| Patents for C02F 3 - Biological treatment of water, waste water, or sewage (46,453) |
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| 04/23/2003 | CN2546439Y Active sludge biological treating tank |
| 04/23/2003 | CN1413173A Method for biological purification of effluent |
| 04/23/2003 | CN1412132A Intermittent water-supplied grass crop rotation cropping and rotation harvesting nutrients-enriched poor water cleaning equipment |
| 04/23/2003 | CN1412131A Method for treating organic waste liquor by using methane bacterium fermentation |
| 04/23/2003 | CN1412130A Waste water treatment device using waste tyre carrier biological method |
| 04/23/2003 | CN1106354C Waste treatment device and process |
| 04/23/2003 | CN1106353C Waste water treatment process and apparatus |
| 04/23/2003 | CN1106214C Method and equipment for preparing air-containing vesicles |
| 04/22/2003 | US6551511 Denitrification promoter and a method of water treatment using the same |
| 04/22/2003 | US6551510 Organic material is fed to a first reactor for hydrolysis and dissolution to form volatile fatty acids, liquid is transferred to another reactor for methanogenesis |
| 04/22/2003 | US6551463 Integrated system and method for purifying water, producing pulp and paper, and improving soil quality |
| 04/22/2003 | US6550747 Cyclic aeration system for submerged membrane modules |
| 04/17/2003 | WO2003031601A1 Method of purifying mercury-contaminated material and microorganisms to be used therein |
| 04/17/2003 | WO2003031349A1 Device and method for purifying wastewater |
| 04/17/2003 | WO2003031348A2 Process for recovering and recycling compounds contained in effluents of delignification and bleaching processes in pulp mills |
| 04/17/2003 | WO2003031039A1 Air diffuser membrane treated with biocide |
| 04/17/2003 | US20030073225 Treating water source to remove methyl-tert-butyl ether and methyl-tert-amyl ether; obtain water source, incubate with preferential bacteria under aerobic conditions, degrade impurties, monitor water health |
| 04/17/2003 | US20030071377 Air diffuser membrane treated with biocide |
| 04/17/2003 | US20030070996 Comprises water with chlorine, ammonia, then with ozone to disinfect, then passing through a filter containing microorganisms, then further chlorination |
| 04/17/2003 | US20030070986 Method and device for sewage treatment |
| 04/17/2003 | US20030070985 Apparatus for subsurface aerated treatment of wastewater |
| 04/17/2003 | US20030070972 Soil covered environmentally affirmative household sewage treatment system |
| 04/17/2003 | US20030070971 Capillary permeation driven pottery pipe trench waste water treatment system |
| 04/17/2003 | DE20300126U1 Remote monitoring unit for water treatment plant has text message failure reporting |
| 04/16/2003 | EP1302447A2 Process for the treatment of aqueous effluents containing methyl tert-butyl ether and/or methyl tert-amyl ether by mycobacterium austroafricanum I-2562 |
| 04/16/2003 | EP1302446A1 Method for sludge reduction in a waste water treatment system |
| 04/16/2003 | EP1301441A1 An oriented structure for treating a fluid |
| 04/16/2003 | EP1301440A1 Immersed fixed bed biological reactor and method for treating liquid effluents |
| 04/16/2003 | CN2545196Y Domestic sewage high-efficiency purifying recovery device |
| 04/16/2003 | CN2545195Y Radial closed arc cord aeration rotary disk |
| 04/16/2003 | CN2545194Y High-efficiency coated light biologic ceramsite |
| 04/16/2003 | CN2545193Y Anaerobic / aeration trickling filter device |
| 04/16/2003 | CN1410367A Inorganic filler for biotreating polluted water |
| 04/16/2003 | CN1410366A Reversible circulation two phase biological nitrogen and phosphorus eliminating technology |
| 04/16/2003 | CN1410364A Quick automatic treating device of polluted water |
| 04/16/2003 | CN1105688C Biological acid process for separating lignin from alkaline papermaking black liquor |
| 04/15/2003 | US6548294 Device for treatment of waste materials with harvester access zone |
| 04/15/2003 | US6547968 Cleaning microfiltration membranes; immersion in tank; pulsation, drying cycles |
| 04/12/2003 | WO2003033420A1 Soil water purifier |
| 04/10/2003 | WO2003029152A2 Method and device for purifying wastewaters |
| 04/10/2003 | WO2003029151A1 Composition and the use thereof as a coagulating and flocculating agent |
| 04/10/2003 | US20030066806 Treatment of water containing organic wastes with aromatic amine nitrate salts |
| 04/10/2003 | US20030066799 Endogenous respiration; reducing oxygen demand; aeration; water pollution control |
| 04/10/2003 | US20030066790 Wastewater treatment system |
| 04/10/2003 | US20030066789 Covering systems and venting methods |
| 04/10/2003 | US20030066761 Water pollution control |
| 04/09/2003 | EP1300469A1 Expression of laccase from basidiomyctes in transgenic plants |
| 04/09/2003 | EP1300367A2 Small installation for the treatment of wastewater |
| 04/09/2003 | EP1156870B1 Device and method for the treatment of contaminated media |
| 04/09/2003 | EP1147062B1 Method and installation for sanitizing surface water |
| 04/09/2003 | CN2543954Y Aeration biological filter material for filter pool |
| 04/09/2003 | CN2543953Y Filling type enternal circulation biological reactor |
| 04/09/2003 | CN2543952Y Filling type inner circulation biological reactor |
| 04/09/2003 | CN2543951Y Filling type baffle biological reactor |
| 04/09/2003 | CN2543948Y Biological film ferrous and manganese removing water purifier |
| 04/09/2003 | CN1408652A Nitrogen treating method and nitrogen treating system |
| 04/09/2003 | CN1408650A Biological technology for high efficiency, fast treating high concentration organic waste water and use |
| 04/09/2003 | CN1408649A Integrated A2/O biochemical system |
| 04/09/2003 | CN1105087C Biological sewage treatment plant |
| 04/09/2003 | CN1105086C Device and process for simultaneous biological elimination of phosphorus and nitrogen from waste water |
| 04/09/2003 | CN1105085C Single-tank sewage treatment plant |
| 04/09/2003 | CN1105084C Buogant, swirlable substrate material for biotechnological processes |
| 04/08/2003 | US6544928 Virus capable of specifically infecting, growing within, and lysing red tide plankton; a method and an agent for preventing red tide using the virus; a method for isolating the virus; and a method for subculturing the virus |
| 04/08/2003 | US6544421 Method for purification of waste water and “RFLR” device for performing the same |
| 04/08/2003 | US6543753 Air diffuser membrane treated with biocide |
| 04/08/2003 | CA2083199C Method for the treatment of sewage and installation to be used for this method |
| 04/05/2003 | CA2407385A1 Covering systems and venting methods |
| 04/03/2003 | WO2003027555A2 Porous pipe |
| 04/03/2003 | WO2003027031A1 Biological water treatment assembly including a bacteria growth device and method associated thereto |
| 04/03/2003 | WO2003027030A1 Apparatus for the purification of water |
| 04/03/2003 | WO2003027022A2 Wastewater treatment system |
| 04/03/2003 | WO2003026783A1 Liquid current generating device |
| 04/03/2003 | US20030062321 Temperature does not affect performance in nitrogen removal. |
| 04/03/2003 | US20030062307 Using diffusers to force circulation and aerate a digesting lagoon. Several lagoons may be used in series to treat raw animal waste and different variations may be employed to successively digest raw waste. |
| 04/03/2003 | US20030062306 Especially removing heavy metal impurities from surface water, groundwater and soil |
| 04/03/2003 | US20030062305 Biological processes |
| 04/03/2003 | CA2453228A1 Wastewater treatment system |
| 04/02/2003 | EP1296896A1 Three-phase separation device for treating waste water and sludge |
| 04/02/2003 | EP1102724B1 Method and installation for treating waste water from oil seed and cereal processing |
| 04/02/2003 | EP0938456B1 Microbial remediation process and apparatus therefor |
| 04/02/2003 | CN2542657Y Close-coupled sewage treatment device |
| 04/02/2003 | CN1406886A Vent method and device without strenuous stir decomposition and biodegradation |
| 04/02/2003 | CN1406880A Treatment of cyanophyta in eutrophic water by eichhornia crassipes |
| 04/02/2003 | CN1406879A Three-phase separator and device for biological sewage purification |
| 04/02/2003 | CN1104386C Method of treating ammonia-comprising waste water |
| 04/02/2003 | CN1104385C Carrier-separating and water-collecting mechanism of waste water treatment equipment |
| 04/01/2003 | US6541139 Septic battery |
| 04/01/2003 | US6540924 Method and a device for treating liquids |
| 04/01/2003 | US6540920 Wastewater treatment system utilizing textile filter media |
| 04/01/2003 | US6540919 Method of treating waste-activated sludge using electroporation |
| 04/01/2003 | US6540912 Aerobic polishing system for wastewater |
| 04/01/2003 | US6540910 Recirculation of wastewater in a filtration bed |
| 03/27/2003 | WO2003025235A1 Process for the recovery of lead from scrap batteries |
| 03/27/2003 | WO2003024875A2 Method for the biological and chemical/oxidative treatment of waste water containing dye |
| 03/27/2003 | WO2002051756B1 Method and conditioning agent for treating waste water and air pollutants |
| 03/27/2003 | US20030059927 Wherein particles of the waste are buoyed and form a floating bed in the liquid by the gases generated by the anaerobic digestion of the wastes |
| 03/27/2003 | US20030057587 Use of pre-sorted plastic material wastes and process for producing a granular material as a filter for the purification of sewage |
| 03/27/2003 | US20030057162 Treatment of aqueous media containing electrically charged compounds |
| 03/27/2003 | US20030057152 Device for treatment of wastewater |
| 03/27/2003 | DE20213058U1 Denitrification filter operating on interval basis, e.g. for aquarium, has cyclical filling device connected to filter vessel |