| Patents for C02F 9 - Multistep treatment of water, waste water or sewage (41,429) |
|---|
| 01/31/1990 | EP0352891A1 Process for treatment of water containing volatile and toxic compounds |
| 01/31/1990 | EP0352779A2 Mobile potable water production device |
| 01/30/1990 | US4897202 Continuous suction, circulation, reuse of treated aqueous detergent solution |
| 01/30/1990 | US4897199 Adsorption on an inorganic substrate; combustion to carbon dioxide and water |
| 01/30/1990 | US4897196 Two-stage batch wastewater treatment |
| 01/30/1990 | US4897187 Portable water filtration apparatus |
| 01/25/1990 | WO1990000527A1 Apparatus for treating a fluid |
| 01/24/1990 | EP0352219A2 Pretreatment of industrial waste water in a biological purification process |
| 01/24/1990 | CN1039005A Medium temperature hydrolysis reactor |
| 01/23/1990 | US4895668 Carboxylated surfactant-containing lubricants, production and use |
| 01/17/1990 | EP0351148A1 Apparatus for treating a fluid |
| 01/11/1990 | WO1990000157A1 Process for decomposition of metal-cyano complexes using microbial enzymes |
| 01/11/1990 | DE3822953A1 Process for regenerating an iron- and/or zinc-containing hydrochloric acid bath |
| 01/10/1990 | EP0349708A1 Process for water purification |
| 01/10/1990 | EP0349671A1 Process for separating heavy metals from waste water by sulfide precipitation using calcium polysulfide |
| 01/03/1990 | EP0349348A1 Process for decomposition of metal-cyano complexes using microbial enzymes |
| 01/03/1990 | EP0349035A2 Medium temperature hydrolysis reactor |
| 01/02/1990 | US4890563 Treatment of waste and rotary kiln therefor |
| 12/27/1989 | CN1006199B Process for the decolorization |
| 12/14/1989 | WO1989012029A1 A process for removing nitrogen compounds from raw water |
| 11/29/1989 | EP0343998A1 Water treatment systems |
| 11/28/1989 | US4883601 Process for purifying an aqueous, hydrogen sulfide-scrubbing solution |
| 11/21/1989 | US4882072 Method and apparatus for treating bodies of water |
| 11/21/1989 | US4882061 Filter apparatus |
| 11/15/1989 | EP0341792A1 Process for treating spent pickling bath solutions |
| 11/14/1989 | US4880535 Water supply station with multiple water storage reservoirs |
| 11/08/1989 | EP0340567A1 Process for the biological degradation of complex persistent organic matter in waste water |
| 11/02/1989 | EP0339025A1 Improved process and equipment for purifying treatment and utilization of waste-waters from the dairy industry |
| 11/01/1989 | CN1036748A Portable water purifying devices |
| 10/31/1989 | US4877524 Apparatus for treating bodies of water |
| 10/31/1989 | US4877519 Reactor and heat exchanger system for cyanide waste water treatment |
| 10/26/1989 | DE3812544A1 Process for the purification of waste waters from coal gasification |
| 10/24/1989 | US4876201 Method for biodegrading PCBS |
| 10/24/1989 | US4876014 Activated carbon, ion exchange resin |
| 10/19/1989 | WO1989009536A1 Method and apparatus for producing ultrapure water |
| 10/19/1989 | DE3811591A1 Process for treating waste waters |
| 10/18/1989 | EP0337455A1 Device and method for reducing volume of aqueous waste effluents |
| 10/17/1989 | US4874530 Method for treating photographic processing waste solution |
| 10/17/1989 | US4874521 Pulp mill effluent color removal process |
| 10/10/1989 | US4873065 Flue gas purification process |
| 09/27/1989 | EP0333796A1 Process and device for processing hydroxide sludges |
| 09/27/1989 | CN1035879A Process and apparatus for recovery and recycling conveyor lubricants |
| 09/21/1989 | DE3806985A1 Process and apparatus for disposing of dirty water arising from facade cleaning |
| 09/20/1989 | EP0333218A2 Process for the removal of metal ions from aqueous systems |
| 09/19/1989 | US4867875 Combined water purifying beverage maker |
| 09/13/1989 | EP0332447A1 Selective removal of metal cations from aqueous effluent solutions |
| 09/08/1989 | WO1989008083A1 Portable water-purifying devices |
| 09/08/1989 | WO1989008082A1 Devices for treating waste water |
| 09/07/1989 | DE3805908A1 Reactor for gas-liquid reactions |
| 09/07/1989 | DE3805906A1 Process and apparatus for detoxifying cyanide- and heavy metal-containing solutions |
| 09/06/1989 | EP0331296A1 Carcass chiller and sterilizer |
| 09/06/1989 | EP0331136A1 Installations for waste water disposal |
| 09/06/1989 | CN1035276A Process for purification of sewage |
| 08/30/1989 | EP0330028A1 Process and apparatus for the detoxification of solutions containing cyanides and heavy metals |
| 08/30/1989 | EP0329886A1 Process and apparatus for recovery and recycling conveyor lubricants |
| 08/29/1989 | US4861489 Controlling respiratory bacteria |
| 08/29/1989 | US4861482 Selenium detoxification |
| 08/24/1989 | WO1989007636A1 Process for treating coal pyrolysis effluent |
| 08/24/1989 | DE3805722C1 Process for purifying glass industry waste waters |
| 08/23/1989 | EP0328821A1 Two-stage wastewater treatment process |
| 08/17/1989 | DE3804573A1 Process for treating a solution, in particular for wastewater purification |
| 08/17/1989 | DE3803905A1 Verfahren zur behandlung von bei der kohlepyrolyse anfallendem abwasser Process for the treatment of waste water accumulating in the coal pyrolysis |
| 08/15/1989 | US4857950 Wash water reservoiring method and apparatus therefore |
| 08/15/1989 | US4857207 Process for reducing the phenol content in phenol-containing waters |
| 08/15/1989 | US4857206 Method for treating, spent dryfilm stripping and developing solutions |
| 08/15/1989 | US4857204 Method of an apparatus for sterilizing aqueous media, more particularly drinking water |
| 08/15/1989 | US4857198 Process for treatment of water containing volatile and toxic compounds |
| 08/15/1989 | US4857184 Self-contained water treatment system and enclosure |
| 08/15/1989 | US4856559 Faucet providing and utilizing air gap |
| 08/09/1989 | EP0323970A4 Sewage treatment. |
| 08/09/1989 | CN1034525A Decolorization method of steam cooking black liquor of paper-making, ramie and refining cotton |
| 08/08/1989 | US4855065 Apparatus and process to separate and remove extraneous matter from a liquid stream |
| 08/02/1989 | EP0325720A1 Method for treating a cyano-containing waste liquid |
| 07/27/1989 | WO1989006636A1 Process and apparatus for recovery and recycling conveyer lubricants |
| 07/26/1989 | CN1034187A Comprehensive treatment of tanning sewage by sulfuric acid process |
| 07/25/1989 | US4851131 Oxidation with transition metal catalysts |
| 07/20/1989 | DE3800616A1 Process for eliminating heavy metals from aged, alkaline waste solutions, solutions, sludges, suspensions and waste solids, with processing of heavy metals to give marketable products or for safe landfilling |
| 07/19/1989 | EP0324149A1 Process for the disposal of waste waters from a hardening plant by means of evaporation |
| 07/19/1989 | EP0323970A1 Sewage treatment. |
| 07/18/1989 | US4849100 Portable water purifier |
| 07/13/1989 | WO1989006245A1 Porous article impregnation resin composition, and system for treating impregnation process waste water |
| 07/13/1989 | WO1989006220A1 Water purification system |
| 07/12/1989 | EP0323821A1 Process for treating glyphosate process waste streams |
| 07/11/1989 | US4846978 Recovery of metals from solutions containing chelants |
| 07/11/1989 | CA1257413A1 Apparatus for clarification of water |
| 07/05/1989 | CN1004692B Treatment method and technology for treating sewage from dyeing and printing industry |
| 07/04/1989 | US4844815 Stabilization of mercury-containing waste |
| 07/04/1989 | US4844796 Full water treatment apparatus for use in soft drink dispensing system |
| 06/29/1989 | WO1989005779A1 Apparatus for producing fresh water from radioactively, chemically or biologically contaminated water |
| 06/28/1989 | EP0321989A1 Method for purifying resin containing waste liquor in the manufacture of cellulose pulp |
| 06/27/1989 | US4843007 Aerobic treatment |
| 06/27/1989 | US4842715 Novel technique for rendering oily sludges environmentally acceptable |
| 06/27/1989 | US4842688 Method of removing macromolecular organic dissolved and colloidal material from wood processing industry effluents |
| 06/21/1989 | EP0321068A1 Apparatus and process to separate and remove extraneous matter from a liquid stream |
| 06/20/1989 | US4840735 By forming copper and iron precipitates with impurities; controlling ph |
| 06/15/1989 | DE3740831A1 Process and appliance for treating effluents containing fine mercury-containing particles |
| 06/14/1989 | EP0319740A1 Detoxication process for waste waters containing elementary mercury |
| 06/13/1989 | US4839067 Process for lubricating and cleaning of bottle conveyor belts in the beverage industry |
| 06/13/1989 | US4839057 Water treatment system |
| 06/08/1989 | DE3739896A1 Appliance for treating industrial effluents or of leachate from tips |