| Patents for C02F 9 - Multistep treatment of water, waste water or sewage (41,429) |
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| 03/30/2000 | DE19844171A1 Biosorption process for removal of metals from solution, uses the consumption of citric acid by growing fungi to raise the pH to cause biosorption of metals into the fungal biomass |
| 03/29/2000 | CN2371184Y Integrated waste water treater |
| 03/28/2000 | US6042720 Apparatus for storing and disinfecting a fluid |
| 03/22/2000 | EP0987234A1 Process for treating biological wastes and phase separator for implementing said method |
| 03/22/2000 | EP0986517A1 Method of disinfecting water and food stuff preservation with iodine species |
| 03/22/2000 | EP0986428A1 Method and apparatus for recovery of water and slurry abrasives used for chemical and mechanical planarization |
| 03/22/2000 | EP0880476B1 Process and plant for sewage treatment |
| 03/22/2000 | CN2370003Y Device for producing purified water |
| 03/16/2000 | WO2000014464A1 Ambient air water extraction and supply apparatus and method |
| 03/15/2000 | EP0985641A2 Process for treating waste water containing cutting oil |
| 03/15/2000 | EP0985640A2 Process for treating waste water containing a resin |
| 03/15/2000 | CN2368842Y Unitary apparatus for purifying, sterilizing, preseving and storing ice and hot drinking water |
| 03/15/2000 | CN2368841Y Apparatus for purifying, mineralizing, activating and magnetizing health-care water |
| 03/15/2000 | CN2368840Y Multifunctional water purifier |
| 03/15/2000 | CN1247481A Process for recovering organic hydroxides from waste solutions |
| 03/14/2000 | US6036866 Automatic regeneration of individual fluid treatment units without interruption of the production of treated water; decision of when to regenerate based on the number of units in service and the fractional capacity of each unit |
| 03/09/2000 | WO2000012435A1 Water purification system |
| 03/08/2000 | EP0983210A1 Method of water treatment using zeolite crystalloid coagulants |
| 03/08/2000 | CN2367607Y Sea-water bitter-salt-water desalination machine |
| 03/08/2000 | CN1246448A Process for purifying high-turbidity water and equipment thereof |
| 03/08/2000 | CN1246447A Rapid treating technology for high-concentration industrial sewage |
| 03/07/2000 | US6033572 Sequentially treated through use of biological treatment means, chemical treatment means, and filtration means |
| 03/02/2000 | WO2000011329A1 Method and apparatus for purifying water solutions of glycol-based substances |
| 03/01/2000 | EP0914295B1 Process for treating the scrubbing water from the gas scrubbing process in an iron ore reduction plant |
| 03/01/2000 | CN1245783A Brewer's water treatment process by using aeration method |
| 02/29/2000 | US6030535 A reverse osmosis membrane module for separating magnetism-and ozone-pretreated salt water into permeated water and concentrated salt water; an electrodialysiser and evaporation; discharge nontoxic to fish and sea plants |
| 02/29/2000 | US6029479 Fine particle lint filter |
| 02/24/2000 | WO2000009821A1 Water circulation |
| 02/24/2000 | WO2000009452A1 A process for removing silver in the presence of iron from waste effluent |
| 02/23/2000 | EP0902759A4 Method and apparatus for removing metal ions and/or complexes containing metal ions from a solution |
| 02/23/2000 | CN2365211Y Rareearth magnetization ion water equipment |
| 02/23/2000 | CN2365210Y Rareearth magnetization beautifying ion water machine |
| 02/23/2000 | CN2365209Y Defluorine ultrafiltering water purifier |
| 02/23/2000 | CN1245150A Household water-purifying machine |
| 02/23/2000 | CN1049639C Method for treating heavy metal containing waste water by utilization of acorn |
| 02/22/2000 | US6027543 Method for removing a heavy metal from sludge |
| 02/17/2000 | WO2000007945A1 Method for processing mineralised water |
| 02/17/2000 | WO2000007700A1 Method for reducing scaling in electrodeionization systems |
| 02/17/2000 | DE19835458A1 Verfahren und Vorrichtung zur Reinigung von Regen- und/oder Mischwasser Method and apparatus for the purification of rain and / or mixing water |
| 02/17/2000 | DE19834945A1 Continuous biological purification and re-use of waste water containing surfactant, e.g. from laundry, involves adsorbing impurities and regenerating adsorbent suspension in bioreactor |
| 02/16/2000 | EP0979214A1 Device for dewatering a slurry |
| 02/16/2000 | CN2364032Y Multistage water treatment machine |
| 02/16/2000 | CN1049409C Synchronous intensified jet method of biological dephenolized mud mixed nutrient sewage |
| 02/10/2000 | WO2000006499A1 Point-of-use water treatment system |
| 02/10/2000 | WO1999048817A3 Water sanitizing system |
| 02/09/2000 | EP0978483A1 Process and apparatus for the purification of rain and/or mixed water |
| 02/09/2000 | EP0978479A2 Purification of waste water contaminated by heavy metals and other toxic substances |
| 02/09/2000 | EP0977712A1 Removal of hydrocarbons, mercury and arsenic from oil-field produced water |
| 02/09/2000 | CN2362849Y Four-function water purifier with straight through valve |
| 02/09/2000 | CN2362848Y Water purifier without substituting core |
| 02/09/2000 | CN1243807A Process for treating and recovering black liquid of alkaline paper-making |
| 02/08/2000 | US6022476 Disposing bio-suspension elements which provide supporting surfaces for growth of microorganisms within enclosure which is floating in body of water; intermettently introducing microorganism, agitating, aerating; removing treated water |
| 02/03/2000 | DE19834727A1 Pilotanlage für die Wasseraufbereitung Pilot plant for water treatment |
| 02/02/2000 | EP0976684A1 Pilot water treatment plant |
| 02/02/2000 | CN2361630Y Unpowered domestic sewage treatment apparatus |
| 02/02/2000 | CN2361629Y Device for preparing multi-energy oxygen-enriched mineralized water |
| 02/02/2000 | CN2361628Y Tap water purifier |
| 02/02/2000 | CN1243103A Method for purifying high-turbidity water, and apparatus thereof |
| 02/02/2000 | CN1243102A Technology and device for removing organic component from oil-field well-drilling waste water |
| 02/01/2000 | US6019901 Process for removing polyamine chelating agents form aqueous solutions |
| 01/27/2000 | WO2000003953A1 Water treatment apparatus and components |
| 01/26/2000 | CN2360406Y Energy saving purifying water tank |
| 01/26/2000 | CN2360405Y Water feeding improved structure of multifunctional water drinking machine |
| 01/26/2000 | CN1242719A Method for recovering and separating metals from waste streams |
| 01/25/2000 | US6017447 Oxygenated water cooler |
| 01/25/2000 | US6017433 Desalting aqueous streams via filled cell electrodialysis |
| 01/25/2000 | US6016977 Hand held shower head and filter housing |
| 01/25/2000 | CA2160465C Process and apparatus for the treatment of waste water |
| 01/20/2000 | WO2000003083A1 A process for concentrating soluble and colloidal substances in process waters |
| 01/20/2000 | WO2000002819A1 Ion exchange removal of metal ions from wastewater |
| 01/20/2000 | WO2000002817A1 Removing metal ions from wastewater |
| 01/20/2000 | WO2000002816A1 Activated carbon filter, ceramic filter element and water purification system comprising both filters |
| 01/20/2000 | WO2000002441A1 Improved method for separating liquid manure into a solid and a filtrate |
| 01/20/2000 | DE4306844C2 Verfahren zur kombinierten physikalisch-chemischen Reinigung von Wässern, die mit den Explosivstoffen 2,4,6-Trinitrotoluol, Hexahydro-1,3,5-trinitro-1,3,5-triazin und Octahydro-1,3,5,7-tetranitro-1,3,5,7-tetraocin verunreinigt sind Process for the combined physical-chemical purification of waters, with explosives 2,4,6-trinitrotoluene, hexahydro-1,3,5-trinitro-1,3,5-triazine and octahydro-1,3,5,7 contaminated tetra-nitro-1,3,5,7-tetraocin |
| 01/20/2000 | CA2337411A1 A process for concentrating soluble and colloidal substances in process waters |
| 01/19/2000 | EP0972001A1 Separation of heavy metals and materials for use in this |
| 01/19/2000 | EP0971858A1 Method for treating waste water, especially from and malt houses and breweries |
| 01/19/2000 | EP0971857A1 A system for purification of domestic household effluent |
| 01/19/2000 | CN2359282Y Treatment device for running water |
| 01/19/2000 | CN2359281Y Deep purification device for drinking water |
| 01/18/2000 | US6015486 Dispensing apparatus capable of avoiding variation in dispensed amount and improving a sanitary condition |
| 01/18/2000 | CA2079627C Separation of heavy metals from waste water of the titanium dioxide industry |
| 01/13/2000 | WO2000001626A1 Electrical household appliance for purifying water intermittently |
| 01/13/2000 | WO2000001625A1 Processing unit for an electrical household appliance for purifying water and corresponding household appliance |
| 01/13/2000 | WO2000001624A1 Electrical household appliance for purifying water intermittently or in portions |
| 01/13/2000 | WO2000001622A2 Method and installation for treating waste water from oil seed and cereal processing |
| 01/13/2000 | DE19830165A1 Separation of poly acid complexing agents from aqueous solution |
| 01/12/2000 | EP0970919A1 Apparatus for the disinfection of a water treatment unit |
| 01/12/2000 | EP0970020A1 Process for treating wastewater |
| 01/12/2000 | EP0757586A4 Improvements in electrodialysis including filled cell electrodialysis (electrodeionization) |
| 01/12/2000 | CN2358069Y Drinking purified supply device |
| 01/12/2000 | CN2358068Y High efficiency energy-saving sewage, drinking water treatment device |
| 01/12/2000 | CN1240770A Filter element of health-care water-drinking appliance and its water-drinking appliance |
| 01/11/2000 | US6013511 Precipitating metals or degrading xenobiotic organic compounds with membrane immobilized microorganisms |
| 01/06/2000 | WO2000000439A1 Method of treating waste water |
| 01/06/2000 | WO2000000434A1 Method and apparatus for purification and disinfection of liquids |
| 01/06/2000 | WO2000000273A1 Method of removing sulfate and/or metal ions from waters or wastewaters |
| 01/06/2000 | WO1998054290A9 Process and plant for treatment of distillery lees |
| 01/05/2000 | EP0968966A1 Method and device for oxidation of alkali- or metal-cyanides |
| 01/05/2000 | EP0775165B1 Dadmac/vinyl trialkoxysilane copolymers and their use in wastewater treatment |