| Patents for C02F 3 - Biological treatment of water, waste water, or sewage (46,453) |
|---|
| 05/24/1994 | US5314821 Method of separating bacteria from free living amoebae |
| 05/24/1994 | US5314806 Byproduct of Bayer process |
| 05/24/1994 | US5314622 Dual purpose oxygenator |
| 05/24/1994 | US5314621 Method for the biological purification of wastewater |
| 05/24/1994 | US5314620 Cutting oil treatment |
| 05/24/1994 | US5314619 Method and apparatus for pond water clarification and maintenance |
| 05/24/1994 | US5314076 Installation for the mixing of two fluid phases by mechanical stirring, notably for the treatment of water by transfer of oxidizing gas, and use of such an installation |
| 05/24/1994 | CA2103495A1 Apparatus for purifying a liquid effluent containing pollutants and process for purifying said effluent |
| 05/24/1994 | CA2041329C Sequencing batch reactors |
| 05/19/1994 | DE4238871A1 Pumping agitator arrangement esp. for use in effluent water treatment plants - comprises nitrification basin, denitrification basin contg. bottom circulator with removable upper cover plate, lower suction pot and suction side feed channel |
| 05/19/1994 | DE4238708A1 Reducing sludge discharge from waste water treatment - by high-temp. fermentation of sludge from aerobic clarifier or anaerobic digester |
| 05/18/1994 | EP0597283A2 Method for biodegradation of polluting substance |
| 05/18/1994 | EP0222799B2 Process for introducing oxygen into water and device for implementing the process |
| 05/18/1994 | CN2165129Y Vertical aeration water filtering apparatus |
| 05/11/1994 | WO1994010290A1 Thermophilic cellulose-decomposing bacterium and utilization thereof |
| 05/11/1994 | WO1994010095A1 Open-pore bulk mineral materials containing microorganisms, and the manufacture and use of such materials |
| 05/11/1994 | EP0596210A1 Apparatus for dissolving gas in liquid including pressurized bubble contactor in sidestream |
| 05/11/1994 | DE4237424A1 Sewage treatment using percolation unit with pre- and post-clarification tanks - in which water is recycled from buffer space downstream of percolation tank to stabilise rate of flow through percolation unit |
| 05/11/1994 | DE4237387A1 Removal of biological nitrogen from contaminated water, esp. from sludge treatment - by flowing water through nitrification bed reactor into which oxygen is introduced followed by entry into denitrification chamber |
| 05/11/1994 | DE4235558C1 Vertical reactor for dissolving gas in liq., and esp. oxygen@ in water - liquid and gas pass downwards through number of perforated plates at velocity chosen so that limited bubble zone is formed beneath each plate |
| 05/10/1994 | US5310485 Process for dissolved gas flotation in anaerobic wastewater treatment |
| 05/10/1994 | US5310484 Preaeration treatment of volatile wastewater components |
| 05/07/1994 | CA2102012A1 Apparatus for dissolving gas in liquid including pressurized bubble contactor in sidestream |
| 05/05/1994 | DE4236567A1 Biological waste water purificn. tank - has service bridge positioned above rotating barrier panel bridge |
| 05/04/1994 | EP0595441A1 Composition and method for dehalogenation and degradation of halogenated organic contaminants |
| 05/04/1994 | EP0595359A1 Method and device for wastewater purification |
| 05/04/1994 | EP0595027A1 Process for the biological cleaning of exhaust air |
| 05/04/1994 | EP0594623A1 Method for purification of wastewater |
| 05/04/1994 | EP0498875B1 Biological treatment method and apparatus including denitrification for waste water |
| 05/04/1994 | EP0463062B1 Bioslurry reactor for treatment of slurries containing minerals, soils and sludges |
| 05/04/1994 | CN1086194A Treatment of liquids |
| 05/03/1994 | US5308492 Water treatment with membranes |
| 05/03/1994 | US5308491 Monitoring and adjusting salinity of waste water undergoing secondary clarification process |
| 05/03/1994 | US5308490 Sewage delivery for an activated sludge process |
| 05/03/1994 | US5308479 Sewage disposal apparatus employing circulating filter media |
| 05/03/1994 | CA1329281C Miniturized modular rotating biological contactor system |
| 05/03/1994 | CA1329280C Modular rotating biological contactor system |
| 04/28/1994 | WO1994009125A1 Dynamic bed reactor |
| 04/28/1994 | WO1994008907A1 Process for intensification of fermentations |
| 04/28/1994 | WO1994008906A1 A method and a device for aerating waste water |
| 04/28/1994 | DE4312891C1 Decontaminating aq. sludges by removal of gaseous and liq. harmful substances - by microbiological oxidn. with water-filled porous microorganism carrier body on the surface of the sludge |
| 04/28/1994 | DE4235892A1 Porous clay and slate for cleaning soiled material - contains immobilised microorganisms as bacteria, esp. to convert hydrocarbon |
| 04/27/1994 | EP0593834A1 Process and installation for the biological purification of water |
| 04/27/1994 | EP0523081B1 Process and installation for purifying waste water |
| 04/27/1994 | CN1085877A A method for improving bottom and water quality in water areas and a set of agents used in the method |
| 04/26/1994 | US5306422 Compact clarifier system for municipal waste water treatment |
| 04/20/1994 | EP0593393A1 Biological air filter |
| 04/20/1994 | CA2108752A1 Method of treating wastewater |
| 04/19/1994 | US5304308 Control method in double-tank-type intermittent aeration activated sludge process |
| 04/19/1994 | US5304301 Apparatus for the injection of compressed air into a liquid |
| 04/19/1994 | CA1328633C Microbiological purification of water and a microorganism for use in said process |
| 04/14/1994 | WO1994007802A1 Odour controlled waste water treatment system |
| 04/14/1994 | WO1994007801A1 Floating media hourglass biofilter |
| 04/14/1994 | DE4233847A1 Sewage oxygen enrichment in sewage and industrial waste - using recirculating tube system with an inner membrane hose to disperse oxygen into the flowing aq. medium |
| 04/13/1994 | EP0592058A1 Process for optimising nitrogen removal in clarification processes |
| 04/13/1994 | EP0509985B1 Bacteriolytic enzyme native to a nocardiopsis strain, its production and use. |
| 04/13/1994 | EP0396648B1 A process for the microbiological purification of water |
| 04/13/1994 | CN2161613Y Water purifier |
| 04/12/1994 | US5302288 Treatment of highly colored wastewaters |
| 04/12/1994 | US5302287 Breaking up soil, mixing with water, biodegradable detergent, separating floating contaminants, repeating, adding activator for microorganisms which remove remaining contaminants, separating, washing, returning, recycling decontaminated water |
| 04/12/1994 | US5302286 Adding nutrients to groundwater as it flows through well |
| 04/12/1994 | US5302285 Culturing wash water with sewage bacteria reduces ammonium perchlorate to ammonium chloride |
| 04/07/1994 | DE4308832C1 Removing organic impurities from water by gas stripping and filtering - with inoculation with deposits and bio-growth from trickler and filter |
| 04/07/1994 | DE4233458A1 Biological cleaning of coarse loose organic material - by using water in container with microorganisms to breakdown hydrocarbon(s) |
| 04/07/1994 | DE4233121A1 Biomass carrier with large surface area - has web sections held between bars of immersed frame in reactor as part of sewage cleaning process |
| 04/06/1994 | EP0590746A1 Proteases to inhibit and remove biofilm |
| 04/06/1994 | EP0590074A1 Baffle system for anaerobic sewage treatment pond |
| 04/06/1994 | EP0589896A1 Blowing a gas into a granular filter bed. |
| 04/06/1994 | CN1084832A Sewage treating method by biological membrane ball filtering tower |
| 04/06/1994 | CN1084831A Vertical flow-reflection multi-function biolochemical reactor |
| 04/05/1994 | US5300227 Bioremediation of hydrocarbon contaminated soils and water |
| 04/05/1994 | US5300226 Hauling waste in one direction and non-waste in another direction without contamination; anaerobic digestion producing biogas to enhance growth of vegetation |
| 04/05/1994 | CA1328319C Process for the production of filler-containing, polymer-bound compositions the compositions obtained by this process and their use |
| 03/31/1994 | WO1994006734A1 Methods and apparatus for disposal and treatment of waste |
| 03/31/1994 | WO1994006720A1 Floating nitrification reactor in a treatment pond |
| 03/31/1994 | WO1994006719A1 Improvements in processes for the alkaline biodegradation of organic impurities |
| 03/30/1994 | EP0589833A1 Method and apparatus for the manufacture of a gasifying membrane |
| 03/30/1994 | EP0589818A2 Process for the biological removal of nitrated derivatives |
| 03/30/1994 | EP0589155A1 Anaerobic treatment of substrates with high fat content |
| 03/30/1994 | EP0588842A1 Fixed-bed reactor for the biological treatment of sewage |
| 03/30/1994 | CN1084497A Apparatus and method for purifying high density organic sewage |
| 03/29/1994 | US5298164 Waste water treatment within a single closed vessel |
| 03/29/1994 | US5298163 Anaerobic fermentation of biomass, displacement of hydrogen sulfide formed with neutral gas |
| 03/29/1994 | CA2106609A1 Proteases to inhibit and remove biofilm |
| 03/24/1994 | DE4331932A1 Bio-gas prodn. from manure - has sludge gassing station to give gas for gas turbine for electricity generation and used sludge is dried for disposal |
| 03/24/1994 | DE4331927A1 Sewage nitrogen and phosphorus removal - separates nitrogen in a main flow and strips out the phosphor in a side flow |
| 03/23/1994 | EP0587807A1 A process for de-pollution by means of biodegradation and means for performing the same. |
| 03/23/1994 | EP0587557A1 Bubbleless gas transfer device and process |
| 03/22/1994 | US5296201 Sensor for detecting gas space, means for venting chamber |
| 03/22/1994 | US5296200 Apparatus for venting excess gas bubbles from a bubble contactor |
| 03/22/1994 | US5296147 Controlling reactor loading for optimum nitrification and denitrification |
| 03/22/1994 | US5296146 Reducing concentration of TNT-related explosives |
| 03/22/1994 | US5296111 Biooxidation |
| 03/22/1994 | US5295918 Drive system |
| 03/22/1994 | US5295568 Passenger conveyor and treadboard construction for passenger conveyor |
| 03/22/1994 | CA1328028C Aeration method and apparatus |
| 03/17/1994 | WO1994005604A1 Bioremediation of contaminated groundwater |
| 03/17/1994 | DE4302321C1 Waste water treatment tank for Removing suspended particles, esp. phosphate-contg. particles - has aeration elements with outlets for receiving water passed through overhead filter cleaned by filter cleaning device |
| 03/17/1994 | DE4230644A1 Recovery of carbon di:oxide from coal power stations - and converting into methane by anaerobic fermentation. |
| 03/17/1994 | CA2122269A1 Bioremediation of contaminated groundwater |