| Patents for C02F 3 - Biological treatment of water, waste water, or sewage (46,453) |
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| 04/21/2004 | CN1490397A Preservation of living bacteria in biological products by corn starch |
| 04/21/2004 | CN1490260A ICAST sewage treating method for recovering and use in housing estate and self-controlled monitor |
| 04/21/2004 | CN1490259A Sewage treating method and apparatus by dynamic biologic membrane and activating mud |
| 04/21/2004 | CN1490258A Method for inhibiting pollutant releasement in water body |
| 04/21/2004 | CN1490253A Waste water treating method for methyl ethyl ketone production |
| 04/21/2004 | CN1146655C Sulphur reducing bacterium and its use in biological desulphurisation processes |
| 04/21/2004 | CA2445642A1 Organic waste treatment apparatus and method for recycling as a liquid fertilizer |
| 04/20/2004 | US6723245 Method of using water soluble cationic polymers in membrane biological reactors |
| 04/20/2004 | US6723244 Method and apparatus to achieve nitrification at low solids retention times |
| 04/20/2004 | US6723243 Periphyton filtration pre- and post-treatment system and method |
| 04/20/2004 | US6722314 Method for improving conditions in closed circuit fish farming |
| 04/15/2004 | WO2004031084A1 Method of removing nitrate nitrogen and device used for the method |
| 04/15/2004 | WO2003106355A3 Reactor for thermophilic biological sludge degradation |
| 04/15/2004 | WO2002062710A8 Filter equipment and process for the treatment of waste water containing inorganic, organic pollution and/or pathogens |
| 04/15/2004 | US20040072331 Biodegrading organic waste using microorganismal decomposition, dehydration and hydration; bioremediation and pollution control |
| 04/14/2004 | EP1408009A1 Reactor with two gas separators and method for the anaerobic treatment of liquids |
| 04/14/2004 | EP1408008A1 Reactor with a three-phase separating device and method for separating a three-phase mixture |
| 04/14/2004 | EP1406845A2 The method and system of generating methane and electrical energy and thermal |
| 04/14/2004 | EP1406844A1 Waste water reservoir, especially activated sludge reservoir, and method for the operation thereof |
| 04/14/2004 | EP1406488A2 Denitrification of aquarium water |
| 04/14/2004 | EP1119522B1 Cyclic aeration system for submerged membrane modules |
| 04/14/2004 | EP1023220A4 Method and apparatus for aeration using flexible blade impeller |
| 04/14/2004 | CN2611360Y 3-D net shaped cellular filler |
| 04/14/2004 | CN2611359Y Combined two-way stream aerating biological filter chamber unit |
| 04/14/2004 | CN2611020Y Hollow fiber and pressure type bio-reaction membrane assembly |
| 04/14/2004 | CN1488589A Mud-scraping suction dredge and solid-liquid separating process thereof |
| 04/14/2004 | CN1488584A Method for treaing uaste water containing aminopolycanboxylic acid |
| 04/13/2004 | US6719903 Autothermal aerobic process for treating biosolids where the oxygen/reduction potential is controlled by adjusting amount of shear generated through jet aeration devices and/ or adjusting the amount of oxygen-contouring gas provided |
| 04/13/2004 | US6719902 Fe(o)-based bioremediation of aquifers contaminated with mixed wastes |
| 04/13/2004 | US6719897 Fluid treatment apparatus |
| 04/08/2004 | WO2004028986A2 Membrane bioreactor waste water treatment method |
| 04/08/2004 | WO2004028983A1 A method of processing organic wastewater |
| 04/08/2004 | WO2004028982A1 A method for treating wastewater |
| 04/08/2004 | WO2004028981A1 Treatment of waste activated sludge |
| 04/08/2004 | WO2004028980A1 Method and device for reducing sludge from biological wastewater treatment stations |
| 04/08/2004 | WO2004028979A1 Method and device for reducing production of wastewater treatment station sludge with fixed biological cultures |
| 04/08/2004 | WO2004028974A2 Controlling wastewater treatment processes |
| 04/08/2004 | WO2004028246A1 Oxygen supply water-cooling device, filtering device, and filtering function-equipped water cooling device using them |
| 04/08/2004 | WO2004014809A3 Method and facility for treatment of sludge derived from biological water purification facilities |
| 04/08/2004 | WO2004005197A3 Effluent treatment combining solid/liquid separation and pulsed electric fields |
| 04/08/2004 | WO2003070873A3 Cultivation method for micro-organisms and bioreactor |
| 04/08/2004 | US20040065611 Waste treatment process |
| 04/08/2004 | US20040065610 Fertilizer; soil conditioning agent; contacting using worms, bacteria culture and moisture agent |
| 04/08/2004 | US20040065609 Purification of sea water; accumulation of impurities; filtration |
| 04/08/2004 | DE4408132B4 Hydratisierter körniger Träger für eine Vorrichtung zur biologischen Behandlung und Verfahren zur Herstellung desselben Of the same hydrated granular support for a biological treatment device and methods for making |
| 04/08/2004 | DE10245466A1 Reactor for cleaning municipal and industrial sewage, containing a biomass, has a concentric pipe structure as a twin-jet for the sewage and a gas to give an aerobic action |
| 04/08/2004 | DE10245408A1 Reactor for separating and removing organic compounds from sewage/waste water, uses chemical and biological reactions together with a catalyst reaction from immersed electrodes |
| 04/08/2004 | DE10244915A1 Filtering process for separating polar organic compounds from effluent produced from biological clarifying plant comprises pre-filtering waste via micro-filter and adsorption-pressure filtering using deformable filter material |
| 04/08/2004 | CA2500135A1 Membrane bioreactor waste water treatment method |
| 04/07/2004 | EP1404620A1 Electromechanical aerator for aeration of liquids |
| 04/07/2004 | EP1152984B1 Novel method for filtering surface water with thin supernatant layer and implementing plant |
| 04/07/2004 | EP0851843B1 Subsurface remediation method and apparatus |
| 04/07/2004 | CN2609921Y Automatic mixing fecal treatment device |
| 04/07/2004 | CN2609919Y Biological contact filter material for purification trough |
| 04/07/2004 | CN2609918Y Self-circulation waste water biological treatment reactor |
| 04/07/2004 | CN1486941A Ozone oxidizing method and apparatus for reducing amount of active sludge |
| 04/07/2004 | CN1486940A Composite stuffing for sewage treating biofilm process |
| 04/07/2004 | CN1144762C Process for treating recovering water of crude oil |
| 04/07/2004 | CN1144761C Sewer/waste water treatment apparatus |
| 04/06/2004 | US6716351 Hydrolysis and acetogenesis in a first reactor; removing ammonia in a second reactor; methanogenesis in a third reactor to avoid ammonia inhibition |
| 04/06/2004 | US6716344 Liquid-solids circulating fluidized bed |
| 04/06/2004 | CA2247406C Biodegradable effluent nutrient removal |
| 04/06/2004 | CA2188198C Peat bale filtration element |
| 04/01/2004 | WO2004026774A1 Method of reducing volume of sludge and apparatus therefor |
| 04/01/2004 | WO2004026773A1 Method for advanced wastewater treatment without excess sludge using sludge disintegration |
| 04/01/2004 | WO2004026771A1 Wastewater biological treatment system and method therefor |
| 04/01/2004 | WO2004026438A2 Coconut mesocarp-based biofilter material and its use in a wastewater treatment system. |
| 04/01/2004 | US20040060862 Process for direct filtration of wastewater |
| 04/01/2004 | DE20317714U1 Geräteträger für Kleinkläranlagen Equipment rack for small wastewater treatment plants |
| 04/01/2004 | DE202004000669U1 Agitator for a sewage treatment basin, in a small-scale sewage plant, has a holder fitted into the basin to support a pump and propeller on a swing arm, to keep the liquid sewage in motion |
| 04/01/2004 | DE10244416A1 Suppression of floating sludge in biological wastewater treatment comprises using a flocculant comprising a polymerized metal hydroxide compound and a quaternized amine |
| 04/01/2004 | DE10244323A1 Device for treating grease-containing effluent before being fed back into a communal effluent pipeline network comprises a hollow body built into the pipeline with openings for introducing oxygen, an oxygen supply unit, and a feed unit |
| 04/01/2004 | CA2499209A1 Wastewater biological treatment system and method therefor |
| 03/31/2004 | EP1403222A1 Method of anaerobically treating organic material and anaerobic treatment apparatus |
| 03/31/2004 | EP1402123A1 Toilet system |
| 03/31/2004 | EP1401776A1 A process for biochemical treatment of waste water using nano materials |
| 03/31/2004 | EP1401775A2 Method, apparatus and biomass support element for biological wastewater treatment |
| 03/31/2004 | EP1337477A4 Improved aerator and mixer |
| 03/31/2004 | EP1200361B1 Method for purifying domestic, agricultural and industrial wastewater |
| 03/31/2004 | CN2608493Y Under water breeding device for treating sewage |
| 03/31/2004 | CN2608492Y 复合厌氧反应器 Hybrid Anaerobic Reactor |
| 03/31/2004 | CN2608491Y Immersion type hollow fiber membrane bioreactor assembly parts |
| 03/31/2004 | CN2608490Y Sewage pipe with internal hanging biological membrane |
| 03/31/2004 | CN2608489Y Membrane biological reactor |
| 03/31/2004 | CN2608488Y High efficiency sewage biological conversion treatment device |
| 03/31/2004 | CN1486284A Anaerobic bioreactor for the wastewater-treatment plant |
| 03/31/2004 | CN1486210A 滤水器 Water Filters |
| 03/31/2004 | CN1485285A Method for promoting UASB startup and improving activity of particle mud |
| 03/31/2004 | CN1485284A Needle brush aerator |
| 03/31/2004 | CN1143830C Sewage treating pool with deep aeration |
| 03/31/2004 | CN1143725C Immersed membrane element and subassembly |
| 03/31/2004 | CN1143720C Device for withdrawing clarified water from clarification plants with discontinuous operation |
| 03/30/2004 | US6712980 Device and method for the treatment of contaminated media |
| 03/30/2004 | US6712970 Sewage treatment process with phosphorus removal |
| 03/30/2004 | US6712882 Process for the purification of industrial waste water from a propylene oxide production process |
| 03/25/2004 | WO2004024640A1 A method for digestion of sludge in water purification |
| 03/25/2004 | WO2004024638A1 Method for the treatment of waste water with sludge granules |
| 03/25/2004 | WO2004024627A1 Method for the production of highly organized crystals by means of sol-gel methods |
| 03/25/2004 | WO2004024307A1 Directional wastewater aerator and method |
| 03/25/2004 | US20040058430 Comprises compounds for bioremediation of waste water and air; air and waste water treatment; pollution control |