| Patents for C02F 3 - Biological treatment of water, waste water, or sewage (46,453) |
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| 01/21/2004 | EP1382576A1 Basin and process for transforming material |
| 01/21/2004 | EP1381574A1 Disintegration of anaerobically digested sewage sludge |
| 01/21/2004 | EP1381573A2 Cultivation of bacteria in wastewater treatment |
| 01/21/2004 | EP1381572A2 Method and device for the treatment of fluids in particular for effluent purification |
| 01/21/2004 | CN2600439Y Sewage treatment wet land |
| 01/21/2004 | CN2600438Y Swirl auto-driven mass transfer anaerobic reactor |
| 01/21/2004 | CN2600437Y Order group type bio-membrane reactor system |
| 01/21/2004 | CN2600436Y Modified biomembrane oxygen deficient hydrolitic technique device |
| 01/21/2004 | CN2600435Y 曝气生化塔 Biochemical tower aeration |
| 01/21/2004 | CN2600434Y Treatment circulation device for waste water of public toilet |
| 01/21/2004 | CN1469846A Processes and systems for treating waste water |
| 01/21/2004 | CN1468817A Organic waste liquid treatment method and apparatus |
| 01/21/2004 | CN1468799A Method of preparing hydrogen with garbage and sewage |
| 01/20/2004 | US6679993 Improved sludge settleability using micronized zeolite |
| 01/20/2004 | US6679992 Efficient, simple chemical and biological reduction using reducing agent and nutrient source for heterotrophic anaerobic microorganism |
| 01/20/2004 | CA2108574C Apparatus for the gasification of liquids |
| 01/19/2004 | CA2435319A1 Integrated technology for treatment and valorization of organic waste |
| 01/15/2004 | WO2004005200A1 Wastewater disposal system using aquatic plants over four seasons without greenhouse |
| 01/15/2004 | WO2004005199A1 Method and system for treat organic wastewater |
| 01/15/2004 | WO2004005198A1 Floating media filter |
| 01/15/2004 | WO2004005197A2 Effluent treatment combining solid/liquid separation and pulsed electric fields |
| 01/15/2004 | WO2004004465A1 Functional water with deodorization activity and sterilization activity against multi-drug resistent bacteria, and a preparation method thereof |
| 01/15/2004 | WO2003074428B1 Pre- and post-treatment system and method for periphyton filtration using ozone |
| 01/15/2004 | US20040007527 Membrane filtration device and process |
| 01/15/2004 | US20040007525 Maintenance cleaning for membranes |
| 01/15/2004 | US20040007524 Compositions for removing hydrocarbons and halogenated hydrocarbons from contaminated environments |
| 01/15/2004 | US20040007523 Provides efficient aeration delivery to drastically reduce the time needed to oxidize organic matter, then recirculating, shredding, and homogenizing |
| 01/15/2004 | DE20315555U1 Vorrichtung zum Verwerten von Flüssigabfällen Apparatus for recycling of liquid waste |
| 01/15/2004 | DE20311944U1 Farbeffekt-Schichten und -Beschichtungen auf Basis photonischer Kristalle Color effect layers and coatings based on photonic crystals |
| 01/15/2004 | DE20311943U1 Poröse Materialien für die Blockung von UV-Strahlung Porous materials for the blocking of UV radiation |
| 01/15/2004 | DE20311942U1 Poröse Materialien für die Blockung von IR-Strahlung Porous materials for the blocking of IR radiation |
| 01/15/2004 | DE20311940U1 Poroese Materialien zur Immobilisierung von Bakterien Porous materials for the immobilization of bacteria |
| 01/15/2004 | DE20311939U1 Poröse Materialien als Katalysatorträger in chemischen und verfahrenstechnischen Anwendungen Porous materials as catalyst supports in chemical and process engineering applications |
| 01/15/2004 | DE20311937U1 Poröse Materialien für die Reinigung und Aufbereitung von Wasser Porous materials for the purification and treatment of water |
| 01/15/2004 | DE10228876A1 Verfahren zur gezielten Stickstoffelimination bei Pflanzenkläranlagen oder anderen bewachsenen Bodenfilter Method for the selective removal of nitrogen in wetlands or other wetland |
| 01/14/2004 | EP1380555A1 Method and device for processing manure |
| 01/14/2004 | EP1380545A1 Wastewater treatment unit |
| 01/14/2004 | EP1380544A1 Process and device for the purification of contaminated water |
| 01/14/2004 | EP1379472A1 Device for stirring and aerating a liquid in a treatment vessel |
| 01/14/2004 | EP1379325A1 Device for stirring and aerating a liquid in a treatment vessel |
| 01/14/2004 | CN2598998Y Container type sewage treatment equipment |
| 01/14/2004 | CN2598997Y Expansion particle sludge bed organic waste water anaerobic reactor |
| 01/14/2004 | CN2598996Y Multiple nest type circulation flow aeration tower |
| 01/14/2004 | CN2598995Y Automatic control fast biological film reaction sewage treatment equipment |
| 01/14/2004 | CN2598994Y Ecological circulating treatment system for water closet |
| 01/14/2004 | CN2598993Y Multifunctional biofilter |
| 01/14/2004 | CN1134375C Biological process for treating sewage containing complexones |
| 01/13/2004 | US6676836 Surge anoxic mix sequencing batch reactor systems |
| 01/08/2004 | WO2004002904A1 Combined activated sludge-biofilm sequencing batch reactor and process |
| 01/08/2004 | WO2004002903A1 Method for treating an effluent in three biological steps |
| 01/08/2004 | WO2004002896A1 Treating micro-organisms in water using boron conditioned enzymes |
| 01/08/2004 | WO2004002605A1 Dual porosity filter |
| 01/08/2004 | US20040004038 Method and apparatus for treating sludge, and method and apparatus for treating wastewater utilizing the same |
| 01/08/2004 | DE10226795A1 Verfahren zur biologischen Abwasseraufbereitung Processes for biological wastewater treatment |
| 01/08/2004 | DE10163977B4 Trägerkörper für die Besiedlung von Mikroorganismen Body for the colonization of microorganisms |
| 01/08/2004 | CA2527486A1 Dual porosity filter |
| 01/08/2004 | CA2489559A1 Treating micro-organisms in water using boron conditioned enzymes |
| 01/07/2004 | EP1378493A2 Spa water circulation system comprising a water purification system |
| 01/07/2004 | EP1377654A2 Black water recycle circulation loop use with a gasifier |
| 01/07/2004 | EP1377362A1 Floating paddlewheel aerator |
| 01/07/2004 | CN2597470Y Equipment for treating water extracted from oil field |
| 01/07/2004 | CN1466553A Method for effluent purification |
| 01/07/2004 | CN1465534A AL based control system and method for treating waste water by means of a neural network and a back-prpagation algorithm |
| 01/07/2004 | CN1465530A Digital waste water treatment machine |
| 01/07/2004 | CN1465421A Gas back-flushing method for filter pool |
| 01/07/2004 | CN1133742C Microorganisms that decompose halogenated hydrocarbons and their use |
| 01/07/2004 | CN1133598C Water purifying agent and water purifying method |
| 01/07/2004 | CN1133597C Method for removing micropollutant nitrate and nitrite from drinking water |
| 01/07/2004 | CN1133511C Raw refuse decomposing and disposaling apparatus |
| 01/06/2004 | US6673244 Magnetic sludge suitable for use in wastewater treatment, method for preparing the same and method for wastewater treatment |
| 01/06/2004 | US6673243 Fluid flow; removal suspended solids |
| 01/06/2004 | US6673241 Self-floating cover system for a body of water |
| 01/02/2004 | EP1376276A1 An AI based control system and method for treating sewage/waste water by means of a neural network and a back-propagation algorithm |
| 01/02/2004 | EP1375437A1 Apparatus and method for treating wastewater containing nitrogen-containing dyes |
| 01/02/2004 | EP1375436A1 Method for operating a sequencing batch reactor for wastewater treatment |
| 01/02/2004 | EP1375435A2 Waste water treatment apparatus |
| 01/02/2004 | EP1373147A1 Method and device for the anaerobic purification of a slurry containing organic constituents |
| 01/02/2004 | EP1373146A2 Activated sludge wastewater treatment for the removal of endocrine disrupters |
| 01/02/2004 | EP1135199B1 Slow sand filter for use with intermittently flowing water supply and method of use thereof |
| 01/01/2004 | US20040000518 Wastewater trickle tower(s) controlling and grooming cross-reference to related application |
| 01/01/2004 | US20040000517 Tidal vertical flow wastewater treatment system and method |
| 12/31/2003 | WO2004000737A1 Apparatus and methods for purifying a waste influent material |
| 12/31/2003 | CN2595800Y Under water lawn |
| 12/31/2003 | CN2595799Y Under water lawn |
| 12/31/2003 | CN2595798Y Waste water biochemical treating pool |
| 12/31/2003 | CN2595797Y Long Handle filter head special for aeration biological filter pool |
| 12/31/2003 | CN1463934A Microbiological water purification agent and process for manufacturing same |
| 12/31/2003 | CN1463933A Incorporated double settling zone tridimensional circulating oxidation ditch facility and method of operating thereof |
| 12/31/2003 | CN1463932A Sewage treatment bioreactor |
| 12/31/2003 | CN1132790C 硫化物产生抑制剂 Sulfide production inhibitor |
| 12/31/2003 | CN1132789C City sewage treatment technology |
| 12/31/2003 | CN1132788C Process for treating waste water from production of gournet powder |
| 12/31/2003 | CN1132787C Combined mechanism for elevating aerator and swinging packings freely |
| 12/31/2003 | CN1132654C 用于间歇式流动供水的慢砂过滤器及其使用方法 Intermittent flow slow sand filter and method of use of water for |
| 12/30/2003 | US6669847 Method for water denitrification |
| 12/30/2003 | US6669846 Introducing at least one alkane such as butane into the wastewater, wherein the butane stimulates the growth of butane-utilizing bacteria |
| 12/30/2003 | US6668556 Gas transfer energy recovery and effervescence prevention apparatus and method |
| 12/25/2003 | US20030234224 Mixing with an oxidant, e.g. an alkali or alkaline metal hypohalite, to oxidize ammonia, urea and nitrates to nitrogen gas; suitable for discharge to the environment; water treatment; pollution control; water pollution |
| 12/25/2003 | US20030234219 Oxidation-Reduction-Potential based management of biological systems: Part 1, ORPO process: ORP based wastewater treatment process |
| 12/25/2003 | US20030234218 Using artificial intelligence (AI) to measure inflow and outflow of water at a sewage treatment plant; collecting data of the measured fluid present value and operation-processing data to convert said data into physical quantity data |