| Patents for C02F 9 - Multistep treatment of water, waste water or sewage (41,429) |
|---|
| 03/30/1999 | CA2186963C High water recovery membrane purification process |
| 03/25/1999 | WO1999014163A1 Ozonation apparatus for water treatment |
| 03/25/1999 | WO1998052874A3 Water treatment system having dosing control |
| 03/25/1999 | DE19741898A1 Integral filter unit for rain water tank suitable for household use |
| 03/24/1999 | EP0902759A1 Method and apparatus for removing metal ions and/or complexes containing metal ions from a solution |
| 03/24/1999 | CN1211539A Dispensing apparatus having improved filter unit |
| 03/23/1999 | US5885459 Process for purifying and reusing surfactant-containing waste waters |
| 03/18/1999 | DE19740642A1 Process for rendering grey water fit for re-use |
| 03/17/1999 | CN1210817A Multipolar-type electrolytic bath and apparatus for purifying waste and contaminated water using the same |
| 03/16/1999 | US5882513 Aeration, flocculation |
| 03/16/1999 | US5881913 Contamination proof purified water dispenser |
| 03/10/1999 | CN2310070Y Multi-stage water-purifying super-filter for office building |
| 03/10/1999 | CN2310069Y Water purifier |
| 03/10/1999 | CN2310068Y Water-purifier for travelling-cup |
| 03/10/1999 | CN1210504A Process and plant for sewage treatment |
| 03/10/1999 | CN1210503A Treatment of water containing heavy metal ions |
| 03/10/1999 | CN1210093A Closed circulation treatment of waste water and gases in papermaking plants |
| 03/09/1999 | US5880060 Compositions to remove heavy metals and radioactive isotopes from wastewater |
| 03/09/1999 | US5879546 Neutralization, precipitation, pre-filtration, electrocoagulation and final filtration |
| 03/04/1999 | WO1999010287A1 Treatment plant with self-supporting modular structure |
| 03/04/1999 | WO1998054290A3 Process and plant for treatment of distillery lees |
| 03/04/1999 | DE19738049A1 Printing works waste water and solvent filter system |
| 03/03/1999 | EP0899237A2 Apparatus for water treatment |
| 03/02/1999 | US5876685 Using ion exchange resin |
| 03/02/1999 | US5876596 Apparatus for treating water |
| 02/28/1999 | CA2246119A1 Condensate drain pan for hvac units |
| 02/25/1999 | WO1999009263A1 Apparatus for the treatment of rain water |
| 02/25/1999 | WO1999008768A1 Filtration method and device for liquid purification |
| 02/25/1999 | DE19580599C1 Purifying dairy waste water |
| 02/24/1999 | EP0558568B1 A method for treating an organic substance |
| 02/24/1999 | CN1208720A Device for creation of oxidation and pptn. zone or reduction zone in aquifer |
| 02/23/1999 | US5874204 Process for rejuvenation treatment of photoresist development waste |
| 02/23/1999 | US5873996 Community drinking water purification system |
| 02/19/1999 | CA2211935A1 Apparatus for the treatment of potable water |
| 02/18/1999 | WO1999007644A1 Purification system for dry cleaning separator waste water |
| 02/18/1999 | WO1999007456A1 Flowmeter system useable with water treatment device |
| 02/18/1999 | CA2299326A1 Purification system for dry cleaning separator waste water |
| 02/17/1999 | CN2307786Y Automatic water purifier |
| 02/16/1999 | CA2057362C Process for working up aqueous solutions containing hydrogen sulfide, hydrogen cyanide and ammonia |
| 02/09/1999 | US5868944 Providing oxygen from source integrated in water cooler, transferring to headspace above water in bottle to maintain dissolved oxygen content at supersaturated level, dispensing oxygen enriched water |
| 02/09/1999 | US5868941 Passing water contaminated with halogenated hydrocarbons through a bed of granular iron |
| 02/09/1999 | US5868934 Method and apparatus for organic wastewater treatment capable of preventing decrease in permeation efficiency of submerged membrane without dilution |
| 02/09/1999 | US5868927 Apparatus and method for treating waste water from a residential home |
| 02/09/1999 | US5868916 Process for recovering organic hydroxides from waste solutions |
| 02/09/1999 | US5868172 Flow augmenting device for a wastewater treatment plant |
| 02/04/1999 | WO1999005067A1 Method for treating alkaline waste water |
| 02/04/1999 | CA2297281A1 Method for treating alkaline waste water |
| 02/03/1999 | EP0894770A1 Process and device for treating opaque pollutants in industrial and/or agricultural wastewater |
| 01/28/1999 | DE19747793C1 Simple, cost-effective, almost quantitative removal of white phosphorus from mixture |
| 01/27/1999 | CN2305400Y Reverse osmosis pure water machine with back flushing type front precision safety filter system |
| 01/27/1999 | CN1205990A Ozone disinfecting drinking water system for use in building |
| 01/27/1999 | CN1205989A Underground sewage percolating and middle water reusing technology |
| 01/27/1999 | CN1205986A Ultraviolet disinfecting drinking-water system |
| 01/26/1999 | US5863442 Electrodeposition of silver, acidification of fixer bath with hydrogen chloride to precipitate sulfur, mixing solution with spent developer, adjustment to ph 2, heating and drawing off sulfur dioxide, then basification to liberate ammonia |
| 01/20/1999 | EP0891951A1 Method and apparatus for treating selenium-containing waste water |
| 01/20/1999 | EP0891302A2 Process for the biological purification of waste water |
| 01/20/1999 | EP0891300A1 Method of treating drinking water for consumption |
| 01/20/1999 | EP0770038B1 Transportable device for preparing drinking water |
| 01/20/1999 | EP0717724B1 Sewage treatment apparatus and method |
| 01/20/1999 | EP0712381B1 Method of purifying waste water from dairies |
| 01/19/1999 | US5860767 High-vacuum groundwater and soil remediation system and related method and apparatus |
| 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 |
| 01/13/1999 | CN2303837Y Purifying device for water treatment |
| 01/12/1999 | US5858248 On premise water treatment method for use in a post-mix beverage dispenser |
| 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 | CA2104692C Purification of waste streams |
| 01/07/1999 | EP0889009A1 Process for removing heavy metal ions |
| 01/07/1999 | EP0888247A1 Water treatment device with drinking water filter, regeneration device and process for treatment of drinking water |
| 01/07/1999 | EP0739312B1 Bottle water disinfection system |
| 01/07/1999 | EP0634364B1 Pure water manufacturing method |
| 01/06/1999 | CN1203904A Dilute acid oxidation of dinitrotoluene alkaline wash water |
| 01/06/1999 | CN1041538C Method for treating pickle waste liquor |
| 01/05/1999 | US5855795 Methods and apparatus for sterilizing purified water stored in a water purifier |
| 01/05/1999 | US5855793 Method of treating waste water to remove harmful ion by coagulating sedimentation |
| 01/05/1999 | US5855792 Rinse water recycling method for semiconductor wafer processing equipment |
| 01/05/1999 | US5855787 Removing inks from printing plate |
| 01/05/1999 | US5855777 Multi-chamber water purification device and method of using the same |
| 12/30/1998 | WO1998058727A1 Fluid purification devices and methods employing deionization followed by ionization followed by deionization |
| 12/30/1998 | EP0886599A1 Off-shore sewage treating and handling apparatus and method |
| 12/30/1998 | EP0853651A4 Cleaning compositions for oil and gas wells, lines, casings, formations and equipment and methods of use |
| 12/30/1998 | EP0642610B1 Treatment of bleach plant effluents |
| 12/30/1998 | CN1203198A Method for treating waste liquid of alcohol by using hot fume from boiler |
| 12/29/1998 | US5853579 Treatment system |
| 12/29/1998 | US5853573 Groundwater total cyanide treatment apparatus |
| 12/29/1998 | US5853572 Home water purification system |
| 12/29/1998 | US5853494 Method for automatic washing of vehicles |
| 12/24/1998 | DE19823490A1 Waste water collection and disposal system for use in light-density especially rural settlement |
| 12/23/1998 | WO1998057897A1 Oxygenated water cooler |
| 12/23/1998 | EP0885041A1 Retaining filter, plant and method for treating effluents |
| 12/23/1998 | EP0706555B1 Composition for inhibiting stress cracks in plastic articles and methods of use therefor |
| 12/23/1998 | CN2301442Y High-efficiency field water purifier |
| 12/23/1998 | CN1202922A Cleaning compositions for oil and gas well, lines, casings, formations and equipment and its methods of use |
| 12/23/1998 | CN1202876A Method for pretreating raw water |
| 12/23/1998 | CN1202875A Liquid sterilisation apparatus |
| 12/23/1998 | CA2294092A1 Oxygenated water cooler |
| 12/17/1998 | WO1998056659A1 Ozone disinfected water delivery system and method |
| 12/17/1998 | WO1998056481A1 A method for separating water soluble organics from a process stream by aqueous biphasic extraction |
| 12/16/1998 | EP0789673B1 Methods of coagulating and decolorizing waste streams |
| 12/16/1998 | CN2300651Y Apparatus for processing yellow rice or millet wine and fruit wine |