| Patents for C02F 3 - Biological treatment of water, waste water, or sewage (46,453) |
|---|
| 05/12/1999 | EP0915061A1 Method for reducing the effect of detergents upon germination and/or growth of micro-organisms |
| 05/12/1999 | EP0915057A2 Process for the selective elimination of ammonia or ammonium ions from an aqueous solution |
| 05/12/1999 | EP0914192A1 Process for the purification of gases containing hydrogen sulphide |
| 05/12/1999 | EP0817759A4 Method and apparatus for treating wastewater |
| 05/12/1999 | CN1216581A Microorganism carrier and process for production thereof |
| 05/11/1999 | US5902747 Transferring gaseous component between two fluids through membrane unit including liquid impermeable, oxygen permeable nonporous membrane formed of amorphous copolymer of perfluoro-2,2-dimethyl-1,3-dioxole |
| 05/11/1999 | US5902484 Method and system for treatment of water and wastewater |
| 05/11/1999 | CA2096175C Wastewater treatment method and apparatus |
| 05/11/1999 | CA2074470C Method and reactor for purification of water |
| 05/06/1999 | WO1999021800A1 Method and device for adjusting the permeate flow rate in membrane bioreactors for water treatment |
| 05/06/1999 | EP0913362A1 Waste water treatment plant |
| 05/06/1999 | EP0913361A1 Rotating bio-filter for aerobic treatment |
| 05/06/1999 | EP0913091A1 Composition and method for inhibiting the growth of microorganisms including stabilized sodium hypobromite and isothiazolones |
| 05/06/1999 | EP0912450A1 Multi-phase dual cycle influent process |
| 05/06/1999 | EP0912449A1 A method of biologically cleaning polluted water |
| 05/06/1999 | DE19843967A1 Verfahren zur Denitrifikation von Abwässern A method for denitrification of wastewater |
| 05/06/1999 | DE19748396A1 Verfahren zur Entfernung hydrophober Verunreinigungen mittels spaltbarer nichtionischer Tenside Process for the removal of hydrophobic contaminants using the cleavable nonionic surfactants |
| 05/06/1999 | DE19748000A1 Nitrification of ammonium-rich waste water |
| 05/05/1999 | CN1215702A Two-phase anaerobic membrane-biologic system and process for treatment of waste water |
| 05/04/1999 | US5900362 Nitrosomonas comprising plasmid with luciferase-beta galactosidase transcription fusion; for monitoring viability of bacteria in sewage plants |
| 05/04/1999 | US5900150 Method of purifying waste water biologically |
| 05/04/1999 | CA2061401C Water purifying apparatus |
| 04/29/1999 | WO1999020572A1 Water reclamation system for a vehicle wash system |
| 04/29/1999 | WO1999020571A1 Method for reducing the effect of detergents upon germination and/or growth of microorganisms |
| 04/29/1999 | WO1999020570A1 Composite material comprising biodegradable plastic and fibrous material |
| 04/29/1999 | WO1999020523A1 Method and apparatus for aeration using flexible blade impeller |
| 04/29/1999 | DE19749699A1 Small-scale three stage waste water treatment plant for remote dwellings |
| 04/29/1999 | CA2303009A1 Method for reducing the effect of detergents upon germination and/or growth of microorganisms |
| 04/28/1999 | EP0910551A1 Ultrapurification method and sampler |
| 04/28/1999 | EP0844915A4 Water recovery from a septic tank |
| 04/28/1999 | EP0797546B1 Clarification pool |
| 04/28/1999 | CN1215382A Process for biological purification of waste water |
| 04/28/1999 | CN1215029A Anaerobic reation pool and method for treating waste water |
| 04/27/1999 | US5898375 Siphon alarm and restarting mechanism |
| 04/27/1999 | US5897997 Reactor for implementing chemical reactions involving a biomass |
| 04/27/1999 | US5897778 Using a absorbent filter |
| 04/27/1999 | US5897777 Waste water treatment system |
| 04/27/1999 | US5897771 Apparatus for aerobic treatment of waste water |
| 04/27/1999 | CA2086700C Method and device for small system wastewater denitrification |
| 04/22/1999 | WO1999019263A1 Manure treatment system |
| 04/22/1999 | WO1999019047A1 Mixing impellers especially adapted for use in surface aeration |
| 04/21/1999 | EP0909812A2 Bacterial strains P230 and P212a/2 and methods for the microbial decontamination of materials polluted with phenoxy-herbicides |
| 04/21/1999 | EP0810976B1 Purification system for raw water, in particular for waste water |
| 04/21/1999 | EP0790960A4 Wastewater treatment method and plant |
| 04/20/1999 | US5895832 Process for the treatment of contaminated material |
| 04/20/1999 | US5895577 Decomposed biologically by bacteria and exposed to sonic radiation to split cell walls of the microorganisms, improved, reduces residual biological solid sludge |
| 04/20/1999 | US5895576 Method and apparatus for wastewater treatment by chemical reaction of reactive filler and propagated microorganisms |
| 04/20/1999 | US5895567 Biological waste fluid cleaner |
| 04/20/1999 | US5895566 Aerobic wastewater treatment system for small flows |
| 04/20/1999 | CA2164682C Flow control for evening out waste water inflow in soil-based installations for waste water purification |
| 04/15/1999 | WO1999018038A1 Installation for biochemichal sewage treatment |
| 04/15/1999 | WO1999018037A1 A method of preparing a microbial culture for wastewater treatment |
| 04/15/1999 | WO1999018036A1 Method for controlling aeration systems of biological tanks treating waste water |
| 04/15/1999 | WO1999018035A1 Method for evaluating and controlling the biomass contained in waste water treatment biological tanks |
| 04/15/1999 | WO1999018034A1 Method for controlling and managing the biomass store of biological installations treating waste water |
| 04/15/1999 | DE19816900C1 Tilting pipe with float controller and ball valve for discharging liquid |
| 04/15/1999 | DE19744700A1 Removal of phenolic compounds from wastewater, using lignolytic enzymes for removal or organic substances, prior to treatment with polychromatic light radiation |
| 04/15/1999 | DE19744698A1 Biological treatment of water using fungi |
| 04/15/1999 | CA2305186A1 Installation for biochemichal sewage treatment |
| 04/14/1999 | EP0907615A1 A reactor for the depuration of polluted waste waters |
| 04/14/1999 | EP0843651A4 Filtration medium |
| 04/14/1999 | EP0809609B1 Method for degradation of nitroaromatic contaminants |
| 04/14/1999 | CN2313924Y Spherical float filler |
| 04/14/1999 | CN2313923Y Filler for water purification |
| 04/14/1999 | CN1213648A Sewage treating unit |
| 04/13/1999 | US5893978 Purifying method and purification system for lakes and marshes |
| 04/13/1999 | US5893975 Enhanced subsurface flow constructed wetland |
| 04/08/1999 | WO1999016717A1 A process for biological purification of waste water with reversing operation |
| 04/08/1999 | WO1999016716A1 A process for biological purification of waste water under sludge retention |
| 04/07/1999 | EP0906247A1 Wastewater treatment |
| 04/07/1999 | EP0906140A1 Biodegradation of metal cyanides |
| 04/07/1999 | EP0807088B1 Process for aerobic treatment of waste water |
| 04/07/1999 | EP0673349B1 Improvements relating to plastics articles |
| 04/07/1999 | CN2312926Y Apparatus for treating efficiently industrial waste water and life sewage |
| 04/07/1999 | CN2312925Y Multivariable net-shaped solid filler |
| 04/07/1999 | CN1213347A Off-shore sewage treating and transport apparatus and method thereof |
| 04/06/1999 | US5891408 Scrubbing and circulation a transition metal chelate such as iron edta and complexes with nitrogen oxide |
| 04/06/1999 | US5891339 Into chlorine and oxygen using dismutase |
| 04/06/1999 | US5891332 Magnetic filtration apparatus for purifying water |
| 04/03/1999 | CA2249490A1 Fluidized bed aquarium filtration system |
| 04/01/1999 | WO1999015465A1 Method for eliminating a nitrogenated heterocyclic, or aromatic, compound in an effluent |
| 04/01/1999 | DE19742734A1 Mobile anaerobic waste water treatment plant consists of container with subdividing panels forming chambers each one of which may be linked to another |
| 04/01/1999 | DE19737299A1 Biological purification of eutrophic waters using macrophytes for reduction of phytoplankton |
| 03/31/1999 | EP0777632B1 Combined screw for water processing apparatuses |
| 03/31/1999 | EP0672022B1 Process for treating waste water |
| 03/30/1999 | US5888396 Bioremediation of chlorinated aliphatic, chlorinated aromatic, or non-chlorinated atomatic hydrocarbon pollutants; low tetrachloroethene toxicity and improved degradation compared to conventional bacteria |
| 03/30/1999 | US5888395 Selecting stable bacterial isolate which degrades impurities, culturing in supplemented medium which increases attachment rate and decreases detachment rate, placing biomass as filter at contaminated site, extracting water through filter |
| 03/30/1999 | US5888394 Method and apparatus for sewage water treatment |
| 03/30/1999 | US5888391 Aerating device |
| 03/30/1999 | CA2079467C Biological system for degrading nitroaromatics in water and soils |
| 03/25/1999 | WO1999014164A1 A fluid mixing system |
| 03/25/1999 | WO1998045030A9 Aeration diffuser |
| 03/24/1999 | EP0903325A1 Apparatus and method for ozone treatment of sewage sludge |
| 03/24/1999 | EP0902761A1 Clarification plant for water purification |
| 03/24/1999 | EP0902760A1 Immobilized cell bioreactor and method of biodegrading pollutants in a fluid |
| 03/24/1999 | EP0793623A4 Multi-channel denitrification system |
| 03/24/1999 | EP0775093B1 Method and apparatus for the biochemical purification of a liquid medium |
| 03/24/1999 | CN2311490Y Suspension biologic filler |
| 03/24/1999 | CN1212053A Method for monitoring biological activity in fluids |
| 03/24/1999 | CN1211618A Detoxicating engineering bacteria and its application |