| Patents for C02F 3 - Biological treatment of water, waste water, or sewage (46,453) |
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| 07/15/2004 | DE10256918A1 Verfahren zum Klären von Abwasser unter Bildung von Überschussschlamm und entsprechende Abwasser-Kläranlage Method for clarifying waste water with the formation of excess sludge and appropriate wastewater treatment plant |
| 07/14/2004 | EP1436234A1 Organic waste treatment |
| 07/14/2004 | CN1511796A Push flow composite biological mud volume reducing reactor and its operation method |
| 07/14/2004 | CN1511792A Bubble-free oxygen supply film biological reactor |
| 07/14/2004 | CN1157344C Biochemical process for treating waste waster with nano material carbon black |
| 07/13/2004 | US6761823 System and method for removing contaminants from water |
| 07/08/2004 | WO2004056713A1 Module for process equipments in a purifying plant |
| 07/08/2004 | WO2004056458A2 Methods for cleaning and maintaining membrane surface during filtration |
| 07/08/2004 | WO2004046037A3 Purification of contaminated water |
| 07/08/2004 | US20040130044 Floating paddlewheel aerator |
| 07/08/2004 | US20040130043 Device for stirring and aerating a liquid in a treatment vessel |
| 07/08/2004 | US20040129634 Septic system treatment process |
| 07/08/2004 | US20040129619 Aquaculture system |
| 07/08/2004 | DE19823350B4 Wirbelschichtreaktor zur Reinigung von mit biologisch abbaubaren Schadstoffen belasteten Flüssigkeiten Fluidized bed reactor for cleaning up polluted with biodegradable pollutants liquids |
| 07/08/2004 | DE10258173A1 Economically- and ecologically-favorable peatification of variety of sludges to give dry peat involves feeding and withdrawing liquid in peatification bed |
| 07/08/2004 | DE10197211T5 Verfahren und umgekehrter Fließbett-Kreislaufreaktor zur Abwasserreinigung Method and reverse circulation fluidized bed reactor for wastewater treatment |
| 07/08/2004 | DE10043595B4 Wasserfilter Water Filters |
| 07/07/2004 | EP1435340A2 Soil water purifier |
| 07/07/2004 | EP1435339A2 Method and device for the treatment of effluent, sludge and organic substrates |
| 07/07/2004 | EP1434740A2 Device and method for biological treatment of waste water |
| 07/07/2004 | EP1434648A1 Air diffuser membrane treated with biocide |
| 07/07/2004 | CN2623686Y Small-sized sewage treatment equipment for speedway service area |
| 07/07/2004 | CN2623685Y Biology fluidised form module |
| 07/07/2004 | CN1511115A Method and device for anaerobic purification of slurry which contains organic constituents |
| 07/07/2004 | CN1511114A Enhanced biogas production from nitrogen bearing feed stocks |
| 07/07/2004 | CN1509995A Improved sewage secondary biochemical treating process and reactor |
| 07/07/2004 | CN1509994A Membrane rector with rotary brush |
| 07/07/2004 | CN1509993A Oxygen-enriched gas printing and dyeing sewage treating tower |
| 07/07/2004 | CN1509991A Low temperature nitrobacter agent and use thereof |
| 07/07/2004 | CN1156580C Thermophilic methanotrophs for high-temp. oxidations |
| 07/07/2004 | CN1156410C Split type film biological reactor |
| 07/06/2004 | US6758973 Supplying water to sludge separator to separate suspended material, lowering oxygen demand by depositing biological pollutants on biostep filter, reducing content of phosphorus and heavy metals in ion exchange process using sorbent filter |
| 07/06/2004 | US6758972 Method and system for sustainable treatment of municipal and industrial waste water |
| 07/06/2004 | US6758965 Apparatus for treating wastewater from catering industry |
| 07/06/2004 | US6758886 Three-phase separator and installation for biological purification of effluent |
| 07/06/2004 | CA2096940C Gas particle formation |
| 07/01/2004 | WO2004054935A1 Waste water treating device |
| 07/01/2004 | WO2004054692A1 Hollow fiber membrane module combined with air diffuser |
| 07/01/2004 | WO2004035478A3 Water purification by means of catalytic surfaces and microorganisms |
| 07/01/2004 | WO2004022488A3 Method and apparatus for enhancing wastewater treatment in lagoons |
| 07/01/2004 | WO2004018067B1 Airlift membrane device, bioreactor and bioreaction process |
| 07/01/2004 | US20040124550 Strip diffuser |
| 07/01/2004 | US20040124139 Coconut mesocarp-based biofilter material and its use in a wastewater treatment system |
| 07/01/2004 | US20040124138 Septic tank; deodorizing modules; automatic controller |
| 07/01/2004 | US20040124137 Using an alkane; stimulate bacteria; digestion of wastes; deodorizing |
| 07/01/2004 | US20040124132 Carbon dioxide recycle for immersed membranes |
| 06/30/2004 | EP1433755A1 Method and Apparatus for the Treatment of Wastewater using Activated Sludge |
| 06/30/2004 | EP1433754A2 System and process for treating carbonaceous wastes |
| 06/30/2004 | EP1432652A2 Method and device for purifying wastewaters |
| 06/30/2004 | EP1432535A1 Method for processing waste products and corresponding processing plant |
| 06/30/2004 | EP1054840B1 Wastewater treatment plant comprising upflow anaerobic reactor, and wastewater treatment method using thereof |
| 06/30/2004 | CN2622173Y Biological treatment and reuse equipment for municipal manure and daily wastewater |
| 06/30/2004 | CN2622169Y Tubular and variable microporous rubber film type aerator |
| 06/30/2004 | CN2622168Y Disc-shaped, multiple-arc base and variable micro-porous rubber film aerator |
| 06/30/2004 | CN2622167Y Batch-type activated sludge method equipment for treating kitchen waste-water |
| 06/30/2004 | CN1508244A High-density live-bacterial fermenting process for live-bacterial biological water-purifying agent |
| 06/30/2004 | CN1508243A Water-purifying bacillus subtilis, bacterial agent and solid fermenting process and use |
| 06/30/2004 | CN1508082A Apparatus and method for treating wastewater using biolgical filtering medium |
| 06/30/2004 | CN1508081A Biological filler and preparing method and apparatus constructed thereof and use |
| 06/30/2004 | CN1507938A Method and apparatus for hollow fiber as biomembrane carrier |
| 06/30/2004 | CN1155527C Combined biological rotary cage complete equipment |
| 06/30/2004 | CN1155526C Biological treatment method for waste alkali liquid |
| 06/29/2004 | US6755981 Aquarium cleaning system |
| 06/29/2004 | US6755972 Biological purification of water to any degree up to and drinking water |
| 06/29/2004 | US6755971 Microbiological removal of bromine salts from fluid streams |
| 06/29/2004 | CA2339695C System for removing phosphorus from waste water |
| 06/29/2004 | CA2216322C Immobilization of bacterial cells or sludge using chitosan crosslinked with lignosulphonate |
| 06/24/2004 | WO2004052796A1 Rotating biological contactor |
| 06/24/2004 | WO2004052795A1 Method and system for the treatment of wastewater |
| 06/24/2004 | WO2004052790A2 Apparatus for treatment of wastewater employing membrane bioreactors |
| 06/24/2004 | US20040118759 Method for water denitrification |
| 06/24/2004 | US20040118701 Flow-through oxygenator |
| 06/24/2004 | DE10356208A1 Process to operate small-scale waste water treatment process in a sequential batch reactor or water retained by a lagoon dam, using depth pressure measurements |
| 06/23/2004 | EP1431253A2 Clarification device for the biological treatment of water |
| 06/23/2004 | EP1431252A2 Filter element for a clarification device for biological water treatment |
| 06/23/2004 | EP1431251A2 Clarification installation with a trickle filter system |
| 06/23/2004 | EP1430000A1 Biological water treatment assembly including a bacteria growth device and method associated thereto |
| 06/23/2004 | EP1429999A1 Composition and the use thereof as a coagulating and flocculating agent |
| 06/23/2004 | EP0944732A4 Method and apparatus for measuring use of a substrate in a microbially catalysed reaction |
| 06/23/2004 | CN2621179Y Device for treating factory waste water and producing fuel grade dimethyl ether by methanol liquid phase dehydration |
| 06/23/2004 | CN2621178Y Rotation water decanter |
| 06/23/2004 | CN1507418A Organoboron waste stream treamtent using hydrogen peroxide |
| 06/23/2004 | CN1506324A Underwater lawn |
| 06/23/2004 | CN1506323A Underwater lawn |
| 06/23/2004 | CN1506322A Integrated biological denitrifying reactor |
| 06/23/2004 | CN1506321A Heterotropic flow bioaeration technique and apparatus |
| 06/23/2004 | CN1506145A High-speed filtering machine using fiber filtering material |
| 06/23/2004 | CN1154616C Method and installation for treating waste water frmo oil seed and cereal processing |
| 06/23/2004 | CN1154615C Automatic controller for sewage treatment process |
| 06/23/2004 | CN1154528C Improvement to solid-liquid separating equipment in particular for boilogical purification of waste water |
| 06/22/2004 | US6753179 Method for purification treatment of environmental pollutants |
| 06/22/2004 | US6752926 Using an immobilized cell packed bed (icpb) bioreactor, and at least one membrane oxygenation module attached to an external recirculation line; oxidation, nitrification |
| 06/22/2004 | US6752921 Bioreactor tank internally chambered to sequentially perform biological treatment and membrane filtration |
| 06/17/2004 | WO2004050566A2 Method for purifying waste water and corresponding waste water purification installation |
| 06/17/2004 | WO2004050565A1 Aquarium-cleaning device utilizing formed charcoal |
| 06/17/2004 | WO2004050564A1 Apparatus and method for performing tertiary treatment of sewage based on porous filtering media |
| 06/17/2004 | WO2004050221A1 Mixing chamber |
| 06/17/2004 | WO2004026438A3 Coconut mesocarp-based biofilter material and its use in a wastewater treatment system. |
| 06/17/2004 | US20040115782 Method and apparatus for hydrogen production from organic wastes and manure |
| 06/17/2004 | US20040115120 Anerobic bacterial reduction of sulfur with hydrogen in liquid medium in presence of electron donor; mild, ambient conditions |