| Patents for C02F 1 - Treatment of water, waste water, or sewage (145,124) |
|---|
| 08/15/1990 | CA2027544A1 Fluid treatment |
| 08/14/1990 | US4948980 Apparatus for irradiating media with UV-light |
| 08/14/1990 | US4948835 Process for producing water-soluble polyelectrolyte |
| 08/14/1990 | US4948516 Method of disposing of wastes containing heavy metal compounds |
| 08/14/1990 | US4948514 Method and apparatus for separating ions from liquids to produce separate diluted and concentrated effluents |
| 08/14/1990 | US4948513 Method for controlling overspray in paint spray booths |
| 08/14/1990 | US4948512 Multistep method for separating dissolved organic compounds from a solution |
| 08/14/1990 | US4948511 Solvent extraction with countercurrent flow of nonpolar, water-immiscible hydrocarbon mixture, burning contaminated stream |
| 08/14/1990 | US4948509 Using flotation for degassing and separation of bacterial particles |
| 08/14/1990 | US4948505 Quick-change filter cartridge and head therefor |
| 08/14/1990 | US4948499 Simplified method and apparatus for purification |
| 08/14/1990 | US4948489 Precipitation of heavy metal oxides; controlling water pollution |
| 08/14/1990 | CA2010088A1 Process and installation for biological treatment, e.g. by nitrification and/or denitrification, of an effluent including nitrated pollution |
| 08/14/1990 | CA1272559A1 Biocidal mixture |
| 08/13/1990 | CA2009801A1 Unique and effective separation technique for oil contaminated sludge |
| 08/10/1990 | CA2009697A1 Polymeric quaternary ammonium trihalides and use of polymeric quaternary ammonium trihalides as microbicides, sanitizers and disinfectants |
| 08/09/1990 | WO1990008845A1 Removal of nitric oxide from waste gases and recovery as nitric acid |
| 08/09/1990 | WO1990008741A1 Wastewater treatment process and apparatus for wastewater treatment |
| 08/09/1990 | WO1990008730A1 Process for removing fluoride from a wastewater and producing hydrofluoric acid therefrom |
| 08/09/1990 | DE3903608A1 High-performance filtration method |
| 08/09/1990 | DE3903549A1 UV light for the degradation of pollutants, in particular of halogenated hydrocarbons |
| 08/09/1990 | DE3903343A1 Process for waste water purification by ion exchanger resins |
| 08/09/1990 | DE3838701A1 Apparatus for neutralizing liquids |
| 08/09/1990 | CA2009543A1 Method and apparatus for mixing liquid and coagulant |
| 08/08/1990 | EP0381601A1 Flue gas purification process |
| 08/08/1990 | EP0381007A1 Process and installation for the anaerobic digestion of highly charged process waters |
| 08/08/1990 | EP0380962A2 Method and apparatus for obtaining ozone saturated water |
| 08/08/1990 | EP0380821A1 Process for phase separation in liquid manure |
| 08/08/1990 | EP0380644A1 Water conditioning device |
| 08/08/1990 | CN2060163U Combined soft water unit |
| 08/08/1990 | CN1044481A Low free formaldehyde melamine-formaldehyde detackifier and method of using |
| 08/08/1990 | CN1044446A Swirl-aeration purifying water equipment |
| 08/08/1990 | CA2007309A1 Method of sealing exposed top surface of relatively static body of liquid |
| 08/07/1990 | US4946600 Water repurification method of city water and its equipment |
| 08/07/1990 | US4946599 Apparatus and method for converting bottled water dispensers to continuous supply systems |
| 08/07/1990 | US4946593 Odorless and taste free |
| 08/07/1990 | US4946590 Clamp-on magnetic water treatment device |
| 08/07/1990 | US4946574 Electrolytic cells |
| 08/07/1990 | US4946559 Removal of dissolved volatile impurities from liquid |
| 08/07/1990 | US4946558 Water distilling apparatus |
| 08/07/1990 | US4946140 System for automatically feeding chemical liquids to cooling towers |
| 08/07/1990 | US4945992 Injecting an aqueous solution of chlorine dioxide under pressure into a well |
| 08/07/1990 | CA1272365A1 Faucet mounted purifier |
| 08/02/1990 | DE4002014A1 Purifying waste water, esp. from dye synthesis - by ozonisation at alkaline pH, blowing through air at acid pH, and pptn. with alkaline earth salt |
| 08/02/1990 | DE3902152A1 Device for purifying waste water, in particular protein-containing waste water |
| 08/01/1990 | EP0380359A1 Biocidal compositions and treatments |
| 08/01/1990 | EP0380299A1 Method of improving langelier index of city water and an apparatus therefor |
| 08/01/1990 | EP0380228A2 Water treatment |
| 08/01/1990 | EP0380171A1 Agent and process for the cleaning of irrigation or water-distribution systems used in, for example, agriculture and horticulture |
| 08/01/1990 | EP0379997A1 Process for enhancing the efficiency of a water purification plant |
| 08/01/1990 | EP0379820A2 Apparatus for dissolving ozone in a fluid |
| 08/01/1990 | EP0259408B1 Arrangement for treatment of water |
| 08/01/1990 | CN2059917U United treatment device for threephase fluidifying cation exchange and decarburization |
| 08/01/1990 | CA2008396A1 Processes for the purification of flue gases |
| 08/01/1990 | CA2001385A1 Method and apparatus for obtaining ozone saturated water |
| 07/31/1990 | US4944886 Method of sewage treatment |
| 07/31/1990 | US4944875 Plural filter tube sequential distribution apparatus |
| 07/31/1990 | CA2007800A1 Method for removing toxic metals from agricultural drain water |
| 07/31/1990 | CA1272310A1 Method for controlling mollusks |
| 07/31/1990 | CA1272309A1 Process for the decolorization of pulp mill process streams |
| 07/31/1990 | CA1272123A1 Disinfectant compounds and disinfection process applicable to infected liquids and surfaces |
| 07/28/1990 | WO1990008558A1 Stabilized sterilizing or disinfecting halogen containing composition, method and apparatus |
| 07/28/1990 | CA2045687A1 Stabilized sterilizing or disinfecting halogen containing composition, method and apparatus |
| 07/27/1990 | CA2008732A1 Biocidal compositions and treatments |
| 07/26/1990 | WO1990008107A1 Electrochemical cells |
| 07/26/1990 | WO1990007974A1 Filter apparatus |
| 07/26/1990 | WO1990007964A1 Distillation apparatus with combined manifold/support assembly |
| 07/26/1990 | DE3933798A1 Testing water treatment systems for reducing scale formation - by pumping the water through a capillary in temp. controlled medium and observing blockage formation |
| 07/26/1990 | DE3901812A1 Process for the waste water-free disposal of the scrubbing liquid arising in exhaust gas purification and laden with pollutants and apparatus for carrying out this process |
| 07/25/1990 | EP0379261A1 A process for cleaning soil |
| 07/25/1990 | EP0379204A1 Liquid oxidizing method and apparatus |
| 07/25/1990 | EP0379116A2 Electrodeionization apparatus and module |
| 07/25/1990 | EP0379083A1 Method of extracting phenols from aqueous solutions |
| 07/25/1990 | EP0379041A1 Process for removing inorganic pollutants from liquids |
| 07/25/1990 | EP0379040A1 Apparatus and process for waste water purification |
| 07/25/1990 | EP0378994A1 Process for the purification of waste waters containing aromatic nitro compounds |
| 07/25/1990 | EP0378946A1 Process for cooling and drying warm humid air and installation for carrying out this process |
| 07/25/1990 | EP0378888A1 Destruction of nitrophenols |
| 07/25/1990 | EP0378716A1 Sterilizer unit for fluid media and process |
| 07/25/1990 | CN2059659U Electrolyzer for acid or alkali |
| 07/24/1990 | US4943378 Sewage treatment, cationic polymers, shear stability |
| 07/24/1990 | US4943377 Method for removing dissolved heavy metals from waste oils, industrial wastewaters, or any polar solvent |
| 07/24/1990 | US4943371 Apparatus for reducing pitting in copper water pipes |
| 07/24/1990 | US4943360 Process for recovering nitric acid and hydrofluoric acid from waste pickle liquors |
| 07/24/1990 | US4943357 Photodegradation of metal chelate complexes |
| 07/24/1990 | US4943353 Control for modular water distiller |
| 07/19/1990 | DE3900731A1 Apparatus for waste water purification by floculation and flotation |
| 07/19/1990 | CA2006232A1 Extraction of phenols from aqueous solutions |
| 07/18/1990 | WO1990008108A1 Method and device for separating mercury from an aqueous medium |
| 07/18/1990 | EP0378521A1 Water purification process |
| 07/18/1990 | EP0378451A1 Sulfamic acid-based antiscaling composition for activated carbon, antiscaling process making use of said composition |
| 07/18/1990 | EP0378319A2 Low free formaldehyde melamine-formaldehyde detackifier and method of using |
| 07/18/1990 | EP0378288A1 Water treatment apparatus |
| 07/18/1990 | EP0378166A2 Method and means for optimizing batch crystallization for purifying water |
| 07/18/1990 | EP0377832A2 Process for the treatment of biomasses, e.g. sewage sludge, manure, etc. |
| 07/18/1990 | EP0377713A1 Arrangement and process for purifying waste water |
| 07/18/1990 | EP0377603A1 Clarification process. |
| 07/18/1990 | CN2059436U Advection-type precipitator |
| 07/18/1990 | CN2059435U High-efficient energy-saving water processor |
| 07/18/1990 | CN1043921A Scavenger for arsenic and heavy metal waste water |