| Patents for C02F 3 - Biological treatment of water, waste water, or sewage (46,453) |
|---|
| 06/07/1989 | CN1033266A Netty film aerator |
| 06/01/1989 | WO1989004712A1 Process for removing hazardous substances from water or air |
| 06/01/1989 | DE3837785A1 Method for automatic reactor circulation |
| 06/01/1989 | DE3807622C1 Process for the electrochemical breakdown of halogenated hydrocarbons or other not readily biodegradable halogenated compounds |
| 05/31/1989 | EP0318098A1 Process and apparatus for the anaerobic purification of waste water |
| 05/30/1989 | US4834879 Two-stage waste water treatment system for single family residences and the like |
| 05/30/1989 | US4834872 Aeration/flotation reactor |
| 05/30/1989 | US4834343 Gas liquid contacting method |
| 05/24/1989 | DE3738880A1 Verfahren zur entfernung von schadstoffen aus wasser oder luft A process for removing pollutants from water or air |
| 05/24/1989 | CN1033040A Improved fluidized bed process and apparatus |
| 05/23/1989 | US4833086 Plasmids, pollution control, culture of alcaligenes, ethylene dchloride |
| 05/23/1989 | US4832848 Method of and apparatus for establishing and maintaining dispersions of liquid and gaseous fractions |
| 05/23/1989 | US4832847 Process for activated-sludge treatment of sewage or industrial waste water |
| 05/23/1989 | US4832846 Septic tank baffle |
| 05/23/1989 | CA1254679A1 Method for minimizing diurnal swing in phosphorus content of effluent streams from wastewater treating plants |
| 05/18/1989 | WO1989004208A1 Device for dispersing gas within a liquid phase |
| 05/17/1989 | CN1032927A Circulating water jet aeration facility for iron and manganese removal from the underground water |
| 05/16/1989 | US4830743 Water treatment apparatus |
| 05/16/1989 | US4830126 Apparatus for the automatic measurement of the apparent weight of a sludge contained in a liquid and system for automatically measuring the PONSAR index of such a sludge, using the apparatus |
| 05/16/1989 | CA1254310A1 Wastewater treatment method |
| 05/11/1989 | DE3836523A1 Verfahren und einrichtungen zur verhinderung des auftretens bzw. der fortpflanzung von kleinstlebewesen in brauchwasser Procedures and equipment for prevention of occurrence or the reproduction of the smallest critters in domestic water |
| 05/11/1989 | DE3737030A1 Process and appliance for the biological removal of phosphates from sewage |
| 05/10/1989 | EP0315526A1 In situ anoxic detoxification process for contaminated ground water |
| 05/10/1989 | EP0315233A1 Fluidized bed process and apparatus |
| 05/10/1989 | EP0314699A1 Recovery of material |
| 05/10/1989 | CN2037363U Portable microporosity aeration unit |
| 05/09/1989 | US4828882 Fluidized beds, biomass |
| 05/09/1989 | US4828696 Water aeration apparatus |
| 05/09/1989 | US4828577 Dewatering, containing fats and proteins, for self-sustained gasifiers |
| 05/09/1989 | CA1253979A1 Method of and an apparatus for treating sewage |
| 05/09/1989 | CA1253978A1 Anaerobic digestion apparatus and process |
| 05/09/1989 | CA1253819A1 Nutrient for stimulating aerobic bacteria |
| 05/05/1989 | WO1989003807A1 Prevention of the occurence or proliferation of microorganisms in water for industrial use |
| 05/03/1989 | CN2036946U Integrated device for treatment of high density sewage |
| 05/03/1989 | CN2036945U Propeller water-flow oxygen enhancement machine |
| 05/02/1989 | US4826602 Reduction of trace elements to the elemental form by microorganisms |
| 05/02/1989 | US4826601 Aeration, precipitation, flocculation, settling |
| 05/02/1989 | US4826600 Process for treatment of wastewater |
| 04/27/1989 | DE3812781C1 Apparatus for the secondary clarification of municipal or industrial waste waters by mixed algal cultures |
| 04/25/1989 | US4824572 Method and apparatus for treating household waste water |
| 04/25/1989 | US4824571 Methanation |
| 04/25/1989 | US4824563 Equipment for treating waste water |
| 04/25/1989 | CA1253267A1 Wastewater treatment method |
| 04/25/1989 | CA1253266A1 Bulk volume fermenter |
| 04/20/1989 | WO1989003369A1 Improved process and equipment for purifying treatment and utilization of waste-waters from the dairy industry |
| 04/20/1989 | DE3733583A1 Method and apparatus for producing very fine air bubbles for the purpose of floatation of sludges |
| 04/20/1989 | DE3727408A1 Plant for sludge utilization |
| 04/20/1989 | DE3725489A1 Verfahren zur biologischen abwasserreinigung von diethanolamin Processes for biological wastewater treatment of diethanolamine |
| 04/19/1989 | EP0311887A2 Mechanical-biological sewage treatment plant |
| 04/19/1989 | EP0311765A2 Apparatus for destruction of foam |
| 04/19/1989 | CN1032432A Improved fluidized bed process and apparatus |
| 04/18/1989 | US4822490 Bacterial compositon and method for recovery of oil-polluted water and soil |
| 04/13/1989 | DE3733081A1 Process for the biological purification of waste water |
| 04/12/1989 | EP0311216A1 Improved fluidized bed process and apparatus |
| 04/12/1989 | EP0311215A1 Fluidized bed process |
| 04/12/1989 | CN2035751U Rotational impeller oxygen enriching machine |
| 04/11/1989 | US4820457 Apparatus for aerating water |
| 04/11/1989 | US4820415 Filler containing hydrophilic open-celled polymer carrying microorganisms needed for conversion |
| 04/11/1989 | US4820412 Element for the transfer of gas into liquids, in particular, for the transfer of oxygen in sewage treatment plants |
| 04/11/1989 | CA1252406A1 Fluidised bed reactor for biological treatement, namely of water |
| 04/06/1989 | DE3731998A1 Apparatus for water aeration |
| 04/05/1989 | CN2035352U Medium & micro aperture gas-explosion device |
| 04/05/1989 | CN2035351U Energy-saving oxygen increasing machine |
| 04/04/1989 | US4818579 Sheet for forming twisted flaps in continuous arrangement and method of producing same |
| 04/04/1989 | US4818414 Retaining waste filtrate |
| 04/04/1989 | US4818408 Wastewater, activated sludge |
| 04/04/1989 | US4818407 Nitrification with ammonia enrichment |
| 04/04/1989 | US4818406 Biological degradation of chemicals bearing an oxydibenzene nucleus |
| 04/04/1989 | US4818405 Sludge treatment |
| 04/04/1989 | US4818404 Submerged biological wastewater treatment system |
| 04/04/1989 | US4818393 Apparatus for the anaerobic treatment of waste water |
| 04/04/1989 | US4818391 Integral Clarifier |
| 04/04/1989 | CA1252233A1 Sewage-aeration system, and method for the operation and use thereof |
| 03/30/1989 | DE3731791A1 Air atomizer |
| 03/30/1989 | DE3731778A1 Apparatus for aerating water |
| 03/30/1989 | DE3731617A1 Container and individual and overall installation for biogas installations |
| 03/29/1989 | EP0309352A1 Process and installation for increasing the sludge concentration in waste-water treatment plants |
| 03/29/1989 | CN2034972U Iron and manganese removing device for groundwater |
| 03/28/1989 | US4816403 Detoxification of chlorinated aromatic compounds by organism NRRL B-18086 |
| 03/28/1989 | US4816158 Aeration, settling, separation |
| 03/28/1989 | CA1251749A1 Process for the preparation of methane using algal fermentation |
| 03/23/1989 | EP0278973A4 Process for the degradation of coal tar constituents by white rot fungi. |
| 03/23/1989 | DE3729894A1 Plant for biological sludge detoxification and sludge mineralisation |
| 03/21/1989 | US4814125 Clay, foaming agent, furnace slag |
| 03/21/1989 | US4814085 Fixing carrier for activated sludge in sewage or waste water treatment |
| 03/16/1989 | DE3729239A1 Process for purifying, in particular, domestic waste water in a biological sewage treatment plant |
| 03/14/1989 | US4812237 For household use |
| 03/14/1989 | CA1251290A1 Process and apparatus for anaerobic fermentation of solid wastes in water in two phases |
| 03/14/1989 | CA1251279A1 Determination of oxygen uptake rate in wastewater treatment plants |
| 03/14/1989 | CA1251169A1 Strain cage for gravity flow system |
| 03/09/1989 | WO1989001915A1 Aeration wheel and plant for aeration of water |
| 03/09/1989 | DE3729127A1 Process and apparatus for biologically purifying waste waters of their phosphate impurities |
| 03/08/1989 | EP0306431A1 Process for the reduction of pollutions dissolved in a liquid |
| 03/08/1989 | EP0306054A1 Apparatus for the aerobic biological purification of water containing toxic matter |
| 03/08/1989 | EP0306053A2 Reactor and process for the biological purification of polluted water |
| 03/08/1989 | CN1031517A Mixed carrier for treating ramie-degumming waste water |
| 03/07/1989 | US4810386 Aeration, settling |
| 03/07/1989 | US4810385 Device for seeding bacterial cultures to systems to assist in biodegrading waste |
| 03/07/1989 | US4810377 Clarification device |
| 03/02/1989 | DE3827364A1 Verfahren zur steuerung von reinigungsanlagen fuer abwaesser Method for control of cleaning systems for wastewater |