Entries |
Document | Title | Date |
20080237139 | METHOD AND SYSTEM OF WATER MANAGEMENT IN THE AGGREGATE INDUSTRY - A method of managing water is provided, in which the water is discharged from an aggregate plant, and therefore contains a large number of fines. The water is first passed through a mesh screen to remove large particles and then collected in a sump. From the sump the water is pumped to a centrifugal cyclone, where some of the fines are separated from the water. Flocculent is then applied to the water, before the water is collected in a pond. | 10-02-2008 |
20090026145 | Process for dewatering a mineral slurry concentrate and increasing the production of a filter cake - The present invention provides a process for dewatering a mineral slurry concentrate and increasing the production of the resulting filter cake consisting essentially of mixing an aqueous mineral slurry concentrate with an effective amount of a nonionic surfactant and an effective amount of a cationic polymer to form a nonionic surfactant and cationic polymer treated aqueous mineral slurry concentrate, and subjecting the treated aqueous mineral slurry concentrate to a liquid water removal process for dewatering the treated aqueous mineral slurry and for increasing the production of a resulting filter cake of the dewatered mineral slurry. An improved mineral slurry concentrate composition and an improved mineral concentrate filter cake is also disclosed. | 01-29-2009 |
20090050571 | CATIONIC POLYMER DISPERSIONS, METHOD FOR PRODUCING SAID DISPERSIONS AND USE THEREOF - The invention relates to water-in-water polymer dispersions containing a polymer A with a cationic monomer fraction of up to 60 wt. % and at least one polymer dispersant B, based on cationised dialkylaminoalkyl (meth)acrylamides with an average molecular weight of between 75,000 and 350,000 g/mol. The invention also relates to a method for producing said dispersions and to the use of the latter. | 02-26-2009 |
20090065442 | WASTEWATER TREATMENT AND RECYCLING SYSTEM - A system and process for removing contaminants from wastewater where the wastewater is treated into a cleaned water that can be reused or discharged into the environment. The wastewater is transported through purification sections, depending on the system including several of the following: pre-treatment via screening and weirs to remove debris and certain heavy solids; a second pretreatment via a sump; strainer; conductivity solution injection system and electrolytic coagulation system; polymer injection system; inline mixers for mixing the polymer in the wastewater stream; retention tubes for providing residence time for the polymer to react in the wastewater stream; a multi-stage separation system comprised of a plurality of water separation compartments for consecutively separating contaminants from the wastewater stream by removing contaminants that float and heavy contaminants that settle to the bottom; and an ozone treatment system. Except for the pretreatment sections, each of the treatment sections are contained within an enclosure cabinet that includes controller and control panels as well and feed containers for the conductivity fluid and polymer. | 03-12-2009 |
20090114601 | Device and Method for Dynamic Processing in Water Purification - A transformational approach to water treatment is provided that incorporates membrane-free filtration with dynamic processing of the fluid to significantly reduce treatment times, chemical cost, land use, and operational overhead. This approach provides hybrid capabilities of filtration, together with chemical treatment, as the water is transported through various spiral stages. | 05-07-2009 |
20090242490 | Method and Apparatus for Fluid Separation - A method is disclosed for separating a multiphase fluid stream comprising a heavier fluid component and a lighter fluid component, the method comprising causing the fluid to flow along a first helical flowpath, the first helical flowpath having a first pitch, the first helical flowpath being sufficiently long to establish a stabilised rotating fluid flow pattern for the stream causing the uniform rotating fluid to flow along a second helical flowpath, the second helical flowpath having a second pitch, wherein the second pitch is greater than the first pitch; and removing the lighter fluid from a radially inner region of the second helical flowpath. An apparatus for carrying out the method is also disclosed. The method and apparatus are particular suitable for the separation of oil droplets from water, especially from water for reinjection into a subterranean formation as part of an oil and gas production operation. The method and apparatus are conveniently applied on a modular basis. | 10-01-2009 |
20090301973 | WATER REACTION TANK - A water reaction tank for reacting water containing suspended solids with a flocculant includes a housing having an input, an output, and a water flow path between the input and the output. The flow path has a mixing section and a reaction section. Sealable flocculant ports are provided for inserting a flocculant into the mixing section of the housing. Each of the mixing section and the reaction section contains baffles. The mixing section baffles encourage turbulent flow to increase contact with the flocculant, and the reaction section baffles encourage turbulent flow and increase the length of the water flow path. | 12-10-2009 |
20110024359 | METHOD FOR REMOVING CHLORIDE FROM AQUEOUS SOLUTION - A method for removing chloride from an aqueous solution having an initial chloride ion (Cl | 02-03-2011 |
20110139724 | Composition and Method for Reducing Chlorite in Water - A composition and method for reducing a concentration of chlorite in water. The composition comprises a mixture of ferrous iron and a polyaluminum chloride. The mixture is contacted with a water containing chlorite. | 06-16-2011 |
20110226702 | Solubilized Heavy Metal Binding Reagent - A solubilized reagent for treating and binding heavy metals and method of producing and process of using the same. The solubilized reagent includes an isolated supernatant of a slurry or a saturated or supersaturated solution of alkali metal/alkaline earth metal carbonate, alkali metal/alkaline earth metal sulfide, and triple super phosphate. | 09-22-2011 |
20110240561 | Configurations and Methods of Treatment of Silicate-Containing Waste Streams - Contemplated wastewater treatment plants and processes comprise a unit in which a silicate-containing waste stream is combined with an alkaline process stream to so form a pH-controlled intermediate that is then fed to a reactor in which carbonization effects precipitation of the silicate. Following a particle growth step in the reaction vessel that renders the precipitate suitable for filtration, the so produced silicon dioxide can be safely disposed of in a landfill while the liquid can be discharged or sent to a zero liquid discharge pond to precipitate sodium carbonates. | 10-06-2011 |
20110315637 | METHODS TO RECOVER AND RECLAIM HYDROCARBONS OR HYDROPHOBIC SUBSTANCES IN AN AQUEOUS ENVIRONMENT - The present invention provides useful biodegradable and environmentally friendly cost effective methods for oil recovery and reclamation from oil spills and chemical spills. More particularly, methods to recover and reclaim hydrocarbons or hydrophobic substances in an aqueous environment. | 12-29-2011 |
20120067825 | EFFICIENT METHODS FOR OPERATION WITH HIGH PRESSURE LIQUIDS - Methods for more efficiently carrying out various operations through the use of pressure transfer between streams. The methods are applicable for use in conjunction with a wide range of processes including precipitation reactors ( | 03-22-2012 |
20120080385 | FACILITY FOR TREATING AN AQUEOUS FLUID BY CONTACT WITH A FLUIDISED BED OF COAGULATED ACTIVATED CARBON IN POWDER FORM - The present invention relates to a treatment installation of aqueous fluid, in particular to ensure elimination of organic micropollutants and natural organic matter, comprising a single reactor ( | 04-05-2012 |
20120091066 | Capturing and Storing Excess Co2 by Seeding Melt Water Lakes from Glacial Masses with Metal Hydroxides - A method of capturing and storing excess carbon dioxide (CO2) includes seeding melt water lakes formed on glacial masses with metal hydroxides. The excess CO2 is then stored as a precipitate from the seed of CO2 and metal hydroxides. Further, a method to apply nutrient minerals directly to pack-ice and open water promotes carbon sequestration by chlorophyll and subsequently phytoplankton, oxygen, and zooplankton. | 04-19-2012 |
20120125862 | USE OF SILICON-CONTAINING POLYMERS TO IMPROVE RED MUD FLOCCULATION IN THE BAYER PROCESS - The suspended solids content of a Bayer process stream is reduced by contacting the stream with silicon-containing polymers. | 05-24-2012 |
20120138541 | Systems, Compositions, and Methods For Dewatering Mine Tailings - Systems, compositions, and methods for dewatering and/or increasing a mechanical strength of mine tailings. These systems, compositions, and methods may include combining mine tailings with wicking fibers to form a composite mine tailings mixture. The wicking fibers may provide a conduit for the removal of fluid from the composite mine tailings mixture. The composite mine tailings mixture further may include a binder that may decrease repulsive forces among fine particles that comprise the mine tailings and/or increase attractive forces among the fine particles, leading to a separation of the fine particles from at least a portion of the fluid contained within the composite mine tailings mixture. The composite mine tailings mixture may be placed in a storage or dewatering area as a composite mine tailings mixture deposit, which may include internal structure, such as layers of the composite mine tailings mixture and/or long-range orientation of the wicking fibers contained therein. | 06-07-2012 |
20120138542 | PROCESS FOR IMPROVING INLINE TAILINGS TREATMENT - A process for improving inline mineral slurries treatment comprises successively: providing an in-line flow of slurries in a main stream; introducing at least one polymer into the main stream through at least one polymer injection point to cause dispersion of the polymer and to start the coagulation and/or the flocculation of slurries to produce treated slurries; and splitting the main stream containing treated slurries into two streams respectively: a discharge stream which directly transfers a part of treated slurries to the deposit area, and a split stream which reintroduces the other part of treated slurries into the main stream through at least a reinjection point in a location prior to the at least one polymer injection point. | 06-07-2012 |
20120145645 | CLARIFICATION OF HYDROCARBONS AND SUSPENDED MATTER FROM AN AQUEOUS MEDIUM - A method for removing components from an aqueous medium is described. The method includes dispensing a formulation comprising one or more of zinc chloride, calcium chloride, zirconium acetate and zirconium oxychloride to an aqueous medium. The method includes allowing the formation of floccules in the aqueous medium, wherein the floccules contain the component to be removed. The method includes separating the floccules from the aqueous medium to remove the component. | 06-14-2012 |
20120152851 | POLYMER AND METHODS FOR PREPARING AND USING THE SAME - The invention relates to a polymer comprising structural units of formula | 06-21-2012 |
20120152852 | PROCESSES FOR REMOVING HYDRAZINE FROM HYDROXYLAMINE SOLUTIONS - The present invention relates to processes for reducing or eliminating the amount of hydrazine from a hydroxylamine-free base containing hydrazine by treating said hydroxylamine-free base with a scavenger agent, and to the hydroxylamine-free base thereby obtained, as well as to its use for producing microdispersions containing a hydroxamated polymer for use as a flocculant in the Bayer process. | 06-21-2012 |
20120152853 | SYSTEM AND METHOD FOR REDUCING EMISSIONS IN A HOG CONFINEMENT FACILITY - A system and method of reducing ammonia emissions. The system and method include a facility having a waste storage compartment below a floor comprised of slats with openings therebetween. A plurality of injection pipes are attached to a bottom surface of the slats. Each of the plurality of injection pipes includes a plurality of precipitation nozzles. | 06-21-2012 |
20120279925 | METHOD AND APPARATUS FOR TREATING NATURAL GAS AND OIL WELL DRILLING WASTE WATER - A method of treating contaminated water effluent from a well drilling operation. The method comprises decomposing organic contaminants in the effluent by bubbling a gas containing ozone through the effluent; adding a coagulant to increase the particle size of solid particles contained in the effluent; adding a flocculant to increase the particle size of solid particles contained in the effluent, thereby forming flocs suspended in the effluent; and filtering the flocs from the effluent to produce a filtrate and flocculated solids. The method may further comprise adding the coagulant into a stream of effluent flowing within a first conduit under controlled shear conditions, and adding the flocculant into a stream of effluent containing pin flocs flowing within a second conduit under controlled shear conditions. The method may further comprise delivering the effluent containing the suspended flocs into a filter through a conduit floating in the effluent contained in the filter. | 11-08-2012 |
20120285893 | METHODS FOR REMOVING CONTAMINANTS FROM AQUEOUS SYSTEMS - Methods for removing one or more contaminants from an aqueous stream comprising: adding one or more hydraulic binders and one or more promoters to the aqueous stream, and separating the contaminants from the aqueous stream are provided. The methods may be used for removing contaminants that are arsenic-based, selenium-based, cadmium-based, zinc-based, mercury-based, iron-based, chromium-based and/or phosphate-based. | 11-15-2012 |
20120285894 | SYSTEM AND METHOD FOR THE TREATMENT OF WASTEWATER - A system and method for the treatment of wastewater. In one aspect, the invention can be a method of treating wastewater comprising: a) flowing the wastewater along an axis; b) injecting a polymer into the wastewater at multiple injection points to flocculate suspended solids within the wastewater, the multiple injection points arranged in a circumferentially spaced apart manner about the axis; and c) removing the flocculated suspended solids from the wastewater to form a treated water. In another aspect, the invention can be a system for flocculating suspended solids in wastewater comprising: a conduit through which wastewater flows along an axis; a plurality of nozzles operably coupled to a source of a first polymer; and the plurality of nozzles arranged in a circumferentially spaced apart manner about the axis, the plurality of nozzles operably coupled to the conduit to inject the first polymer into the wastewater flowing through the conduit. | 11-15-2012 |
20130062289 | TREATMENT OF PHOSPHATE-CONTAINING WASTEWATER - A method for treating, and recovering phosphate compounds from, phosphate-containing wastewater. The method includes the steps of: (a) removing fluoride from the wastewater; (b) recovering a phosphate compound from the wastewater by maintaining super saturation conditions for the phosphate compound; and (c) polishing the wastewater. A silica removal step may be optionally performed after step (a) and before step (b). | 03-14-2013 |
20130068698 | MOBILE WATER FILTRATION UNIT - A water filtration unit, comprising: a housing; a passive separator in the housing to receive a pressurized source of particulate-heavy water, to separate most of the particulate mass from the water and to output particulate-lean water; particulate egress means disposed at least partly within the housing to receive, and allow disposal of, the particulate separated from the water; at least one filtration module in the housing to each receive the particulate-lean water simultaneously, to filter remaining particulate and contaminants from the particulate-lean water by allowing passage of the water through porous filtration media of each module under gravity; and at least one outlet conduit coupled to an outlet in a wall of the housing to receive filtered water from the filtration modules and provide the filtered water to a fluid sink outside the housing. | 03-21-2013 |
20130098843 | APPARATUS AND METHOD FOR TREATING SLURRIES - An apparatus for treating slurries, in particular biogenic or industrial slurries, can include at least one treatment rotor which is arranged or can be arranged in the slurry and which rotates or is rotatable about an axis of rotation (R), with treatment elements which project outward, as seen from the axis of rotation (R), and between which interspaces are formed, at least some of the treatment elements having, at—at least one, preferably each—adjacent interspace, in each case at least one treatment edge, preferably at least two treatment edges spaced apart from one another, each of these treatment edges running from the inside outward, as seen from the axis of rotation. | 04-25-2013 |
20130118989 | Process Scheme to improve Divalent Metal Salts Removal from Mono Ethylene Glycol (MEG) - A MEG reclamation process includes the step of increasing above 2,000 ppm the divalent metal salts concentration of a rich (wet) MEG feed stream flowing into a precipitator. The increasing step includes routing a salts-saturated MEG slipstream from the flash separator it to the precipitator. The slipstream may be mixed with a fresh water feed stream, a portion of the rich MEG feed stream, or some combination of the two. The rich MEG feed stream also may be split into two streams, with a portion of the stream being heated and routed to the flash separator and the other portion being combined as above with the removed slipstream. The process can be performed on the slipstream after dilution and prior to entering the precipitator or after being loaded into the precipitator. Removal of the insoluble salts may be done in either a batch or continuous mode. | 05-16-2013 |
20130233805 | Method and Device for In-Line Injection of Flocculent Agent into a Fluid Flow of Mature Fine Tailings - A method and device for in-line injecting of flocculent agent into a fluid flow of mature fine tailings (MFT). The method includes the steps of: a) providing a fluid flow of mature fine tailings to be treated along a given channel fluidly connected to the pipeline; b) providing a source of flocculating agent; and c) introducing flocculating agent inside the fluid flow of mature fine tailings via a plurality of injection outlets for injecting the flocculating agent into the fluid flow in a dispersed manner so as to increase an exposed surface area of the injected flocculating agent and thus increase a corresponding reaction with the mature fine tailings, for an improved flocculation of said mature fine tailings, and/or other desired end results. Also disclosed is a kit with corresponding components for assembling the in-line injection device to be connected in-line with the pipeline carrying the mature fine tailings to be treated. | 09-12-2013 |
20140091042 | WASHING METHOD OF GOETHITE-CONTAINING RED MUD - A washing method of red mud that is produced when an alumina-containing ore having a goethite to hematite mass ratio of 60/40 (goethite/hematite) or more in the iron component thereof is heat-treated with an alkaline solution at a temperature of 110° C. to 160° C. to obtain an aluminate liquor, including: mixing the red mud with a diluting fluid to obtain suspension that has an aluminum concentration of 95 g/L or less in terms of Al | 04-03-2014 |
20140144846 | Methods For The Recycling of Wire-Saw Cutting Fluid - A process is provided for treating coolant fluid used in wire-saw cutting of semiconductor wafers and which contains silicon-containing impurities. The process comprises changing the properties of the used coolant fluid so that the silicon-containing impurities may be filtered and separated from the coolant fluid to thereby yield a coolant fluid filtrate suitable for use in a wire-saw cutting operation. | 05-29-2014 |
20150060369 | Mobile Flowback and Produced Water Re-Use System and Method - A mobile water re-use system can include a chemical treatment apparatus, at least one weir tank in fluid communication with the chemical treatment apparatus, and two or more settling tanks in fluid communication with each other and at least one of the settling tanks in fluid communication with the weir tank. The weir tank can have a first end, a second end, an internal chamber, and a plurality of baffles that induce turbulent flow of fluid through the internal chamber. The settling tanks can provide, promote, facilitate, result in, and/or induce laminar flow of fluid through at least a portion of the internal chamber. Weir tanks, settling tanks, and method of treating flowback and produced water are also described. | 03-05-2015 |
20150083669 | REDUCTION OR REMOVAL OF SULFATES FROM WATER - Some waters have high sulfate contents, such as acid mine drainage (AMD), which makes them unsuitable for use in fracturing fluids and difficult to dispose. Such waters may be treated with a solution of barium chloride to react with the sulfate ion of the sulfates and precipitate the sulfates as barium sulfate. Not all of the sulfates needs to be removed for the reclaimed water to be useful in formulating a fracturing fluid. The by-product of the reaction is almost pure barium sulfate, which is an inert, commercially valuable material that may be used in drilling fluids, paint and other industries. | 03-26-2015 |
20150307376 | Method for Treating Waste Water Containing Fluorine Component - A method for removing the fluorine component from waste water which is produced during the manufacturing process of highly reactive polybutene and contains high concentration of fluorine component, is disclosed. The method comprises a step of adding to the waste water a treating agent selected from a group of Al compound, Ca compound and mixture thereof at temperature of 50 to 300° C. for reaction, whereby boron trifluoride neutralized salt is decomposed to form Al salt or Ca salt of fluorine component so that the fluorine component is removed in the form of the Al salt or the Ca salt of fluorine component. | 10-29-2015 |
20220135452 | METHOD OF MONITORING AND OPTIONALLY CONTROLLING REMOVAL OF MICROPLASTICS FROM MICROPLASTIC CONTAINING WATERS - The present invention relates to a method of monitoring and optionally controlling removal of microplastics from microplastic containing raw water, drinking water, storm water, water originating from melted snow, surface water, effluent of industrial wastewater treatment plants, effluent of municipal wastewater treatment plants, industrial process water, using at least one coagulant and/or polymer, wherein the number of microplastic particles of the microplastic containing water before and/or after addition of said at least one coagulant and/or polymer is determined by using an optical measurement measuring light scattering and fluorescence of particles in a predetermined volume of the microplastic containing water. | 05-05-2022 |