| Patents for C02F 3 - Biological treatment of water, waste water, or sewage (46,453) |
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| 08/23/1988 | US4765900 Oxidation, deamination of animal manures |
| 08/23/1988 | US4765807 Mixing with oxygen supersaturated water; non bubbling |
| 08/23/1988 | CA1241129A1 Staged anaerobic reactor |
| 08/18/1988 | DE3703562A1 Apparatus for the restoration or sanitation of waters |
| 08/17/1988 | EP0278745A2 Process for the treatment of waste |
| 08/17/1988 | EP0278296A2 Process for the simultaneous chemical and biological removal of solid and liquid organic waste, and apparatus for performing said process |
| 08/16/1988 | US4764314 Disc type flexible gas permeable membrane; movable check valve to increase flow rate and stop blocking |
| 08/16/1988 | US4764311 Waste removal from seawater aquariums; centrifugal pump |
| 08/16/1988 | US4764053 Method of installing a floatable pump apparatus and an anti-erosion plate in a water treatment basin |
| 08/11/1988 | WO1988005764A1 Centrifugal bio-contactor apparatus |
| 08/11/1988 | DE3702771A1 Apparatus for the restoration or rehabilitation of stagnant waters |
| 08/11/1988 | DE3702425A1 Microbe incubator for regeneration of ailing bodies of water |
| 08/10/1988 | EP0277704A2 Separation of ash from regenerated adsorbent |
| 08/10/1988 | EP0277482A1 Method for rearing plancton and its use |
| 08/09/1988 | US4762612 Anaerobic fluidized bed apparatus |
| 08/09/1988 | CA1240418A1 Method and apparatus for the purification of water and other aqueous liquids |
| 08/03/1988 | EP0276759A1 Aeration device for basins of sewage plants or of sewage treatment plants |
| 08/03/1988 | EP0276729A2 Process for the decomposition of aromatic compounds by Rhodococcus rhodochrous |
| 08/02/1988 | US4761376 Facultatively anaerobic microorganism for degrading toxic waste materials |
| 08/02/1988 | US4761239 Reducing oxygen demand |
| 08/02/1988 | CA1240077A1 Installation for injecting oxygen into liquid media and use of such an installation |
| 07/28/1988 | DE3744599A1 Installation for the decentralised supply to inhabitable buildings and waste disposal from these |
| 07/28/1988 | DE3701346A1 Process for the disposal and use of waste kieselguhr from the beverages industry with the aid of a biological soil/plant filter system |
| 07/27/1988 | EP0275538A2 Method and apparatus for biological purification of wastewater with no excess activated sludge |
| 07/26/1988 | CA1239593A1 Pressure swing adsorption process for supplying oxygen under variable demand conditions |
| 07/20/1988 | EP0274986A1 Waste gas purification process |
| 07/20/1988 | EP0274856A1 Microbial degradation of waste |
| 07/20/1988 | EP0274633A1 Packing for trickling filters for liquid-treatment and process for manufacturing and applying it |
| 07/20/1988 | EP0274587A1 Biotechnological process using immobilised microorganisms |
| 07/20/1988 | EP0274494A1 System for feeding gases to liquids, especially for aerating waste waters |
| 07/19/1988 | US4758453 Textile substrate for bio-transformation and phase separation |
| 07/19/1988 | US4758345 Clostridium under anaerobic condition |
| 07/19/1988 | US4758339 Fermentation section, settler, gas discharging means |
| 07/14/1988 | DE3700038A1 Apparatus serving for the aeration of water |
| 07/14/1988 | DE3644729A1 Construction and function system for clarification plants of sewage and waste water of every type and magnitude, with associated set of construction elements and function elements |
| 07/13/1988 | EP0274083A1 Reactor for flotation or treatment with gases |
| 07/13/1988 | CN85104232B Anaerobic fermentation equipment using stirring apparatus by bioenergy |
| 07/12/1988 | US4756832 Enzymatic process |
| 07/12/1988 | US4756831 Reducing nitrate to gaseous nitrogen by contacting water with biocatalyst containing core of immobilized denitrifying organism cells trapped in ionosphere gel, and surrounded by gel or polymer protective layer |
| 07/06/1988 | EP0273174A1 Process and apparatus for the removal of ammonia from waste water, surface waters or ground water |
| 07/06/1988 | EP0273111A2 Process and installation for the purification of waste containing phosphates, and for the biological elimination of phosphorus |
| 07/06/1988 | EP0273053A1 Sheet for forming twisted surface and production thereof |
| 07/05/1988 | US4755304 Injecting water containing oxygen into recharge means, simultaneously withdrawing water from second adjacent recharge means to create purification zone, withdrawing purified water from supply means |
| 07/05/1988 | US4755296 Integrated biological-adsorption process for treating waste water |
| 06/30/1988 | WO1988004572A1 Fluid treatment process |
| 06/30/1988 | DE3705837C1 Process for microbiological exhaust gas purification |
| 06/29/1988 | EP0272255A1 A contact apparatus |
| 06/28/1988 | CA1238593A1 Microorganisms of the genus pseudomonas and process for the degradation of compounds containing methyl groups in aqueous solutions |
| 06/23/1988 | DE3642419A1 Process for treating a free-flowing mixture containing a liquid phase |
| 06/21/1988 | US4752421 Method of supplying air masses and producing jets of water |
| 06/21/1988 | US4752383 Bubble generator |
| 06/16/1988 | WO1988004282A1 Sludge restructuring and conversion method |
| 06/16/1988 | DE3641542A1 Process and plant for treating organic residues, in particular for waste disposal and waste water purification, producing biogas |
| 06/16/1988 | DE3641260A1 Process and apparatus for the pulsed anaerobic and aerobic treatment of effluent and water |
| 06/15/1988 | EP0270805A2 Bacterial method and compositions for degrading hydrocarbons |
| 06/15/1988 | EP0270640A1 Fish basin for intensive fish-fattening and process for operating such a fish basin. |
| 06/09/1988 | DE3640964A1 Process and apparatus for introducing air and/or oxygen into activation tanks in waste water purification and for aerating lakes, ponds and rivers |
| 06/08/1988 | CN87211323U Flexible pipe for aeration |
| 06/07/1988 | US4749527 Dissolving oxygen in waste water |
| 06/07/1988 | US4749497 Method and apparatus for treatment of acidic water |
| 06/07/1988 | US4749494 Forming liquid containing excess sludge to be digested by aeration; filtration and recycling |
| 06/07/1988 | US4749493 Method and apparatus for oxygenating water |
| 06/07/1988 | US4749491 Microbiological decomposition of chlorinated aliphatic hydrocarbons |
| 06/07/1988 | US4749480 Reaction vessel |
| 06/07/1988 | CA1237831A1 Sidewall mounted separator for removing solids in waste water |
| 06/02/1988 | WO1988003913A1 Method of biological purification of waste water from non-ionogenic surface-active substances |
| 06/01/1988 | DE3637308C1 Nutrient mixture for increasing the rate of biodegradation of mineral oil products and its use |
| 06/01/1988 | CN87207243U Plastic packings for biological fluidized bed and floating filtering pool |
| 05/31/1988 | US4748127 Process for the detection of biodegradable and toxic substances in aqueous solutions |
| 05/31/1988 | CA1237543A1 Device for increasing the oxygen concentration in a subsurface stratum of a thermally stratified body of water |
| 05/26/1988 | DE3639572A1 Method for introducing gas into waste waters |
| 05/25/1988 | EP0268225A2 Process and apparatus for the biological purification of waste water |
| 05/25/1988 | EP0267962A1 Bacterial composition and method for purifying water and soil of oil pollution |
| 05/24/1988 | US4746435 Biochemical process for purifying contaminated water |
| 05/24/1988 | US4746434 Oil extraction |
| 05/24/1988 | US4746433 Biodegradation |
| 05/24/1988 | US4746431 Device for the collection of water in a granular material bed filter |
| 05/19/1988 | WO1988003515A1 Method for water purification |
| 05/19/1988 | WO1988003514A1 High yield air diffuser for tanks used in the aerobic treatment of waste waters |
| 05/19/1988 | DE3711416A1 Process for purifying water and apparatus therefor |
| 05/19/1988 | DE3639473A1 Apparatus for introducing gas into liquids |
| 05/18/1988 | CN87107373A High yield air diffuser for tanks used in the aerobic treatment of waste waters |
| 05/17/1988 | US4745064 Process for the degradation of s-triazine derivatives in aqueous solutions |
| 05/11/1988 | EP0266425A1 Aeration type water treatment plant |
| 05/11/1988 | DE3638301A1 Process for the autotrophic denitrification of water |
| 05/11/1988 | DE3637476A1 Process for the biological purification of waste water |
| 05/11/1988 | DE3637090A1 Process for preventing the formation of bulking sludge or scum in activation plants |
| 05/10/1988 | US4743408 Continuously injecting air into water; activation,purification flotation; fixed nozzle is circular annular gap to accelerate flow |
| 05/10/1988 | US4743405 Apparatus for injecting a gas into a liquid flow |
| 05/10/1988 | US4743367 Contact apparatus |
| 05/10/1988 | CA1236598A1 Integral clarifier |
| 05/10/1988 | CA1236597A1 Method of treating peroxide-containing wastewater |
| 05/10/1988 | CA1236596A1 Method of controlling an anaerobic treatment process |
| 05/05/1988 | DE3636577A1 Water aerator |
| 05/05/1988 | DE3635843A1 Process for separating off ammonia from exhaust air or waste water |
| 05/04/1988 | EP0265442A1 Process and plant for purifying waste water |
| 05/04/1988 | CN87106315A Oscillating propeller type aerator apparatus and methos |
| 05/03/1988 | US4741870 Apparatus for treatment of liquids |
| 05/03/1988 | US4741869 Apparatus for contacting a gas with a liquid, in particular for aerating waste water |
| 05/03/1988 | US4741825 Mobile vortex shield |