Patents for C02F 1 - Treatment of water, waste water, or sewage (145,124) |
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08/13/1987 | WO1987004695A1 Process for treating waste water |
08/13/1987 | DE3603602A1 Process for preventing the formation of CaSO4 deposits on the semipermeable membrane used in reverse osmosis |
08/12/1987 | EP0231527A2 Method of removing silica from water |
08/12/1987 | EP0231505A1 Antimicrobial agent |
08/12/1987 | EP0231432A2 Cross-flow microfilter |
08/12/1987 | EP0163693B1 Deactivation of microorganisms by an oscillating magnetic field |
08/11/1987 | US4686066 Method for the separation of oil-in-water emulsions |
08/11/1987 | US4686037 Faucet attachment, replaceable cartridge |
08/11/1987 | US4686036 Sterilization of drinking and bath water; efficient gas feed |
08/11/1987 | CA1225302A1 Dewatering of mineral slurries |
08/06/1987 | DE3603094A1 Stabilised flocculant and precipitant for water prepurification |
08/06/1987 | DE3602702A1 Process and device for increasing the solids of moderately dewatered sewage sludges by burnt lime or other additives |
08/05/1987 | EP0231100A2 Water cleaning system |
08/05/1987 | EP0230894A2 Method of an apparatus for water treatment |
08/05/1987 | EP0230737A1 Membrane pervaporation process for obtaining a chlorine dioxide solution |
08/04/1987 | US4684494 Ultrafiltration device in a pressurized water nuclear reactor |
08/04/1987 | US4684479 Microbubbles by shaking glycerides and sterol esters in water or oil; echocardiograms |
08/04/1987 | US4684472 Precipitation of waste chromium compounds utilizing an aqueous sulfide solution |
08/04/1987 | US4684471 Process for water purification, and a filter for carrying out the process |
08/04/1987 | US4684469 Two component biocidal process |
08/04/1987 | US4684464 Water, purification |
08/04/1987 | US4684461 Apparatus for the treatment, in particular softening and/or complete desalination of water |
08/04/1987 | CA1225083A1 Annular cylindrical tablet dissolving system for continuous flow constant concentration dispensing |
07/30/1987 | WO1987004422A1 Process and device for treating an aqueous liquid |
07/30/1987 | DE3602325A1 Process for purifying various waste waters produced in lead crystal finishing |
07/30/1987 | DE3602324A1 Process for the purification of waste waters produced in lead crystal grinding |
07/29/1987 | EP0229798A1 Electrode unit to be used for purification of emulsions and polluted waters, especially oil-bearing waters, by means of electrolysis. |
07/29/1987 | CN86206538U Device of dissolved air floatation and discharge with uniform vibration |
07/29/1987 | CN86203543U Dispensing equipment with float-controlled valve for sewage treatment |
07/28/1987 | US4683066 Anionic flocculant for dewatering steel mill sludges |
07/28/1987 | US4683065 Oxygen demand reduction, treatment with alumina catalyst |
07/28/1987 | US4683064 Process for decreasing the nitrate content in water |
07/28/1987 | US4683054 Appliance for purifying water |
07/28/1987 | US4683039 Chlorine dioxide generation and reaction, electrolysis |
07/28/1987 | CA1224891A1 Wet oxidation system |
07/22/1987 | EP0229624A2 Apparatus for removal of floating sewage from the surface of liquids |
07/22/1987 | EP0229414A2 Apparatus for purifying water, particularly salt water, by means of reverse osmosis |
07/22/1987 | EP0229150A1 Apparatus for desalinating salt water by membrane distillation. |
07/22/1987 | EP0229145A1 Removing selenium from water |
07/22/1987 | CN86205607U Industrial drain water processing unit by means of evaporating and concentrating |
07/21/1987 | US4681697 Process for producing solid aluminum chloride compositions |
07/21/1987 | US4681687 Use of alkali metal nitrites to inhibit H2 S formation in flue gas desulfurization system sludges |
07/21/1987 | US4681684 Useful as either inlet sweep or outlet tee |
07/21/1987 | US4681682 Air flotation clarifier |
07/21/1987 | US4681680 Device for the selective and continuous recovery of hydrocarbons present in the form of a sheet at the surface of an aqueous medium |
07/21/1987 | US4681677 Water processor having automatic shutoff and bypass means |
07/21/1987 | CA1224375A1 Hydrocarbon solvent-based dispersant formulation and its use in the dispersion of viscous oil spills |
07/16/1987 | DE3639993C1 Appliance for the treatment of liquid manure |
07/16/1987 | DE3637686A1 Process and apparatus for treating sludge water |
07/16/1987 | DE3600849A1 Clean water storage vessel for reverse osmosis plant |
07/16/1987 | DE3600772A1 Process for the elimination of chlorinated hydrocarbons |
07/16/1987 | DE3600484A1 Ozonization device |
07/16/1987 | DE3600406A1 Process and process arrangement for the intake and partial air saturation of untreated water for flotation plants |
07/15/1987 | EP0228957A1 Process for extraction of organic compounds from their solutions or from aqueous suspensions |
07/15/1987 | EP0228868A2 Copolymers and their use |
07/15/1987 | EP0228831A2 Process for treating a liquid involving cation exchange and selective removal of nitrate ions from the liquid, and ion exchange resin mixtures suitable for use therein |
07/15/1987 | EP0228637A2 Acrylamide and dimethylaminopropylacrylamide copolymers as flocculants and process for dewatering sewage sludge by means of these flocculants |
07/15/1987 | EP0228586A2 Dosing device for a finely particled pourable material in a reaction mixture |
07/15/1987 | EP0228497A1 A process for water purification, and a filter for carrying out the process |
07/15/1987 | EP0228396A1 Arrangement for the flocculation of flocculable substances, particularly for the purification of effluents from deinking installations for used paper processing. |
07/15/1987 | EP0139001B1 Boiler installation |
07/15/1987 | CN86207113U Coarsely granulating device |
07/15/1987 | CN86206839U Automatic chemicals dosing device for sterilizing water |
07/14/1987 | US4680127 Glyoxal |
07/14/1987 | US4680126 Separation and recovery of reusable heavy metal hydroxides from metal finishing wastewaters |
07/14/1987 | US4680116 To remove impurities from water supply system; bleaching agent, adhesive smell |
07/14/1987 | US4680114 Water purification apparatus |
07/14/1987 | US4680090 Distilled water from seawater |
07/09/1987 | EP0218608A4 Low-foaming compositions. |
07/09/1987 | EP0207951A4 Osmotic concentration by membrane. |
07/08/1987 | EP0228139A1 Regulation process of an electrodialysis device, and electrodialysis installation |
07/08/1987 | EP0228104A2 Process for removal of iron cyanide complex |
07/08/1987 | EP0228086A2 Process for removing toxic organic materials from weak aqueous solutions thereof |
07/08/1987 | EP0227893A2 Method of removing metal contaminants from solutions |
07/08/1987 | EP0227733A1 A distillation apparatus |
07/08/1987 | EP0227657A1 Method at water supply and sewerage system and system for water supply and sewerage |
07/08/1987 | CN86206163U Physically-chemically purifying water-processing machine |
07/08/1987 | CN86205115U Water-purifying device |
07/08/1987 | CN85107973A Method and installation of microfoam formation by mist partitioning |
07/07/1987 | US4678844 Chelate, crosslinked polyethyleneimine resin having 2-hydroxy benzoyl group |
07/07/1987 | US4678771 On sealing membrane to retain hydrocarbon gases or liquids |
07/07/1987 | US4678587 Desalting sea water |
07/07/1987 | US4678586 Automatically controlling feeding of alkaline solution |
07/07/1987 | US4678585 Flocculation of red muds |
07/07/1987 | US4678584 Method of removing heavy metal from wastewater streams |
07/07/1987 | US4678583 Purification of solute by hydration of added material, solvent extraction or adsorption |
07/07/1987 | US4678571 Water purifier |
07/07/1987 | US4678565 Purified water storage system with accumulator tank and diaphragm responsive valves |
07/02/1987 | DE3606908A1 Device for reversing the polarity of the biological radiations of liquids |
07/02/1987 | DE3546274A1 Process for rendering sewage sludge hygienic by adding powdered hydrated lime, and a device for carrying out the process |
07/01/1987 | EP0227291A1 Process for drilling geothermal wells with removal of H2S |
07/01/1987 | EP0227266A1 Orally operable water filter |
07/01/1987 | EP0226787A2 Process for treating sludges containing heavy metals |
07/01/1987 | EP0226715A2 Process and apparatus for the biological denitrification of water |
07/01/1987 | EP0226667A1 Process for reducing the nitrate content in water |
07/01/1987 | EP0226605A1 Process and device for multiple-phase processing of aqueous liquids |
07/01/1987 | CN86108307A Method for the treatment of impure water |
07/01/1987 | CN85109400A Osmotic concentration by membrane |
06/30/1987 | US4676913 Coal liquor clarification with water-soluble, high molecular weight polymers having low concentration of cationic moieties |
06/30/1987 | US4676910 Substituting a portion of the sodium with potassium |