| Patents for C02F 3 - Biological treatment of water, waste water, or sewage (46,453) |
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| 01/26/1999 | US5863119 Apparatus for mixing a slurry within a bioreactor vessel |
| 01/21/1999 | DE19830647A1 Waste water biological treatment process and assembly |
| 01/21/1999 | DE19758486A1 Biological purification of waste water using nitrification and denitrification reactors |
| 01/21/1999 | DE19731309A1 Floating treatment assembly for bodies of water |
| 01/21/1999 | DE19730839A1 Textile material useful in the purification of waste water |
| 01/21/1999 | DE19730653A1 Microbiological degradation of halogenated hydrocarbon(s) in contaminated media |
| 01/20/1999 | EP0891951A1 Method and apparatus for treating selenium-containing waste water |
| 01/20/1999 | EP0891304A1 Process for the microbiological purification of slurries containing heavy metals |
| 01/20/1999 | EP0891303A1 Dual-flow filter for biological effluent purification |
| 01/20/1999 | EP0891302A2 Process for the biological purification of waste water |
| 01/20/1999 | EP0891301A1 Waste water treatment apparatus |
| 01/20/1999 | EP0800482A4 Method and apparatus for the treatment of concentrated wastewater |
| 01/20/1999 | EP0712381B1 Method of purifying waste water from dairies |
| 01/20/1999 | CN2304656Y Combined three-phase separator |
| 01/20/1999 | CN2304655Y Anaerobic water distributor |
| 01/19/1999 | US5861095 Multicompartment cells, coverings aithaerobic and anaerobic cells, polishing |
| 01/19/1999 | CA2139247C Sewage treatment system using peat and a constructed wetland |
| 01/14/1999 | WO1999001388A1 Method and equipment for off-shore treatment of communal sewage water |
| 01/14/1999 | WO1999001387A1 Method for biological purification of waste water by the activated sludge method and apparatus for carrying out the method |
| 01/14/1999 | WO1999001386A1 Device for mixing and aerating liquids |
| 01/14/1999 | WO1999001385A1 Waste water treatment system |
| 01/14/1999 | WO1999001384A1 Method for automatically adjusting the aeration of an installation for biological treatment of waste water |
| 01/14/1999 | WO1999001383A1 Treatment of acidic water containing dissolved ferrous cations |
| 01/14/1999 | DE19729680A1 Waste water treatment system comprises series of drums containing solid substances |
| 01/13/1999 | EP0890553A2 Process for biological water purification and installation for carrying out the process |
| 01/13/1999 | CN1205032A Novel microorganism and method for environmental purification using the same |
| 01/13/1999 | CN1204625A Microorganisms-immobilized magnetic carriers, process for producing carriers and method of treating waste water |
| 01/12/1999 | US5858763 Thermophilic methanotrophs for high temperature oxidations |
| 01/12/1999 | US5858283 Sparger |
| 01/12/1999 | US5858222 Aeration tank for mixing aqueous organic waste with activated sludge, modification unit to kill the bacteria in part of the sludge, making it biodegradable for recirculation; reduces excess sludge, improves sedimentation |
| 01/12/1999 | US5858203 Transferring contamination from a substantially solid phase of the slurry to a substantially liquid phase of the slurry |
| 01/12/1999 | US5858069 Treatment of liquid |
| 01/08/1999 | CA2210068A1 Wastewater treatment system and contact device therefor |
| 01/07/1999 | WO1999000333A1 Process for reducing nitrous oxide emission from waste water treatment |
| 01/07/1999 | WO1999000332A1 Waste water treatment apparatus and waste water treatment method |
| 01/07/1999 | EP0889124A2 Microorganism-immobilized magnetic carriers, a process for producing the carriers and a method of treatment wastewater |
| 01/07/1999 | EP0889008A1 Method and apparatus for treating water |
| 01/07/1999 | EP0888434A1 Enzymatic detergent composition and method for degrading and removing bacterial cellulose |
| 01/07/1999 | EP0888256A1 Process and device for sewage treatment |
| 01/07/1999 | EP0888255A1 Aerobic long vertical shaft bioreactors |
| 01/07/1999 | EP0888254A1 Aeration means for a tank filled with liquid |
| 01/07/1999 | EP0888253A1 Small-scale biological sewage treatment plant |
| 01/07/1999 | EP0888197A1 Method for hyperaccumulation of metals in plant shoots |
| 01/07/1999 | EP0888163A1 Odor control system |
| 01/07/1999 | EP0821658B1 Waste water treatment plant |
| 01/07/1999 | EP0809608B1 Combined chemical and biological water treatment process |
| 01/07/1999 | EP0681561B1 Wastewater treatment process and apparatus |
| 01/07/1999 | EP0655987B1 Filler block |
| 01/07/1999 | DE19737542C1 Biological filter or treatment plant for domestic waste water |
| 01/07/1999 | DE19728433A1 Water vessel for small sewage plants |
| 01/07/1999 | CA2295751A1 Process for reducing nitrous oxide emission from waste water treatment |
| 01/06/1999 | CN1204365A Carrier for deposition of micro organism and process for preparing the same |
| 01/06/1999 | CN1204304A Single-tank sewage treatment plant |
| 01/05/1999 | US5855799 Rotary disk filter with backwash |
| 01/05/1999 | US5855785 Three-phase separator for a fluidized bed apparatus |
| 01/05/1999 | US5855775 Microporous diffusion apparatus |
| 12/30/1998 | WO1998058881A1 Method and apparatus for biological treatment of waste water |
| 12/30/1998 | WO1998058740A1 Method and apparatus for lysing sludge and dividing solids in liquid suspension |
| 12/30/1998 | EP0887314A2 Waste water ozonization process and apparatus |
| 12/30/1998 | EP0887313A1 Sewage treatment |
| 12/30/1998 | EP0886599A1 Off-shore sewage treating and handling apparatus and method |
| 12/30/1998 | EP0745060A4 Stormwater treatment system/apparatus |
| 12/30/1998 | EP0737089A4 Launder cover for use in a clarifier tank |
| 12/30/1998 | EP0603272B1 Apparatus for monitoring liquids |
| 12/30/1998 | CN1203628A Porous polymeric biosupports and their use in biotreatment of aqueous waste streams |
| 12/30/1998 | CN1203197A Waste water treatment method for removing nitrogen and phosphorus and plant thereof |
| 12/30/1998 | CA2293526A1 Method and apparatus for lysing sludge and dividing solids in liquid suspension |
| 12/29/1998 | US5854059 Biodegradation of an organic compound and process for upgrading the environment by removing the aforesaid compound |
| 12/29/1998 | US5853591 Rotating biological aquarium filter system |
| 12/29/1998 | US5853589 Advanced biological phosphorus removal using a series of sequencing batch reactors |
| 12/29/1998 | US5853588 Wastewater treatment process |
| 12/29/1998 | US5853578 Method for biological purification of liquids and biological filter for purification of liquids |
| 12/29/1998 | US5853576 Phytorecovery of metals using seedlings |
| 12/23/1998 | EP0885850A1 Process for controlling and regulating the pressure drop in a biological filter and plant for carrying out the process |
| 12/23/1998 | EP0885639A1 Process for regulating the charge of an oxygen containing gas into a biofilter with rising flow and plant for carrying out the method |
| 12/23/1998 | EP0885564A2 Plant for the treatment of water and use of this water |
| 12/23/1998 | EP0885175A1 System for removing nutrients from wastewater |
| 12/23/1998 | EP0885174A1 Biological denitrification of water |
| 12/23/1998 | EP0885173A1 Process and apparatus for effecting a biological aerobic pretreatment of dairy industry effluent |
| 12/23/1998 | EP0885172A1 Capillary fixed-bed reactor for treating a liquid |
| 12/23/1998 | EP0885032A1 Process for microbial decomposition of harmful substances in media charged with harmful substances, and micro-organisms suitable for this purpose |
| 12/22/1998 | US5851399 Process and arrangement for biodegrading pollutants in water |
| 12/22/1998 | US5851398 Algal turf water purification method |
| 12/22/1998 | US5851066 Floating mixer |
| 12/16/1998 | EP0884281A1 Process and installation for the treatment of effluent loaded with organic substances |
| 12/16/1998 | EP0883575A1 Method of treating an acid solution |
| 12/16/1998 | EP0828692B1 Novel method for the control of biodegradation |
| 12/16/1998 | EP0665819B1 Odour controlled waste water treatment system |
| 12/16/1998 | EP0600989B1 Process for removal of organic pollutants from wastewater |
| 12/16/1998 | CN1201705A Fluidized bed filtering apparatus |
| 12/15/1998 | US5849566 Composition for accelerating the decomposition of hydrocarbons |
| 12/15/1998 | US5849194 Apparatus and method for treating waste water both chemically and biologically utilizing reaction fillers |
| 12/15/1998 | US5849192 Procedure to recover from nitrification upsets |
| 12/15/1998 | US5849191 Wastewater treatment method, method of suspensions separation and method of saturation of liquid with gas |
| 12/15/1998 | US5849180 Method of biologically removing nitrogen and system therefor |
| 12/15/1998 | CA2131731C Solid-liquid separator |
| 12/10/1998 | WO1998055409A1 Pool of yeast of the genus candida maltosa used for the bio-degradation of petroleum product pollutants, biological preparation obtained using this pool and methods for its preparation and application |
| 12/10/1998 | WO1998055407A1 Method and apparatus for treating wastewater |
| 12/10/1998 | WO1998055406A1 Biological product for maintaining water mains and purifying waste water |
| 12/10/1998 | WO1998055402A1 Method and device for sewage treatment |