| Patents for C02F 3 - Biological treatment of water, waste water, or sewage (46,453) |
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| 05/14/1997 | EP0773192A1 Selenium containing sewage treatment process and apparatus |
| 05/14/1997 | EP0772880A1 A method of decontaminating a cementitious or a metallic surface |
| 05/14/1997 | EP0772571A1 A reactor for use in water treatment and micro film carriers for use in connection with said treatment as well as a method for operating the reactor |
| 05/14/1997 | CN2254079Y Combined porous ceramic cell aerator |
| 05/14/1997 | CN1149557A Environment recovery purifier with biological degradation function |
| 05/13/1997 | US5628904 Process for treatment of wastewater utilizing zebra mussels (dreissena polymorpha) |
| 05/09/1997 | WO1997016381A1 Composition for the treatment of municipal and industrial waste-water |
| 05/07/1997 | EP0772084A2 Bleaching or bleach-fixing solution comprising a metal complex of a polyamino monosuccinic acid |
| 05/07/1997 | EP0771761A1 Method and installation for purifying contaminated water |
| 05/07/1997 | EP0669799B1 Water quality control in fish ponds |
| 05/07/1997 | EP0637210B1 Method for treatment of potato fruit water |
| 05/07/1997 | DE19540945A1 Surface aerator for settlement tanks comprising horizontal composite of hollow sections |
| 05/06/1997 | US5626755 Method and apparatus for waste digestion using multiple biological processes |
| 05/06/1997 | US5626754 Apparatus and process for biological wastewater treatment with controlled addition of carbonaceous organic substrates in the anoxic phase |
| 05/06/1997 | US5626644 Storm water remediatory bioconversion system |
| 05/06/1997 | US5626437 Filtration through porous pellets inoculated with microorganisms |
| 05/02/1997 | EP0770580A1 Process for the biological purification of waste water |
| 05/01/1997 | WO1997015354A1 Methods for decomposing quinolones and naphthyridones |
| 05/01/1997 | CA2235485A1 Methods for decomposing quinolones and naphthyridones |
| 04/30/1997 | DE19644457A1 Granulärer Träger zur Behandlung von Schmutzwasser oder Abwasser, Verfahren zu dessen Herstellung und Vorrichtung zur Behandlung von Schmutzwasser oder Abwasser unter Verwendung des granulären Trägers Granular carrier for the treatment of sewage or waste water, process for its production and device for treating sewage or waste water, using the granular support |
| 04/30/1997 | DE19617283A1 Verfahren zum Abbau von Chinolonen und Naphthyridonen Process for the degradation of quinolones and Naphthyridonen |
| 04/29/1997 | US5624565 Method of Regulating Aeration in a basin for bilogical treatment of wastewater |
| 04/29/1997 | US5624564 Process for dehydration and concentration of sewage sludge |
| 04/29/1997 | US5624563 Process and apparatus for an activated sludge treatment of wastewater |
| 04/29/1997 | US5624562 Apparatus and treatment for wastewater |
| 04/27/1997 | CA2188706A1 Process for the biological treatment of waste water |
| 04/24/1997 | WO1997014658A1 Cyanide containing effluent purification process |
| 04/24/1997 | DE19618126C1 Simultaneous flotation and sedimentation carried out in circular tank under anaerobic conditions |
| 04/24/1997 | DE19604164C1 Treatment of water from car washing facilities |
| 04/24/1997 | DE19539121A1 Gas-liquid mixing process and device for aeration of waste water |
| 04/24/1997 | DE19538387A1 Small-scale water treatment plant conversion |
| 04/23/1997 | EP0769479A1 Process for cleaning a waste water stream or the like |
| 04/23/1997 | EP0769478A1 Process for the removal of organic material from solid particles |
| 04/23/1997 | EP0768925A1 Aerobic treatment process, device and plant for slurries |
| 04/23/1997 | CN1148040A Recovery and treatment of mother solution of mono sodium 2-naphthylamine-5,7 disulfonic acid |
| 04/17/1997 | WO1997013727A1 Method and device for biologically treating liquids in the presence of particles forming a floating bed |
| 04/17/1997 | WO1997013726A1 Biological method of treating sewage containing high concentrations of sludge |
| 04/17/1997 | DE19604659C1 Waste water purification bio-reactor |
| 04/17/1997 | DE19537698A1 Biologische Abwasserreinigung bei hohen Schlammkonzentrationen Biological wastewater treatment sludge at high concentrations |
| 04/17/1997 | CA2234559A1 Biological waste water treatment at high sludge concentrations |
| 04/16/1997 | EP0767632A1 Method for delivering a gas-supersaturated fluid to a gas-depleted site and use thereof |
| 04/16/1997 | EP0623098B1 Apparatus for the oxidation of water |
| 04/16/1997 | CN1147803A Composition and method for sewage treatment using fungal and bacterial enzymes |
| 04/16/1997 | CN1147469A Toilet equipment on ship |
| 04/15/1997 | US5620893 Microbial mediated method for soil and water treatment |
| 04/15/1997 | US5620891 Feeding microorganisms in biofilm supported on bed of particulate manner with uniform flow of liquid feed stream and countercurrent flow of respiratory air, periodically pulsing bed with pressurized air to disrupt and rearrange bed |
| 04/15/1997 | US5620602 Method and apparatus for aerobic digestion of organic waste |
| 04/12/1997 | CA2160311A1 Method of extracting light volatile solvents from a gaseous effluent by wet-scrubbing a gaseous effluent and biomethanation of the solvent-rich liquid |
| 04/10/1997 | WO1997012965A1 Porous polymeric biosupports and their use in the biotreatment of aqueous waste streams |
| 04/10/1997 | WO1997012840A1 Method and device for controlling a device for purifying waste water |
| 04/10/1997 | DE19624268A1 Gas generator has several chambers linked via open aperture to common gas chamber |
| 04/10/1997 | DE19608319C1 Novel bacterial strain Comamonas acidovorans P4a (DSM 10574) |
| 04/09/1997 | EP0767144A1 Mini trickling filter for aerobic treatment of biological degradable waste water |
| 04/09/1997 | EP0766651A1 Controlled denitrification process and system |
| 04/09/1997 | EP0766650A1 Anaerobic removal of sulphur compounds from waste water |
| 04/09/1997 | EP0648133A4 Stabilization of biowastes. |
| 04/09/1997 | CN2251557Y Combined high efficiency anaerobic fermentation tank |
| 04/09/1997 | CN1146979A Apparatus and method for purifying polluted water |
| 04/09/1997 | CN1146978A Method for making three-D filler |
| 04/09/1997 | CN1146977A Water treatment method and apparatus for treating waste water by using ion exchange resin |
| 04/08/1997 | US5618727 Washing soil with biodegradable surfactant to solubilize chlorinated biphenyl, removing effluent to bioreactor having inert substrate, inoculating with microbial strain which degrades both surfactant and contaminants, removing substrate |
| 04/08/1997 | US5618431 Placing in treating tank granular floating filter medium, allowing wastewater to flow through, separating and removing excess sludge by discharging specified amount of water from below filter layer in specified time |
| 04/08/1997 | US5618430 Contacting fluid with reaction particles that are in suspension |
| 04/08/1997 | US5618429 Method for reducing slime and film formation in plants in which the water of paper and pulp machines is circulated and in plants in which cooling water is circulated |
| 04/08/1997 | US5618427 Using mixture of fibrous organic material and metal particles; anaerobic process |
| 04/08/1997 | US5618414 Treatment system for treating waste water |
| 04/08/1997 | US5618413 Ecological fluidized bed system |
| 04/08/1997 | US5618412 Fixed-bed bioreactor and carrier body for purifying fluids |
| 04/08/1997 | US5618411 Fluidized-bed fermenter |
| 04/08/1997 | US5618329 Bioremediation of hydrocarbon contaminated soils and water |
| 04/08/1997 | CA2107762C Amoebae/bacteria consortia and uses for degrading wastes and contaminants |
| 04/03/1997 | WO1997011915A1 A method and apparatus for maintaining solids in suspension in a liquid |
| 04/03/1997 | DE19602385C1 Batch treatment of waste water |
| 04/03/1997 | DE19538579C1 Device produces bio-gas from organic materials |
| 04/03/1997 | CA2232949A1 A method and apparatus for maintaining solids in suspension in a liquid |
| 04/02/1997 | EP0765293A1 Biological purification device and a method of purifying effluent using said device |
| 04/02/1997 | EP0685083B1 Process for operating a sewage water clarification plant and sewage water clarification plant |
| 04/02/1997 | EP0681561A4 Wastewater treatment process and apparatus. |
| 04/02/1997 | CN2250951Y Suspension biological filling without producing residual sludge |
| 04/02/1997 | CN1146758A Biofilm carrier for water and waste water purification |
| 04/02/1997 | CN1146432A Continuous type air aeration sewage treatment method |
| 04/01/1997 | US5616304 For bioremediation of contaminated sludges, soils |
| 04/01/1997 | US5616288 Aeration apparatus and method of aerating liquids |
| 04/01/1997 | US5616241 Treatment of wastewater and sludges |
| 04/01/1997 | US5616240 Device for sewage clarification |
| 04/01/1997 | US5616162 Biological system for degrading nitroaromatics in water and soils |
| 03/27/1997 | WO1997011034A1 Submersible mixing impeller |
| 03/27/1997 | WO1997011033A2 Small plant for the treatment of waste water, especially domestic waste water |
| 03/26/1997 | EP0764611A2 Small clarification plant for domestic waste waters |
| 03/26/1997 | EP0764139A1 Rotating contactor including cross flow media for the biological treatment of waste water |
| 03/26/1997 | CN2250352Y Biological film purifying device |
| 03/26/1997 | CN2250351Y Wave silk cylindrical filler |
| 03/26/1997 | CN1146169A Process for treatment of contaminated land |
| 03/26/1997 | CN1146163A Process for treatment of contaminated material |
| 03/26/1997 | CN1146162A Process for treatment of contaminated material |
| 03/26/1997 | CN1145880A Waste-water treating process for synthetic rubber production |
| 03/26/1997 | CA2159053A1 Method and apparatus for sewage treatment |
| 03/25/1997 | US5614410 Biodegradation |
| 03/25/1997 | US5614102 Method for purifying sewage |
| 03/25/1997 | US5614098 Nocardia foaming controlling method of waste water treatment |