Patents for C02F 1 - Treatment of water, waste water, or sewage (145,124)
06/1987
06/30/1987US4676909 Process for recovering noble metals from their cyanide complexes
06/30/1987US4676908 Waste water treatment
06/30/1987US4676907 Biological filtration process
06/30/1987US4676906 Hybrid high rate anaerobic treatment process
06/30/1987US4676896 Faucet mounted purifier
06/30/1987US4676882 Improving water quality; continuous process; ion-exchanging membrane between cylindical electrodes
06/30/1987US4676878 Apparatus and method for electronic decomposition of water into aqueous free radicals and free electrons
06/25/1987DE3545988A1 Detackifying agent for waste water from paint-spraying cabins
06/25/1987DE3545190A1 Process for producing utilisable products downstream of a flue-gas desulphurisation
06/24/1987EP0226344A2 Insoluble composition for removing silver from a liquid medium
06/24/1987EP0226295A2 Method for prevention of metallic precipitate reoxidation/redissolution in aqueous systems
06/24/1987EP0226284A1 Water recirculating apparatus and method
06/24/1987EP0226216A2 Distilling apparatus
06/24/1987EP0225965A2 Method of treating waste water and equipment therefor
06/24/1987CN85109661A Mini-device for producing mineral water
06/23/1987US4675116 Dewatering solids suspensions with controlled flocculant addition
06/23/1987US4675115 Method and device for removing hydrogen sulfide from well water with in situ adsorbent regeneration
06/23/1987US4675114 Process for dewatering municipal and other sewage sludges
06/23/1987US4675112 Flocculation and using ignaceous rock as a decantation promot er and substrate for bacteria growth
06/23/1987US4675111 Solution waste treatment module
06/23/1987US4675090 Electrodialysis using a membrane comprising an animated graft polymer support
06/23/1987CA1223375A1 Treating cyanide-containing effluents
06/23/1987CA1223275A1 Quaternary ammonium disinfectants
06/23/1987CA1223172A1 Encapsulated solid microbiocidal article
06/23/1987CA1223171A1 Protracted release microbiocidal article for aqueous systems
06/23/1987CA1223170A1 Microbiocidal article for aqueous systems
06/19/1987DE3544303A1 Device for collecting and scooping off foam formed by flotation
06/19/1987DE3543661A1 Process for water treatment upstream of a reverse osmosis plant
06/18/1987WO1987003516A1 Rapid dissolving polymer compositions and uses therefor
06/18/1987WO1987003503A1 Treatment of emulsions
06/17/1987CN86203520U Waste water treatment equipment for textile dyeing by high-voltage electrolytic coacevation
06/16/1987US4673704 Equilibratine agents
06/16/1987US4673527 Water treating agents entrapped in soluable polymer matrix
06/16/1987US4673513 Adjustment of chlorine level, stabilizing chlorine level with cyanuric acid or ammelide
06/16/1987US4673511 Acrylamide diallyl dimethyl ammonium chloride copolymers as improved dewatering acids for mineral processing
06/16/1987US4673510 Process for the disposal of settled sludge derived from a biological sewage-disposal plant
06/16/1987US4673509 Adding phosphonium compound
06/16/1987US4673507 Fluid treatment process and apparatus
06/16/1987US4673505 Inorganic azides extend activity of waste treatment bacteria
06/16/1987US4673494 Water treatment apparatus
06/16/1987EP0225793A2 Use of ion exchange resin mixtures in cation exchange processes
06/16/1987EP0225526A2 Device for treating a liquid with gas or for mixing liquids
06/16/1987CA1222943A1 Process and apparatus for purification of contaminated groundwater
06/11/1987DE3643444A1 Water purification flocculation tank for restricted installation spaces
06/11/1987DE3628786A1 Process for the continuous multiple-stage final purification of coal-containing waste waters
06/11/1987DE3543223A1 Method for destroying microbes
06/10/1987EP0224812A2 Process for working up mother liquors resulting from the preparation of benzothiazole derivatives
06/10/1987EP0224801A2 Sewage oxygenating device
06/10/1987EP0224762A2 Reaction cell
06/10/1987EP0224743A2 Process for removing cations from aqueous solutions by the addition of crandallite
06/10/1987EP0224648A2 Sewage oxygenating device
06/10/1987CN86105710A Method of treating waste water and equipment therefor
06/09/1987US4671882 Phosphoric acid/lime hazardous waste detoxification treatment process
06/09/1987US4671881 Producing fuel materials
06/09/1987US4671879 Process for reducing the nitrate content in water
06/09/1987US4671874 Electrokinetics; sludges, landfill operations
06/09/1987US4671869 Filter device
06/09/1987US4671863 Reversible electrolytic system for softening and dealkalizing water
06/09/1987US4671351 Fluid treatment apparatus and heat exchanger
06/09/1987US4671077 Ice-maker heat pump using water supercooling
06/09/1987CA1222718A1 Desalinization device
06/09/1987CA1222714A1 Method for removing insoluble sulfide pads at oil/water interfaces
06/04/1987WO1987003276A1 Apparatus for rediffusion of oxygen
06/04/1987WO1987003275A1 Electronic control and dosing system for desalinators
06/04/1987WO1987003261A1 Marine biofouling reduction
06/04/1987DE3542160A1 Apparatus for separating off amalgam particles
06/04/1987DE3542134A1 Apparatus for separating off fine solid particles from waste water
06/04/1987DE3542114A1 Centrifuge for separating off fine solid particles from waste water
06/03/1987EP0224357A2 Acid recovery from an aqueous acid/salt solution
06/03/1987EP0224233A2 Apparatus for the separation of small solids particles
06/03/1987EP0224232A2 Solid bowl centrifuge for the separation of small solids particles
06/03/1987EP0224160A2 Process for the removal of hydrocarbons from waste waters or ground water
06/03/1987EP0223860A1 Germicidal and purifying agent for drinking water
06/03/1987CN85108552A Treatment of chlorhydric acid pickling waste containing iron
06/02/1987USH283 Chemical technique for sequestering ammonia off-gassing from solidified waste
06/02/1987US4670360 Fuel cell
06/02/1987US4670180 Metal scavenger and metal scavenging process
06/02/1987US4670160 Metal scavenger and metal scavenging process
06/02/1987US4670159 Process for obtaining purified water from wet sludges and slurries of solid materials
06/02/1987US4670158 Precipitation coagulation of latex by controlled additions of lime and phosphoric acid
06/02/1987US4670157 Enhanced oil recovery; injection wells
06/02/1987US4670150 Mixing with softener and precipitated hardness impurities then removal a segment and filtration
06/02/1987US4670029 Dearating water used to flood bore
05/1987
05/27/1987EP0223569A2 Filtering system
05/27/1987EP0223563A2 Swimming pool water treatment
05/27/1987EP0223476A1 Heat exchange method and apparatus
05/27/1987EP0223411A2 Ozone purification system and apparatus
05/27/1987EP0222895A1 Method and apparatus for conducting chemical reactions at supercritical conditions
05/27/1987EP0146597B1 Plant for the ozonation of a fluid
05/27/1987DE3635585A1 Electrochemical solar cell for water hydrolysis and desalination using a photoactive electrode made of organic materials
05/26/1987US4668747 Preparation of water soluble cationic acrylamide polymer and product using weak acid to adjust pH
05/26/1987US4668404 Process for reducing color contamination of influent water
05/26/1987US4668403 Polyquaternary ammonium compounds
05/26/1987US4668402 System for treating fluids
05/26/1987US4668389 Cleaning device arranged in front of the inlet to a waterway
05/26/1987US4668369 Reciprocating electrode cleaner for electric field liquid treater
05/26/1987US4668250 Process for continuously removing and recovering respectively a gas dissolved in a liquid, particularly ammonia from aqueous ammonia waste water
05/26/1987US4668124 Disposal of material containing vanadium as landfill
05/26/1987CA1222200A1 Deaeration of water
05/21/1987WO1987003111A1 Water treatment apparatus