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| Number | Title | Issue Date |
| 8173020 | Method for removing contaminants from water using a membrane biofilm reactor Apparatus and methods for water treatment are described, particularly for the simultaneous removal of nitrate, perchlorate, and other organic contaminates from contaminated water using a membrane biofilm reactor (MBfR). ... | 05/08/2012 |
| 8173019 | Method for forming facultative-organism-adapted membrane bioreactor A method for forming a facultative-organism-adapted membrane bioreactor by: providing a membrane bioreactor having a membrane module, aerating intensively the membrane module at a lower part thereof and maintaining the scouring against the membrane module so that an... | 05/08/2012 |
| 8070949 | Micro diffusion of oxygen for treatment and dispersal of wastewater in a drain field Methods, systems and apparatuses are disclosed for improving the treatment of wastewater in a dispersal drainage trench by facilitating the direct aeration of wastewater passing through a drainage unit. ... | 12/06/2011 |
| 8052874 | Method using 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 mem... | 11/08/2011 |
| 7931807 | Method for removing contaminants from ground water Apparatus and methods for water treatment are described, particularly for the simultaneous removal of nitrate, perchlorate, and other organic contaminates from contaminated water using a membrane biofilm reactor (MBfR). ... | 04/26/2011 |
| 7922907 | Process for water treatment A method for removing contaminant from feedwater by forming a dispersion comprising bubbles of a treatment gas in a continuous phase comprising feedwater, wherein the bubbles have a mean diameter of less than about 5 μm and wherein the treatment gas is selected fro... | 04/12/2011 |
| 7879240 | Method and system for aerating wastewater for re-use A method and apparatus for aerating a liquid, particularly for aerating water in a wastewater treatment process, by: introducing the liquid into a primary pressurizable aeration tank; pumping liquid from the primary pressurizable aeration tank into a secondary press... | 02/01/2011 |
| 7846334 | Method for the treatment of ammonia-containing waste water A method for treating ammonium-containing waste water by means of a single sludge system in an SBR reactor, in which ammonium is converted to nitrite in a first reaction and ammonium and nitrite are converted into molecular nitrogen in a second reaction carried out ... | 12/07/2010 |
| 7763173 | Method for remediating solids in waste lifting stations A process removes or eliminates altogether accumulations of solid and semi-solid, water immiscible materials adhering to walls, and equipment, particularly near the high liquid mark, in tanks of waste liquid lift stations. Compressed gas is used to generate large bu... | 07/27/2010 |
| 7699986 | Method for activated sludge wastewater treatment with high dissolved oxygen levels An activated sludge wastewater treatment method is provided. The disclosed method includes: receiving a stream of wastewater into a mixed liquor in an uncovered activated sludge basin; introducing high purity oxygen to the mixed liquor in the activated sludge basin ... | 04/20/2010 |
| 7695623 | System and method for enhancing an activated sludge process A system for enhancing an activated sludge process that includes at least one aeration tank subsystem for receiving a flow a wastewater and for introducing dissolved oxygen to a population of microorganisms to promote growth of biological flocs in a mixed liquor def... | 04/13/2010 |
| 7695622 | System and method for eliminating sludge via ozonation A system and method for the treatment and reduction of sludge via ozonation in a wastewater treatment process is disclosed. The sludge treatment system comprises: a sludge ozonation reactor coupled to an activated sludge treatment basin and adapted to receive a liqu... | 04/13/2010 |
| 7691269 | Method and system for retrofitting an existing water treatment system A method and system for retrofitting an existing water treatment system having one or more biological reactor systems and one or more gravity clarifiers. To retrofit the existing water treatment system, the one or more gravity clarifiers of the existing water treatm... | 04/06/2010 |
| 7662288 | Water treatment method and water treatment system In a water treatment system, micro-nano bubbles are used in a production device and a detoxification device as one example of the upstream treatment devices which perform specified treatment with use of water. The micro-nano bubbles are used again in the waste water... | 02/16/2010 |
| 7655144 | Method for the treatment of wastewater A wastewater treatment system for treating wastewater by processes which include aeration. The system includes an influent conduit for delivery of wastewater to be processed and a treatment tank for processing of the wastewater. Also included is an air conduit for p... | 02/02/2010 |
| 7655143 | Carbon dioxide stimulation of nitrification in activated sludge reactors A method of stimulating nitrification at low SRT by elevating pCO2 during aeration is disclosed. The improvement on solids settling performance when elevated pCO2 was supplied after 2 hours within the React cycle is consistent with the previous... | 02/02/2010 |
| 7651615 | Process for reducing waste volume The present disclosure is generally directed to a process for decreasing waste material. The process includes loading organic material into a vessel, supplying ozone and water into the vessel, separating the organic material into solid material and liquid material, ... | 01/26/2010 |
| 7648634 | Method for wastewater treatment A system and method for treating wastewater includes a treatment container for receiving and treating wastewater and a mixing/aeration system disposed in the treatment container. Wastewater is pumped under pressure from the treatment container through a solids/liqui... | 01/19/2010 |
| 7638055 | Sludge quality The invention provides the use of an effective amount of a non-oxidizing water-soluble biocide in the improvement of sludge quality by reducing the sludge tendency towards bulking, wherein the biocide comprises an alkyl-substituted phosphonium compound, an alkyl-sub... | 12/29/2009 |
| 7628919 | Method for treating water contaminated with methanol and boron Systems and methods have been developed for treating the waste water contaminated with methanol and boron in addition to other contaminants. The systems and methods allow specifically for the removal of the methanol and boron without the addition of significant chem... | 12/08/2009 |
| 7618537 | Membrane biofilm reactor method for reducing the concentration of oxidized contaminants in ground water Apparatus and methods for water treatment are described, particularly for the simultaneous removal of nitrate, perchlorate, and other organic contaminates from contaminated water using a membrane biofilm reactor (MBfR). ... | 11/17/2009 |
| 7585414 | Water treatment by activated sludge The invention relates to a method of treating water with activated sludge containing micro-organisms. The method comprises the steps of: preparing an environmentally adapted biomass mixture by adapting the activated sludge to a quantity of water having given charact... | 09/08/2009 |
| 7563374 | Continuous multistage thermophilic aerobic and aerobic-anaerobic sludge treatment process A continuous flow multistage aerobic wastewater sludge treatment system and process comprising at least two stages connected in series, each stage comprising one or more covered tanks, tank segments or compartments, each having an enclosed separate gas headspace, wh... | 07/21/2009 |
| 7560027 | Method for treating wastewater and sludge A method and an apparatus for treating organic wastewater and sludge which remarkably reduce the generated amount of sludge at a much lower running cost, and which reduce the size and the capacity of the solubilization tank. The method and apparatus for treating slu... | 07/14/2009 |
| 7527736 | Method for generating fracturing water Systems and methods have been developed for reclaiming water contaminated with the expected range of contaminants typically associated with produced water in order to produce a treated water having a quality adequate for reuse as a fracturing water. The system inclu... | 05/05/2009 |
| 7517454 | Method for treating wastewater containing active sludge A method includes: disposing a filter into a body of wastewater containing active sludge, the filter including a supporting member having an outlet, and a filter media enclosing the supporting member and supported by the supporting member so as to have a predetermin... | 04/14/2009 |
| 7510656 | 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... | 03/31/2009 |
| 7497949 | System and method for oxygenating an aerobic sludge digester A system and method for oxygenating an aerobic sludge digester is provided. The disclosed embodiments include an aerobic sludge digester tank or vessel having a mechanically agitated contactor disposed therein, an oxygen injection subsystem adapted to inject oxygen ... | 03/03/2009 |
| 7481935 | Waste water treatment process The present invention describes improved methods and systems for treating waste water and solid waste, which may include the addition of catholyte and anolyte. The methods and systems of the present invention may be used to treat waste water and solid waste from ani... | 01/27/2009 |
| 7468135 | Portable tank wastewater treatment system and method A portable wastewater treatment system comprising a wastewater holding tank having an interior adapted to hold wastewater, and a generator positioned to provide ozone, oxygen, or a combination of the two to the interior of the holding tank. In one embodiment, the ho... | 12/23/2008 |
| 7459083 | Method for controlling fouling of a membrane filter A membrane bioreactor system includes one or more biological reactors and one or more membrane tanks with each membrane tank having one or more membrane filters. To control membrane fouling, various process control variables are employed. First, the membrane filters... | 12/02/2008 |
| 7455775 | Water treatment method and apparatus It is an object of the invention to provide an effective technique for detecting the quality of water with high accuracy. A representative water treatment apparatus includes an aerobic treatment region that treats water aerobically, a downstream region in which the ... | 11/25/2008 |
| 7455776 | Method for mixing high viscous liquids with gas A system and method for mixing high viscous liquids with gas is provided. The disclosed embodiments include a reactor or mixing vessel having a draft tube disposed therein, a gas injection subsystem adapted to inject gas into the reactor or mixing vessel proximate t... | 11/25/2008 |
| 7442304 | In-situ ballast water treatment method A method and system for ballast water treatment are provided. Living organisms are added into a vessel's ballast water tank (e.g., via an existing vent) to consume (i) oxygen dissolved in ballast water contained in the ballast water tank, and (ii) food sources for s... | 10/28/2008 |
| 7442307 | Method and apparatus for the biological activated sludge treatment of wastewater The equipment has a main reaction (I) and an anterior reactor (II), as well as facilities for feeding in untreated sewage, removing cleaned water and sludge and aerating the wastewater entered into the main reactor, and a mixer (2) situated in the anterior re... | 10/28/2008 |
| 7438813 | Ammonia oxidation and pipe denitrification In a biological wastewater treatment system, the addition of an intermittently aerated second bioreactor to accomplish ammonium oxidation to predominately nitrite and then to achieve denitrification by introducing the effluent, containing nitrite, from the second bi... | 10/21/2008 |
| 7431840 | Denitrification process A process and system for denitrification of wastewater. The process includes the steps of measuring an influent flow rate, measuring influent concentrations of nitrates, nitrites, and dissolved oxygen in the wastewater, and using the influent concentrations to deter... | 10/07/2008 |
| 7431839 | Low oxygen biologically mediated nutrient removal The present invention is directed to a substantially odorless biologically mediated treatment process for solid and liquid organic wastes. The present invention also provides for a novel nutrient rich humus material produced from the biologically mediated treatment ... | 10/07/2008 |
| 7419595 | Multiple barrier biological treatment process The inventions separate the activated sludge, biochemical reaction stages of the batch treatment process of a sequencing batch reactor from the clarification and sedimentation stages by separating the locations where each process takes place. The separation may be a... | 09/02/2008 |
| 7419594 | Apparatus and method for controlling biomass growth in suspended carrier bioreactor A bioreactor configured to contain an aqueous suspension of biomass and media is provided. The invention includes a lift tube disposed within the vessel, the lift tube having an inlet disposed at the bottom region of the vessel and an outlet disposed at the top regi... | 09/02/2008 |
