| Patents for C02F 3 - Biological treatment of water, waste water, or sewage (46,453) |
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| 08/31/1994 | EP0567601B1 Process and device for purifying sewage |
| 08/31/1994 | CN1091405A Method and apparatus for disposal and treatment of waste |
| 08/31/1994 | CN1091398A Purifying pool for removal of suspended particles from waste water |
| 08/30/1994 | US5342778 Microorganism belonging to the genus flavobacterium designated ferm BP-4010 |
| 08/30/1994 | US5342769 Dechlorination of tetrachloroethylene and trichloroethylene |
| 08/30/1994 | US5342525 Clean-up of natural bodies of water through the use of flocculation-microorganism composition including amine-substituted clay flocculation agents |
| 08/30/1994 | US5342524 Performance of anaerobic digesters |
| 08/30/1994 | US5342523 Miscellaneous drain water purifying method and miscellaneous drain water pruifying device |
| 08/30/1994 | US5342522 Using three types of biomass to remove phosphate, reduce oxygen demand, nitrify, denitrify |
| 08/30/1994 | US5342516 Biological waste conversion system |
| 08/30/1994 | US5342512 Floating aquatic plant treatment system with porous system |
| 08/26/1994 | CA2116509A1 Biomass growth control apparatus for fluid bed biological reactor |
| 08/25/1994 | CA2116056A1 Method and device for controlled motion of water in water basins |
| 08/24/1994 | EP0611729A1 Method for biodegrading trichloroethylene and method for biodegrading chlorinated organic compound by microorganisms |
| 08/24/1994 | EP0611728A1 Installation and process for biological waste water purification |
| 08/24/1994 | EP0611364A1 Method and apparatus for removing manganese from water. |
| 08/24/1994 | CN2175226Y Rotating brush type aerator |
| 08/23/1994 | US5340483 Purification a mixture by enzymatical oxidation a phenolic compound with tyrosinas to a compound which can be adsorbed by chitosan |
| 08/23/1994 | US5340376 Controlled-release microbe nutrients and method for bioremediation |
| 08/23/1994 | CA2000982C Process for high-load treatment of carbohydrate-containing waste water |
| 08/18/1994 | WO1994018312A1 Microbial degradation of indigo and indigo carmine |
| 08/18/1994 | WO1994018142A1 Filtering plant, method and filter for purifying aqueous effluents |
| 08/18/1994 | WO1994018132A1 Strains of acinetobacter species (bicoccum), arthrobacter species and rhodococcus species and a process using the said strains for the biological treatment of oil pollution |
| 08/18/1994 | WO1994018131A1 Reactor for biological sewage purification |
| 08/18/1994 | WO1994018130A1 Method and apparatus for biological activation waste water treatment |
| 08/18/1994 | WO1994018129A1 Wastewater treatment process and apparatus |
| 08/18/1994 | DE4324502A1 Oxidatives Abfallbehandlungsverfahren Oxidative waste treatment processes |
| 08/18/1994 | DE4304446A1 Process for separating off heavy metals |
| 08/18/1994 | CA2155754A1 Method and apparatus for biological activation waste water treatment |
| 08/17/1994 | EP0611254A1 Device for the subdivision of liquid-filled tanks of sewage treatment works |
| 08/17/1994 | EP0610860A2 Monitoring hydraulic characteristics of raw and waste water treatment operations |
| 08/16/1994 | US5338452 High rate anaerobic reactor for primary treatment of high strength wastewater |
| 08/16/1994 | US5338447 Bioreactor |
| 08/16/1994 | US5338445 Module for a reactor for anaerobic waste water treatment |
| 08/16/1994 | US5337516 Treatment of polluted water using wetland plants in a floating habitat |
| 08/11/1994 | DE4303924A1 Process and equipment for operating an inflow structure for a biological effluent treatment plant running on pure oxygen |
| 08/10/1994 | EP0609896A1 Floating water purification device and water purification method |
| 08/10/1994 | EP0609702A1 Method of and apparatus for reducing iron fouling in groundwater treatment system |
| 08/10/1994 | EP0609641A1 Apparatus and process for advanced purification of effluent water from a biological sewage treatment plomb |
| 08/10/1994 | EP0609399A1 Bio-slurry reaction system and process for hazardous waste treatment |
| 08/10/1994 | EP0575456B1 Method for the treatment of sewage of animal breeding |
| 08/10/1994 | EP0550455B1 Process for purifying water |
| 08/10/1994 | CN1090557A Facultative method for treating waste water containing pig excrement |
| 08/10/1994 | CN1090556A Wasterwater treatment process and apparatus |
| 08/09/1994 | US5336413 Process and apparatus for the purification of water |
| 08/09/1994 | US5336402 Sewage treatment apparatus |
| 08/09/1994 | US5336399 Apparatus for purifying and activating water |
| 08/09/1994 | CA1331407C Sewage treatment plant |
| 08/09/1994 | CA1331406C Biological purification of waste waters |
| 08/05/1994 | CA2113773A1 Method of and apparatus for reducing iron fouling in groundwater treatment systems |
| 08/04/1994 | WO1994016999A1 Secondary sewage treatment system |
| 08/04/1994 | WO1994016794A1 Basin for eliminating floating particles from sewage water |
| 08/04/1994 | DE4341591A1 Natural biological waste water treatment |
| 08/04/1994 | DE4302740A1 Biological waste disposal process with electricity generation |
| 08/04/1994 | CA2131180A1 Secondary sewage treatment system |
| 08/03/1994 | EP0428583B1 Water purification system and apparatus |
| 08/02/1994 | US5334533 Oil contamination clean-up by use of microbes and air |
| 08/02/1994 | US5334313 Reduction of acrylonitrile in wastewater from the production of ABS plastic |
| 08/02/1994 | US5334312 Use of bicarbonates in the biodegradation of hydrocarbon contaminants |
| 08/02/1994 | CA1331224C Orbal wastewater treatment process |
| 07/28/1994 | DE4400612A1 Gravitational separator, especially for waste water containing oil or oil sludge |
| 07/27/1994 | EP0608200A1 Wastewater treatment |
| 07/27/1994 | EP0608088A1 Treatment of water, sewage and like waste liquids |
| 07/27/1994 | EP0607998A2 Chromatographic adsorbent particles, methods of their preparation, and their use as a solid phase matrix in a fluid bed reactor |
| 07/27/1994 | EP0607983A2 Bacteria supporting medium, especially useful for pretreatment of waste water |
| 07/27/1994 | EP0607636A2 Activated carbon containing support for bacterie and microorganisms useful in the biotreatment of aqueous waste streams |
| 07/27/1994 | EP0483312B1 Process for eliminating nitrates and phosphates in the biological purification of waste water |
| 07/27/1994 | CN1089921A Method for treatment of alkaline straw pulp black liquid |
| 07/26/1994 | US5332534 Process and system for increasing the gas uptake by a liquid being aerated |
| 07/26/1994 | US5332502 Wastewater treatment |
| 07/26/1994 | CA2110460A1 Enzyme treatment for industrial slime control |
| 07/23/1994 | CA2087893A1 Organic halide reduction process |
| 07/21/1994 | WO1994016056A1 Compounds and methods for generating oxygen and free radicals used in general oxidation and reduction reactions |
| 07/21/1994 | WO1994015879A1 Microbially mediated degradation of nitrogen-containing phenol compounds |
| 07/21/1994 | WO1994015878A1 Method for removing hydrogen sulphide from oil-containing water and equipment therefor |
| 07/21/1994 | WO1994015730A1 Reactor for purifying contaminated solids |
| 07/21/1994 | DE4301394A1 Removal of heavy metals from aq. media |
| 07/21/1994 | CA2152797A1 Method for removing hydrogen sulphide from oil-containing water and equipment therefor |
| 07/20/1994 | EP0607096A1 Process and apparatus for biological treatment of polluted water, sludges and deposits |
| 07/20/1994 | EP0606432A1 A reactor. |
| 07/20/1994 | CN1089658A Ultra-voilet method for quick determination of BOD value with aeration |
| 07/20/1994 | CN1089579A Iron method for preptreatment for marsh gas fermentation of molasses containing waste water |
| 07/20/1994 | CN1025492C Oxygen-free fermentor |
| 07/20/1994 | CN1025491C Apparatus of anerobic fluidized bed |
| 07/19/1994 | US5330653 Method for the reduction of hydrogen sulfide in sewage treatment plants |
| 07/19/1994 | US5330652 Inhibiting clogging of fluid distribution network of reactor by providing a column of fluid connected to and extending above network and higher than fluid level in reactor, flowing column of fluid into network when normal flow thereto stops |
| 07/19/1994 | US5330651 Treatment of contaminated agricultural run-off |
| 07/19/1994 | US5330639 Mobile water agitating and aerating apparatus |
| 07/14/1994 | DE4400613A1 Oil and oil sludge separator from waste water |
| 07/14/1994 | DE4307584A1 Compost waste water cleaning |
| 07/13/1994 | EP0605675A1 Process for lowering the phosphorus content of waste water |
| 07/13/1994 | EP0605520A1 Biological wastewater treatment process |
| 07/13/1994 | EP0573626A4 A reactor |
| 07/13/1994 | EP0477338B1 Process for the treatment of water containing sulphur compounds |
| 07/13/1994 | CN2171598Y Electric aeration apparatus |
| 07/13/1994 | CN2171597Y Folding aeration apparatus |
| 07/12/1994 | US5328702 Method for preparing a solution containing water-soluble minerals |
| 07/12/1994 | US5328601 Apparatus for in place gas cleaning of diffusion elements |
| 07/12/1994 | CA1330671C Aeration device with a protection skirt |
| 07/12/1994 | CA1330670C Sewage sludge treatment with gas injection |