Patents for C02F 3 - Biological treatment of water, waste water, or sewage (46,453) |
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10/27/1994 | CA2160451A1 Microorganism of genus bacillus cereus and use thereof |
10/27/1994 | CA2160373A1 Treatment of wastewater and sludges |
10/26/1994 | EP0620756A1 Gas particle formation. |
10/26/1994 | EP0620707A1 A method to combat microbes |
10/26/1994 | EP0539430B1 Bioreactor |
10/26/1994 | EP0530226B1 Method for removing nitrogen from an aqueous solution |
10/25/1994 | US5358671 Aerator device |
10/25/1994 | US5358636 Apparatus for the treatment of waste sludge |
10/25/1994 | CA1332763C Fluidised bed reactor for biological purification of effluent |
10/25/1994 | CA1332719C Microbiological process for the purification and the valorization of an organic effluent containing a fermentable sugar |
10/20/1994 | DE4321552C1 Apparatus and process for the continuous biological purification of waste water - in particular for relatively small and medium-scale businesses |
10/19/1994 | EP0620191A1 Process and apparatus for crude waste water purification with nutrients elimination |
10/18/1994 | US5356570 Apparatus for aerating liquids |
10/18/1994 | US5356537 Method and apparatus for treating waste water |
10/18/1994 | US5356533 Bubbling system |
10/13/1994 | WO1994023134A1 Use of bicarbonates in the biodegradation of hydrocarbon contaminants |
10/13/1994 | WO1994022773A1 Silage-microbial mat system and method |
10/13/1994 | WO1994022772A1 Oxidative method of purifying highly contaminated waste water |
10/13/1994 | WO1994022770A1 Metal removal from aqueous solution |
10/13/1994 | WO1994022605A1 Process for bioremediation of contaminated soil or groundwater |
10/13/1994 | CA2159484A1 Silage-microbial mat system and method |
10/13/1994 | CA2159198A1 Oxidative method of purifying highly contaminated waste water |
10/12/1994 | EP0619132A1 Device for introducing gas in liquids |
10/12/1994 | EP0575314B1 Method and reactor for purification of water |
10/12/1994 | EP0436715B1 Process for separating and/or recovering hydrocarbon oils from water using biodegradable absorbent sponges |
10/12/1994 | CN2179375Y Aerator |
10/12/1994 | CN2179374Y Natural return waste water treatment apparatus |
10/12/1994 | CN1093343A Automatic and quick wastewater purification system by biological method |
10/11/1994 | US5354545 Contacting gaseous effluent with aqueous solution to dissolve sulfur compounds, adjusting concentration of buffers, oxidizing to produce elemental sulfur |
10/11/1994 | US5354471 Aerobic, continuous and sequencing batch processes |
10/06/1994 | DE4332762C1 Process and apparatus for the biological treatment of organically polluted waste water and organic waste |
10/06/1994 | DE4328162A1 Rapid method for determining mass-transport and reaction-kinetic design parameters for anaerobic biofilm reactors |
10/04/1994 | US5352610 Tubular membrane assembly |
10/04/1994 | US5352608 Bioreduction of metal oxides and oxyanions by photosynthetic bacteria |
10/04/1994 | US5352444 Stabilization of biowastes |
10/04/1994 | US5352421 Method and apparatus for effecting gas-liquid contact |
10/04/1994 | US5352391 Gas distributor for small-bubble aeration of water |
10/04/1994 | US5352357 Waste water treatment system |
10/04/1994 | US5352356 Stovepipe decanter apparatus |
10/04/1994 | CA1332249C Waste water treating process |
10/03/1994 | CA2120323A1 Photoconductor for electrophotography |
09/29/1994 | WO1994021568A1 Sewage treatment plant |
09/29/1994 | WO1994021567A1 Method and apparatus for pond water clarification and maintenance |
09/29/1994 | WO1994021566A1 Fixed-bed bioreactor and carrier bodies for purifying fluids |
09/29/1994 | WO1994021565A1 Means for continuous digestion of organic matter |
09/29/1994 | WO1994021561A1 Compact clarifier system for municipal waste water treatment |
09/29/1994 | WO1994021394A1 Methods for the biodegradation of environmental pollutants |
09/29/1994 | DE4330422C1 Process and plant for disposing of the contents of multiple chamber ditches and sumps |
09/29/1994 | DE4309686A1 Aeration apparatus for a tank charged with a liquid medium, in particular a sedimentation tank |
09/29/1994 | DE4304782A1 Method for dispersing liquids, suspensions and heterogeneous fluids, and stirring and gas admixture system for implementing the method |
09/29/1994 | CA2158865A1 Method and apparatus for pond water clarification and maintenance |
09/29/1994 | CA2135482A1 Means for continuous digestion of organic matter |
09/28/1994 | EP0616978A1 Process and precipitant for separating organic pollutants from waste water |
09/28/1994 | EP0604588A4 Waste-water treatment system. |
09/27/1994 | USRE34740 Styrene-vinylpyridine copolymer |
09/27/1994 | US5350511 Sewage purification apparatus |
09/27/1994 | US5350507 Contact device and container for a rotating biological contactor |
09/27/1994 | US5350505 Plastic media filter |
09/22/1994 | DE4409375A1 Securing device for an overflow weir in a waste-water (sewage) disposal tank |
09/22/1994 | DE4308920A1 Device for the treatment of biorefuse or the like |
09/22/1994 | DE4308159A1 Process for decreasing the COD load in wastewater |
09/21/1994 | CN2177720Y Bag type reactor for biochemical treatment of organic sewage |
09/21/1994 | CN2177719Y Efficient porous apparatus for treating water |
09/21/1994 | CN1092386A Treatment of highly colored wastewaters |
09/20/1994 | US5348803 Microcapsules and method for degrading hydrocarbons |
09/20/1994 | US5348655 Method for increasing the capacity of sewage treatment plant |
09/20/1994 | US5348654 Co-current packed tower bio-reactor |
09/20/1994 | US5348653 Process for the biological purification of effluent |
09/20/1994 | US5348650 Waste water treatment apparatus |
09/20/1994 | CA1332083C Two-stage wastewater treatment |
09/20/1994 | CA1332082C Microbiological decomposition of chlorinated aliphatic hydrocarbons |
09/15/1994 | WO1994020426A1 Process for biological water purification with integrated buffering |
09/15/1994 | WO1994020425A1 Improved method for purifying waste water using activated sludge to increase purification yields |
09/15/1994 | CA2157795A1 Improved method for purifying waste water using activated sludge to increase purification yields |
09/14/1994 | EP0614525A1 Method and apparatus for monitoring a supply of gas |
09/14/1994 | CN1092043A Microparticle biological filter bed for purifying water |
09/13/1994 | US5346620 Process for waste water treatment by removal of sodium sulfate |
09/13/1994 | US5345620 Composting toilet |
09/13/1994 | CA1332007C Process for activated-sludge treatment of sewage or industrial waste water |
09/08/1994 | DE4409435A1 Apparatus and process for the simultaneous biological elimination of phosphorus and nitrogen from wastewater |
09/08/1994 | DE4314766C1 Compressed-air aeration device for water and wastewater |
09/07/1994 | EP0428747B1 Method and apparatus of filtering medium circulation type for purifying contaminated water |
09/07/1994 | CN1091723A Method for treatment of waste water containing pentaerythritol |
09/06/1994 | US5344563 Circular aeration basin and annular clarifier channels, flow by pumping |
09/06/1994 | US5344562 Biological dephosphatization and (de)nitrification |
09/06/1994 | US5344557 Incubator for biological cleaning of fluids |
09/06/1994 | CA1331897C Process for treating wastewater |
09/06/1994 | CA1331896C Two-stage batch wastewater treatment |
09/06/1994 | CA1331894C Fluidized bed process and apparatus |
09/06/1994 | CA1331893C Fluidized bed process and apparatus |
09/06/1994 | CA1331892C Fluidized bed process and apparatus |
09/06/1994 | CA1331890C Process for treatment of water containing volatile and toxic compounds |
09/01/1994 | WO1994019729A1 Process for operating a sewage water clarification plant and sewage water clarification plant |
09/01/1994 | WO1994019479A1 Substrate bioavailability enhancing agent for use in bioremediation |
09/01/1994 | WO1994019287A1 Method for preventing hydrogen sulfide formation |
09/01/1994 | DE4306844A1 Process for the combined physical/chemical cleaning of waters contaminated with the explosive substances 2,4,6-trinitrotoluene, hexahydro-1,3,5-trinitro-1,3,5-triazine and octahydro-1,3,5,7-tetranitro-1,3,5,7-tetrazine |
09/01/1994 | DE4305754A1 Process for reducing the emissions from furnaces, incinerators and exhaust air systems and for combined elimination of contaminants in pollutant gases and waste waters |
08/31/1994 | EP0612704A1 Process for acidifying manure, in which ammonia is fixed and carbon dioxide gas is emitted |
08/31/1994 | EP0612696A1 Method and device for controlled motion of water in water basins |
08/31/1994 | EP0612695A1 Biomass growth control apparatus for fluid bed biological reactor |