid carriers ( | 08-12-2010 |
20100200497 | Method for Treating Percolate Water Produced During Dry Fermentation - Method for treating percolate water produced during, dry fermentation employs the following steps: charging a plurality of first fermentation chambers (F | 08-12-2010 |
20100200498 | Process for Maximizing PHA Production in Glycogen Accumulating Organisms - A process is provided for increasing the production of PHA in a mixed culture biomass. In a first stage of the process, organic material associated with a substrate is converted to volatile fatty acids. In the case of a wastewater treatment process, if the wastewater includes sufficient volatile fatty acids (VFAs) to support the process, then it is unnecessary to convert organic material to VFAs. In a second stage of the process, an anaerobic-aerobic selection process is utilized to select glycogen accumulating organisms that cause these organisms to proliferate and dominate the open mixed culture biomass. By providing relatively high organic loading in the form of VFAs in the anaerobic treatment phase of the selection process, glycogen accumulating organisms having a relatively high level of stored glycogen are produced. In a third stage, the PHA accumulation process is practiced where the glycogen rich organisms are fed VFAs under anaerobic or aerobic conditions or combinations thereof. Through the consumption of externally supplied VFAs and internally stored glycogen, relatively high levels of PHA in the biomass are produced. Thereafter PHA is separated from the residual biomass. | 08-12-2010 |
20100213122 | Waste Water Treatment - The present invention relates to wastewater treatment in general and to methods of controlling odors and degrading compounds contained in wastewater in particular. | 08-26-2010 |
20100219125 | METHOD FOR TREATING NITROGEN IN WASTE STREAMS - The present invention is directed to a novel process and method for treating nitrogen that is contained in an organic waste stream using aeration at a preferred predetermined mass loading in an aerobic volume followed by treatment in an anoxic/anaerobic volume. The present invention also includes the solid humus material produced from the treatment of an organic waste stream aeration at a predetermined loading in an aerobic volume followed by treatment in an anoxic/anaerobic volume and the removal of said humus solids. | 09-02-2010 |
20100230348 | WASTEWATER TREATMENT METHOD AND WASTEWATER TREATMENT APPARATUS - An aspect of the present invention provides a wastewater treatment method for treating wastewater containing ammonium nitrogen, including the steps of: oxidizing the ammonium nitrogen in the wastewater to nitrite with nitrifying bacteria in a treatment tank in which the nitrifying bacteria and anaerobic ammonium-oxidizing bacteria having a half-saturation constant of 6.1 mgN/L or more with respect to nitrite coexist; and denitrifying the nitrite formed through the oxidation of the ammonium nitrogen, with the anaerobic ammonium-oxidizing bacteria in the treatment tank, while using the ammonium nitrogen contained in the wastewater as a hydrogen donor. The method employs the anaerobic ammonium-oxidizing bacteria that can maintain the denitrification activity even under a condition in which the amount of dissolved oxygen is large, consequently can easily maintain the activities of both of the nitrifying bacteria and the anaerobic ammonium-oxidizing bacteria which coexist in the same treatment tank, and can rapidly perform wastewater treatment. | 09-16-2010 |
20100243560 | Biological Filter for Treating Waste Effluent - The invention concerns a filter whereof the reactor comprises: in its bottom part, an inlet for the effluents to be filtered and an outlet of oxygenated gas; in its upper part, an outlet for the filtered effluents; filtering means including media layers and an attached biomass, of density lower than that of the effluents to be filtered and interposed between the inlet and the outlet. The reactor is subdivided by means of racks retaining the filtering means into at least two filtering stages and into an upper outlet stage, wherein emerges the outlet for the filtered effluents. Each filtering stage is provided with a layer and its own filtering means and comprises, in its bottom part, a withdrawing outlet for excess biomass. | 09-30-2010 |
20100243561 | LOCAL SEWAGE PROCESSING UNIT, SEWAGE TREATMENT SYSTEM, METHOD OF LOCALLY PROCESSING SEWAGE AND SEWAGE TREATMENT PROCESS - A local sewage processing unit is provided that receives sewage from a local source of sewage, extracts water from the received sewage that is suitable for re-use and includes a pump that is configured to pump sewage from a receiving section of the local sewage processing unit into a pressure sewer network, as required. | 09-30-2010 |
20100243562 | WASTEWATER TREATMENT METHOD - A wastewater treatment method for treating wastewater containing ammonium nitrogen, includes the steps of: charging an unacclimated denitrification carrier containing anaerobic ammonium-oxidizing bacteria into a treatment tank; charging an unacclimated nitrification carrier containing nitrifying bacteria into the treatment tank; acclimating the unacclimated denitrification carrier in the treatment tank under an anaerobic condition; acclimating the unacclimated nitrification carrier in the treatment tank under an aerobic condition, after having acclimated the denitrification carrier; nitriting the ammonium nitrogen in the wastewater to generate nitrite with the acclimated nitrification carrier; and denitrifying the nitrite generated by nitriting the ammonium nitrogen with the acclimated denitrification carrier, while using the ammonium nitrogen in the wastewater as a hydrogen donor. | 09-30-2010 |
20100258500 | APPARATUS AND METHOD FOR TREATING RADIOACTIVE NITRATE WASTE LIQUID - To provide an apparatus for treating a radioactive nitrate waste liquid that includes a denitrification tank ( | 10-14-2010 |
20100264080 | Membrane bioreactor with reduced air scour requirements - In a sewage treatment plant with a membrane bioreactor (MBR), raw untreated or partially treated wastewater (influent) and/or mixed liquor in the intensified process is superoxygenated. In a preferred form of the process the influent is superoxygenated such that membrane air scouring requirements are reduced. Influent may be fed to a swing zone where denitrification and nitrification occur simultaneously through process control. In one embodiment superoxygenation is conducted in an internal recycle stream of the mixed liquor, with oxygen content supersaturated preferably to over 300 parts per million. Due to the active evolution of oxygen gas from the supersaturated stream, occurring preferably by seeding the supersaturated stream with air bubbles, the supersaturated oxygen can serve the dual purposes of meeting process oxygen demands and providing part of air scouring requirements for the membranes. | 10-21-2010 |
20100264081 | SIDE STREAM TYPE MEMBRANE BIOREACTOR PROCESS - The invention provides a side stream type membrane bioreactor process which does not cause an excessive fall in the MLSS concentration in a bioreactor, does not require any additional effluent treatment facility for discharging backwash effluent, and can further ensure the stability of the membrane filtration performance of a separation membrane. According to the invention, in a side stream type membrane bioreactor process, a backwash effluent containing foulants that are generated by backwashing a separation membrane is collected in a backwash effluent tank, and subjected to ozone treatment, and the resultant is returned to a bioreactor. By this ozone treatment, the foulants close to the membrane pore size of the separation membrane are made fine or are made into a state be easily taken into activated sludge flocs. Therefore, even when the treated effluent is returned to the bioreactor, the membrane filtration performance of the separation membrane is not deteriorated. | 10-21-2010 |
20100288696 | METHOD FOR TREATMENT OF SLUDGE - A method for treatment of sludge with a facultative-organism-adapted membrane bioreactor by providing a sludge treatment system comprising a facultative digestion tank, a membrane module, an aeration system, a sludge pump, and a drainage pump, pumping sludge into the facultative digestion tank via the sludge pump and allowing for digestion, synchronously aerating and scouring the membrane module by the aeration system, pumping the sludge by the drainage pump and filtrating by the membrane module so that sludge and water are separated, and draining the water via the drainage pump. The method can digest sludge completely in the digestion tank, and solves problems existing in conventional sludge treatment methods such as large investment and high transportation cost, even achieves a subject of zero discharge of sludge. | 11-18-2010 |
20100314311 | METHOD FOR REMOVING THE CONTAMINATION OF C,N UTILIZING HETEROTROPHIC AMMONIA-OXIDIZING BACTERIA - This invention relates to a method that uses heterothrophic ammonia oxidation bacteria (HAOB) to remove carbon and nitrogen pollutants in wastewater. The method includes the cultivation of the heterotropic bacteria in an activated sludge environment and the removal of carbon and nitrogen from the wastewater. According to the physiological characteristics of HAOB and the principles of combined oxidation of carbon and nitrogen, the method is able to achieve simultaneous removal of carbon and nitrogen under the condition that the cells do not grow. The process is able to be carried out in the temperature range of 6-40° C. No excess sludge is produced in the process. The invention is able to control the process and product composition of anaerobic ammonia oxidation through the control of organic carbon source, and is able to realize zero-accumulation of NO | 12-16-2010 |
20100326904 | WASTEWATER TREATMENT - A system for treating wastewater, the system including: a septic tank for separating solid matter from liquid matter in raw wastewater; a bioreactor for receiving and biologically treating the liquid raw wastewater from the septic tank to lower its biochemical oxygen demand; and a de-oxygenating reactor for receiving and further treating the biologically treated wastewater from the bioreactor to reduce dissolved oxygen levels in the biologically treated wastewater; wherein the system is arranged so that at least a portion of the wastewater treated in the de-oxygenating reactor flows back into the septic tank and the bioreactor before being discharged from the system. | 12-30-2010 |
20110079554 | METHOD FOR TREATING MIXED WASTEWATER FROM PHARMACEUTICAL CHEMICAL INDUSTRY PARK - A method for treating mixed wastewater from pharmaceutical chemical industry parks including introducing mixed wastewater into a regulation tank for regulation of water flow and water quality, and then into a hydrolysis tank having a hanged filler and employing upflow water distribution, into an anaerobic tank employing upflow water distribution, into a moving bed biofilm reactor having a suspended filler and an aeration device at the bottom thereof, into a biological aerated filter including a ceramic filler, and finally treating using coagulating precipitation process. The final effluent has less than 100 mg/L COD. | 04-07-2011 |
20110084022 | Process for treating nitrogenous wastewater with simultaneous autotrophic denitrification, hetertrophic denitrification and COD removal - A process for treating nitrogenous wastewater contains an autotrophic denitrification reaction, a heterotrophic denitrification reaction and a COD removal reaction simultaneously and mixedly taking place in a single reactor. The nitrification reaction is caused by nitrifying bacteria, in which ammonium is oxidized into nitrite. The autotrophic denitrification reaction is caused by autotrophic denitrifying bacteria, in which ammonium used as electron donor and nitrite used as electron acceptor are converted into nitrogen gas and nitrate. The heterotrophic denitrification reaction is caused by heterotrophic denitrifying bacteria, in which nitrate and COD are consumed. It is not necessary to build two separate reactors for aerobic nitrification and anaerobic denitrification, thereby effectively reducing the fabrication and operation cost. | 04-14-2011 |
20110089106 | DYNAMIC ANAEROBIC AEROBIC (DANA) REACTOR - An anaerobic water purification system including an anaerobic water purification unit receiving water to be treated and providing an anaerobic-treated water output and biomass carriers for supporting anaerobic microorganisms in the anaerobic water purification unit. | 04-21-2011 |
20110100904 | METHOD AND UNIT FOR THE PURIFICATION OF WASTEWATER WITH AEROBIC GRANULAR SLUDGE - The invention relates to a biological wastewater purification method using a reactor including a first compartment ( | 05-05-2011 |
20110127214 | ENERGY OPTIMIZATION IN AN ANAEROBIC, FACULTATIVE, ANOXIC AEROBIC PLANT, USING FINE BUBBLES, WITHOUT SLUDGE PRODUCTION - System for treating waste water with intermittent aeration and low energy consumption, which comprises: a pump sump or a sump controlled by a PLC in order to achieve control of pumping, level and flow of liquid; the liquid is pumped to the aerobic treatment device or to the UASB device, which aerobic treatment comprises an air diffusion unit or fine-bubble diffusers ( | 06-02-2011 |
20110132836 | SYSTEMS AND METHODS FOR NUTRIENT REMOVAL IN BIOLOGICAL TREATMENT SYSTEMS - The present invention relates to systems and processes of wastewater treatment and, in particular, to systems and methods of treating wastewater utilizing biological treatments utilizing two mixed liquor recycle streams for nutrient removal. | 06-09-2011 |
20110132837 | Method and System for Treating Wastewater - Methods and systems for utilizing biological wastewater treatment processes to remove nutrients from wastewater containing reduced sulfide compounds may include treating the wastewater in an anaerobic zone, an anoxic zone, and an aerobic zone. The wastewater is first treated in the anaerobic zone to uptake residual biodegradable organic material using specialized bacteria known as phosphorus accumulating organisms (“PAOs”) and glycogen accumulating organisms (“GAOs”). After treatment in the anaerobic zone, the wastewater is treated in an anoxic zone to convert nitrates to nitrogen gas and sulfur to sulfates. Following treatment in the anoxic zone, the wastewater is treated in the aerobic zone to oxidize ammonia to nitrate and to complete removal of phosphorus. After treatment in the aerobic zone, the wastewater may be treated in other zones, or may be delivered to a liquid-solids treatment stage. | 06-09-2011 |
20110180473 | INTEGRATED BIOLOGICAL WASTEWATER TREATMENT AND CLARIFICATION - Apparatus for integrated biological wastewater treatment and clarification including a tank having a wastewater inlet for receiving wastewater to be treated and having a treated, clarified wastewater outlet for providing treated, clarified wastewater for use, the tank having an upper turbulence region, a lower solids settling region below the upper turbulence region and a sludge collection region below the lower solids settling region, a multiplicity of biomass carriers disposed in the upper turbulence region, a gas diffuser assembly arranged generally between the upper turbulence region and the lower solids settling region for providing gas bubbles which move upwardly through the wastewater and the biomass carriers in the upper turbulence region, providing turbulence and oxygen and a sludge removal conduit communicating with the sludge collection region for removal of sludge therefrom. | 07-28-2011 |
20110259821 | Methods and Systems for Treating Wastewater - A method and system of treating wastewater is disclosed. The treatment system has a nitrification-denitrification system comprising a sorption system, a biofilm system, and an anaerobic digester that digests or converts at least a portion of the solids or sludge from the sorption system and biofilm system. | 10-27-2011 |
20110290721 | Biological Processing for Beneficial Use - This method improves and controls ex-situ or in-situ, aerobic or anaerobic digestion of organic materials and toxic or damaging compounds through increased control of multiple chemical and biological settings and conditions. The ability to control flow, natural processes, and biological activity while adjusting to individual site conditions modify results. Large quantities of modified or adjusted organisms are developed and utilized. Identification and strategic manipulation of the multiple elements of the system result in performance modifications. Energy is utilized to manipulate characteristics of a natural degradation system. | 12-01-2011 |
20110315627 | METHOD OF BIOLOGICAL WASTE-WATER TREATMENT - A biological waste-water treatment using a biological reactor is described where the processes are conducted in an alternating and joint, aerobic zone, anoxic zone and aerobic zone arrangement. Raw waste-water is transferred to the aerobic zone and/or to the anoxic zone. The waste-water is also transferred from the last anoxic zone to the last aerobic zone, which acts as an exit from the biological reactor. In the process of external recirculation to the aerobic zone, sludge from the bottom of the secondary precipitation tank is moved to the aerobic zone. In the process of internal recirculation the content of the last aerobic zone is divided between anoxic zone and aerobic zone. From the last aerobic zone, waste-water is transferred with the sludge to the secondary precipitation tank, where the clean waste-water is separated from the sludge on the bottom of the secondary precipitation tank. | 12-29-2011 |
20120000849 | Wastewater Treatment - A wastewater treatment system includes wastewater having nitrogen-containing compounds, an anoxic zone having denitrifying bacteria, and an aerobic zone having nitrifying bacteria. The anoxic zone is coupled to the aerobic zone, and wastewater flows from the anoxic zone to the aerobic zone or vice versa. The wastewater treatment system is configured to accept heat from a heat engine to heat the wastewater. Treating wastewater can include flowing wastewater having nitrogen-containing compounds into a biological reactor having an anoxic zone and an aerobic zone, and heating the wastewater with heat from a heat engine to facilitate denitrification reactions in the anoxic zone and to facilitate nitrification reactions in the aerobic zone. In some cases, the wastewater is heated with a three phase fluidized bed heat exchanger having porous particulates in contact with heat exchange tubes, with bacteria coupled to an interior of the porous particulates. | 01-05-2012 |
20120006744 | METHOD AND DEVICE FOR THE TREATMENT OF WASTE WATER - The invention relates to a reactor for treatment of waste water for being subject to both anoxic/anaerobic and aerobic treatment within one single reactor volume. The anoxic/anaerobic reaction zone is separated from the aerobic reaction zone by a separator which also works as a hydrodynamic separator between the two reaction zones. The reactor makes it possible that the effluent water has a lower proportion of suspended solids and also that it produces less sludge than reactors of comparison. The reactor is further more energy efficient than prior art reactors. Several reactors according to the invention may be arranged in parallel so as for the inlet waste water may be treated in a modular way, and thus allowing the maintenance of the units to be facilitated. | 01-12-2012 |
20120006745 | Methods and Systems for Producing Granules of Biomass in the Treatment of Wastewater - Methods and systems for the production of granules of biomass in the treatment of wastewater. Organic matter is removed from wastewater in an anaerobic zone and then in an aerobic zone. Waste activated sludge is transferred from the aerobic zone to the anaerobic zone and is used in the formation of granulated biomass in the anaerobic zone. Excess granulated biomass may be removed from the anaerobic zone. | 01-12-2012 |
20120012525 | REFUSE LANDFILL LEACHATE WASTEWATER TREATMENT SYSTEM AND TECHNOLOGY - This invention relates to a refuse landfill leachate wastewater treatment system comprising a collection well, an adjustment tank, a filter, a comprehensive treatment system having a multi-stage anoxic/aerobic pool and a membrane biological reactor. The process of treatment is: waste water enters a adjustment tanke in which water quality and quantity are adjusted; subsequently, enters a filter, the water discharged from the filter and enters a comprehensive treatment system having a multi-stage anoxic/aerobic pool and a membrane biological reactor, wherein waster water is bio-chemically treated to remove the organic substances, nitrogen and ammonia, and then the wastewater is discharged into a catalyzed oxidation tower; the organic substance in waste water is oxidized on effect of ozone and under the existing catalyst function and then the biochemical capacity thereof is enhanced; and then the catalyzed and oxidized waste water enters carbon filter pool, the remaining contaminated matter can be further removed by degradation of the anoxic oxidation of the biological membrane on the packing material in pool, then the output water meets the requirement of National Standard or other relevant industrial standards. | 01-19-2012 |
20120018374 | Sewage Treatment Process and System - A sewage treatment process is provided, which includes the following steps: a) sewage feeding step, comprising introducing raw sewage into a biological reaction tank ( | 01-26-2012 |
20120031836 | COMPACT UPRIGHT BIOREACTOR FOR THE ELIMINATION OF NUTRIENTS - In accordance with particular process, method and system aspects there is provided a biological manner of treating water/wastewater. Treatment is undertaken in bioreactor configured to treat the water/wastewater through a first process of denitrification followed by a second process of biological phosphorus removal. The bioreactor may be defined by multiple stages arranged in compact vertical alignment, for example, to reduce a footprint of the bioreactor and to feed the water/wastewater between the stages using gravity. The stages may comprise, in order, a Deaeration stage, an Anoxic stage, an Anaerobic stage, and an Aerobic stage. Continuous vacuum operation in the Deaeration stage enhances the physical removal of oxygen and other dissolved gases. | 02-09-2012 |
20120043277 | CONTACT-STABILIZATION/PRIME-FLOAT HYBRID - Systems and methods for treating wastewater including a dissolved air flotation operation performed upon a portion of a mixed liquor output from a contact tank prior to the mixed liquor entering a biological treatment tank. | 02-23-2012 |
20120067816 | SIMULTANEOUS ANOXIC BIOLOGICAL PHOSPHORUS AND NITROGEN REMOVAL - Methods and systems are provided for treating wastewater to simultaneously remove nitrogen, carbon, and phosphorus. The process includes an anoxic tank that receives at least two streams, including plant influent wastewater and return activated sludge. These streams are mixed in the anoxic tank to promote phosphorus release and fermentation of particulate and dissolved organic matter. The mixed liquor is transferred to an aerated tank having low dissolved oxygen concentrations to promote development of phosphorus-release bacteria that is eventually recycled to the anoxic tank by way of the return activated sludge. Simultaneous nitrification, denitrification, and phosphorus release occur in the aerated tank. A membrane tank separates treated effluent from activated sludge in a membrane tank. | 03-22-2012 |
20120067817 | SIMULTANEOUS ANOXIC BIOLOGICAL PHOSPHORUS AND NITROGEN REMOVAL WITH ENERGY RECOVERY - Methods and systems are provided for treating wastewater to simultaneously remove nitrogen, carbon, and phosphorus, while recovering energy in the form of methane and carbon dioxide. An ammonia-containing stream is directed to a pretreatment tank that produces excess sludge, biogas, and a pretreated stream. The pretreated stream has at least 45% less carbon than the ammonia-containing stream. The pretreated stream is then directed to an anoxic tank, which promotes phosphorus release and fermentation of particulate and dissolved organic matter. The mixed liquor is transferred to an aerated tank having low dissolved oxygen concentrations to promote development of phosphorus-release bacteria that is eventually recycled to the anoxic tank by way of the return activated sludge. Simultaneous nitrification, denitrification, and phosphorus release occur in the aerated tank. A membrane tank separates treated effluent from activated sludge in a membrane tank. | 03-22-2012 |
20120085701 | PROCESS AND PLANT FOR TREATING A WATER STREAM - A process for treating a water stream containing dissolved organic carbon and dissolved salts comprises subjecting the water stream to reverse osmosis after a pre-treatment step to reduce the amount of dissolved organic carbon directed in water to the reverse osmosis treatment step. The preferred pre-treatment step is a membrane treatment step such as nanofiltration. The process enables treatment of complex effluents including mixtures of domestic and industrial effluents. Treated water may be recycled and a treatment plant ( | 04-12-2012 |
20120145629 | System And Method For Treating Process Water With Separate Separation Of Gases And Solids - The invention relates to a method and a system for purifying process water, particularly for continuously purifying process water in the paper industry. The method comprises at least one process water treatment step, which comprises the following steps: a) an anaerobic purifying step, wherein process water to be purified is brought in contact with anaerobic microorganisms in an anaerobic reactor in order to decompose impurities present in the waste water, b) a first separating step, wherein gases present in the process water obtained in step a) are separated from said process water, and c) a second separating step, wherein solids present in the process water obtained in step b) are separated from the process water. | 06-14-2012 |
20120152830 | WASTE WATER TREATMENT METHOD - Systems and methods have been developed for reclaiming water contaminated with the expected range of contaminants typically associated with produced water, including water contaminated with slick water, methanol and boron. The system includes anaerobically digesting the contaminated water, followed by aerating the water to enhance biological digestion. After aeration, the water is separated using a flotation operation that effectively removes the spent friction reducing agents and allows the treated water to be reclaimed and reused as fracturing water, even though it retains levels of contaminants, including boron and methanol, that would prevent its discharge to the environment under existing standards. The treated water may further be treated by removing the methanol via biological digestion in a bioreactor, separating a majority of the contaminants from the water by reverse osmosis and removing the boron that passes through the reverse osmosis system with a boron-removing ion exchange resin. | 06-21-2012 |
20120187042 | Method of biological phosphorus removal with maximum nitrogen removal in wastewater - A method for removing phosphorus and nitrogen from an activated sludge wastewater treatment system is provided consisting of one or more anaerobic zones followed by two or more activated sludge reactors operating in parallel each having independent aeration/mixing means, whereby the utilization of the influent organic carbon under anoxic conditions; and thereby, the selection of denitrifying phosphate accumulating organisms (DNPAOs) over non-denitrifying phosphate accumulating organisms (PAOs), is maximized in order to further maximize the removal of phosphorus and nitrogen in the wastewater treatment system. | 07-26-2012 |
20120234751 | WASTEWATER PRETREATMENT METHOD AND SEWAGE TREATMENT METHOD USING THE PRETREAMENT METHOD - A pretreatment method is provided, which comprises the following steps: (1) wastewater feed is introduced into a first end of a first aeration basin, and is mixed with a first concentrated mixed liquor to obtain a first mixed liquor; (2) the first mixed liquor is aerated in the aeration stage of the first aeration basin to obtain a second mixed liquor at a second end of the first aeration basin; (3) the second mixed liquor is introduced into a first sedimentation basin to obtain a supernatant and the first concentrated mixed liquor; (4) the supernatant is discharged and at least a part of the first concentrated mixed liquor is returned to the first end of the first aeration basin. At the same time, a sewage treatment method using the wastewater pretreatment method is provided. The pretreatment method can be used steadily for a long time without discharging sludge. | 09-20-2012 |
20120241375 | WASTEWATER TREATMENT - A wastewater treatment system includes wastewater having nitrogen-containing compounds, an anoxic zone having denitrifying bacteria, and an aerobic zone having nitrifying bacteria. The anoxic zone is coupled to the aerobic zone, and wastewater flows from the anoxic to the aerobic zone or vice versa. A fluidized bed heat exchanger configured to accept heat from a heat engine and to transfer the heat from the heat engine to the wastewater is positioned in the aerobic zone or the anoxic zone. The fluidized bed heat exchanger includes particulate media, and fluidization of the particulate media scrubs bacterial growth from portions of the fluidized bed heat exchanger. Treating wastewater can include flowing wastewater having nitrogen-containing compounds into a biological reactor having an anoxic zone and an aerobic zone, and heating the wastewater with heat from a heat engine to facilitate denitrification reactions in the anoxic zone and nitrification reactions in the aerobic zone. | 09-27-2012 |
20120273412 | TREATMENT OF WASTE PRODUCT - Technologies are generally described for a treatment system and a method for treating waste product. In some examples, the treatment system may include a container effective to receive a waste product. The treatment system may further include one or more filters in communication with the container. The filter or filters may include a polymer carrier material. The polymer carrier material may include at least one of Sphingomonas bacteria, Flavobacteriales bacteria or Chryseobacterium bacteria. | 11-01-2012 |
20120305476 | TREATMENT METHOD FOR REDUCING THE PRODUCTION OF AN H2S COMPOUND IN AQUEOUS EFFLUENTS PASSING INTO A PIPE - A treatment method for reducing or preventing the production of sulfide compounds of hydrogen such as H | 12-06-2012 |
20120305477 | SOLIDS RETENTION TIME UNCOUPLING BY SELECTIVE WASTING OF SLUDGE - Fluorescence in situ hybridizations were used to identify and determine the abundance of nitrifying bacteria and Anammox bacteria (recycling bacteria) in freshly settled sludge of biological nutrient removal (BNR) secondary clarifiers. An uneven distribution was observed for recycling bacteria in two BNR systems. Settling patterns suggest microcolony formation processes are sensitive to the internal recycle rate, which allow for rapid recycling bacteria microcolony growth by increasing circulation of flocs through the aeration and anoxic basins. Sludge containing high levels of recycling bacteria are selectively collected and separated from the remaining sludge, uncoupling the solids retention time (SRT) of the recycling bacteria from the wasting bacteria. Elevated recycling bacteria SRTs increase concentrations of nitrifying bacteria in the aeration basin and Anammox bacteria in the anoxic basin, improving nitrification and anaerobic ammonium oxidation. Uncoupling the SRT enhances aeration and/or anoxic basin utilization and reduces the overall hydraulic residence time. | 12-06-2012 |
20130001159 | METHOD FOR WET WEATHER WASTEWATER TREATMENT - Method for treating wastewater, in particular municipal wastewater, in which the wastewater is initially received in an equalization basin reactor for performing an infiltration and inflow equalization process. The equalization basin reactor has sufficient capacity for the increased inflow of wastewater received under wet weather conditions. However, the increased inflow is not merely stored in the equalization basin reactor for later processing, but the wastewater treatment process continues throughout the wet weather period with the first stage wastewater treatment being performed in the equalization basin reactor, which further provides a substantially constant outflow of partially treated wastewater for subsequent treatment stages. | 01-03-2013 |
20130015124 | APPARATUS AND METHOD FOR ALTERNATIVE AERATION-EFFLUENT WASTEWATER TREATMENT USING CERAMIC MEMBRANEAANM CHOI; Yong SuAACI SeoulAACO KRAAGP CHOI; Yong Su Seoul KRAANM Hong; Seok WonAACI SeoulAACO KRAAGP Hong; Seok Won Seoul KRAANM Chung; Jae ShikAACI SeoulAACO KRAAGP Chung; Jae Shik Seoul KRAANM Park; Yong BaeAACI SeoulAACO KRAAGP Park; Yong Bae Seoul KRAANM Kim; Gyo BumAACI SeoulAACO KRAAGP Kim; Gyo Bum Seoul KRAANM Chung; Yun ChulAACI SeoulAACO KRAAGP Chung; Yun Chul Seoul KR - Disclosed are apparatus and method for alternative aeration-effluent wastewater treatment using a ceramic membrane, which allows the biological treatment to be performed sufficiently in an intermittent aeration tank by combining an anaerobic tank with a plurality of intermittent aeration tanks and selectively changing an inflow path of influent water according to an operation status of the intermittent aeration tanks. The present disclosure is directed to providing an apparatus and method for alternative aeration-effluent wastewater treatment, which allows the aeration and treated water to continuously discharge through two intermittent aeration tanks by independently forming an air injection line and a treated water discharge line at a ceramic membrane provided in each intermittent aeration tank. | 01-17-2013 |
20130056411 | WASTEWATER TREATMENT METHOD USING ANNULARLY ARRANGED MICROORGANISM CARRIERS - A wastewater treatment method using annularly arranged microorganism carriers in a reaction tank, which defines therein an upper reaction area, a lower reaction area and a passage area surrounded by the microorganism carriers and kept in communication between the upper reaction area and the lower reaction area. Microorganisms including nitrifying bacteria and autotrophic denitrifying bacteria are attached to the surface of each microorganisms carriers and suspending in the water of the reaction tank for causing Anammox reaction to convert NH | 03-07-2013 |
20130075327 | REACTOR SETUP - The present invention provides a process for reducing the start-up time of an aerobic granular sludge reactor, said process comprising starting said reactor with an active biomass comprising fragmented aerobic sludge granules. | 03-28-2013 |
20130112616 | FLUID TREATMENT SYSTEM - A fluid treatment system includes a fluid source, at least one anaerobic reactor vessel, and at least one aerobic reactor vessel. The anaerobic reactor vessel contains retaining a set of retaining structures that are at least partially coated with an anaerobic biofilm. The aerobic reactor vessel contains an aerobic biofilm. When fluid from the fluid source is exposed to the anaerobic biofilm, the anaerobic biofilm removes one or more metal substances from the fluid. When the fluid is exposed to the aerobic biofilm, the aerobic biofilm may cause organic materials in the fluid to metabolize. The system also may include a precipitation reactor that separates divalent metals from the fluid, a settling facility that forms a slurry comprising separated metals, and a neutralization reactor that modifies the fluid to a substantially neutral pH. | 05-09-2013 |
20130134089 | METHOD AND SYSTEM FOR TREATING WASTEWATER - A wastewater treatment process uses enhanced primary treatment to remove suspended solids from raw wastewater. Primary sludge is treated in a fermenter. Primary effluent is treated by biological nutrient removal (BNR) to produce a treated effluent and waste activated sludge (WAS). The WAS is treated in an anaerobic digester, which also treats sludge from the fermenter. Anaerobic digestate is separated to provide a liquid effluent. The liquid effluent is stripped of phosphorous and returned to the BNR as a source of readily biodegradable carbon. Liquid in the fermenter may also be separated to provide a liquid rich in volatile fatty acids (VFAs). This liquid is returned to the BNR when additional VFAs are required. | 05-30-2013 |
20130168314 | Method for Treating Wastewater Containing Copper Complex - Disclosed is a method for treating wastewater containing at least one copper complex, comprising: 1) providing the wastewater containing the at least one copper complex, wherein the at least one copper complex is chosen from EDTA-Cu | 07-04-2013 |
20130256217 | Process for Treating Water by Nitritation-Denitration Comprising at Least One Aerated Step and One Step for Controlling the Oxygen Input During the Aerated STep - A process for treating water that includes ammonium. The water is directed to a biological reactor and the quantity of nitrates formed in the reactor and the quantity of ammonium reduced in the reactor is determined. A ratio of the quantity of nitrates formed to the quantity of ammonium reduced is determined. Further, the percentage of ammonium reduced is also determined. The water in the biological reactor is aerated by injecting oxygen into the reactor where the amount of oxygen injected is a function of the ratio and the percentage of ammonium reduced in the reactor. | 10-03-2013 |
20130256218 | Printing and dyeing wastewater treatment and reuse apparatus and method therefor - A printing and dyeing wastewater treatment and reuse apparatus includes a coarse filter, a regulation pool, a hydraulic sieve, a desulfurization pool, a nanocatalytic electrolyzer, a flocculation pool, a flocculation tank, a settling pool, a flotation device, a biochemical pool, a secondary settling pool, a secondary nanocatalytic electrolyzer, a fine filter, a compressor, a nanomembrane assembly, and a recycling pool. Also provided is a printing and dyeing wastewater treatment and reuse method including steps of desulfurization, nanocatalytic electrolysis, flocculation, biochemical treatment, secondary catalytic electrolysis, filtration, and separation by membrane. The invention allows high COD | 10-03-2013 |
20130264280 | Process for Removing Ammonium from a Wastewater Stream - A process that utilizes ammonium oxidizing bacteria (AOB) and anaerobic ammonium oxidizing (ANAMMOX) bacteria to remove ammonium from a wastewater stream. Sludge separated from the wastewater in a mainstream is processed in a sidestream that includes an anaerobic digester, a dewatering system, and a biofilm reactor. The anaerobic digester produces digested sludge that is dewatered, producing reject water that includes a relatively high ammonium concentration and a relatively low organic carbon concentration and a relatively high temperature. The reject water is treated in a sidestream deammonification biofilm reactor that includes biofilm carriers seeded with AOB and ANAMMOX bacteria that are effective to remove ammonium from the reject water. In order to remove ammonium from the wastewater in the mainstream, the AOB and ANAMMOX bacteria on the media carriers is utilized to contact the wastewater in the mainstream and to remove ammonium therefrom. Because of the conditions in the mainstream, after a period of time, the AOB and ANAMMOX bacteria does not efficiently remove ammonium. To rejuvenate the AOB and ANAMMOX bacteria on the biofilm carriers, the AOB and ANAMMOX bacteria is again contacted with the reject water in the sidestream biofilm reactor where conditions are favorable for the growth and proliferation of the AOB and ANAMMOX bacteria. | 10-10-2013 |
20130264281 | APPARATUS AND METHODS FOR CONTROL OF WASTE TREATMENT PROCESSES - Waste-treatment processes are enhanced through generation and introduction of specific biological populations customized to perform or favor specific tasks either during the main process, for the formation or precipitation of certain biological nutrients, or to accomplish solids formation reduction in a post-treatment process. These bacteria may be grown from specialized mixes of activated sludge and waste influent by exposing these materials to controlled environments (e.g., in an off-line treatment area). They may then be returned to the main process to perform certain tasks such as converting particulate cBOD into soluble cBOD for utilization, to reduce high solids yield organisms by supplementing the population characteristics with low yield organism characteristics, to provide biological nutrients or oxygenation assistance, to improve nitrification/denitrification efficiency, or to disfavor filamentous biology such as | 10-10-2013 |
20130264282 | PROCESS, APPARATUS AND MEMBRANE BIOREACTOR FOR WASTEWATER TREATMENT - Wastewater influent is supplied to an aeration zone having a membrane module. Activated sludge is established in the aeration zone and an oxygen surplus is maintained by controlling a rate of oxygen supplied to the aeration zone. Wastewater influent is mixed with the activated sludge to form a first mixed liquid. A portion of the first mixed liquid is filtered to form a filtrate and unfiltered activated sludge. The unfiltered activated sludge is mixed with the activated sludge in the aeration zone to form the first mixed liquid. A portion of the first mixed liquid is transferred from the aeration zone to an anaerobic zone, and a second portion of first mixed liquid is mixed with activated sludge in the anaerobic zone to form a second mixed liquid. The second mixed liquid is recycled to the aerobic zone. | 10-10-2013 |
20130319936 | METHOD FOR THE BIOLOGICAL TREATMENT OF WASTEWATER USING AN AEROBIC GRANULAR BIOMASS - A method for the biological treatment of wastewater containing pollutants, using an aerobic biomass, includes a plurality of successive cycles of a predefined duration in order to achieve pollutants removal efficiency of 90% or higher, each of the cycles including the following steps:
| 12-05-2013 |
20130327709 | METHOD AND SYSTEM FOR TREATING WASTEWATER AND SLUDGES BY OPTIMIZING sCO2 FOR ANAEROBIC AUTOTROPHIC MICROBES - The present invention describes a method of optimizing CO | 12-12-2013 |
20130341267 | TREATMENT FOR MOLASSES SPENT WASH AND OTHER WASTEWATERS - Disclosed is a process and apparatus that uses multiple stages or unit processes to treat wastewater, such as distillery spent wash which may be molasses spent wash (MSW). The stages include one or more of anaerobic digestion, chemical treatment, electrocoagulation, aerobic treatment, physical separation, and RO or adsorbent based treatment. A chemical treatment for the effluent from an anaerobic digester treating MSW is described. In an electrocoagulation step, a stable cathode is used to also provide electroflotation and hardness precipitation. Aerobic biological treatment and physical separation may be provided by a membrane bioreactor. | 12-26-2013 |
20130341268 | METHOD AND SYSTEM FOR TREATING WASTEWATER - Treating distilled water with bacteria and other micro-organisms to remove nitrogen compounds from the distilled water. The distilled water may be produced from pretreating and distilling wastewater, such as wastewater from oil and natural gas production. The treatment steps of the distilled water include subjecting the water to microbial action under both anoxic and aerobic conditions and employing a membrane bioreactor to further purify the water. The purified water is still further purified by either reverse osmosis or ion exchange systems. | 12-26-2013 |
20140021130 | HYBRID AEROBIC AND ANAEROBIC WASTEWATER AND SLUDGE TREATMENT SYSTEMS AND METHODS - A hybrid method and system of treating wastewater with reduced energy usage is disclosed. The treatment system has a sorption system, an anaerobic digester that digests or converts at least a portion of the solids or sludge from the sorption system, and an aerobic treatment tank that partially reduces oxygen demand of a portion of the sludge from the sorption tank. | 01-23-2014 |
20140027373 | PARTIALLY DIVIDED ANAEROBIC TREATMENT SYSTEM - In a waste treatment system and process, relatively low and high solids concentration streams are treated in generally parallel anaerobic reactors. The reactors may share a common wall or gas collecting cover. The reactors may also share a common downstream aerobic treatment unit. Solids produced during downstream treatment of effluent from one or both anaerobic reactors may be returned to the high solids concentration stream. The low solids concentration stream may be treated in an attached growth anaerobic digester. | 01-30-2014 |
20140027374 | HYBRID AEROBIC AND ANAEROBIC WASTEWATER AND SLUDGE TREATMENT SYSTEMS AND METHODS - A hybrid method and system of treating wastewater with reduced energy usage is disclosed. The treatment system has a sorption system, an anaerobic digester that digests or converts at least a portion of the solids or sludge from the sorption system, and an aerobic treatment tank that partially reduces oxygen demand of a portion of the sludge from the sorption tank. | 01-30-2014 |
20140042086 | METHOD FOR IMPROVING A WASTEWATER PURIFICATION PROCESS - The present invention relates to a method for improving a wastewater purification process for a wastewater stream containing organic materials, raw sludge, a plurality of mercaptans, grit and grease wherein the raw sludge is thickened in the wastewater stream by injecting polymers. The method includes a step of injecting an additive agent prior to thickening the raw sludge to reduce odor produced by the organic materials and the mercaptans. | 02-13-2014 |
20140048480 | METHOD AND APPARATUS FOR FOR BIOLOGICALLY TREATING COKING-PLANT WASTEWATER - The invention relates to a process for the biological purification of coking plant wastewater that is loaded with nitrogen compounds, cyanides, phenols and sulphides. The coking plant wastewater, for removal of pollutants that inhibit a nitrification, is fed together with a biomass-containing stream of matter to a detoxification reactor that has a gas-treatment zone and a reaction zone. The feed mixture supplied to the detoxification reactor is exposed in the gas-treatment zone to a gaseous oxidizing agent. A stream of matter enriched with the oxidizing agent is fed to the reaction zone in which cyanides and other pollutants inhibiting the nitrification are biodegraded. A stream of matter is withdrawn from the reaction zone and returned to the detoxification reactor. In addition, a wastewater stream from the detoxification reactor is separated by a membrane filtration into a biomass-containing retentate stream and a purified permeate stream. From the retentate stream, a substream which entrains excess sludge is discharged. The retentate stream, after separating off the substream, is recirculated to the detoxification reactor. The permeate stream is further purified by nitrification and subsequent denitrification. | 02-20-2014 |
20140061125 | WASTEWATER PROCESSING METHOD OF HYDROLYSIS-ACIDIFICATION ENHANCED BY ADDITION OF ZERO-VALENT IRON (ZVI) - The invention discloses a wastewater processing method of hydrolysis-acidification enhanced by addition of zero-valent iron (ZVI), including the following steps: 3˜6 ZVI-filling layers are settled in the middle of an anaerobic hydrolysis-acidification reactor. Excess sludge taken from sewage treatment plant using as seed sludge is added into this anaerobic hydrolysis-acidification reactor for startup and domestication. In the present invention, ZVI are added into this anaerobic hydrolysis-acidification reactor to accelerate organic matters degradation and produce more acetic acids, accompanied with higher COD removal obtained. ZVI can be protected from rust in this anaerobic biological environment due to the air isolation. Also, ZVI can enhance anaerobic hydrolysis of wastewater through reducing refractory pollutants involved in wastewaters. This novel method made the effluent from the hydrolysis-acidification reactor present less COD concentration and simpler substrate form, benefiting for the following anaerobic methanogenesis or aerobic treatment. | 03-06-2014 |
20140069863 | METHOD AND APPARATUS FOR NITROGEN REMOVAL IN WASTEWATER TREATMENT - A reactor and control method thereof for nitrogen removal in wastewater treatment achieves a measured control of maintaining high ammonia oxidizing bacteria (AOB) oxidation rates while achieving nitrite oxidizing bacteria (NOB) repression, using various control strategies, including: 1) ammonia and the use of ammonia setpoints, 2) operational DO and the proper use of DO setpoints, 3) bioaugmentation of a lighter flocculant AOB fraction, and 4) proper implementation of transient anoxia within a wide range of reactor configurations and operating conditions. | 03-13-2014 |
20140069864 | METHOD AND APPARATUS FOR NITROGEN REMOVAL IN WASTEWATER TREATMENT - One or more reactor and one or more control methods are used for nitrogen removal in wastewater treatment to achieve measured control of maintaining high ammonia oxidizing bacteria (AOB) oxidation rates while achieving nitrite oxidizing bacteria (NOB) out-selection, using various control strategies, including: 1) ammonia and the use of ammonia setpoints; 2) operational DO and the use of DO setpoints; 3) bioaugmentation of anammox and lighter flocculant AOB fraction; and 4) implementation of transient anoxia in several reactor configurations and conditions for removal of oxidized nitrogen using anammox or heterotrophic organisms. Controls described maximize nitrogen removal with minimal aeration, through control of transient anoxia and aerobic SRT, out-selection of NOB, and control of DO concentrations or aeration interval by keeping the reactor ammonia (NH | 03-13-2014 |
20140076799 | Methods and Systems for Treating Wastewater - A method and system of treating wastewater is disclosed. The treatment system has a nitrification-denitrification system comprising a sorption system, a biofilm system, and an anaerobic digester that digests or converts at least a portion of the solids or sludge from the sorption system and biofilm system. | 03-20-2014 |
20140076800 | High Efficiency Wastewater Treatment System - A High Efficiency Treatment System (system) wastewater treatment system including a tank with a multi-chamber tank system that is designed to remove pollutants from domestic wastewater. Embodiments of the system consist of a pretreatment chamber, which is in fluid communication with an anoxic chamber, which is in fluid communication with an aeration chamber, which is in fluid communication with a clarification chamber, and which is in fluid communication with a polishing chamber. The system can be applied to remove suspended solids, BOD, ammonia, nitrate and TKN from wastewater. | 03-20-2014 |
20140083934 | Biological two-stage contaminated water treatment system - The systems may be used for treatment of water that contains contaminants. Water containing at least one of a nitrate, percholate, chromate, selenate and a volatile organic chemical is combined with nutrients and then is processed in an anoxic-anaerobic bioreactor. The combined effluent may also be oxygenated by dosing with hydrogen peroxide or liquid oxygen. The combined effluent of the bioreactor is dosed with a particle conditioning agent. The combined effluent treated water of the bioreactor is then filtered in a biofilter to produce a treated effluent stream. The influent water and combined effluent of the anoxic-anaerobic bioreactor may also be dosed with hydrogen peroxide to control biomass content in the system. | 03-27-2014 |
20140083935 | SYSTEMS, APPARATUSES AND METHODS FOR TREATING WASTE WATER - A system of treating high nitrogen content waste water is disclosed, where the system includes a precipitation and conditioning subsystem, an ammonia stripper subsystem, and a denitrification subsystem. The system is adapted to reduce nitrogen contamination to level below about 10 ppm and in certain embodiments below 3 ppm. | 03-27-2014 |
20140083936 | METHOD AND APPARATUS FOR WATER TREATMENT USING SCREENS - An apparatus and method for selecting, retaining or bioaugmenting solids in an activated sludge process for improving wastewater treatment using screens. The screens can be used to separate and retain solids based on size, compressibility or shear resistance. The screens are used to separate and select slow growing organisms, faster settling organisms, or materials added to absorb, treat or remove constituents in the activated sludge process. A swapping screen arrangement provides another means of selecting various particles. The exposed shear rate or time, particle compression, or SRTs can be adjusted manually and/or automatically in response to detected readings from an instrument such as a spectrophotometer or other optical approaches to optimize selection of organisms. The present disclosure may be configured as an activated sludge system operated at different solids residence times (SRT) for different solids fractions allowing slow growing organisms to get established in competition with faster growing organisms or aggregates thereof. | 03-27-2014 |
20140091035 | METHOD AND APPARATUS FOR MAXIMIZING NITROGEN REMOVAL FROM WASTEWATER - A reactor and control method thereof to maximize nitrogen removal and minimize aeration requirement through control of transient anoxia and aerobic SRT, repression of NOB, and control of dynamic DO concentrations or aeration interval by keeping the reactor NH | 04-03-2014 |
20140097136 | COMPOSITE MICROORGANISM REACTOR, AND APPARATUS AND METHOD FOR WATER TREATMENT USING THE SAME - The present invention relates to a composite microorganism reactor, wherein both dephosphorization and denitrification occur in one reactor, and an apparatus and a method for water treatment using the same. The composite microorganism reactor according to the present invention comprises: an inner space for accommodating sewage and waste; a partition wall placed in the inner space to divide the same into an anaerobic region for dephosphorization and an anoxic region for denitrification; a sewage and waste inlet portion placed at the upper portion of the anaerobic region; a sewage and waste outlet portion placed at the upper portion of the anoxic region to discharge sewage and waste outside; a sludge discharge hole placed at the lower portion of the inner space to discharge sludge precipitated in the sewage and waste flowing into the inner space; and a sewage and waste agitation device provided at the anaerobic region to agitate the sewage and waste of the anaerobic region, wherein the sewage and waste flowing into the anaerobic region through the sewage and waste inlet portion pass through the lower end of the partition wall to flow into the anoxic region, and then rise at the anoxic region to be discharged outside through the sewage and waste outlet portion. | 04-10-2014 |
20140116937 | APPARATUS AND METHOD FOR SEWAGE SLUDGE TREATMENT AND ADVANCED SEWAGE TREATMENT - A sludge treatment apparatus includes an aeration tank serving to degrade microorganisms other than | 05-01-2014 |
20140124440 | METHOD FOR REMOVING GENES ENCODING ANTIBIOTIC RESISTANCE - A method for removing antibiotic resistance genes (ARGs). The method includes the following steps: 1) coagulation and sedimentation of waste water; 2) biochemical treatment; 3) disinfection by peracetic acid; 4) sterilization by high pressure CO | 05-08-2014 |
20140131272 | ANAEROBIC TREATMENT OF INDUSTRIAL WASTEWATER - Feed water is processed in an anaerobic digester. A solid-liquid separation device, for example a sludge screw thickener, treats a stream drawn from the digester in a recirculation loop. The solids portion is returned to the digester to increase the solids retention time and the TSS concentration in the digester. A liquid portion with less than 5% of the solids in the stream is removed and optionally treated further. The flow rate to the solid-liquid separation device is preferably greater than the influent flow rate. The solid-liquid separation device may receive digestate at a TSS concentration of 4% or more and return a solids portion having a TSS concentration of over 10%. The feed water is preferably one or more industrial waste streams having a COD concentration of 20,000 to 50,000 mg/L and a TSS concentration from 1-5%. The organic loading rate may be 10-12 kg/COD/m3/day. | 05-15-2014 |
20140138308 | Optimized Process and Aeration Performance with an Advanced Control Algorithm - An automatically controlled wastewater treatment process can include automatically controlling nitrification and denitrification capacity in a water source. The nitrification and denitrification capacity can be automatically controlled simultaneously. In addition, the wastewater treatment process can also include automatically controlling solids retention time (SRT) and biological phosphorus removal in a water source as well as automatically controlling the removal of water from a containment device. | 05-22-2014 |
20140144836 | METHOD AND APPARATUS FOR WASTEWATER TREATMENT USING GRAVIMETRIC SELECTION - A method and a system for selecting and retaining solids with superior settling characteristics, the method comprising feeding wastewater to an input of a processor that carries out a treatment process on the wastewater, outputting processed wastewater at an output of the processor, feeding the processed wastewater to an input of a gravimetric selector that selects solids with superior settling characteristics, and outputting a recycle stream at a first output of the gravimetric selector back to the processor. | 05-29-2014 |
20140151294 | Method and Apparatus for Residential Water Recycling - A wastewater recycling system includes a biological reactor having anaerobic, anoxic, and aerobic chambers. A lift station including a pump is operatively connected to the biological reactor. The lift station receives biologically treated liquid from the biological reactor and pumps the liquid from the lift station. A filtration subsystem is operatively connected to the lift station. The filtration subsystem receives and filters the liquid pumped by the lift station. The filtration subsystem includes a salt-rejecting membrane filter comprising a concentrate recirculation conduit operatively connected to recirculate salt-rejecting membrane filter concentrate to a point along the wastewater recycling system upstream of the salt-rejecting membrane filter, thereby forming a salt concentration loop between said point along the wastewater recycling system and the salt-rejecting membrane filter. A post-filtration subsystem is operatively connected to receive salt-rejecting membrane filter permeate, and comprises a water disinfection system that disinfects the permeate thereby generating potable water. | 06-05-2014 |
20140158614 | METHODS AND APPARATUSES FOR WATER, WASTEWATER, AND WASTE TREATMENT - Described herein are methods and devices for biologically treating water and/or wastewater. The methods and devices for treating wastewater may be enhanced using an surge lifting device which moves water and/or solids using volumes of air (for liquid transfer and mixing) and the automatic sludge return mechanism, combined with alternating aeration on and off operation to achieve comprehensive nitrogen and phosphorus removal. This surge lifting device can provide occasional surges of water using large bubbles which are able to move great volume of liquid while minimizing dissolved oxygen transfer to the surrounding liquid. Use of the devices and processes herein provides a simple, eloquent approach to wastewater treatment with less operation and maintenance costs than conventional devices and/or processes. The same surge lifting device can also be installed in an anaerobic digester, and use the biogas generated below the device to automatically mix the digester, without external energy input. | 06-12-2014 |
20140209536 | BIOLOGICAL NITROGEN REMOVAL FEED PROCESS - In a wastewater treatment system comprised of an anoxic tank outputting to a biological reactor and outputting from the reactor to a clear well, a process for controlling the rate and timing of flow through the reactor by means of a floating pump within the anoxic tank. Further enhancement of denitrification is achieved by sending internal recycles into the sludge zone of the anoxic tank via a baffle positioned within the sludge layer. | 07-31-2014 |
20140217015 | USE OF PRIMARY SLUDGE FOR CARBON SOURCE IN AN AERATED-ANOXIC BIOREACTOR SYSTEM - A method and system of treating wastewater using primary sludge is disclosed. The treatment system includes a primary separator that separates a carbon source comprising non-solubilized suspended carbon from a source of wastewater. The non-solubilized suspended carbon is solubilized and used as a source of carbon in an aerated anoxic treatment system. | 08-07-2014 |
20140238932 | ENHANCED BIOSORPTION OF WASTEWATER ORGANICS USING DISSOLVED AIR FLOTATION WITH SOLIDS RECYCLE - Systems and methods for treating wastewater including a dissolved air flotation operation performed upon a portion of a mixed liquor output from a contact tank prior to the mixed liquor entering a biological treatment tank. | 08-28-2014 |
20140246369 | WASTEWATER TREATMENT PROCESS AND SYSTEM - A process and system for treating wastewater is described. The invention degrades sludge produced by treatment of the wastewater to reduce or eliminate the need for sludge dewatering and disposal. The invention also reduces the amount of nutrient additives required to sustain the aerobic wastewater treatment process. In one embodiment the invention includes the steps of (a) providing an aerobic treatment system receiving a supply of the wastewater; (b) treating a supply of the sludge to rupture microbial cells present therein to produce treated sludge having an increased liquid:solid ratio and an increased degradation potential in comparison to untreated sludge; (c) conveying a supply of the treated sludge to the aerobic treatment system; and (d) substantially degrading the supply of treated sludge in the aerobic treatment system. The treated sludge may optionally be subjected to anaerobic digestion prior to delivery to the aerobic treatment system. | 09-04-2014 |
20140263041 | METHOD AND APPARATUS FOR MAXIMIZING NITROGEN REMOVAL FROM WASTEWATER - A reactor and control method for maximizing nitrogen removal and minimizing aeration requirements through control of transient anoxia and aerobic SRT, repression of NOB, and control of dynamic DO concentrations or aeration interval by keeping the reactor NH | 09-18-2014 |
20140263042 | SIMULTANEOUS ANOXIC BIOLOGICAL PHOSPHORUS AND NITROGEN REMOVAL - Methods and systems are provided for treating wastewater to simultaneously remove nitrogen, carbon, and phosphorus. The process includes an anoxic tank that receives at least two streams, including plant influent wastewater and return activated sludge. These streams are mixed in the anoxic tank to promote phosphorus release and fermentation of particulate and dissolved organic matter. The mixed liquor is transferred to an aerated tank having low dissolved oxygen concentrations to promote development of phosphorus-release bacteria that is eventually recycled to the anoxic tank by way of the return activated sludge. Simultaneous nitrification, denitrification, and phosphorus release occur in the aerated tank. A membrane tank separates treated effluent from activated sludge in a membrane tank. | 09-18-2014 |
20140311970 | ROTATING DRUM MICRO-SCREEN FOR PRIMARY WASTEWATER TREATMENT - A rotating screen has one or more panels arranged into a cylinder, or drum. The panels have openings in a micro-screening range, for example 100 microns or less. Wastewater to be screened is fed to the interior of the drum. The drum rotates constantly but the rotation may be discontinuous and the speed of rotation may be variable. The drum may be cleaned by an air knife. If the wastewater contains oil and grease, a short hot water spray may be provided before cleaning with the air knife. Optionally, an internal auger conveys solids down the length of the drum to an outlet. The rotating screen may be used for primary treatment of wastewater. The rotating screen may be used produce screenings with a dried solids concentration of 5% or more, for example 6-7%. The primary sludge may be treated in an anaerobic digester. | 10-23-2014 |
20140319053 | METHOD AND A SYSTEM FOR OUT-COMPETING GLYCOGEN-ACCUMULATING ORGANISMS IN A SUBSTANCE - A method and a substance treatment system for reducing a ratio of Glycogen-Accumulating Organisms relative to the total amount of Glycogen-Accumulating Organisms and Polyphosphate-Accumulating Organisms in a substance. | 10-30-2014 |
20140346108 | ORGANICS AND NUTRIENT RECOVERY FROM ANAEROBIC DIGESTER RESIDUES - Sludge from an anaerobic digester is treated to recover one or more of fibers, or solids or liquids with a high nutrient content. The solids or liquids can be used as a fertilizer. The fibers can be used in a plant growing medium. Solids are separated from liquids in the sludge and dried. The solids may be dried to produce a flake or pellet. Ammonia in the liquids is recovered and used to produce a concentrated acidic ammonium salt solution. This solution may be mixed with the solids to produce a nitrogen enhanced solid. The fibers and solids or liquids can also be used in combination to produce an enhanced plant growing medium. A device and process for removing ammonia from a liquid can be used in the system or separately. | 11-27-2014 |
20140346109 | Nutrients Removal from Water/Wastewater Using Simultaneous Treatment By An Anammox/PAO Reactor (STAR) - There is described a number of biological nutrient removal processes including Anammox Process, Biological Phosphorus Removal (BPR), Partial Nitrification, Full Nitrification, Partial Denitrification, Full Denitrification and Denitrification via BPR taking place in a Simultaneous Treatment of Anammox/PAOs Reactor (STAR) coupled with an Anaerobic Lateral Unit (ALU). In one aspect, there is a wastewater treatment system comprises a bioreactor having three consecutive stages: and an anaerobic lateral unit (ALU) coupled to the bioreactor; the bioreactor and A LU are configured to conduct biological removal of nutrients from the wastewater using a plurality of biological processes simultaneously. The three consecutive stages of the bioreactor comprise two Anoxic stages configured consecutively followed by one Aerobic stage. The stages may be oriented vertically and use gravity for fluid flow. | 11-27-2014 |
20140360933 | METHODS AND APPARATUS FOR NITROGEN REMOVAL FROM WASTEWATER - The present invention is directed to equipment, systems and methods for the biological removal of nitrogen from wastewater. The ammonium removal processes disclosed herein can be used in both batch and continuous flow biological reactors with real time control of nitrogen loading to effectively cultivate ammonium oxidizing bacteria alone, as well as in a mixture of ammonium oxidizing bacteria with anaerobic ammonium oxidizing bacteria in a single bioreactor. Both batch and continuous flow biological reactors have a mean of separating solids retention time (SRT) of suspended nitrifying biomass from suspended anammox biomass. | 12-11-2014 |
20140367330 | WASTEWATER TREATMENT PROCESS THAT UTILIZES GRANULAR SLUDGE TO REDUCE COD CONCENTRATION IN WASTEWATER - A wastewater treatment process that employs anaerobic granular sludge or biomass to remove chemical oxygen demand (COD) from the wastewater. Certain constituents, such as COD, nitrogen, calcium, other dissolved solids, suspended solids, can impair the effectiveness of the granular biomass. Thus, the process employs treatment units to remove these inhibiting constituents to produce a treated effluent or stream. At least a portion of the treated effluent is recycled and mixed with the influent wastewater to reduce the concentration of these inhibiting constituents. | 12-18-2014 |
20150014245 | MODULAR WASTEWATER TREATMENT PLANT - The invention relates to a wastewater treatment plant, specifically a modular plant for the treatment of organic wastewater, in which the number of devices depends on the amount of water to be treated and on the quality of the starting water and that required for the water at the end of the process. The treatment plant includes multiple devices, each representing a treatment step, and the devices can be connected in series, in parallel or in series and parallel. In addition, the devices used in the process are designed to require a minimum amount of maintenance, owing to the inclusion of a self-cleaning system. Since the system requires minimal power and maintenance, it is considered optimal for use in rural communities, livestock farms or buildings. | 01-15-2015 |
20150021264 | TREATMENT METHODS AND TREATMENT SYSTEMS FOR PLANT EFFLUENTS - A plant effluent treatment method includes a mixing treatment step that mixes a microorganism activating agent into plant effluent containing organic compounds as discharged from a chemical plant, petroleum plant or petrochemical plant and discharges it as mixing treatment effluent, and an aerobic treatment step that subjects the mixing treatment effluent to aerobic biological treatment and solid-liquid separation treatment in a membrane bioreactor tank. | 01-22-2015 |
20150048023 | BIOREACTOR AND THE WASTE WATER TREATMENT METHOD - An aim of the invention is to provide a bioreactor and a waste water treatment method that employs this tank, whereby anaerobic and aerobic microorganism treatment can be continuously carried out, even when the volume of the bioreactor is large, and whereby installation costs can be minimized. The invention comprises an outer tank ( | 02-19-2015 |
20150068976 | PROCESS FOR TREATING AN EFFLUENT FOR THE PURPOSE OF BRINGING DOWN THE PHOSPHATE CONTENT THEREOF, COMPRISING A STEP OF OPTIMIZED WET HEAT TREATMENT, AND CORRESPONDING EQUIPMENT - The invention pertains to a method for treating an effluent to be treated in order to reduce its phosphates content, said method comprising a step of anoxic biological treatment of said effluent to be treated, producing a first effluent, a step of aerobic biological treatment of said first effluent, producing a second effluent, a step of recirculating at least a part of said second effluent to the inlet of said anoxic biological treatment step, a step of liquid/solid separation of at least a part of said second effluent, producing a treated effluent and a first denser effluent, a step for producing volatile fatty acids including a wet heat treatment, at a temperature of 100° C. to 350° C., for a residence time of between 10 and 180 minutes, of at least a part of said first denser effluent, a step of anaerobic biological treatment of at least a part of the effluent coming from said wet heat treatment step, and a step of recirculating at least a part of the effluent coming from said anaerobic biological treatment step to the inlet of said anoxic biological treatment step. | 03-12-2015 |
20150114904 | SYSTEM AND METHOD FOR WASTE TREATMENT - Systems and methods for treating multi-component waste streams. In general, systems and methods described herein employ a first chamber and a second chamber separated by a barrier and a filtration component that is fluidically connected to the first and second chambers. A waste stream to be treated will flow into the first chamber for treatment of the carbon-containing waste, then into the filtration component for the separation of the stream into a solid waste fraction and a liquid waste fraction. | 04-30-2015 |
20150144554 | WASTEWATER TREATMENT PROCESS WITH MOVING BED BIOREACTOR (MBBR) - In a wastewater treatment system, feed water is processed by anaerobic digestion, preferably in an anaerobic moving bed bioreactor (AnMBBR). Effluent from the AnMBBR passes through one or more solid-liquid separation units. A solids portions is treated by hydrolysis or suspended growth anaerobic digestion. A liquid portion of the hydrolysis or suspended growth anaerobic digestion effluent is returned to the AnMBBR or blended with effluent from the AnMBBR. The AnMBBR effluent may be treated with an aerobic moving bed bioreactor (MBBR) before the one or more solid-liquid separation steps. Membrane filtration may provide a first solid-liquid separation step. A thickened waste stream may be withdrawn from a recirculation loop flowing from the first solid-liquid separation unit to the MBBR. Optionally, a solids portion separated from the feed water upstream of the AnMBBR may also be treated by hydrolysis or suspended growth anaerobic digestion. | 05-28-2015 |
20150315049 | NITROGEN-CONTAINING COMPOUNDS FOR BACTERIAL CONTROL IN WATER BASED FLUIDS - An effective amount of at least one nitrogen-containing compound may be added to a wastewater stream within a water treatment system. The wastewater stream may have or include an aqueous-based fluid, a first bacteria, a second bacteria, organic acids, and combinations thereof. The first bacteria may be or include, but is not limited to, filamentous bacteria, | 11-05-2015 |
20150321937 | METHOD AND SYSTEM FOR TREATING WASTEWATER IN AN INTEGRATED FIXED FILM ACTIVATED SLUDGE SEQUENCING BATCH REACTOR - An integrated fixed film activated sludge sequencing batch reactor is provided where both suspended biomass and biomass supported on biofilm carriers are utilized to biologically treat wastewater received by the sequencing batch reactor. The sequencing batch reactor includes two hydraulically connected tanks with suspended biomass being contained in at least one tank and biomass supported on biofilm carriers in the other tank. | 11-12-2015 |
20150336831 | WASTEWATER TREATMENT PROCESS AND SYSTEM - A process and system for treating wastewater is described. The invention degrades sludge produced by treatment of the wastewater to reduce or eliminate the need for sludge dewatering and disposal. The invention also reduces the amount of nutrient additives required to sustain the aerobic wastewater treatment process. In one embodiment the invention includes the steps of (a) providing an aerobic treatment system receiving a supply of the wastewater; (b) treating a supply of the sludge to rupture microbial cells present therein to produce treated sludge having an increased liquid:solid ratio and an increased degradation potential in comparison to untreated sludge; (c) conveying a supply of the treated sludge to the aerobic treatment system; and (d) substantially degrading the supply of treated sludge in the aerobic treatment system. The treated sludge may optionally be subjected to anaerobic digestion prior to delivery to the aerobic treatment system. | 11-26-2015 |
20150353395 | BIOLOGICAL WASTEWATER TREATMENT PROCESSES THAT ENHANCES THE CAPACITY FOR POLYHYDROXYALKANOATE ACCUMULATION IN A MIXED CULTURE BIOMASS - A method of biologically treating wastewater and, at the same time, incorporating processes that aim to increase the PHA accumulation potential of biomass used in the treatment of the wastewater. The method includes biologically treating the wastewater and enhancing PHA accumulation potential of the biomass by subjecting the biomass to a primary feast-famine process where the biomass is subjected to repeated cycles of feast and primary famine conditions. From time-to-time, the method entails deviating from the primary feast-famine process to a secondary famine process. The secondary famine process comprises subjecting the biomass to secondary famine conditions for a period of time that is substantially greater than the average time period of the primary famine conditions. | 12-10-2015 |
20150368131 | INTEGRATED SYSTEM OF A METHANOGENIC ANAEROBIC REACTOR AND MEMBRANE BIOREACTOR FOR THE ELIMINATION OF ORGANIC MATERIAL AND NITROGEN FROM WASTEWATER - Integrated methanogenic anaerobic reactor and membrane bioreactor, and method for eliminating organic matter and nitrogen in urban or industrial wastewater, preferably with COD concentrations between 150 and 5000 mg/L and where the eliminations of total nitrogen that occur are between 15 and 50 mg/L, at temperatures above 15° C. The wastewater treatment takes place thanks to three stages of treatment: methanogenic anaerobic stage, anoxic stage with biofilms and suspended biomass and aerobic filtration stage with biofilms and suspended biomass. | 12-24-2015 |
20160009580 | WASTEWATER TREATMENT SYSTEM AND METHODS | 01-14-2016 |
20160039695 | SYSTEM AND METHOD OF TREATING WASTEWATER - A system and a method comprises a chamber configured to receive a flow of a wastewater mixture from an input. A first baffle wall forms a first channel within the chamber. The wastewater mixture flows from an input to an output of the first channel. A second baffle wall forms a second channel and a third channel within the chamber. The wastewater mixture flows from the output of the first channel to an input of the second channel to an output of the second channel to an input of the third channel to an output of the third channel. The output of the third channel is configured to direct the flow to an output from the first chamber. | 02-11-2016 |
20160075577 | MOVING BED MEDIA FLOW EQUALIZATION REACTOR - Moving bed media serving as a growth surface for bacteria that remove soluble carbonaceous BOD, soluble inorganic ammonia nitrogen, phosphorous, nitrate nitrogen or nitrite nitrogen from wastewater are contained in a variable liquid depth, variable volume, hydraulic flow equalization basin. The equalization basin can be divided into different treatment sections by installing separator screens. Fat accumulation on the moving media, which could cause the media to float or in some other way cause the media to be ineffective, can be prevented by a fat, oil, and grease removal process in a dissolved air flotation cell upstream of the flow equalization basin containing the moving bed media. The moving bed media are retained in the basin by a suitable media screen as the liquid level and volume increases or decreases in the basin depending upon the effluent pumping rate vs. the influent flow rate. | 03-17-2016 |
20160083268 | Enhanced Biosorption of Wastewater Organics using Dissolved Air Flotation with Solids Recycle - Systems and methods for treating wastewater including a dissolved air flotation operation performed upon a portion of a mixed liquor output from a contact tank prior to the mixed liquor entering a biological treatment tank. | 03-24-2016 |
20160096754 | Wastewater Treatment System - A system and method for treating wastewater includes two or more biological reaction zones separated by chamber walls. The system and method for treating wastewater includes static recycle of a mixed liquor from a second biological reaction zone to a first biological reaction zone. | 04-07-2016 |
20160096755 | METHOD OF BIOLOGICAL WASTEWATER TREATMENT - A method of biological wastewater treatment, having an anaerobic zone, an anoxic zone and an aerobic zone, where raw wastewater is brought to the anaerobic zone, then, the wastewater is directed to the anoxic zone and eventually to the aerobic zone, afterwards, a part of the content of the aerobic zone is returned to the anoxic zone, and the rest of the wastewater from the aerobic zone is directed together with the sludge, directly or through additional zones, to a secondary settling tank where the treated wastewater is separated from the sludge, and the treated wastewater and excess sludge located on the bottom of the secondary settling tank are discharged outside the secondary settling tank, and the rest of the sludge accumulated in the secondary settling tank is passed to the anaerobic zone directly or via the anoxic zone in the process of external recirculation. | 04-07-2016 |
20160102004 | WATER CLEANING SYSTEM, WATER CLEANING METHOD, STARTUP METHOD FOR WATER CLEANING SYSTEM, AND WATER CLEANING UNIT - A water cleaning system | 04-14-2016 |
20160107909 | ORBITAL WASTEWATER TREATMENT SYSTEM AND METHOD OF OPERATING SAME - An orbital wastewater treatment system includes a tank assembly, at least one impeller, at least one flow-diversion mechanism, at least one actuator, optionally at least one sensor disposed in the tank assembly, and a control unit. The tank assembly has three treatment zones and pairs of passages between the first zone and the second zone and between the second zone and the third zone. The impeller disposed in the tank assembly moves mixed liquor under process about the tank assembly. Multiple flow-diversion mechanisms disposed at the passages between the zones of each pair control process conditions pursuant to a predetermined schedule and/or at least partially in accordance with input from the one or more sensors. | 04-21-2016 |
20160115054 | Systems and Methods for Enhanced Facultative Biosolids Stabilization - A control system and method for digestion of waste activated sludge (“WAS”) includes treating the WAS first at anaerobic conditions for ≦a fixed period of time and then at aerobic conditions for ≦a fixed period of time prior to either dewatering or optional anoxic conditions followed by dewatering, supplying air to initiate aerobic conditions when a predetermined set point for maximum ammonium nitrogen has been reached within the fixed anaerobic time, and initiating dewatering or optional anoxic conditions followed by dewatering when a predetermined set point for minimum ammonium nitrogen and optional standards for vector and pathogen reduction are met within the fixed aerobic time, the method and system including monitoring either consumption of soluble alkalinity or orthophosphate reduction or both for maximum orthophosphate reduction within aerobic time. | 04-28-2016 |
20160122215 | REACTOR SETUP - The present invention provides a process for reducing the start-up time of an aerobic granular sludge reactor, said process comprising starting said reactor with an active biomass comprising fragmented aerobic sludge granules. | 05-05-2016 |
20160130164 | Devices, Systems and Methods for Facilitating Nutrient Removal by Anaerobic Ammonia Oxidation - A system and method of treating wastewater having at least one undesirable biological species is provided. In accordance with embodiments, a wastewater treatment system is provided comprising a main biological treatment train including at least one first unit operation configured to perform an anaerobic ammonium oxidation process, and at least one subsystem configured to increase a concentration of anammox bacteria in the at least one first unit operation, the treatment system arranged to reduce the concentration of total nitrogen in the wastewater. | 05-12-2016 |
20160137537 | METHOD AND APPARATUS FOR WASTEWATER TREATMENT USING GRAVIMETRIC SELECTION - A method and a system for selecting and retaining solids with superior settling characteristics, the method comprising feeding wastewater to an input of a processor that carries out a treatment process on the wastewater, outputting processed wastewater at an output of the processor, feeding the processed wastewater to an input of a gravimetric selector that selects solids with superior settling characteristics, and outputting a recycle stream at a first output of the gravimetric selector back to the processor. | 05-19-2016 |
20160200611 | ANAMMOX REACTOR STAGE IN A FLOW EQUALIZATION REACTOR PROCESS | 07-14-2016 |
20160200615 | DUAL RETURN ACTIVATED SLUDGE PROCESS IN A FLOW-EQUALIZED WASTEWATER TREATMENT SYSTEM | 07-14-2016 |
20160251247 | SULPHUR CYCLE-ASSOCIATED DENITRIFYING ENHANCED BIOLOGICAL PHOSPHORUS REMOVAL (SD-EBPR) UTILIZING SULPHUR COMPOUNDS AS ELECTRON CARRIERS FOR BIOLOGICAL NUTRIENT REMOVAL OF WASTEWATER TREATMENT | 09-01-2016 |
20160376178 | VERTICAL SEWAGE TREATMENT DEVICE AND METHOD - The present invention provides a vertical sewage treatment device including an anaerobic chamber, an anoxic chamber, an aerobiotic chamber, and a secondary precipitation chamber, wherein the anaerobic chamber, the anoxic chamber, the aerobiotic chamber, and the secondary precipitation chamber are vertically arranged in sequence from the bottom to the top. According to another aspect, the present invention also provides a sewage treatment method using the foregoing vertical sewage treatment device. The sewage treatment device and method of the present invention have the advantages such as a reduced occupied area, improved oxygenation efficiency, a decreased head loss, a reduced invalid structure volume, and a low heat loss. | 12-29-2016 |