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| Number | Title | Issue Date |
| 7442353 | Heat recirculating cooler for fluid stream pollutant removal A process by which heat is removed from a reactant fluid to reach the operating temperature of a known pollutant removal method and said heat is recirculated to raise the temperature of the product fluid. The process can be utilized whenever an intermediate step rea... | 10/28/2008 |
| 7435349 | System for treating wastewater containing organic compounds A system for treating wastewater containing organic compounds is provided, comprising an anaerobic bioreactor, an aerobic bioreactor disposed rearwardly of the anaerobic bioreactor, and a membrane separation reactor disposed rearwardly of the aerobic bioreactor. The... | 10/14/2008 |
| 7416669 | Biological nutrient removal process and process control system for same The present disclosure describes an improved system and method for treating wastewater or other liquid. Furthermore, the present disclosure provides a control program for operating the system and method. In one embodiment, the treatment process utilizes a biological... | 08/26/2008 |
| 7410589 | Hog manure treatment method The invention relates to a method of treating manure such that odor from the manure is significantly reduced or eliminated and producing therefrom recyclable water, value-added biosolids and ammonia. Specifically, the manure is combined with lime at high pH. The mat... | 08/12/2008 |
| 7410584 | Methods and apparatus for treating wastewater employing a high rate clarifier and a membrane Methods and apparatus for treating wastewater are described, one method embodiment including the steps of flowing a stream comprising mixed liquor suspended solids and fixed growth solids to a high rate clarification stage, forming a clarifier effluent, a first wast... | 08/12/2008 |
| 7407580 | System and method for treating carbon, nitrogen, phosphorous containing wastewater The present invention relates to a wastewater treating system and method for removing pollutants of carbon, nitrogen, phosphorous, comprising: a first reactor contains methanogenic bacteria, PAO and denitrifying bacteria for eliminating the organic carbon in denitri... | 08/05/2008 |
| 7407579 | Method and apparatus for treating ammonium-containing liquid The method for treating an ammonium-containing liquid which biologically denitrifies ammonium contained in the ammonium-containing liquid in an anaerobic atmosphere, the method comprises the steps of: bringing the ammonium-containing liquid into contact with anaerob... | 08/05/2008 |
| 7396466 | Method and system for filtration of wastewater A system (10) comprising multiple units (40a-40h) and method for filtration of wastewater (20) is disclosed. Simultaneous denitrification of a single filter unit and normal filtration of the remaining filter units is provide... | 07/08/2008 |
| 7393452 | Compositions and methods for the treatment of wastewater and other waste A method for processing environmental samples to remove or otherwise reduce the level of certain chemical species. In a preferred embodiment, the present invention contemplates a process for reducing the level of inorganic and/or organic chemical species in wastewat... | 07/01/2008 |
| 7390400 | Denitrification reactor with a fixed culture A denitrification reactor with a culture fixed to an organized plastic-type support is combined with an installation for the nitrification and elimination of the carbon-based pollution The reactor is supplied with a mixture of the raw effluent to be treated and of t... | 06/24/2008 |
| 7384553 | Method for operating anaerobic ammonium oxidation vessel and anaerobic ammonium oxidation equipment A method for operating an anaerobic ammonium oxidation vessel in anaerobic ammonium oxidation in which ammonium and nitrite in water to be treated are simultaneously denitrified by anaerobic ammonium oxidizing bacteria, the method comprising the steps of: wit... | 06/10/2008 |
| 7378021 | Tidal vertical flow wastewater treatment system and method A wastewater treatment system includes a tidal, sequential vertical flow marsh cell system having at least three marsh cells in serial forward fluid communication. Incoming wastewater to be treated is channeled to at least the first and a second marsh cell, and a po... | 05/27/2008 |
| 7371328 | Method for treating hog and animal waste An animal treatment method comprises flushing the animal waste from a barn to a holding tank where the waste is mixed with an alkaline solution to kill pathogens. After neutralization, the solution is separated into solids and liquids. The liquid is treated and recy... | 05/13/2008 |
| 7347940 | Nitrogen removal system and method for wastewater treatment lagoons A wastewater treatment process integrates a tidal nitration system with a wastewater treatment lagoon. Raw effluent enters a lagoon having a persistent anoxic or anaerobic state and a long residence time to permit suspended solids to settle to the bottom, forming a ... | 03/25/2008 |
| 7326343 | Treatment of wastewater containing phosphorous and nitrogen A method and process for the treatment of wastewater containing phosphorous and nitrogen. The wastewater is first anaerobically treated to produce an anaerobic effluent from which insoluble organic carbon is separated to form a sludge rich in organic carbon that is ... | 02/05/2008 |
| 7314562 | Floating wetland structures for use in water remediation Floating wetland structures of the invention are generally formed from one or more floatation panels made of a plurality of polymeric foam particles arranged in a piled laminate structure. The foam particles are arranged within the piled laminate structure so as to ... | 01/01/2008 |
| 7314563 | Membrane coupled activated sludge method and apparatus operating anoxic/anaerobic process alternately for removal of nitrogen and phosphorous Disclosed are a membrane coupled activated sludge method and apparatus operating anoxic/anaerobic processes alternately for removal of nitrogen and phosporus, wherein nitrogen and phosphorous together with organics in the sewage, wastewater, filthy water etc. can be... | 01/01/2008 |
| 7309434 | Apparatus and method for wastewater treatment A method for treating wastewater. The method comprises: providing a first dose of air to aerate a medium bed; supplying a dose of wastewater to the aerated medium bed; allowing nitrification of the wastewater to occur; allowing denitrification to occur; and providin... | 12/18/2007 |
| 7309433 | Fluid bed expansion and fluidisation Method and apparatus (8) in which a biomass is carried on a substrate which is fluidised. The fluidised substrate has below it a lazer of distributor particles through which the fluidising medium passes prior to contact with the fluidised substrate and biomas... | 12/18/2007 |
| 7306733 | Autotrophic denitrification chamber and calcium reactor The present invention describes novel biological systems for efficiently reducing nitrate levels and otherwise conditioning aquarium water and water in similar environments. ... | 12/11/2007 |
| 7300570 | Apparatus and method for treating wastewater using contact media Disclosed is an apparatus and method for treating wastewater using contact media. The water treatment apparatus includes a biofilm reactor (13) including first and second biofilm contact layers (2 and 3) alternately arranged in a hopper, a preci... | 11/27/2007 |
| 7297275 | Biomembrane filtration apparatus and method The present invention has an object to provide a biomembrane filtration apparatus which can treat a nitrate nitrogen and nitrite nitrogen in an anaerobic state to stably remove them together with SS with efficiency and, simultaneously, can biologically remove the re... | 11/20/2007 |
| 7279100 | Methods and apparatus for treating wastewater employing a high rate clarifier and a membrane Methods and apparatus for treating wastewater are described, one method embodiment including the steps of flowing a mixed liquor suspended solids to a high rate clarification stage, forming a clarifier effluent, a first waste activated sludge stream, and a return wa... | 10/09/2007 |
| 7276164 | Nitrate removal in a purge stream using constructed wetlands The present invention comprises a system and methodology for denitrification using constructed wetlands. The constructed wetlands of the present invention can be effectively applied as a wastewater point source treatment technology to any high total dissolved solids... | 10/02/2007 |
| 7261811 | Liquid-solid circulating fluidized bed waste water treatment system for simultaneous carbon, nitrogen and phosphorus removal Biological nutrient removal (BNR) in municipal wastewater treatment to remove carbonaceous substrates, nutrients and phosphorus, has recently become increasingly popular worldwide due to increasingly stringent regulations. Biological fluidized bed (BFB) technology, ... | 08/28/2007 |
| 7258790 | Controlled eutrophication system and process A controlled eutrophication system and process are disclosed. The system includes the combination of a partitioned aquaculture system in conjunction with an anaerobic digester. Wastewater containing pollutants, such as nitrogen and phosphorus, are fed to the partiti... | 08/21/2007 |
| 7235178 | Process and assembly for the treatment of waste water on ships Process for treating waste water on ships in which the waste water is pretreated by surface filtration, the pretreated waste water being collected in a first tank acting as a mixing tank and optionally enriched with oxygen. The waste water from the first tank is con... | 06/26/2007 |
| 7214317 | Tidal vertical flow wastewater treatment system and method A wastewater treatment system includes a tidal, sequential vertical flow marsh cell system having at least three marsh cells in serial forward fluid communication. Incoming wastewater to be treated is channeled to at least the first and a second marsh cell, and a po... | 05/08/2007 |
| 7208090 | Wastewater treatment control Wastewater treatment controls that maintain the ORP of a mixed liquor at a relatively stable value during a wastewater treatment process such as an aerated-anoxic wastewater treatment process. The wastewater treatment control may compare a setpoint value of ORP and ... | 04/24/2007 |
| 7195712 | Wastewater treatment apparatus and method for removing nitrogen and phosphorus Provided is a wastewater treatment apparatus for removing nitrogen and phosphorus having an anaerobic tank, an anoxic tank, an aerobic tank and a clarifier, wherein the aerobic tank includes has a baffle installed at one side thereof to form a dissolved oxygen reduc... | 03/27/2007 |
| 7182872 | Struvite crystallization The present invention provides a method and apparatus for removing phosphorus from phosphorus containing waste. In one embodiment, the method is preferably carried out by contacting the phosphorus containing waste with a non-cellular membrane and precipitating phosp... | 02/27/2007 |
| 7172701 | Water treatment method using an inorganic powder reagent with high specific surface area including a step of recycling said reagent A method of treating water including mixing the water with an inorganic powder reagent for reducing the content of organic matter. The water, after being mixed with the inorganic powder reagent, is subjected to a membrane separation step that produces blow off produ... | 02/06/2007 |
| 7172699 | Energy efficient wastewater treatment for nitrogen and phosphorus removal In a wastewater treatment plant, the liquid side of the plant has preferably four stages for nitrification and/or denitrification, prior to further treatment such as a clarifier. Energy requirements are reduced by reducing aeration requirements. Four or more tanks/z... | 02/06/2007 |
| 7166220 | Systems and methods for organic wastewater treatment A system and method for organic wastewater treatment through denitrification and nitrification processes. The system for treating organic wastewater includes a multistage treatment tank having at least two stages in series. Each stage has a denitrification tank and ... | 01/23/2007 |
| 7160456 | Method and equipment for processing organic material A method for processing organic material, in which method bioconversion is performed on the organic material in at least one first reactor, the biogas formed in the bioconversion is treated with ammonia in at least one second reactor and buffer solution produced in ... | 01/09/2007 |
| 7156998 | Phased activated sludge system The inventions describe a phased activated sludge treatment system that incorporates elements of batch treatment technology into a flow-through treatment process. Control of mixing and aeration systems are independent to facilitate the operation of the main reactor ... | 01/02/2007 |
| 7153428 | Flooded densified leachbed anaerobic digestion The present invention provides improved systems and processes for performing sequential batch anaerobic composting (SEBAC) on high solids content wastes. In particular, the present invention provides improved flooded SEBAC systems that function more efficiently (i.e... | 12/26/2006 |
| 7153427 | Nitrogen recovery system and method using heated air as stripping gas A process for the recovery of nitrogen from anaerobically digested liquid waste and for the collection of the nitrogen as nitrate compounds that can be used to produce fertilizer and compost, includes stripping ammonia from anaerobically digested liquid waste, and c... | 12/26/2006 |
| 7147778 | Method and system for nitrifying and denitrifying wastewater A wastewater treatment system is provided that includes first and second reactors, each operative to nitrify or denitrify wastewater contained therein. Downstream from the first and second reactors is a membrane reactor that operates under aerobic conditions and inc... | 12/12/2006 |
| 7144509 | Process and apparatus for waste water treatment Method and apparatus for treating contaminants in water under anaerobic conditions is disclosed. The method includes adding to contaminated water a composition including an aqueous mixture of at least one carbohydrate and at least one alcohol and/or bacteriastat. Th... | 12/05/2006 |
