Class / Patent application number | Description | Number of patent applications / Date published |
210726000 | Sequential introduction | 24 |
20090065443 | WATER TREATMENT METHOD - A water treatment method according to the present invention comprises adding an amphoteric polymer flocculant to polluted water to flocculate suspended solids so that the polluted water becomes treated water, and filtering the treated water. An inorganic flocculent can be added to the treated water after flocculation treatment before filtering the treated water. | 03-12-2009 |
20100059452 | METHOD OF PURIFYING BLOCK COPOLYMERS - The invention relates to block polymers, for example, arborescent copolymer compounds, and to methods of making and purifying such compounds. In one embodiment, the invention relates to arborescent polymer compounds that contain one or more styrene polymeric blocks in combination with one or more isobutylene polymeric blocks. In another embodiment, the invention relates to methods for purifying arborescent polymer compounds that contain at least one styrene polymeric block in combination with at least one isobutylene polymeric block. | 03-11-2010 |
20100170855 | MODIFICATION OF PRECIPITATE MORPHOLOGY AND SETTLING CHARACTERISTICS IN ACID CONDITIONS - The current invention relates to the modification of precipitate formed from an acidic slurry or solution resulting in decreased settling times and final solids bed volumes. The current invention uses an aqueous synthetic mixture comprising a phosphate, phosphonate, anionic polymer, anionic/cationic polymer blend or combinations thereof in the slurry and/or solution to improve clarification of the process stream. The claimed invention has a significant effect on precipitate morphology consequently improving settling characteristics and allowing for superior solid-liquid separation and process throughput. | 07-08-2010 |
20100187181 | Method for Dispersing and Aggregating Components of Mineral Slurries - The disclosure relates generally to the use of zeolite to assist in dispersion of components in aqueous mineral slurries to release and separate individual components of the slurry, which may then be recovered from the slurry and, in particular, to the use of zeolite in the recovery of bitumen from an oil sands slurry, water recovery from the slurry, and the subsequent consolidation of residual mineral solids. | 07-29-2010 |
20100243576 | DEWATERING SYSTEM - Systems and methods for dewatering drilling fluid including a feeder, an aging tank, a polyductor configured between the feeder and the aging tank and a flocculant solution pump fluidly connected to the aging tank. Further, the system includes a portable skid to house the feeder, the aging tank, the polyductor, and the flocculant solution pump. In certain embodiments, the polyductor is configured to mix a liquid with a dry flocculant from the feeder, and disperse a resultant flocculant solution in the aging tank, the aging tank is configured to receive the flocculant solution, and the flocculant solution pump is configured to remove the flocculant solution from the aging tank. | 09-30-2010 |
20110094970 | SYSTEM, METHODS, PROCESSES AND APPARATUS FOR REMOVING FINELY DISPERSED PARTICULATE MATTER FROM A FLUID STREAM - Disclosed herein are systems and methods for removing fine particulate matter from a fluid, comprising a separator that separates an inflow fluid stream into an overflow fluid path and an underflow fluid path, where the underflow fluid path is treated with a tethering material that attaches to the coarse particulate matter to form tether-bearing anchor particles and where the overflow fluid path is treated with an activating material so that the activating material interacts with the fine particulate matter to form activated particles. After these treatments, the underflow fluid path containing the tether-bearing anchor particles is comingled with the overflow fluid path containing the activated particles, so that a removable complex is produced that can be removed in a settling facility, thereby removing the fine particulate matter from the fluid. The systems and methods are particularly advantageous for removing particulate matter from a fluid waste stream following mining or ore processing operations, such as oil sands mining or processing. | 04-28-2011 |
20110233139 | Treatment of Water - A process for treating impure water includes adding magnesium hydroxide and/or ammonium hydroxide to the water. This neutralizes the impure water and reacts with dissolved metals in the water. The metals are precipitated as metal hydroxides/oxides, which are removed from the water. Thereafter barium hydroxide is added to the water. The barium hydroxide reacts with dissolved sulphates to produce barium sulphate and, when magnesium hydroxide is used, with dissolved magnesium, to produce magnesium hydroxide. Barium sulphate and, when present, magnesium hydroxide are removed from the water. When ammonium hydroxide is used, ammonia is stripped from the water. Carbon dioxide is then added to the water. The carbon dioxide reacts with dissolved calcium in the water. The calcium is precipitated as calcium carbonate, which is removed from the water. | 09-29-2011 |
20120061327 | 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. | 03-15-2012 |
20120205318 | PRETREATMENT METHOD AND TREATMENT FACILITY FOR WASTEWATER THAT CONTAINS FLUORINE AND SILICON - Provided is a wastewater treatment technology (in particular, pretreatment technology) that, in comparison to existing technologies, can reduce the quantity of sludge generated as a result of processing wastewater that contains fluorine and silicon. | 08-16-2012 |
20130168325 | APPARATUS FOR PHOSPHOROUS REMOVAL FROM WASTE WATER - Provided are an apparatus for removing phosphorous from wastewater including: a first coagulation sedimentation unit including a first rapid mixing tank, a first flocculation tank and a first sedimentation tank; and a second coagulation sedimentation unit including a second rapid mixing tank, a second flocculation tank and a second sedimentation tank, and a method for removing phosphorous using the same. The first rapid mixing tank stirs wastewater and an inorganic coagulant with low basicity at high speed and the second rapid mixing tank stirs the treated water supplied from the first sedimentation tank and an inorganic coagulant with high basicity at high speed. As a result, removal of phosphorous from the wastewater is maximized and coagulation and sedimentation may be optimized through control of metal content in the inorganic coagulants added to the first rapid mixing tank and the second rapid mixing tank. | 07-04-2013 |
20130193078 | SYSTEMS AND METHODS FOR REMOVING FINELY DISPERSED PARTICULATE MATTER FROM A FLUID STREAM - Disclosed herein are systems for removing particulate matter from a fluid, comprising a particle functionalized by attachment of at least one activating group or amine functional group, wherein the modified particle complexes with the particulate matter within the fluid to form a removable complex therein. The particulate matter has preferably been contacted, complexed or reacted with a tethering agent. The system is particularly advantageous to removing particulate matter from a fluid waste stream following mining or ore processing operations. | 08-01-2013 |
20140166587 | METHODS FOR REMOVING FINELY DISPERSED PARTICULATE MATTER FROM A FLUID STREAM - Disclosed herein are systems for removing particulate matter from a fluid, comprising a particle functionalized by attachment of at least one activating group or amine functional group, wherein the modified particle complexes with the particulate matter within the fluid to form a removable complex therein. The particulate matter has preferably been contacted, complexed or reacted with a tethering agent. The system is particularly advantageous to removing particulate matter from a tailing solution. | 06-19-2014 |
20140190898 | Cactus Mucilage and Ferric Ions for the Removal of Arsenate (As(V)) from Water - Potable drinking water is plagued with widespread arsenic contamination, particularly in developing communities. Ferric ions were introduced to interact with arsenate based on the strong affinity of arsenate for ferric hydroxides, followed by mucilage addition. The mucilage coagulated and flocculated the ferric-arsenate complex and formed visible flocs that settled at the bottom of the tubes. The system showed 75-96% arsenate removal in 1 hour, while longer retention times showed 100% removal. The role of the mucilage was demonstrated by untreated solutions showing no concentration difference and remaining stable for more than 15 days. This mucilage-based technology has the potential to be a relatively inexpensive, environmentally sustainable alternative to synthetic polymer flocculants for removing arsenic from drinking water. | 07-10-2014 |
20140238942 | PROCESS OF PURIFYING A RESIDUE WITH CALCIUM IONS - The present invention relates to a process of purifying a residue from an industrial process using calcium ions to obtain a purified brine, comprising: (a) mixing the residue comprising sulfate salts from the industrial process with calcium salts; (b) separating insoluble species and/or precipitates from the suspension from (a); (c) adding one or more selected from C0 | 08-28-2014 |
210727000 | Including organic agent | 10 |
20080223792 | Apparatus and Process for the Incorporation of a Dry Treatment Product Into a Liquid Waste - A flow-through mixing apparatus for incorporating a dry treatment product into a waste stream. The apparatus comprises a pump for directing a liquid waste from a storage pit/tank, a mixer that receives the liquid waste from the pump, and a valve downstream of the mixer for either recirculating the liquid waste back to the storage pit/tank via a recirculation conduit, or directing the liquid waste to a discharge conduit. The mixer comprising a jet nozzle, a venturi tube and a high-shear assembly. The recirculation conduit establishes a calibration loop for determining the appropriate treatment regimen based on the characteristics of the waste liquid. The recirculation conduit also permits the homogenization of the pit/tank contents prior to addition of the dry treatment product. The dry treatment product introduced in the region of the mixer is subjected high shear forces, thereby incorporating the dry treatment product into the waste stream with increased dispersion and reduced agglomeration. | 09-18-2008 |
20100059453 | SYSTEM AND METHOD FOR DE-WATERING WASTE DRILLING FLUIDS - Systems and methods for de-watering waste drilling fluid. In some embodiments, the de-watering system includes a drilling fluid reclamation system receiving the waste drilling fluid from a wellbore and removing at least some solids from the waste drilling fluid, a manifold combining the waste drilling fluid from the drilling fluid reclamation system and organic polymers, whereby an aggregated mixture of solids in the waste drilling fluid and water are formed, and a centrifuge receiving the aggregated mixture and separating the solids from the water in the aggregated mixture, whereby solid drilling fluid waste and substantially colloidal-free water are formed. | 03-11-2010 |
20110006013 | METHOD FOR THE REMOVAL OF SUBMICRON PARTICULATES FROM CHLORINATED WATER BY SEQUENTIALLY ADDING A CATIONIC POLYMER FOLLOWED BY ADDING AN ANIONIC POLYMER - A method for removing submicron colloidal particulates, such as hydrocarbons, from water. The method includes first adding a soluble, cationic polymer, such as chitosan, a salt, or solution of chitosan to water containing the submicron particulates and a halogenating agent, followed by adding a soluble, anionic polymer or anionic salt to the water. The resulting flocs are filtered to remove the submicron particulates. | 01-13-2011 |
20130075341 | METHOD FOR CLARIFYING INDUSTRIAL WASTEWATER - Methods are described for removing contaminates from aqueous industrial wastewater process streams, specifically industrial laundries to yield a less contaminated aqueous effluent for discharge to a sewer and reduce the sludge generated therefrom. A premixed medium/high molecular weight and medium/high charged cationic coagulant solution polymer and an inorganic aluminum species is added to the wastewater, and after at least a two second delay, a high molecular weight highly charged anionic flocculent is injected into the wastewater which reduces sludge generation, while maintaining or exceeding effluent quality. Also, no coagulant, flocculent or sludge aids are needed to attain the results and the sludge can be dewatered in a plate and frame press. | 03-28-2013 |
20130112627 | CHEMICAL TREATMENT TO IMPROVE RED MUD SEPARATION AND WASHING IN THE BAYER PROCESS - The invention provides methods and compositions for improving the rheology of red mud removed from Bayer Process liquor. The method includes adding a flocculant and a cross-linked polysaccharide to the liquor. This combination separates the red mud from the liquor but also prevents the red mud from becoming too thick. By preventing excessive thickness, the method allows for the formation of extremely dense amounts of red mud even in primary settlers because the dense red mud can still flow. As a result a user can simultaneously enjoy both easy handling of red mud and also high recovery rates of valuable alumina and caustic from the red mud. | 05-09-2013 |
20130153510 | METHOD AND SYSTEM FOR TREATING AQUEOUS STREAMS - The invention relates to a method and system for treating an aqueous stream having a first flow rate and containing solid matter exhibiting first settling properties, the method comprising adding a modifying agent to the aqueous stream at an addition rate sufficient to change the first settling properties of the aqueous stream to obtain a modified aqueous stream having solid matter exhibiting second settling properties different from the first settling properties; taking batchwise samples of the modified aqueous stream to a settling vessel having a volume; determining a settling property of the solid matter of the samples in the settling vessel; and conducting the modified aqueous stream to a separation unit in which solid matter is separated from the modified aqueous stream. The invention provides a convenient way of monitoring and/or controlling aqueous streams conducted for example to purification processes. | 06-20-2013 |
20140319069 | METHOD FOR THE REMOVAL OF SUBMICRON PARTICULATES FROM CHLORINATED WATER BY SEQUENTIALLY ADDING A CATIONIC POLYMER FOLLOWED BY ADDING AN ANIONIC POLYMER - A method for removing submicron colloidal particulates, such as hydrocarbons, from water. The method includes first adding a soluble, cationic polymer, such as chitosan, a salt, or solution of chitosan to water containing the submicron particulates and a halogenating agent, followed by adding a soluble, anionic polymer or anionic salt to the water. The resulting flocs are filtered to remove the submicron particulates. | 10-30-2014 |
20150034562 | METHOD FOR DEWATERING SUSPENSIONS OF SOLID PARTICLES IN WATER - A method for dewatering dispersions of suspended solids by flocculation, using a polymeric flocculant, includes the steps of sequentially adding to the dispersions: at least one water soluble, anionic linear polymer having a molecular weight of at least 1×10 | 02-05-2015 |
20150034563 | ENHANCEMENT OF WASTEWATER SLUDGE DEWATERING USING SOY FLOUR OR SOY PROTEIN - Dewatering agents and methods of dewatering wastewater slurries are provided. Also disclosed are methods for improving the separation of solids from water. The water may be produced water, raw water, or wastewater, for example. The dewatering agents can be in solutions and the dewatering agent solutions may include flocculants, soy based components, and surfactants. The soy based components can include, for example, soy flour and soy protein. | 02-05-2015 |
20150053621 | METHOD FOR TREATING WATER AND FLOCCULANT FOR ORGANIC SUBSTANCES - Provided are a method for treating water and a flocculant used in the method. The method includes the steps of adding a first polymer compound formed by multiply binding a first repeating unit into water to be treated, and adding a second polymer compound formed by multiply binding a second repeating unit into the water. The first repeating unit includes a first linked main chain which constructs a main chain via repeatedly bound one another, and an adsorption site directly or indirectly bound to the first linked main chain so as to adsorb organic compounds contained in the water to be treated. The second repeating unit has a similar structure to the first repeating unit except that the number of carbon atoms in the second linked main chain is different from that in the first linked main chain. The flocculant includes the first and second polymer compounds. | 02-26-2015 |