| Patents for C02F 3 - Biological treatment of water, waste water, or sewage (46,453) |
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| 10/29/1985 | US4549969 Porous molding containing catalyst |
| 10/29/1985 | US4549962 Rotating biological contactor |
| 10/23/1985 | EP0159298A1 Wastewater treatment method |
| 10/23/1985 | EP0159246A1 Process and plant for treating waste water resulting from the fabrication of sauerkraut |
| 10/23/1985 | EP0159054A1 A process for producing methane from solid vegetable material |
| 10/23/1985 | EP0159008A1 Method for minimizing diurnal swing in phosphorus content of effluent streams from wastewater treating plants |
| 10/22/1985 | US4548715 Process for aeration of effluents in equalizing and reservoir basins |
| 10/22/1985 | US4548712 Conservation of momentum in a barrier oxidation ditch |
| 10/16/1985 | EP0158504A2 Liquid treatment apparatus |
| 10/16/1985 | EP0158048A2 Mixing systems |
| 10/10/1985 | WO1985004390A1 Process and equipment for removal of suspended material, biogenetic nutrients and dissolved metal compounds from sewage contaminated with organic and/or inorganic substances |
| 10/10/1985 | WO1985004306A1 Filter device for aquarium |
| 10/09/1985 | EP0157317A2 Process and apparatus for the aerobic biological purification of waste water |
| 10/09/1985 | EP0156866A1 Anaerobic fermenter |
| 10/08/1985 | US4545909 Growth of biomass |
| 10/08/1985 | US4545907 Treatment of waste water or sewage |
| 10/02/1985 | EP0155960A1 Anaerobic fermentation process |
| 10/01/1985 | US4544381 Biodegradation |
| 10/01/1985 | CA1194624A1 Biological sewage treatment apparatus |
| 10/01/1985 | CA1194623A1 Method and apparatus for treating organic wastewater |
| 09/25/1985 | EP0155669A2 Porous inorganic carriers loaded with micro-organisms, process for immobilizing micro-organisms and carriers suited therefor |
| 09/25/1985 | EP0054021B1 Rotating biological contactor |
| 09/24/1985 | US4543185 Conservation of momentum in a barrier oxidation ditch |
| 09/18/1985 | EP0154915A1 Process and apparatus for the biological purification of waste water |
| 09/17/1985 | US4541928 Waste water |
| 09/11/1985 | EP0154334A2 Process for carrying out reactions and mass transfer processes in heterogeous fluid systems |
| 09/11/1985 | EP0154105A1 A process for decreasing the nitrate content in water |
| 09/10/1985 | US4540528 Apparatus for mixing gas and liquid |
| 09/10/1985 | US4540491 Method of and apparatus for the mechanical-biological treatment of sewage |
| 09/03/1985 | US4539112 Horizontal-axis aerator for purification of waste water |
| 09/03/1985 | US4539110 Liquid aerator |
| 08/29/1985 | WO1985003695A1 Process and plant for the anaerobic treatment of organic substrates |
| 08/28/1985 | EP0153299A1 Process and plant for the anaerobic treatment of organic substrates |
| 08/28/1985 | EP0153297A1 Apparatus for the treatment of organic waste substrates in a solid and dissolved form and for the simultaneous production of methane |
| 08/28/1985 | EP0153061A1 Digestor tanks |
| 08/28/1985 | EP0152618A2 Water treatment method and apparatus |
| 08/27/1985 | US4537682 Activated sludge wastewater treating process |
| 08/27/1985 | US4537679 Aeration pumping-activated sludge processes |
| 08/27/1985 | US4537678 Waste water treatment |
| 08/27/1985 | CA1192383A1 Device and method for forming a fluidized bed |
| 08/21/1985 | EP0152202A2 Dissolving gas in a liquid |
| 08/21/1985 | EP0151937A2 Process for the preparation of foam containing polyurethane (urea) compositions, foam contaning polyurethane (urea) compositions and their application |
| 08/21/1985 | EP0151852A2 Filter |
| 08/14/1985 | EP0151434A1 Method of and apparatus for treating and breaking up a liquid with the help of centripetal force |
| 08/13/1985 | US4535061 Bacteria capable of dissimilation of environmentally persistent chemical compounds |
| 08/13/1985 | US4534914 Method and apparatus for producing vortex rings of a gas in a liquid |
| 08/13/1985 | US4534864 Anaerobic fermentation in a fluidized bed, degassing and recoverin |
| 08/13/1985 | US4534862 Apparatus for flotation |
| 08/07/1985 | EP0150951A1 Aerobic digestion of sludge |
| 08/07/1985 | EP0150747A2 The use of hydrophilic, highly filled polyurethanes in biological waste water purification |
| 08/06/1985 | US4533632 Conversion to deacetyl cephalosporin c by an acetylesterase enzyme |
| 08/06/1985 | US4533470 Apparatus for treating liquids |
| 07/30/1985 | US4532042 Feeding aqueous solution to fixed bed reactor containing microorganisms, discharging treated material, recycling portion by mixing with feed, monitoring pH to maintain |
| 07/30/1985 | US4532038 Flow control apparatus for aerobic sewage treatment |
| 07/30/1985 | US4532035 Rotating biological contactor for the biological purification of waste water |
| 07/30/1985 | CA1191287A1 Process and device for uprating the utilization rate of gas dissolved in a liquid |
| 07/30/1985 | CA1191286A1 Arrangement for removal of sludge separated by flotation at biological activating cleaning of waste waters using fluid filtration |
| 07/24/1985 | EP0149151A1 Apparatus for accelerating the reaction between two media reacting in a fluidised bed |
| 07/24/1985 | EP0148940A1 Method and apparatus for on site treatment of waste water with radiation activated fluid |
| 07/24/1985 | EP0148912A1 Plant for prepurifying solid waste in solution, containing organic material, and simultaneous production of methane |
| 07/23/1985 | US4530763 Incubating bacteria in nutrient solution; supplying to waste fluids |
| 07/23/1985 | US4530762 Anaerobic reactor |
| 07/18/1985 | WO1985003067A1 A process for decreasing the nitrate content in water |
| 07/16/1985 | US4529701 Inorganic pyrophosphate containing compound |
| 07/16/1985 | US4529513 Anaerobic treatment for sewage |
| 07/10/1985 | EP0147721A2 Process for separating gaseous organic noxious material, even present as traces from exhaust gases, by biological oxidation using bacteria |
| 07/09/1985 | CA1190333A1 Method and flotation machine for concentrating ores of non-ferrous metals |
| 07/03/1985 | EP0147367A2 Waste water aeration system, process for its operation and use |
| 07/03/1985 | EP0147108A2 Improved sewage sludge treatment apparatus and process |
| 07/02/1985 | US4526685 Waste water treatment plant |
| 06/26/1985 | EP0145853A1 Packing for trickling filters for biological waste water purification |
| 06/26/1985 | EP0145792A1 Anaerobic digestion of organic waste for biogas production |
| 06/25/1985 | USRE31924 Composition and method for stimulation of bacteria |
| 06/25/1985 | US4525277 Method for cleaning a septic tank |
| 06/19/1985 | EP0145647A1 Device and process for fine-bubble aeration and/or mixing of a liquid |
| 06/19/1985 | EP0145612A1 Fluidised bed reactor |
| 06/18/1985 | US4524139 Process for the compressive regeneration of flexible, porous materials |
| 06/12/1985 | EP0144305A1 Process and apparatus for the treatment of the thermal decomposition of organic substances |
| 06/12/1985 | EP0144279A1 Staged anaerobic reactor |
| 06/12/1985 | EP0144213A2 Digester and its use |
| 06/11/1985 | US4522766 Gas-liquid contacting device |
| 06/11/1985 | US4522723 Reduction of sulfate ions to sulfides with bacteria |
| 06/11/1985 | US4522722 Spitting recycled sludge stream introducing smaller portion first, ten larger portion |
| 06/11/1985 | US4522721 Fermentation by anaerobic bacteria |
| 06/11/1985 | US4522714 A rotary biological contactor in a tank with an annular plastic media; wastes |
| 06/11/1985 | US4522151 Aerator |
| 06/11/1985 | CA1188829A1 Process and installation for the treatments of sludge issued from a wastewater purification plant |
| 06/06/1985 | WO1985002391A1 Method and arrangement for growing microorganisms and causing contact between gas and/or liquid medium and contact elements |
| 06/05/1985 | EP0143149A1 Method for the reduction of the H2S content in processes of anaerobic decomposition, especially in sludge digestion |
| 06/04/1985 | US4521515 Pseudomonas strain |
| 06/04/1985 | US4521349 Fluid diffuser for gases and liquids |
| 06/04/1985 | US4521311 Activated sludge system with integrated regenerator |
| 06/04/1985 | US4521310 Gas blower, reactor for conversion to biogas |
| 06/04/1985 | US4521307 Conservation of momentum in a barrier oxidation ditch |
| 06/04/1985 | CA1188246A1 Immobilized microbe recycle apparatus |
| 06/04/1985 | CA1188241A1 Oil slick dispersants using diguandinium salt |
| 05/29/1985 | EP0142873A1 Process and apparatus for anaerobic fermentation of solid wastes in water in two phases |
| 05/29/1985 | EP0142872A1 Method and apparatus for biological treatment of waste gases |
| 05/29/1985 | EP0142720A2 Aeration plant for large stretches of water |
| 05/28/1985 | US4520072 Dissolving a coloring substance in solvent and absorption on carrier |