| Patents for C02F 3 - Biological treatment of water, waste water, or sewage (46,453) |
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| 06/13/2001 | CN1067090C Polyvinyl alcohol hydrogel and process for producing same |
| 06/13/2001 | CA2327947A1 Resin cultivating base, water purifying device and method using resin cultivating base |
| 06/12/2001 | US6245552 Method for waste degradation |
| 06/12/2001 | US6245239 Cyclic aeration system for submerged membrane modules |
| 06/12/2001 | US6245237 Method for vacuum aeration of septic tanks to provide low pressure microbubbles |
| 06/12/2001 | US6245236 Reciprocating biological filter |
| 06/12/2001 | US6245235 Butane/oxygen injection system results in substantially improved treatment of contaminated sites. pollutants such as chlorinated aliphatic hydrocarbons |
| 06/12/2001 | US6245121 Method for treating aqueous liquid effluents containing organic and inorganic materials to enable recycling thereof |
| 06/12/2001 | US6244574 Dual diffuser assembly |
| 06/07/2001 | WO2001040118A1 Treatment of aqueous media containing electrically charged compounds |
| 06/07/2001 | WO2001039872A1 Apparatus for mixing and aerating liquid-solid slurries |
| 06/07/2001 | DE19953714C1 Quantitative management and biological treatment of ammonia-rich sludge from dewatering activated sludge in sewage works are carried out simultaneously in common tank |
| 06/07/2001 | DE10056338A1 Treatment of a medium, especially waste water, with microorganisms from bioreactor comprises controlling bioreactor in response to physical, chemical and/or biochemical parameter of medium |
| 06/06/2001 | CN1297852A Biological sewage denitrifying method |
| 06/06/2001 | CN1297791A Raw refuse decomposing and disposaling apparatus |
| 06/05/2001 | US6241889 Trickle tower filter apparatus and looped cord biomedia filter cartridge for use therein |
| 06/05/2001 | US6241888 Method of controlling the phosphorus concentration in biological wastewater purification plants |
| 06/05/2001 | US6241222 Stacked packing with spacing features |
| 06/05/2001 | CA2073969C System and method for treating sewage or other fluids |
| 05/31/2001 | WO2001038517A1 Gene expressing protein capable of capturing metal |
| 05/31/2001 | WO2001038236A1 Anaerobic station for sewage wastewater treatment |
| 05/31/2001 | US20010002313 Includes central manifold which rotates about a verticle axis having longitudinally spaced openings adapted to eject filtrate in a horizontal direction and along a vertical plane towards the wall of the tank; retrofits existing bioreactors |
| 05/31/2001 | DE19953249A1 Verfahren zur Reinigung von Abwasser A process for the purification of waste water |
| 05/31/2001 | DE19951194A1 Mehrzweckschacht, Kleinkläranlage und Abwasserbehandlungsverfahren Multi-Purpose Tray, sewage treatment and waste water treatment process |
| 05/31/2001 | DE19948197A1 Verfahren zur Behandlung von Abwasser einer biologischen Kläranlage A method of treating waste water of a biological treatment plant |
| 05/31/2001 | DE10043176A1 Bio-treatment of nitride (e.g. acrylonitrile)-containing off-gases to prevent ammonia build-up in circulating spray water by including nitration and denitration steps |
| 05/30/2001 | EP1102726A1 Method of liquefying microorganisms derived from biological wastewater treatment processes |
| 05/30/2001 | EP1102724A2 Method and installation for treating waste water from oil seed and cereal processing |
| 05/30/2001 | EP1102721A2 Method and device for separating biomass from water |
| 05/30/2001 | EP0871595B1 Waste water treatment, media therefor and its manufacture |
| 05/30/2001 | CN2432208Y Glazed sphere filling material for treating water |
| 05/30/2001 | CN1296922A Sewage treating plant and industry for water region |
| 05/29/2001 | US6238912 Method and apparatus for contacting gas and liquid |
| 05/29/2001 | US6238564 Sludge treatment method |
| 05/29/2001 | US6238563 Filtered sanitation system |
| 05/29/2001 | US6238562 Process for biological purification of waste water with reversing operation |
| 05/26/2001 | CA2315407A1 Method and apparatus for sewage water treatment using the biological activating system |
| 05/25/2001 | WO2001036689A1 Isolation and use of perchlorate and nitrate reducing bacteria |
| 05/25/2001 | WO2001036652A1 Process for production of biopolymers from nitrogen deficient wastewater |
| 05/25/2001 | WO2001036593A1 Strain of the bacteria bacillius laterosporus ps-2 (brevibacillus laterosporus ps-2), decomposing polychlorinated biphenyls |
| 05/25/2001 | WO2001036340A1 Biological purification plant for residual waters equipped with anaerobic digestors and purification process |
| 05/25/2001 | WO2001036338A1 Process and system for treatment of waste streams containing water-soluble polymers |
| 05/25/2001 | WO2001036075A1 Immersed membrane filtration system and overflow process |
| 05/25/2001 | WO2001036074A1 Immersed membrane element and module |
| 05/25/2001 | CA2391742A1 Process for production of biopolymers from nitrogen deficient wastewater |
| 05/24/2001 | US20010001454 Process for controlling foam in a treatment reactor |
| 05/23/2001 | EP1101754A2 Method for the reduction of sulphur-containing, nitrification-inhibiting compounds |
| 05/23/2001 | EP1101738A2 Apparatus and method for waste water treatment |
| 05/23/2001 | EP0844981B1 Biomagnetic separation |
| 05/23/2001 | EP0683756B1 Reactor for biological sewage purification |
| 05/23/2001 | DE19950457A1 Vorrichtung und Verfahren zum Eintrag von Sauerstoff in Wasser mit einer Membran Apparatus and method for injecting oxygen into the water with a membrane |
| 05/23/2001 | CN1066128C Purifying reusing apparatus for industrial organic sewage |
| 05/23/2001 | CN1066127C Method for direct using waste water in circular water |
| 05/22/2001 | USRE37181 Adding nitrate compound; using hydrogen sulfide for metabolism |
| 05/22/2001 | US6235515 Malathion carboxylesterase |
| 05/22/2001 | US6235248 Complex of a transition metal chelate and nitrogen oxide can be biologically regenerated in the presence of an electron donor, |
| 05/22/2001 | US6235196 Biological wastewater treatment system |
| 05/22/2001 | CA2324635A1 Process for reducing the amount of nitrification-inhibiting sulfur compounds |
| 05/17/2001 | WO2001034528A1 Method for treating bacterial effluents containing at least a gordonia terrae cip i-2194 ether |
| 05/17/2001 | WO2001034527A1 Biochemically enhanced thermophilic treatment process |
| 05/17/2001 | WO2001034315A1 Method of degrading hardly degradable harmful material |
| 05/17/2001 | WO2001033952A1 An apparatus for housing a suspended medium |
| 05/17/2001 | DE19954437A1 Waste water treatment plant incorporates sludge settlement stages, oil separator, biological treatment and storage, being of prefabricated, partitioned construction |
| 05/17/2001 | DE19949265A1 Verfahren zum Minimieren des Neuwassereinsatzes im Wasserkreislauf bei einer Aufbereitungsanlage A method for minimizing the Neuwassereinsatzes in the water cycle at a treatment plant |
| 05/17/2001 | DE10017618A1 Conditioning of water, e.g. ground water, contaminated with halohydrocarbons, especially chlorohydrocarbons, uses mixture of metal granulate and carbonaceous organic material |
| 05/17/2001 | CA2390310A1 Process for decomposing hardly decompasable harmful substances |
| 05/17/2001 | CA2390075A1 An apparatus for housing a suspended medium |
| 05/16/2001 | EP1099753A1 Method for growing Burkholderia cepacia in a cobalt-containing medium and use thereof for degradating TBA or TAA |
| 05/16/2001 | EP1099668A1 Process for the purification of communal or similar waste water |
| 05/16/2001 | EP1099020A1 A process for concentrating soluble and colloidal substances in process waters |
| 05/16/2001 | EP1098855A1 Wastewater treatment process |
| 05/16/2001 | EP0912449B1 A method of biologically cleaning polluted water |
| 05/16/2001 | CN2430441Y Clarifying device in ship shape pool |
| 05/16/2001 | CN2430440Y Lift flow biological denitrification filter pool |
| 05/16/2001 | CN2430439Y 拼装式曝气生物滤池 Assembled BAF |
| 05/16/2001 | CN2430438Y Biological contact aerating bath |
| 05/16/2001 | CN2430437Y Purifying bath for waste water |
| 05/16/2001 | CN1295543A Treatment of waste materials |
| 05/16/2001 | CN1065838C Method for arranging aerating pipelines |
| 05/15/2001 | US6231766 Water treatment process |
| 05/15/2001 | US6231756 Rotary distributor speed control system for trickling filters |
| 05/15/2001 | US6231268 Apparatus and method for treatment of large water bodies by directed circulation |
| 05/15/2001 | CA2109990C Direct delivery in-situ diffuser cleaning |
| 05/10/2001 | WO2001032567A1 Method for treating aqueous effluents containing peroxidized compounds |
| 05/10/2001 | WO2001032565A2 Method for purification of effluent water |
| 05/10/2001 | WO2001032561A1 Process for the purification of industrial waste water from a propylene oxide production process |
| 05/10/2001 | DE19954680A1 Ship borne water effluent treated by high concentration bio-process for membrane separation and re-use under rapidly changing conditions |
| 05/10/2001 | DE19953459A1 Waste water treatment combined biological reactor and filter module membrane surfaces self-cleaned by rising low-energy particles |
| 05/10/2001 | DE19942475A1 Teichfilter Pond Filter |
| 05/10/2001 | CA2427191A1 Improvements in flotation/fractionation systems for treating liquids and in separation of liquids to be treated thereby |
| 05/10/2001 | CA2389696A1 Method for treating aqueous effluents containing peroxidized compounds |
| 05/09/2001 | EP1097908A1 Circuit purification for the papermaking industry |
| 05/09/2001 | EP1096976A1 Biodispersion as a method for removal of hydrocarbon oil from marine aqueous environments |
| 05/09/2001 | EP0885173B1 Process and apparatus for effecting a biological aerobic pretreatment of dairy industry effluent |
| 05/09/2001 | CN2429522Y Biochemical treating apparatus for water center |
| 05/09/2001 | CN1065515C Method for improving bottom and water quality in water areas and a set of agents used in method |
| 05/08/2001 | US6228267 Waste water treatment method and equipment being able to economically treat both a waste water and an exhaust gas respectively containing fluorine and organic matter |
| 05/08/2001 | US6228266 Water treatment apparatus using plasma reactor and method thereof |
| 05/08/2001 | US6228264 Introducing sludge containing microorganisms into a treatment tank, introducing waste water containing fluorine into the treatment tank, treating the waste water biologically using microorganisms which accumulates the fluorine of the water |
| 05/08/2001 | US6228263 Treatment of sulphate- and metal-containing water |