| Patents for C02F 3 - Biological treatment of water, waste water, or sewage (46,453) |
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| 05/31/1995 | EP0655420A1 Water treatment method and water treatment apparatus |
| 05/31/1995 | EP0655415A1 Device for preparation and supply of hexagonal water |
| 05/31/1995 | CN2199202Y Mid-temp decomposer |
| 05/31/1995 | CN2199200Y Treater for slaughtering waste water |
| 05/31/1995 | CN2199199Y Springhole aerating tube |
| 05/31/1995 | CN2199198Y Lifting aerator |
| 05/30/1995 | US5420035 Bacteria isolated from amoebae/bacteria consortium |
| 05/30/1995 | US5419833 Apparatus for treatment of wastewater |
| 05/30/1995 | US5419831 Rotating biological aquarium filter system |
| 05/30/1995 | CA2083518C Method of pre-treating peat for use in biofilters for wastewater treatment and use thereof |
| 05/26/1995 | WO1995013990A1 Methods and apparatus for using micro-organisms to treat organic material found in waste water |
| 05/24/1995 | EP0654015A1 Process and device for the biological treatment of organically polluted waste water and organic waste. |
| 05/24/1995 | CN2198270Y Biological purifying device for waste water |
| 05/24/1995 | CN2198269Y Film oxidizing waste water treating system |
| 05/23/1995 | US5418166 Aerating yeasts so that they consume excess carbon substrate |
| 05/23/1995 | US5418161 Microbial degradation of indigo and indigo carmine with bacteria strain |
| 05/23/1995 | CA1335665C Bioadsorption composition, process for production thereof and process for use thereof |
| 05/18/1995 | WO1995013246A1 System and method for treatment of polluted water |
| 05/18/1995 | DE4338491A1 Process applies electrical voltage to macromolecules and/or microorganisms in organic effluent |
| 05/18/1995 | DE4033372A1 Purifying heavily contaminated waste water freed from solids by anaerobic fermentation |
| 05/18/1995 | CA2176260A1 System and method for treatment of polluted water |
| 05/17/1995 | EP0653380A1 Oxygenation device for water treatment plants |
| 05/17/1995 | EP0652853A1 Treatment of sludge |
| 05/17/1995 | EP0652851A1 Electrochemical treatment process and device for calcium- and/or magnesium-containing water or waste water |
| 05/11/1995 | DE4438198A1 Device for the biological cleaning (purification) of air and/or water |
| 05/11/1995 | DE4422017A1 Process for stabilising the denitrification in biological sewage treatment plants by used motor vehicle radiator fluid |
| 05/11/1995 | DE4337625A1 Process and plant for the biological purification of waste water |
| 05/10/1995 | EP0652183A1 Installation and process for treating organic and inorganic matter containing waste water |
| 05/10/1995 | EP0318529B1 Process for the purification of waste water |
| 05/10/1995 | CN1102402A Photocatalyst and process for purifying water with same |
| 05/09/1995 | US5413933 Microorganisms and methods for degrading plant cell walls and complex hydrocarbons |
| 05/09/1995 | US5413872 Filling member |
| 05/09/1995 | US5413765 Removal of contaminants from gas or liquid stream |
| 05/09/1995 | US5413749 Process of making beads for a liquid purification bed |
| 05/09/1995 | US5413713 Method for increasing the rate of anaerobic bioremediation in a bioreactor |
| 05/04/1995 | WO1995011744A1 Distributor element |
| 05/04/1995 | WO1995011736A1 Method and apparatus for recovering water from a sewer main |
| 05/04/1995 | DE4337091A1 Method for operating a water aeration system and apparatus, in particular for carrying out the method |
| 05/03/1995 | EP0650932A1 Device for the treatment of waste water |
| 05/03/1995 | EP0650931A2 Method for preventing activated sludge from losing its settling ability |
| 05/03/1995 | EP0650519A1 Process for modulating the concentration of dissolved gases in liquid media |
| 05/03/1995 | CN2196112Y Filler for waste water biochemical processing |
| 05/02/1995 | US5411666 Methods for removing biofilm from or preventing buildup thereof on surfaces in industrial water systems |
| 05/02/1995 | US5411665 Coalescing, oil metabolizing microorganisms |
| 05/02/1995 | US5411664 Method for dehalogenation and degradation of halogenated organic contaminants |
| 05/02/1995 | US5411660 Apparatus for dissolving gas in liquid including pressurized bubble contactor in sidestream |
| 05/02/1995 | US5410925 Method of making an aerator membrane |
| 04/27/1995 | WO1995011201A1 Waste water treatment plant and method for use therein |
| 04/27/1995 | WO1995011200A1 Excreta deodorization method and apparatus |
| 04/27/1995 | CA2174227A1 Excreta deodorization method and apparatus |
| 04/26/1995 | EP0649819A1 Process for purification of biologic waste waters |
| 04/26/1995 | EP0649389A1 Fluid diffuser |
| 04/26/1995 | EP0649338A1 Device for introducing a gas into a liquid |
| 04/26/1995 | EP0463057B1 Floating aquatic plant water treatment system |
| 04/26/1995 | CN2195545Y Anaerobic and aerobic integral purifier for sewage |
| 04/25/1995 | US5409610 Method for anaerobic sludge digestion |
| 04/25/1995 | US5409601 Floating aquatic plant treatment system |
| 04/25/1995 | US5409508 Means and method for enhancing plant growth under field conditions |
| 04/20/1995 | DE4436524A1 Reactor for chemically treating water |
| 04/20/1995 | DE4407734C1 Process for cleaning and reusing surfactant-containing waste waters |
| 04/20/1995 | DE4335326A1 Enzymatic method for rendering aqueous liquids anaerobic |
| 04/19/1995 | EP0648192A1 A method of obtaining lead and organolead from contaminated media using metal accumulating plants |
| 04/19/1995 | EP0648191A1 Reactor for the biological treatment of water. |
| 04/19/1995 | EP0648133A1 Stabilization of biowastes |
| 04/19/1995 | CN1101628A Slurry acidifying and hydrolyzing three phase biological treatment method at normal at mospheric temperature |
| 04/19/1995 | CN1101627A Strain for treating waste water in making paper and its culturing method |
| 04/18/1995 | US5407578 Using a rotating biological contactor and discharging into humus tank |
| 04/18/1995 | US5407577 Biological process to remove color from paper mill wastewater |
| 04/18/1995 | US5407576 Process for the purification of waste water |
| 04/18/1995 | US5407566 Apparatus for disposing of waste water |
| 04/18/1995 | US5407564 Closed loop liquid treatment and recycling system |
| 04/18/1995 | US5407470 Biological air filter |
| 04/13/1995 | WO1995010005A1 Diffuser conduit joint |
| 04/13/1995 | WO1995009819A1 Fluid diffuser |
| 04/13/1995 | DE4409884C1 Process for upstream denitrification in waste water pond systems |
| 04/13/1995 | DE4332815A1 Sewage treatment plant operating by the SBR principle |
| 04/12/1995 | EP0647605A1 Process of treating biologically decomposable materials |
| 04/12/1995 | EP0632730A4 Use of immobilized film reactor. |
| 04/12/1995 | CN2194355Y Sewage treatment equipment |
| 04/11/1995 | US5405532 Neutralization and biological purification; aftertreatment by nanofiltration and oxidation |
| 04/11/1995 | US5405531 Method for reducing the amount of and preventing the formation of hydrogen sulfide in an aqueous system |
| 04/06/1995 | WO1995009130A1 Method and system for treatment of water and wastewater |
| 04/06/1995 | WO1995009038A1 Method and device for slow filtration of raw water |
| 04/06/1995 | DE4403454C1 Process and apparatus for treating surface water or the like |
| 04/06/1995 | CA2150101A1 Method and system for treatment of water and wastewater |
| 04/05/1995 | EP0646549A1 Process for treating industrial wastewater with flocculants constituted by nitrates or basic nitrates of trivalent metals |
| 04/05/1995 | EP0646547A2 Process for treatment of biogenic residual solid matter |
| 04/05/1995 | EP0568599B1 Method for avoiding pitch troubles by use of thermostable lipase |
| 04/04/1995 | US5403809 Macroporous |
| 04/04/1995 | US5403799 Process upset-resistant inorganic supports for bioremediation |
| 04/04/1995 | US5403488 Aerobic incubation of sludge sample with nitrate or ammonium substrate, then measurement of decrease in nitrate or ammonium concentration after timed intervals to determine best ph, temperature and salt concentrations for water purification |
| 04/04/1995 | US5403487 Process for biochemical oxidation of ultra-toxic wastewater in a packed bed bioreactor |
| 04/04/1995 | US5403450 Method of water purification |
| 04/04/1995 | US5403151 Low pressure process for entraining gas into liquid solution and pump therefore |
| 03/30/1995 | WO1995008523A1 Improvements in bioremediation of hydrocarbon contaminated soils and water |
| 03/30/1995 | WO1995008513A1 Biocomposite comprising a microorganism and an additive in a formulation matrix for bioremediation and pollution control |
| 03/30/1995 | WO1995008512A1 Rotating biological filter system |
| 03/30/1995 | DE4333176A1 Fluidised-bed reactor for the anaerobic purification of waste water |
| 03/30/1995 | DE4333175A1 Fluidised-bed reactor for the aerobic purification of waste water |
| 03/29/1995 | EP0645347A1 Process and apparatus for biological treatment of aqueous organic wastes |