| Patents for C02F 3 - Biological treatment of water, waste water, or sewage (46,453) |
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| 11/06/1997 | DE19704692A1 Purification of lake and marsh |
| 11/06/1997 | CA2252736A1 Thermophilic methanotrophs for high temperature oxidations |
| 11/05/1997 | EP0804387A1 Process for reducing excessive slime deposits in water circuits |
| 11/05/1997 | EP0804386A1 Apparatus and process for distributed treatment of wastewater |
| 11/05/1997 | EP0628018B1 Method of separating oil from wash water |
| 11/05/1997 | CN1163861A Purifying method and purification system for lakes and marshes |
| 11/04/1997 | US5683951 Water treatment, roasting a ceramic and treatment with microorganisms of bacteria, fungi or yeasts |
| 11/04/1997 | US5683665 Composition and process for cleansing exhaust gas |
| 11/04/1997 | US5683664 Of a deodorizing ceramic obtained by calcining a composition comprising raw ceramic materials and microorganisms and/or culture fluid thereof |
| 11/04/1997 | US5683575 Apparatus for activation of a digesting agent upstream of organic material treatment |
| 11/04/1997 | US5683487 Nutrients with hydrocarbons and sorbitan fatty esters |
| 11/04/1997 | CA2098969C Microbiological method for disposing of organic waste materials |
| 10/30/1997 | WO1997040136A1 Microorganisms that decompose halogenated hydrocarbons and their use |
| 10/30/1997 | WO1997039985A1 Fluid purifying apparatus |
| 10/30/1997 | WO1997039984A1 Subsurface remediation method and apparatus |
| 10/30/1997 | DE19633889C1 Aerobic waste water treatment reactor incorporating air inlet within lower layer |
| 10/29/1997 | EP0803475A1 Aerator |
| 10/29/1997 | EP0537210B1 Continuous rbcod measurement |
| 10/29/1997 | CN2265975Y Dynamic biological ball filler |
| 10/29/1997 | CN1163235A Cage type elastic stereo suspending filler |
| 10/28/1997 | US5681739 Method for in situ or ex situ bioremediation of hexavalent chromium contaminated soils and/or groundwater |
| 10/28/1997 | US5681472 Method and apparatus for separating gaseous bubbles and sand from a liquid flow |
| 10/28/1997 | US5681471 Biological denitrification of water |
| 10/28/1997 | US5681470 Flowing liquid stream loaded with volatile organic solvents to an anaerobic bioreactor containing sealed vessel consisting a biomass having methanogenic bacteria to transform volatiles to methane rich gas and carbon dioxide |
| 10/23/1997 | WO1997038945A1 Anaerobic treatment process |
| 10/23/1997 | WO1997022561A3 Single-tank sewage treatment plant |
| 10/22/1997 | EP0802166A2 Process for treating and purifying industrial waste waters |
| 10/22/1997 | CN2265369Y Elastic ring-shape suspension padding for water treatment |
| 10/22/1997 | CN1162572A Auxiliary for microorgan modification |
| 10/21/1997 | US5679568 Processes for decomposing a pollutant and remedying an environment using Renobacter sp. ferm BP-5353 having dehalogenase activity |
| 10/21/1997 | US5679364 Compositions and methods for reducing the amount of contaminants in aquatic and terrestrial environments |
| 10/21/1997 | US5679257 Industrial waste water treatment |
| 10/21/1997 | US5679253 Removing stream of water from aquarium, directing over rotatable filter body causing it to rotate, alternately exposing portion to water and air to foster growth of aerobic bacteria on surface |
| 10/21/1997 | US5679252 Method for processing organic waste water |
| 10/21/1997 | CA2001540C Application of multiple enzyme blend to control industrial slime |
| 10/16/1997 | WO1997037942A1 Process and device for treatment of water from a biodegradeable process |
| 10/16/1997 | WO1997037941A2 Process for the biological purification of waste water |
| 10/16/1997 | WO1997037940A1 Waste water treatment apparatus |
| 10/16/1997 | DE19614306A1 Treating highly polluted industrial waste water, especially waste tips water |
| 10/16/1997 | DE19614214A1 Verfahren und Vorrichtung zur Aufbereitung von Wasser aus einem biologischen Abbauprozeß Method and apparatus for treatment of water from a biological degradation process |
| 10/16/1997 | CA2224159A1 Process and device for treatment of water from a biodegradeable process |
| 10/15/1997 | EP0801034A2 Anaerobic system for processing waste water |
| 10/15/1997 | EP0801033A2 Apparatus for degrading pollutant, process for purifying contaminated medium and process for degrading pollutant |
| 10/15/1997 | EP0800845A1 Biodegradation of an organic compound and process for upgrading the environment by removing the aforesaid compound |
| 10/15/1997 | EP0800482A1 Method and apparatus for the treatment of concentrated wastewater |
| 10/15/1997 | CN2264739Y Full-automatic water tank filtering purifier |
| 10/14/1997 | US5676890 Aeration device |
| 10/14/1997 | US5676836 Cultivation bed; aquatic plants; microorganisms; decomposition malodorous gas |
| 10/14/1997 | US5676828 Apparatus and method for modifying waste water |
| 10/09/1997 | WO1997037008A1 Means and process for nitrate removal |
| 10/09/1997 | WO1997036832A1 Process for the microbiological purification of slurries containing heavy metals |
| 10/09/1997 | WO1997036830A1 Dual-flow filter for biological effluent purification |
| 10/09/1997 | DE19613717C1 Verfahren zur mikrobiologischen Reinigung von schwermetallhaltigen Schlämmen Methods for the microbiological purification of sludges containing heavy metals |
| 10/09/1997 | DE19613397A1 Verfahren zum biologischen Reinigen von Abwasser A method for the biological purification of waste water |
| 10/09/1997 | DE19613349A1 Waste water aeration unit consoles secured to facing flat concrete walls |
| 10/08/1997 | EP0799799A1 Method and device for purifying protein containing waste water |
| 10/08/1997 | EP0699172B1 Bioreactor for biological treatment of contaminated water |
| 10/08/1997 | EP0640059B1 Biogas reactor |
| 10/07/1997 | US5674399 Sewage treatment method |
| 10/07/1997 | US5674385 Separator for sewage treatment increasing oxidation, aerobic process and bio-denitrification |
| 10/07/1997 | US5674383 Filter for the purification of water |
| 10/07/1997 | CA2143502C Process and device for purifying sewage |
| 10/04/1997 | CA2201835A1 Method and device for purifying protein containing waste water |
| 10/02/1997 | WO1997035809A1 Process for treating sewage with activated sludge and device for implementing it |
| 10/02/1997 | DE19622977C1 Water treatment process with occasional scoop motion reversed |
| 10/01/1997 | EP0797546A1 Settling basin |
| 10/01/1997 | CN2263651Y Effluent disposal oxidation device |
| 09/30/1997 | US5672270 Apparatus for aerobic treatment of waste water |
| 09/30/1997 | CA2020836C Aerobic wastewater treatment with alkalinity control |
| 09/25/1997 | WO1997034840A1 Process and device for fat separation |
| 09/25/1997 | WO1997034839A1 Aeration means for a tank filled with liquid |
| 09/25/1997 | WO1997034837A1 Method and apparatus for treating selenium-containing waste water |
| 09/25/1997 | WO1997034714A1 Method for hyperaccumulation of metals in plant shoots |
| 09/25/1997 | DE19624833C1 Sewage disposal assembly |
| 09/25/1997 | DE19609555A1 Verfahren zum aeroben biologischen Abbau schwer wasserlöslicher Stoffe sowie Mirkoorganismus Stamm IHI-91 A method for aerobic biodegradation of sparingly water supplies as well as microorganism strain IHI-91 |
| 09/25/1997 | CA2249433A1 Method for treating selenium-containing wastewater and apparatus for carrying out the method |
| 09/25/1997 | CA2249397A1 Aeration means for a tank filled with liquid |
| 09/25/1997 | CA2249353A1 Method for hyperaccumulation of metals in plant shoots |
| 09/25/1997 | CA2249198A1 Process and device for fat separation |
| 09/24/1997 | EP0796114A1 Biofilm avoidance and removal process and composition |
| 09/24/1997 | CN1160024A Method for disposal of high concentration organic sewage |
| 09/24/1997 | CN1160023A Compound functional bacteria for treatment of various electroplating wastes |
| 09/24/1997 | CN1160022A Water aerator driven by low-speed motor |
| 09/23/1997 | US5670047 Anaerobic treatment process for the rapid hydrolysis and conversion of organic materials to soluble and gaseous components |
| 09/23/1997 | US5670046 Treatment of nutrient-rich water |
| 09/23/1997 | US5670045 Launder cover for use in a clarifier tank |
| 09/22/1997 | CA2172296A1 Anaerobic process using biofilm with or without filtration |
| 09/18/1997 | WO1997033839A1 Process and device for sewage treatment |
| 09/18/1997 | WO1997033838A1 Process for the aerobic biological break-down of substances having low water-solubility, and a micro-organism of the strain ihi-91 |
| 09/18/1997 | WO1997033837A1 A compound functional bacteria for treating various waste water from electroplating process |
| 09/18/1997 | WO1997033836A1 Method and apparatus for treating water |
| 09/18/1997 | WO1997033835A2 Biodegradable effluent nutrient removal |
| 09/18/1997 | WO1997033834A1 Aerobic long vertical shaft bioreactors |
| 09/18/1997 | WO1997033831A2 Treatment of waste liquor in a vertical shaft bioreactor |
| 09/18/1997 | WO1997033789A1 Off-shore sewage treating and handling apparatus and method |
| 09/18/1997 | WO1997033676A1 Gray water reclamation system |
| 09/18/1997 | DE19610225A1 Process for treating waste containing organic waste |
| 09/18/1997 | DE19610056A1 Integration of bio-gas generation and hydrogen sulphide oxygenation |
| 09/18/1997 | CA2250300A1 Process and apparatus for treating water |
| 09/17/1997 | EP0794927A2 Method and apparatus for sewage water treatment |