| Patents for C02F 3 - Biological treatment of water, waste water, or sewage (46,453) |
|---|
| 06/04/1998 | WO1998023540A1 Miniature waste-water treatment system for cleaning of waste-water from one or more households and the like |
| 06/03/1998 | EP0845480A1 Polyvinyl alcohol hydrogel and process for producing the same |
| 06/03/1998 | EP0845290A1 Aeration and mixing unit |
| 06/03/1998 | EP0845286A2 Waste-water filtration and purification device for fish cultivation |
| 06/03/1998 | EP0844981A1 Magnetic separation |
| 06/03/1998 | EP0844915A1 Water recovery from a septic tank |
| 06/03/1998 | EP0748304A4 Improvements in bioremediation of hydrocarbon contaminated soils and water |
| 06/03/1998 | CN1183754A Apparatus for producing air-saturated water |
| 06/02/1998 | US5760261 Antinflammatory agents, antipyretics, analgesics; side effectreduction |
| 06/02/1998 | US5759800 Bioremediation |
| 06/02/1998 | US5759403 Method for purifying waste water using activated slude to increase purification yields |
| 06/02/1998 | US5759401 Process for removing phosphate from waste water |
| 05/28/1998 | WO1998022576A1 Carrier for deposition of microorganism and process for preparing the same |
| 05/28/1998 | DE19649244A1 Machine for converting a mixture of biological waste and renewable materials into, e.g. oil, hydrogen, methane, proteins and heat |
| 05/28/1998 | DE19648115A1 Denitrification of effluent, seepage water or sewage sludge |
| 05/28/1998 | DE19633322C1 Car wash effluent process and assembly discharges through sludge trap |
| 05/27/1998 | EP0844216A2 A method for treating polluted material by wet oxidation |
| 05/27/1998 | EP0843652A1 Method for biodepolluting effluents with high concentrations of pollutants, and strain selection process usable with said method |
| 05/27/1998 | EP0843651A1 Filtration medium |
| 05/27/1998 | CN1182719A Biological activator for septic tank or equivalent |
| 05/26/1998 | US5755966 Method and apparatus for biological activation waste water treatment |
| 05/26/1998 | US5755961 Aquarium system |
| 05/26/1998 | US5755852 Bioconverted nutrient rich humus |
| 05/25/1998 | CA2222106A1 Nitrate detection, measurement, and treatment system |
| 05/22/1998 | WO1998021153A1 Device for cleaning polluted water |
| 05/22/1998 | WO1998021152A1 Groundwater remediation with microporous diffusor |
| 05/22/1998 | WO1998021151A1 A diffuser for aerating a fluid |
| 05/22/1998 | WO1998021150A1 Secondary sewage treatment system |
| 05/20/1998 | EP0842902A1 Process for purifying liquids containing solids |
| 05/20/1998 | EP0842123A1 Process for the biological decontamination of contaminated material |
| 05/20/1998 | EP0700873A4 Waste water treatment method, suspensed matter separation method, and method for saturating a liquid with a gas |
| 05/20/1998 | EP0690823B1 Metal removal from aqueous solution |
| 05/20/1998 | DE19647512A1 Mobile waste water treatment assembly |
| 05/20/1998 | CN2281985Y Civil waste water processor |
| 05/20/1998 | CN1182408A Effluent treatment system |
| 05/19/1998 | US5753122 In situ thermally enhanced biodegradation of petroleum fuel hydrocarbons and halogenated organic solvents |
| 05/19/1998 | US5753114 Device for purifying water by means of water fleas |
| 05/19/1998 | US5753110 Biochemical reactor of liquid current type, groundwater and wastewater purifying system equipped therewith, and liquid transport-stirring apparatus that employs the transport means used in said reactor and system |
| 05/14/1998 | WO1998019971A1 Apparatus for the biological purification of waste water |
| 05/14/1998 | WO1998019970A1 Method for fighting against the presence of scum in plants for the treatment of effluents by activated sludge and plant for implementing such a method |
| 05/14/1998 | WO1998019969A2 Method of phased biological treatment of raw untreated sewage in a biofilter |
| 05/13/1998 | EP0840783A1 Microorganisms that decompose halogenated hydrocarbons and their use |
| 05/13/1998 | CN1181358A Deep purifying and reclaiming appts. and method for industrial organic sewage |
| 05/12/1998 | US5750392 Consisting of nitrite or nitrate ions to enhance growth of denitrifying bacteria |
| 05/12/1998 | US5750028 Biomass separation apparatus and method with media return |
| 05/12/1998 | CA2023902C Method for treating organic waste water by methane fermentation and treating apparatus therefor |
| 05/07/1998 | WO1998018729A1 Method for the biological and biological-chemical treatment of waste water and plant for carrying out this method |
| 05/07/1998 | WO1998018728A1 Support separation screen apparatus, method of aeration of support separation screen, aeration apparatus for the method, waste liquid processing method and apparatus using the screen apparatus and aeration apparatus |
| 05/07/1998 | WO1998018727A2 Biological waste water purification process and device |
| 05/07/1998 | WO1998018536A1 Waste water treatment plant |
| 05/07/1998 | DE19737691A1 Waste water purificn. unit operating aerobically without sludge prodn. |
| 05/07/1998 | DE19645311A1 Verfahren zur phasenweisen biologischen Behandlung von Rohabwasser in einem Biofilter A method for phased biological treatment of raw sewage in a biofilter |
| 05/07/1998 | DE19645267A1 Waste water treatment apparatus |
| 05/07/1998 | DE19644080A1 Verfahren und Vorrichtung zur biologischen Abwasserreinigung Method and device for biological sewage purification |
| 05/06/1998 | EP0839778A1 Porous ceramics composite material and method of making the same |
| 05/06/1998 | EP0839766A2 Multistage process for waste water purification and multi stage water purification system |
| 05/06/1998 | EP0839765A2 Method and system for removing nitrogen and immobilized microorganisms |
| 05/06/1998 | EP0839764A2 Process for purifying waste water and small plant therefor |
| 05/06/1998 | EP0839763A2 Small treatment plant for waste waters |
| 05/06/1998 | EP0839121A1 Method for removing soluble metals from an aqueous phase |
| 05/06/1998 | EP0839120A1 Method and apparatus for contacting gas and liquid |
| 05/06/1998 | EP0777520A4 Zero waste effluent water desalination system |
| 05/06/1998 | EP0766650B1 Anaerobic removal of sulphur compounds from waste water |
| 05/06/1998 | CN2280711Y Up-flow type anaerobic-natural oxygen-recovering biological treatment device |
| 05/06/1998 | CN1181027A Self-cleansing filter |
| 05/06/1998 | CN1181026A Settling device for a fluid containing liquid, gas and particulate materia, as well as a cleaning device provided herewith |
| 05/06/1998 | CN1038258C Ultra-violet method for quick determination of BOD value with aeration |
| 05/05/1998 | US5747311 Process for chemical modification of reactants by microbes |
| 05/05/1998 | US5746921 Fluid flow through column with heavy and lightweight particles of sand; ammonia removal by nitrification with bacteria; nitration |
| 05/05/1998 | US5746920 Process for purifying dairy wastewater |
| 05/05/1998 | US5746919 Temperature-phased anaerobic waste treatment process |
| 05/05/1998 | CA2062314C Apparatus for biological treatment of water and waste, of the attached-growth type |
| 04/30/1998 | WO1998017593A2 Process for preparing and utilizing a potential energy field reactor |
| 04/30/1998 | WO1998017592A1 Biochemical media system for reducing pollution |
| 04/30/1998 | WO1998017583A1 Aeration tank of organic waste liquor and aeration apparatus using the tank |
| 04/30/1998 | WO1998017362A1 Method of gasifying or degasifying a liquid |
| 04/30/1998 | DE19645255C1 Polystyrene ball-packed trickling film bio-reactor cleaning method |
| 04/30/1998 | DE19644334A1 Verfahren zur biologischen und biologisch-chemischen Aufbereitung von Abwasser sowie Anlage zur Durchführung dieses Verfahrens Process for the biological and bio-chemical wastewater treatment plant as well as to perform this procedure |
| 04/29/1998 | EP0838436A1 Automatic purification method of waste liquid/waste water and drainage by complete fermentation method and apparatus therefor |
| 04/29/1998 | EP0837941A1 Detection and biodegradation of explosives |
| 04/29/1998 | EP0837627A1 Methods for reducing environmental contaminants |
| 04/29/1998 | EP0743927A4 Improved wastewater treatment process |
| 04/29/1998 | CN2280097Y Equipment anaerobic bio-treatment of wastewater |
| 04/28/1998 | US5744105 Slurry reactor |
| 04/28/1998 | US5744041 Allowing waste to separate into liquid fraction and suspended organic waste, anaerobically digesting by microorganisms, mixing with aerobic microorganisms and aerobic digesting |
| 04/28/1998 | US5744037 Method of treating foul water |
| 04/28/1998 | CA2061252C Method and system for treating wastewater |
| 04/23/1998 | WO1998016480A1 Biological phosphorus removal from waste waters |
| 04/23/1998 | WO1998016479A1 Waste treatment system employing open-cell foam |
| 04/23/1998 | DE19709384C1 Waste water treatment process immobilises microorganisms on one side of membrane |
| 04/22/1998 | EP0837039A1 Construction of material for carrier structure for group of effective microorganisms and group of products |
| 04/22/1998 | EP0836644A1 Means and process for nitrate removal |
| 04/22/1998 | EP0836585A1 Treatment system for treating waste water |
| 04/22/1998 | EP0836584A1 Microbiological degradation of alkylene amine acetates |
| 04/22/1998 | CN2279358Y Large microporous aeration head |
| 04/22/1998 | CN1179769A Treatment of nutrient-rich water |
| 04/21/1998 | US5741417 System for biologically treating wastewater |
| 04/16/1998 | WO1998015502A1 Method for sewage treatment in small treatment plants |
| 04/16/1998 | WO1998015349A1 Light expanded clay aggregates for phosphorus removal |
| 04/16/1998 | WO1998015338A1 Microbiological method for eliminating halogenated ethenes |