| Patents for C02F 3 - Biological treatment of water, waste water, or sewage (46,453) |
|---|
| 12/31/1997 | WO1997049640A1 A reactor for the depuration of polluted waste waters |
| 12/31/1997 | WO1997049639A1 Process for water treatment in a closed circuit with a reactor |
| 12/31/1997 | WO1997049279A1 Automated closed recirculating aquaculture filtration system |
| 12/30/1997 | US5702605 Slime hydrolase producing bacterium and process for producing slime hydrolase |
| 12/30/1997 | US5702604 Water purification |
| 12/30/1997 | US5702594 Apparatus for treatment of waste water and/or exhaust gases containing fluorine and surface active agents |
| 12/30/1997 | US5702593 Stormwater treatment system/apparatus |
| 12/30/1997 | US5702572 Method for treating exhaust gases and foul water |
| 12/30/1997 | US5702079 Bat media support frame apparatus and method |
| 12/30/1997 | CA2136628C Method for aiding microbial degradation of spilled oil |
| 12/30/1997 | CA2091315C Process and apparatus for the purification of water |
| 12/29/1997 | EP0814061A2 Method and apparatus for treating aqueous medium containing organic matter |
| 12/29/1997 | EP0673350B1 Metal accumulation |
| 12/29/1997 | EP0659169B1 Improvements in processes for the alkaline biodegradation of organic impurities |
| 12/24/1997 | WO1997048647A1 Waste water treatment plant |
| 12/24/1997 | CN1168637A Biofilm avoidance and removal process and composition |
| 12/23/1997 | US5700769 Electrone acceptor is 2,2-azino-bis/3-etylbenzothiazoline-6-sulfonate; inhibits the transfer of textile dye from first dyed fabric to second fabric when washed together |
| 12/23/1997 | US5700370 Biological treatment plant controlled by fluorescence sensors |
| 12/23/1997 | CA2090604C Method for purification of waste water |
| 12/18/1997 | WO1997047561A1 Biological process for purifying liquid residues with high contaminating content and/or high toxicity, particularly liquid manures and dregs of oil |
| 12/18/1997 | WO1997047363A1 Biodegradation of metal cyanides |
| 12/18/1997 | DE19640762C1 Treatment of waste water using differentiated internal cycle strategies |
| 12/18/1997 | DE19639267C1 Biorotor for cleaning sewage and standing water |
| 12/18/1997 | DE19631696A1 Apparatus for enriching (waste) water with oxygen@-containing gas |
| 12/17/1997 | EP0812807A2 Process and reactor for continuously microbiologically treating highly loaded wastewater |
| 12/17/1997 | EP0812806A1 Method and device for purifying polluted water |
| 12/17/1997 | EP0560980B1 Membrane bioreactor system for treating synthetic metal-working fluids and oil-based products |
| 12/16/1997 | US5698094 Device for biological treatment of liquid, especially sewage |
| 12/16/1997 | US5698028 Composition and process for improving soil |
| 12/11/1997 | DE19654624C1 Corynebacterium sp. K2-17 |
| 12/10/1997 | EP0810977A1 Lipid material biodecomposition device and method |
| 12/10/1997 | EP0810976A1 Purification system for raw water, in particular for waste water |
| 12/10/1997 | CN2270046Y Buried sewage treatment equipment |
| 12/10/1997 | CN1167447A Activated sludge degassing process and device |
| 12/10/1997 | CN1167098A Method for making fertilizer and forage utilizing black liquor of alkaline method paper making and fermentation device thereof |
| 12/10/1997 | CN1167090A Vertical retained aeration sewage treatment process and device |
| 12/09/1997 | US5696493 Pedestal housing for electric connection panel for sump pump and full septic tank alarm |
| 12/09/1997 | CA2001509C Mixer/aerator for waste water |
| 12/04/1997 | WO1997045375A1 Vertical shaft bioreactor with a divided head tank |
| 12/04/1997 | WO1997045374A1 Wastewater treatment |
| 12/04/1997 | WO1997045372A1 Ultrapurification method and sampler |
| 12/04/1997 | WO1997037941A3 Process for the biological purification of waste water |
| 12/04/1997 | CA2257165A1 Wastewater treatment |
| 12/03/1997 | EP0810182A1 Process for the biodegradation of polychlorobiphenyls and chlorobenzoic acids in contaminated waters |
| 12/03/1997 | EP0810041A2 Method of converting organic wastes to valuable resources |
| 12/03/1997 | EP0809612A1 Method and composition for enhanced bioremediation of petroleum |
| 12/03/1997 | EP0809611A1 Biological water treatment plant for producing drinking water |
| 12/03/1997 | EP0809610A1 Water delivery apparatus |
| 12/03/1997 | EP0809609A1 Composition and method for degradation of nitroaromatic contaminants |
| 12/03/1997 | EP0809608A1 Combined chemical and biological water treatment process |
| 12/03/1997 | EP0809605A1 Method for utilising tyres to clean and/or fertilise water |
| 12/03/1997 | EP0641296B1 Process for degrading organic matter |
| 12/03/1997 | CN1166519A Method for changing organic waste into resources |
| 12/03/1997 | CN1166459A Direct use method of waste water as circular water |
| 12/02/1997 | US5693527 Activation of microorganism by contact with water soluble lignocellulose plant extract to induce expression of enzyme which decomposes di-, trichloroethylene |
| 12/02/1997 | US5693383 Packing material |
| 12/02/1997 | US5693265 Water aerator |
| 12/02/1997 | US5693226 Apparatus for demonstrating a residential point of use water treatment system |
| 11/27/1997 | WO1997044281A1 Biological purification of septic tanks by extender effect |
| 11/27/1997 | DE19634224C1 Waste water treatment plant |
| 11/27/1997 | DE19621172A1 Waste water plant with activated sludge treatment and settling tanks |
| 11/26/1997 | EP0808910A2 Apparatus and method for the generation and use of ferric ions produced by bacteria |
| 11/26/1997 | EP0808805A1 Process and reactor for anaerobic purification of waste water in a sludge-bed |
| 11/26/1997 | EP0808804A2 Distributor for introducing gas into elastic tubes |
| 11/26/1997 | EP0808803A1 Process and device for continuous disintegration of activated sludge |
| 11/26/1997 | EP0609399B1 Bio-slurry reaction system and process for hazardous waste treatment |
| 11/26/1997 | CN2268701Y Sewage treating apparatus of building |
| 11/25/1997 | US5690834 Flotation |
| 11/25/1997 | US5690827 Sewage treatment system using peat and a constructed wetland |
| 11/25/1997 | US5690819 Structure of biochemical filter ball |
| 11/25/1997 | CA2062682C Method and apparatus for anaerobic sludge digestion |
| 11/21/1997 | CA2205151A1 Apparatus and method for the generation and use of ferric ions |
| 11/20/1997 | WO1997043220A1 Clarification plant for water purification |
| 11/20/1997 | WO1997043219A1 Method and device for introducing a gas or gas mixture into a liquid |
| 11/20/1997 | WO1997043218A1 Immobilized cell bioreactor and method of biodegrading pollutants in a fluid |
| 11/20/1997 | WO1997043033A1 Process for the purification of gases containing hydrogen sulphide |
| 11/20/1997 | DE19621156A1 Klärwerk zur Aufbereitung von Wasser Sewage treatment plant for treatment of water |
| 11/20/1997 | CA2255031A1 Immobilized cell bioreactor and method of biodegrading pollutants in a fluid |
| 11/20/1997 | CA2253456A1 Clarification plant for water purification |
| 11/19/1997 | EP0807089A1 Device and process for thickening and conveying waste water sludges |
| 11/19/1997 | EP0807088A1 Process for aerobic treatment of waste water |
| 11/19/1997 | EP0689521A4 Compact clarifier system for municipal waste water treatment |
| 11/19/1997 | CN2268027Y Biocarbon fluidized-bed reactor |
| 11/18/1997 | US5688400 Waste water treatment plant |
| 11/18/1997 | CA2087580C Liquid treatment method and apparatus |
| 11/13/1997 | DE19715680A1 Waste water treatment plant |
| 11/13/1997 | DE19640347A1 Water filter assembly incorporates inner core surrounded by finer-grained outer ring |
| 11/13/1997 | DE19620158A1 Biological waste water treatment |
| 11/13/1997 | DE19617331A1 Biological process for removing nitrogen compounds from e.g. sewage plant effluent |
| 11/12/1997 | EP0806400A1 Bent aerator |
| 11/12/1997 | EP0642373B1 Method and apparatus for separating gaseous bubbles and sand fro m a liquid flow |
| 11/12/1997 | CN2267243Y Water distribution device for anaerobic digestion tank |
| 11/11/1997 | US5686297 Enzyme and amine oxide surfactant |
| 11/11/1997 | US5686293 Sulfide-oxidizing bacteria |
| 11/06/1997 | WO1997041246A1 Thermophilic methanotrophs for high temperature oxidations |
| 11/06/1997 | WO1997041216A1 Microorganism carrier and process for production thereof |
| 11/06/1997 | WO1997041074A1 Process and apparatus for the treatment of flowable waste |
| 11/06/1997 | WO1997033835A3 Biodegradable effluent nutrient removal |
| 11/06/1997 | WO1997033831A3 Treatment of waste liquor in a vertical shaft bioreactor |
| 11/06/1997 | DE19708181A1 Microbial decomposition |