| Patents for C02F 3 - Biological treatment of water, waste water, or sewage (46,453) |
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| 02/26/1998 | WO1998007506A1 Hollow fiber membrane module, hollow fiber membrane module unit using the same, and septic tank provided with the module unit |
| 02/26/1998 | DE19635531A1 Verfahren zum Abbau von Triiodbenzolderivaten in wäßrigen Medien A method of degrading in aqueous media Triiodbenzolderivaten |
| 02/26/1998 | DE19633629A1 Verfahren und Vorrichtung zur biologischen Abwassserrreinigung Method and device for biological Abwassserrreinigung |
| 02/26/1998 | DE19631796A1 Biological purification for treating sewage |
| 02/26/1998 | CA2263668A1 Bioreactor |
| 02/26/1998 | CA2261289A1 Method to detect hexahydro-1,3,5-trinitro-1,3,5-triazine (rdx) using rhodococcus rhodochrous, or cell extract thereof |
| 02/25/1998 | EP0824503A1 Waste water treatment process for producing high yields of drinking water |
| 02/25/1998 | CN2275090Y Biological carbon carrier fluidizing reactor |
| 02/25/1998 | CN1174541A Purifying apparatus |
| 02/25/1998 | CN1174178A Comprehensive treatment process for waste papermaking straw pulp liquor |
| 02/24/1998 | US5720876 Reactor for biological sewage purification |
| 02/24/1998 | US5720875 Waste treatment system having means for controlling filtered backwash |
| 02/18/1998 | EP0823887A1 Method and device for a combined treatment of domestic sewage and domestic biodegradable garbage |
| 02/18/1998 | CN1173830A Process for purifying flue gas containing nitrogen oxides |
| 02/17/1998 | US5718823 Device for biological wastewater treatment |
| 02/13/1998 | CA2183146A1 Method and apparatus for management wastewater effluent from various wastewater effluent sources |
| 02/12/1998 | WO1998005597A1 Biodegradation process for de-toxifying liquid streams |
| 02/12/1998 | CA2262498A1 Biodegradation process for de-toxifying liquid streams |
| 02/11/1998 | EP0690826B1 Fixed-bed bioreactor and carrier bodies for purifying fluids |
| 02/11/1998 | CN1173164A Apparatus and process for distributed treatment of wastewater |
| 02/11/1998 | CN1172772A Sewage treatment method for subcurrent crushed stone plant bed |
| 02/10/1998 | US5716518 A mixer comprising a sludge arm conduit, an alkaline arm conduit for stabilizing the waste by supplying alkaline compound |
| 02/09/1998 | CA2182925A1 Turbine for an underwater aerator |
| 02/05/1998 | WO1998004679A1 Process for the biodegradation of aromatic compounds and synthesis of pigments and colorants, alcaloids and polymers, with the use of the recombinant strain escherichia coli p260 |
| 02/05/1998 | WO1998004503A1 Biological treatment of spent caustics |
| 02/05/1998 | WO1998004501A1 Wastewater treatment system and method |
| 02/05/1998 | DE19648860C1 Two-stage waste water purification system using digester to recover methane followed by plantation-polishing |
| 02/05/1998 | DE19630831A1 Multistage biological sewage treatment system |
| 02/05/1998 | CA2261882A1 Biological treatment of spent caustics |
| 02/04/1998 | EP0822253A2 Novel microbial strain, method for biodegrading organic compounds and method for environmental remediation |
| 02/04/1998 | EP0822252A2 Microbial strains, method for biodegrading organic compounds and method for environmental remediation |
| 02/04/1998 | EP0822165A1 Method for the treatment of waste water |
| 02/04/1998 | EP0821658A1 Waste water treatment plant |
| 02/04/1998 | CN1172463A Process for aerobic treatment of waste water |
| 02/03/1998 | US5714062 Diffuser conduit joint |
| 02/03/1998 | US5714061 Apparatus for treating wastewater |
| 02/03/1998 | US5714058 Apparatus for accelerating revival of environment |
| 01/29/1998 | WO1998003437A1 Method and apparatus for biological treatment of waste organic liquid |
| 01/29/1998 | WO1998003436A1 Biodegradation additive containing a meal and a cationic surfactant |
| 01/29/1998 | WO1998003435A1 Biodegradation additive containing a meal and a non-ionic or zwitterionic lipid surfactant |
| 01/29/1998 | WO1998003434A1 Device for controlling dissolved oxygen concentration of aeration tank, device for controlling temperature of aeration tank, device for controlling flow rate of raw water for homogeneous-flow liquid surface, and wastewater treatment equipment used in activated sludge process |
| 01/29/1998 | WO1998003433A1 Water treatment plant using a fluidised bed and physico-chemical settling, and methods therefor |
| 01/28/1998 | EP0820516A2 Exopolysaccharide degrading enzyme and use of the same |
| 01/28/1998 | EP0820335A1 Settling device for a fluid containing liquid, gas and particulate material, as well as a cleaning device provided herewith and a method for cleaning waste water |
| 01/28/1998 | EP0623099B1 Biological method for purifying waste water contaminated with organic carbon and nitrogen compounds |
| 01/28/1998 | EP0620707B1 A method to combat microbes |
| 01/28/1998 | CN2273308Y 生物氧化发生器 Biological oxidation generator |
| 01/28/1998 | CN1171767A Waste water treatment and plant |
| 01/28/1998 | CN1171766A Method and apparatus for sewage water treatment |
| 01/28/1998 | CN1171384A Process for producing active organic compound fertilizer with waste liquid of molasses alcohol |
| 01/25/1998 | CA2196630A1 Method and means for odor control in waste water lagoons |
| 01/22/1998 | WO1998002524A1 Sulphur reducing bacterium and its use in biological desulphurisation processes |
| 01/22/1998 | WO1998002259A1 Method for cleaning capillary and porous media contaminated by crude oil and petroleum products |
| 01/22/1998 | WO1998002258A1 Method for cleaning capillary and porous media contaminated by crude oil and petroleum products |
| 01/22/1998 | DE19640899C1 Treatment of waste waters with high concentration of organic contaminants |
| 01/22/1998 | CA2261287A1 Sulphur reducing bacterium and its use in biological desulphurisation processes |
| 01/21/1998 | EP0819756A1 Sulphur reducing bacterium and its use in biological desulphurisation processes |
| 01/21/1998 | EP0819652A2 Treatment of liquid |
| 01/21/1998 | EP0819099A1 A process for high concentrated waste water treatment using membrane separation |
| 01/21/1998 | CN2272886Y Suspension pipe aerator |
| 01/21/1998 | CN1171066A Microbiological parts washer |
| 01/20/1998 | US5711020 Biodegradation |
| 01/20/1998 | US5709796 Process for digesting cellulose containing solid wastes |
| 01/20/1998 | US5709223 Magnetically modified microbial metabolism |
| 01/19/1998 | CA2209720A1 Treatment of liquid |
| 01/15/1998 | WO1998001397A1 Multi-phase dual cycle influent process |
| 01/15/1998 | WO1998001396A1 A method of biologically cleaning polluted water |
| 01/15/1998 | WO1998001241A1 Biodegradation of the gasoline oxygenates |
| 01/14/1998 | EP0818422A1 Recovery and recycle of foams in a reactor vessel for liquid treatment |
| 01/14/1998 | EP0817759A1 Method and apparatus for treating wastewater |
| 01/14/1998 | EP0817666A1 Method of separating solids from liquids and/or separating emulsions |
| 01/14/1998 | CN2272440Y Elastic padding for water treatment |
| 01/14/1998 | CN2272439Y Aerobic phase separation type fluidizing reactor |
| 01/14/1998 | CN1170335A Device for purifying water by means of water fleas |
| 01/14/1998 | CN1169964A Process and system for sugar degradation biological dephosphorization and denitrogenation |
| 01/14/1998 | CN1169959A Method for treating aqueous media containing organic materials and water hot reacting apparatus |
| 01/14/1998 | CN1036975C Reverse washing method of water processing apparatus using floating filtering material |
| 01/13/1998 | US5707857 Process for the rehabilitation of soils contaminated by hydrocarbons and other biodegradable substances |
| 01/13/1998 | US5707856 Microbiological method for disposing of organic waste materials |
| 01/13/1998 | US5707524 Water treatment using yeasts |
| 01/13/1998 | US5707514 Water treating method and apparatus treating waste water by using ion exchange resin |
| 01/13/1998 | US5707513 Wastewater treatment method and apparatus |
| 01/08/1998 | WO1998000370A1 Low temperature biological nitrification of wastewater |
| 01/08/1998 | WO1998000247A1 Methods and apparatus for mixing a slurry within a bioreactor vessel |
| 01/08/1998 | DE19624943A1 Sewage treatment system for farmsteads or hamlets |
| 01/07/1998 | EP0815961A2 Method for treating process water from a bottle cleaning machine |
| 01/07/1998 | EP0815059A1 Stabilization of bio-organic sludges |
| 01/07/1998 | EP0814894A1 Process for the treatment of gases |
| 01/07/1998 | EP0690752B1 Process for bioremediation of contaminated soil or groundwater |
| 01/07/1998 | EP0688304B1 Process for biological water purification with integrated buffering |
| 01/06/1998 | US5705690 Urea-surfactant clathrates and their use in bioremediation of hydrocarbon contaminated soils and water |
| 01/06/1998 | US5705073 Papermaking |
| 01/06/1998 | US5705072 Treatment of wastes to minimize sulfide content and applying cultures of bacteria to minimize oxygen demand and nitrogen then applying nitrifying bacteria cultures to enhance nitrification and minimize ammonia |
| 01/06/1998 | US5705057 Fluidized bed biological filter assembly for fish tanks |
| 01/06/1998 | US5704989 Closed loop surface cleaning system |
| 01/06/1998 | CA2084881C Controlled-release microbe nutrients and method for bioremediation |
| 01/06/1998 | CA1339618C Filter device |
| 01/02/1998 | DE19625346A1 Verfahren zur Wasseraufbereitung in einem geschlossenen Kreislauf mit Reaktor Water treatment process in a closed circuit with reactor |
| 01/02/1998 | DE19625067A1 Multi stage sewage treatment using plants |
| 01/02/1998 | DE19624429A1 Biological treatment for sewage or drains water |