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