| Patents for C02F 9 - Multistep treatment of water, waste water or sewage (41,429) |
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| 12/10/2002 | US6491868 Used to filter and treat contaminants in water |
| 12/10/2002 | US6491811 Sensor for a water treatment apparatus |
| 12/05/2002 | WO2002096808A1 Method for treatment of wastewater |
| 12/05/2002 | WO2002096807A2 Electrodeionization apparatus and method |
| 12/05/2002 | US20020179524 Using activated sludge |
| 12/05/2002 | US20020179514 Method and apparatus for recovery of waste water |
| 12/05/2002 | US20020179508 System for the production of laboratory grade ultrapure water |
| 12/04/2002 | EP1262461A1 Two-stage water filtration system |
| 12/04/2002 | CN1382651A Process for comprehensively treating sewage |
| 12/04/2002 | CN1382650A Process for comprehensively treating high-concentration water organic water |
| 12/04/2002 | CN1382649A Process for treating used water difficult to degradate by catalytic internal electrolysis of iron |
| 12/03/2002 | US6488847 Process and equipment for recovering developer from photoresist development waste and reusing it |
| 11/28/2002 | WO2002094725A2 A method and device for recovery of water from the atmospheric air |
| 11/28/2002 | WO2002028781A3 Apparatus and process for extracting and recovering metals from aqueous solutions |
| 11/27/2002 | EP1260281A2 Method for disinfecting and cleaning water treatment plants |
| 11/27/2002 | EP1259652A1 Process and apparatus for recovery of cyanide and metals |
| 11/27/2002 | EP1259466A1 A method for processing lignocellulosic material |
| 11/27/2002 | CN2522416Y 污水处理机 Sewage processor |
| 11/27/2002 | CN1382109A Water purifying system |
| 11/27/2002 | CN1381411A Process for separating oil, water and solid from oil-contained float slegs |
| 11/27/2002 | CN1381410A Process for treating and reclaiming polymer-contained sewage |
| 11/26/2002 | US6485696 Recovery/removal of metallic elements from waste water using ozone |
| 11/26/2002 | US6485649 Method and device for the production of pure water |
| 11/26/2002 | US6485629 Process for separation of heavy metals from residues by use of ethylene-diamine-disuccinic acid (edds) complexant |
| 11/21/2002 | DE10117143A1 Removing fat and purifying rinsing water for public use |
| 11/20/2002 | EP1257713A1 Apparatus for extracting portable water from the environmental air |
| 11/20/2002 | CN1380835A Method and apparatus for treating of water/waste water |
| 11/19/2002 | US6482327 Liquid treating process and apparatus, as well as liquid treating system |
| 11/19/2002 | US6482325 Apparatus and process for separation and recovery of liquid and slurry abrasives used for polishing |
| 11/19/2002 | US6482319 In-line filtration system for treatment of septic tank effluent |
| 11/19/2002 | US6481448 Washing and recycling unit for on-site washing of heavy machinery |
| 11/14/2002 | WO2002090266A1 Water treating device |
| 11/14/2002 | WO2002089957A1 Apparatus and method for the treatment of waste |
| 11/14/2002 | WO2002045816A3 Double-cartridge filter medium housing |
| 11/14/2002 | US20020168418 Method and apparatus for treating water for use in improving the intestinal flora of livestock and poultry |
| 11/14/2002 | US20020166819 System and method for separating components of liquid manure |
| 11/14/2002 | US20020166806 Waste water treatment system with an ion-selective membrane |
| 11/14/2002 | DE4244840C2 Trennvorrichtung für fluide Medien, insbesondere zur Behandlung von Schlamm- und/oder Abwasser Separating device for fluid media, in particular for the treatment of sludge and / or waste water |
| 11/13/2002 | EP1229980A4 Method and apparatus for treating of water/wastewater |
| 11/13/2002 | EP0770039B1 Decontamination system with improved components |
| 11/13/2002 | CN1379735A Waste treatment process |
| 11/13/2002 | CN1379152A Process for reclaiming waste digestion liquid of alkaline (or neutral) straw pulp generated by sodium sulfite method |
| 11/07/2002 | US20020162801 Method and apparatus for clarification of water |
| 11/07/2002 | US20020162779 Point-of-use water treatment system |
| 11/07/2002 | US20020162453 For treating a gas to be treated containing organic substances used as organic solvents and the like by using an adsorbent |
| 11/07/2002 | DE10121206A1 To clean and disinfect a water processing plant, for water supplies, the inflow is disconnected and hot steam is passed through the system under pressure to remove residue and disinfect the surfaces, with a back flow through the filter |
| 11/06/2002 | EP1253950A2 Sterile water generator |
| 11/06/2002 | CN2519805Y Finely running water treatment apparatus |
| 11/06/2002 | CN1378611A Method for minimising new water use in water circulation system of a treatment plant |
| 11/06/2002 | CN1378486A Centrifugal pressurized separators and methods of controlling same |
| 11/06/2002 | CN1377834A Supply system of water treatment apparatus |
| 11/05/2002 | US6475371 Method and apparatus for producing electrolytic reduced water |
| 11/05/2002 | US6475352 Method and apparatus for monitoring an ozone generator in a household water purifier |
| 11/05/2002 | US6474111 Recycling system for laundry wash water |
| 10/31/2002 | WO2002085801A1 Periphyton filtration pre- and post-treatment system and method |
| 10/31/2002 | US20020158024 Flocculating the animal waste slurry, filtering flocculated slurry to separate liquid from solid material, drying solid, processing liquid to extract ammonia, phosphorus and potassium from the slurry; closed loop, zero discharge system |
| 10/31/2002 | US20020158014 Metal containing waste water treatment method and metal containing waste water treatment equipment |
| 10/31/2002 | US20020158001 Filtering medium consists of three parts: peat moss, anthracite and bentonite |
| 10/31/2002 | US20020157998 Structure of a water purifier |
| 10/31/2002 | US20020157966 Exposing the solution to a high voltage electric field and to a trickle current simultaneously and passing the solution through a filter medium to remove the metal; water treatment |
| 10/30/2002 | EP1252108A2 Water and wastewater treatment system and process for contaminant removal |
| 10/30/2002 | EP1252105A1 Method of recycling dispersion paint substances or glues from waste water and apparatus for performing the same |
| 10/30/2002 | EP1252101A1 Water purification filter |
| 10/30/2002 | EP1091910A4 Hydrogen sulfide removal methods and apparatus |
| 10/30/2002 | EP1017628B1 Water treatment system having dosing control |
| 10/30/2002 | CN1377326A Method and apparatus for multistage liquid filtration |
| 10/30/2002 | CN1376642A Equipment and process for treating sewage by integrated oxidizing ditch with 3D circulation |
| 10/28/2002 | EP1105584A4 Water circulation |
| 10/24/2002 | US20020153324 Ship-board system for decontaminating wastewater contaminated by firefighting operations |
| 10/24/2002 | US20020153319 Method and apparatus for high efficiency reverse osmosis operation |
| 10/24/2002 | US20020153307 Mixing sludge with an acidic leaching solution to acidify and to dissolve heavy metals and to destroy the majority of the pathogenic microorganisms, without dissolving fertilizing elements; solid-liquid separation; neutralizing; recovering |
| 10/24/2002 | US20020153303 Introducing sewage to the bottom of a fermentation cell; removing suspended solids, microorganisms, nutrients, and pathogens from the sewage to produce a disinfected quaternary effluent; producing purified water |
| 10/24/2002 | US20020153301 Periphyton filtration pre-and post-treatment system and method |
| 10/24/2002 | DE10119119A1 Industrial and trade waste water treated by filtration, disinfecting and oxygenation via a membrane |
| 10/24/2002 | DE10118940A1 Physical chemistry process removes all particulate and microbiological impurities from drinking water |
| 10/23/2002 | EP1250289A2 Device for treating water |
| 10/17/2002 | WO2002081387A1 Apparatus for treatment of wastewater, including a biofilter and a post-filter |
| 10/17/2002 | WO2002080671A1 Bactericide for use in water treatment, method for water treatment and apparatus for water treatment |
| 10/17/2002 | US20020150861 Air-sucking, sterilizing and wastewater treatment method for dental clinic bed |
| 10/17/2002 | US20020148790 Chemical destruction of ammonia with an oxidizing agent, followed by treatment with calcium salts to precipitate calcium fluoride, and filtration |
| 10/17/2002 | US20020148783 Via exposure to electrical energy; reverse osmosis |
| 10/17/2002 | US20020148761 Fluid purification system and component and method of using same |
| 10/17/2002 | US20020148719 Water purification system |
| 10/16/2002 | EP1249279A1 Installation for the elimination of atmospheric emissions of organic solvents used for paint thinning |
| 10/16/2002 | EP1248527A1 Beverage brewing system and method for using same |
| 10/16/2002 | CN2516544Y Biochemical treatment device for domestic sewage |
| 10/16/2002 | CN1374929A Water treatment apparatus |
| 10/16/2002 | CN1374423A Closed treatment method of paper-making waste water with sulfite |
| 10/16/2002 | CN1374260A MIcrowave catalytic oxidation process and apparatus for treating waste water containing hard-to-degrade organic matters |
| 10/16/2002 | CN1092610C Method for removing organic ingredient from oil-field well-drilling waste water |
| 10/15/2002 | US6464884 Ultraviolet disinfection unit connected downstream of filter |
| 10/15/2002 | US6464874 Biological sludge and calcium-containing chemical sludge for both organic matters and fluorine in only one reaction tank |
| 10/15/2002 | US6464499 Air-sucking, sterilizing and wastewater treatment method for dental clinic bed |
| 10/12/2002 | CA2381681A1 System and method for separating components of liquid manure |
| 10/11/2002 | CA2343832A1 Waste treatment system |
| 10/10/2002 | US20020144948 Process for depleting monovalent cations from a water intended for nutritional purposes |
| 10/10/2002 | DE10152098A1 Vorrichtung zur Erzeugung ultrareinen Wassers A device for generating ultra-pure water |
| 10/09/2002 | EP1246779A2 Method and device for purifying untreated water |
| 10/09/2002 | CN2515198Y Floating-bed type sewage purifier with illumination device |
| 10/09/2002 | CN2515197Y Floating-bed type sewage purifier with wind energy aeration and biological treatment |