| Patents for C02F 3 - Biological treatment of water, waste water, or sewage (46,453) |
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| 03/02/1989 | DE3727969A1 Facility for anaerobic waste water purification |
| 03/01/1989 | EP0304734A1 Apparatus for the anaerobic treatment of a biomass |
| 03/01/1989 | EP0304502A1 Process for raising the oxygen concentration in liquids, mixtures of liquids and the like |
| 02/28/1989 | US4808041 Channel for holding liquid material |
| 02/28/1989 | US4808040 Submersible mixer support system with removable guide bars |
| 02/23/1989 | WO1989001457A1 Process and device for heating organic effluents by digestion in an activated conditioned medium |
| 02/23/1989 | DE3727269A1 Gas feed and distribution device for a gas purification plant or digestion plant |
| 02/23/1989 | DE3727108A1 Process and apparatus for the bacterial denitrification of water, in particular drinking water |
| 02/23/1989 | DE3727096A1 Circulation apparatus for a sludge stacking silo |
| 02/23/1989 | DE3726949A1 Process and arrangement for operating fixed bed reactors with packed biomass-colonised carriers |
| 02/22/1989 | EP0304143A1 Water-absorptive resin for microbial carrier |
| 02/21/1989 | US4806251 Oscillating propeller type aerator apparatus and method |
| 02/21/1989 | US4806148 Apparatus for biological treatment of waste gases |
| 02/21/1989 | CA1250377A1 Biological treatment of sewage |
| 02/15/1989 | EP0303149A2 Fixed-bed loop reactor for an ascending flow |
| 02/15/1989 | CN2032614U Combined filling |
| 02/15/1989 | CN2032613U Comprehensive treatment device for waste water |
| 02/14/1989 | US4804629 Detoxification of chlorinated aromatic compounds by organism NRRL B-18087 |
| 02/14/1989 | CA1250063A1 Retrievable jet mixing systems |
| 02/09/1989 | WO1989000979A1 Process for the treatment and disposal of liquid/solid mixtures |
| 02/09/1989 | WO1989000978A1 Apparatus for anaerobic treatment of waste water |
| 02/08/1989 | EP0302852A1 Process for treatment and disposal of mixtures of solids and liquids |
| 02/08/1989 | EP0302708A2 High pressure oxygensaturated water treatment apparatus and process using said apparatus |
| 02/08/1989 | EP0302545A2 Process for the biological purification of waste waters |
| 02/08/1989 | EP0302298A2 Disinfection of sewage sludge |
| 02/08/1989 | CN1030902A Process for biological purification of waste water from methanol |
| 02/07/1989 | US4803166 Microorganism for degrading toxic waste materials |
| 02/07/1989 | CA1249809A1 Mixing systems |
| 02/07/1989 | CA1249783A1 Use of ligninolytic enzymes |
| 02/02/1989 | DE3724692A1 Method for introducing oxygen into water and apparatus for carrying out the method |
| 02/02/1989 | DE3724419A1 Process for purifying waste water |
| 02/02/1989 | DE3724027A1 Verfahren zur nitrifikation, einen hierfuer geeigneten mikroorganismus sowie die im mikroorganismus enthaltene plasmid-dna Method for nitrification, here for a suitable microorganism and the plasmid-dna contained in the micro-organism |
| 02/01/1989 | EP0302030A1 Tank for the purification of waste water and household waste water |
| 02/01/1989 | EP0301924A2 Waste water treating process |
| 02/01/1989 | EP0301305A2 Carrier as a growth area for a biomass |
| 02/01/1989 | EP0301237A1 Tower packing |
| 02/01/1989 | CN1030738A Method for partially purifying water in continous waters |
| 01/31/1989 | US4801621 High water absorbability |
| 01/31/1989 | US4801583 Oligosaccharides and their biological applications |
| 01/31/1989 | US4801336 Process for accelerating the transfer of media in a fluidized bed |
| 01/31/1989 | CA1249674A1 Use of water-absorbing, highly-filled polyurethane (urea) compositions for biological treatment of waste-containing liquids |
| 01/26/1989 | WO1989000548A1 A method in the production of biogas |
| 01/26/1989 | WO1989000547A1 Process for nitrification and nitrogen removal by nitrifying bacteria |
| 01/26/1989 | DE3823950A1 Process for reducing or removing ammonia and/or other odour-active substances from organically polluted waste waters |
| 01/26/1989 | DE3723422A1 Verfahren zur biologischen reinigung von abwaessern von methanol Process for the biological purification of waste waters from methanol |
| 01/25/1989 | EP0300593A1 Microbiological decomposition of chlorinated aliphatic hydrocarbons |
| 01/25/1989 | EP0300348A2 Biogas reactor |
| 01/24/1989 | US4800021 Multilayer filter |
| 01/24/1989 | CA1249228A1 Sequencing batch reactor decanter systems |
| 01/19/1989 | DE3710887A1 Assembly procedure for producing universal function vessels |
| 01/18/1989 | EP0299369A2 Decentralized clarification process |
| 01/17/1989 | US4799265 Electrostatic transducer unit |
| 01/17/1989 | US4798673 Activated sludge, continuous aeration and clarification |
| 01/12/1989 | WO1989000151A1 Reactor for producing biogas |
| 01/12/1989 | DE3722227A1 Apparatus for enriching water with oxygen |
| 01/10/1989 | US4797212 Biological purification of waste waters |
| 01/10/1989 | US4797132 Gas control apparatus |
| 01/10/1989 | CA1248644A1 Wastewater treatment plant and method |
| 01/05/1989 | DE3720922A1 Apparatus for aerating water |
| 01/04/1989 | EP0297417A1 Process and plant for the removal of contaminants from soil |
| 01/04/1989 | CN1030029A Plastic filler used for the bio-fludized bed and floating-medium filtering chamber |
| 01/04/1989 | CN1030028A Bio-chemical fluidized bed with floating qranules |
| 01/03/1989 | US4795557 Apparatus for gas transfer and flotation for treating water to be purified |
| 12/28/1988 | CN88211365U Waste water processing device |
| 12/28/1988 | CA1247798A Foam-containing polyurethane(urea) compositions and process for the preparation thereof |
| 12/28/1988 | CA1247760A Method and apparatus for aerating and mixing waste water |
| 12/28/1988 | CA1247759A Sewage sludge treatment apparatus and process |
| 12/27/1988 | US4793930 Reducing bulking; monitoring oxygen concentration |
| 12/27/1988 | US4793929 Converting ammonium to nitrate, reducing nitrate to nitrogen |
| 12/27/1988 | US4793898 Predefibering lignocellulose with peroxy(formic or acetic)acid |
| 12/22/1988 | DE3719441A1 Method for breaking down aggregated organic and mineral constituents in suspensions, such as sludges and wastewaters, and apparatus for carrying out the method |
| 12/21/1988 | EP0296029A1 Apparatus for automatic measurement of the apparent weight of a mud suspended in a liquid and system for automatic measurement of the ponsar's index of such a mud, using the apparatus |
| 12/20/1988 | US4792519 Method for the monitoring and control of microbial populations |
| 12/15/1988 | WO1988009740A1 Sewage treatment plant |
| 12/15/1988 | WO1988009615A1 Fish cultivation tank |
| 12/15/1988 | DE3718191A1 Aeration device for agitators |
| 12/15/1988 | DE3716806A1 Gas-introduction device |
| 12/15/1988 | DE3716805A1 Gas-introduction body |
| 12/14/1988 | EP0294736A1 Aerator for industrial and domestic wastewaters |
| 12/14/1988 | CN88210772U Multipurpose underwater gas-filling and oxygen-increasing machine |
| 12/13/1988 | US4791061 Immobilization of microorganisms by entrapment |
| 12/13/1988 | US4790940 Process for wastewater treatment |
| 12/13/1988 | US4790939 Method of improving SVI of mixed liquor in aeration tank |
| 12/08/1988 | DE3716637A1 Trickling filter for purifying waste water |
| 12/07/1988 | EP0293521A2 Process for the biological purification of water or waste water from organic nitrogenous pollutants |
| 12/07/1988 | EP0293418A1 Fluid treatment process |
| 12/07/1988 | EP0293374A1 Effluent treatment. |
| 12/06/1988 | US4789503 Air removal snorkel device |
| 12/06/1988 | US4789487 Baffle secured to wall to control flow of waste; without box |
| 12/06/1988 | US4789478 Mixed culture of citrobacter and sulfate reducer |
| 12/06/1988 | US4789469 Rough-surfaced rotation plates immersed in liquid; biological conversion |
| 12/06/1988 | CA1245975A1 Column packing |
| 12/01/1988 | DE3716719A1 Apparatus for aerating water |
| 12/01/1988 | DE3716598A1 Pond treatment plant for purifying waste water |
| 11/30/1988 | CN88102798A Resistenzgen gegen phosphinothricin |
| 11/29/1988 | US4787978 Method for the purification of waste water, notably of urban waste water |
| 11/29/1988 | CA1245779A1 Anaerobic reactor |
| 11/24/1988 | DE3715952A1 High-performance multiple-chamber fixed bed fermenter for the degradation of biomass and process for operating the same |
| 11/24/1988 | DE3714781A1 Clarifying shaft for waste water purification with integral mass separation and oxygen-active clarifying stage |
| 11/23/1988 | EP0292374A1 Method for air flow regulation in a waste water treatment plant |