| Patents for C02F 1 - Treatment of water, waste water, or sewage (145,124) |
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| 07/15/1981 | EP0031872A2 Solid/liquid separation through liquid vaporization and condensation, and apparatus therefor |
| 07/14/1981 | US4278549 To enhance flow properties and reduction of scale |
| 07/14/1981 | US4278548 Control of biological growth in reverse osmosis permeators |
| 07/14/1981 | US4278539 Method for removing heavy metals from aqueous liquids |
| 07/14/1981 | US4278527 Removing heavy metal complexes |
| 07/14/1981 | US4278522 Apparatus for treating contaminated water |
| 07/14/1981 | US4278521 Electrochemical cell |
| 07/14/1981 | US4278104 System for controlling the number of waste liquid disposal units in operation |
| 07/14/1981 | CA1105159A1 Process for the treatment of waste water |
| 07/14/1981 | CA1105158A1 Removal of silica from mixed bed demineralizer |
| 07/14/1981 | CA1105084A1 Method and apparatus for amperemetric measurement of free chlorine in a solution |
| 07/09/1981 | WO1981001863A1 Automatic washing machine or dishwasher |
| 07/09/1981 | WO1981001840A1 Improvements in apparatus for use in the magnetic treatment of liquids |
| 07/09/1981 | WO1981001839A1 Device for preventing deposit of sediments in uptake tubes of an evaporator |
| 07/08/1981 | EP0031535A2 Process for the cyclic regeneration of water softening apparatus and programme-controlled apparatus therefor |
| 07/08/1981 | EP0031395A2 Method of preparing and purifying nearly saturated lime solutions and lime saturator for carrying out this method |
| 07/07/1981 | US4277346 Adsorption by solid solution of calcium compound and aluminum oxide or hydroxide |
| 07/07/1981 | US4277345 Method for the recovery of uranium dissolved in sea water |
| 07/07/1981 | US4277341 Water treatment discharge means |
| 07/07/1981 | US4277333 Portable water filtration system |
| 07/07/1981 | US4277332 Water purifier |
| 07/07/1981 | US4276732 Device for killing moss |
| 07/07/1981 | CA1104350A1 Separation of cobalt and nickel by solvent extraction |
| 07/01/1981 | EP0031308A2 Automatic linen or dish-washing machine |
| 07/01/1981 | EP0031267A2 Carbon or graphite modified fibrous percolating porous electrode and its use in producing electrochemical reactions |
| 06/30/1981 | US4276269 Precipitation of ferric silicate from zinc sulfate solution |
| 06/30/1981 | US4276264 Device for sterilizing liquid media by steam |
| 06/30/1981 | US4276256 Method for preventing bacterial passage into sterile fluid systems |
| 06/30/1981 | US4276198 Oxidation cocatalyst system comprising transition metal compound, nitric acid and hydrogen bromide or iodide |
| 06/30/1981 | US4276180 Antiscaling |
| 06/30/1981 | US4276179 Removing halogenated hydrocarbons from aqueous media by utilizing a polyolefinic microporous adsorbent |
| 06/30/1981 | US4276178 Fluid flow |
| 06/30/1981 | US4276177 High efficiency filtration with impurity concentration and ultrafiltration rejection flow recirculation |
| 06/30/1981 | US4276176 Water purification system |
| 06/30/1981 | US4276160 Treatment with ions |
| 06/30/1981 | US4276155 Method for recycling the water used in a process for recovering glass from municipal waste |
| 06/30/1981 | US4276124 Distillation system for sea water |
| 06/30/1981 | US4276122 Solar distillation apparatus |
| 06/30/1981 | US4276094 Cleaning oil-contaminated vessels with α-emulsans |
| 06/30/1981 | EP0027447A4 Gas diffuser, aerator, or sparger apparatus and method. |
| 06/30/1981 | CA1104065A1 Method of processing waste water using an absorbent and regenerating same |
| 06/30/1981 | CA1103969A1 Method and apparatus for controllably recycling the solids content of the effluent from an asbestos- cement poducts forming plant |
| 06/30/1981 | CA1103928A1 Method for energy utilization in producing synthesis gas and recovering unconverted carbon |
| 06/25/1981 | WO1981001720A1 Method and device for removing floating liquid impurities,particularly oil,from a flowing water surface |
| 06/24/1981 | EP0030733A1 Process and apparatus for removing dissolved iron from water |
| 06/24/1981 | EP0030697A1 Counter-current process for the treatment of liquids with ion-exchange materials and ion-exchange filter for carrying out the process |
| 06/24/1981 | EP0030556A1 Controlled release of trace nutrients |
| 06/24/1981 | EP0030535A1 Method and device in manufacturing foamed urea formaldehyde material to be used as a sorbent. |
| 06/23/1981 | US4275194 Deodorant, sterilizer or disinfectant |
| 06/23/1981 | US4275020 Pressurized |
| 06/23/1981 | US4274970 Purification with uv radiation |
| 06/23/1981 | US4274968 Process for the purification of water |
| 06/23/1981 | US4274966 Method and device for purifying sewage |
| 06/23/1981 | US4274959 Apparatus for dissolving air in water and subsequent reduction of the water surface tension in flotation systems |
| 06/23/1981 | US4274945 Carboxylated polyacrylamide flocculants |
| 06/23/1981 | CA1103404A1 Spill control composition and use thereof |
| 06/17/1981 | EP0030361A1 Process for polishing glass objects by sulphuric and fluorhydric acid |
| 06/17/1981 | EP0030339A1 Process for concentrating aqueous solutions of temperature-sensitive substances |
| 06/16/1981 | US4273732 Method and apparatus for raising an aeration apparatus for liquids |
| 06/16/1981 | US4273660 Purification of water through the use of ozone and ultraviolet light |
| 06/16/1981 | US4273658 Thickener control process |
| 06/16/1981 | US4273631 Process for the continuous recovery of gold and other metals from sea water |
| 06/16/1981 | US4273579 Process for treating liquid containing Au-CN compound |
| 06/16/1981 | US4273189 Method and apparatus for recovering natural gas from geopressured salt water |
| 06/16/1981 | CA1103375A1 Treatment of biodegradable material |
| 06/16/1981 | CA1103228A1 Oil-adsorbing composition for treating oil- contaminated water |
| 06/16/1981 | CA1103172A1 Cartridge filter |
| 06/16/1981 | CA1103171A1 Compact apparatus for continuous treatment of aqueous effluents containing emulsified hydrocarbons |
| 06/10/1981 | EP0030106A1 A method for the selective removal of ferric ions from an aqueous solution, selective metal-chelating resins for use therein, and a method for their preparation |
| 06/10/1981 | EP0030017A1 Liquid aqueous inorganic flocculating agent |
| 06/10/1981 | EP0030011A1 Process for cleaning the interior surfaces of hollow articles |
| 06/09/1981 | US4272686 Apparatus for converting hydraulic energy to electrical energy |
| 06/09/1981 | US4272379 Transferring of excess waste to collection vessel, overflow with recirculation |
| 06/09/1981 | US4272375 Long vertical shaft bioreactor of simplified design |
| 06/09/1981 | US4272016 Integrated sewage treatment system |
| 06/09/1981 | CA1102935A1 Hydro-carbonaceous pollution separation process in a hydro-organic environment |
| 06/09/1981 | CA1102934A1 Method of transmitting liquid between separated activation compartments for biological purification of water and apparatus for performing the same |
| 06/09/1981 | CA1102804A1 Perfluoroalkylthioethyl ether derivatives |
| 06/09/1981 | CA1102502A1 Germicidal agent |
| 06/03/1981 | EP0029625A1 Process for the purification of water |
| 06/03/1981 | EP0029600A1 Process for the separation of fluids by permeation |
| 06/02/1981 | US4271326 Method of processing organic waste into useful products |
| 06/02/1981 | US4271053 Quaternary ammonium graft copolymers for use as flocculants and method of preparing same |
| 06/02/1981 | US4271028 Process for purifying effluents containing proteins |
| 06/02/1981 | US4271027 Sewage treatment system and process |
| 06/02/1981 | US4271026 Control of activated sludge wastewater treating process for enhanced phosphorous removal |
| 06/02/1981 | US4271015 Water treatment apparatus |
| 06/02/1981 | US4271013 Method and apparatus for removing biodegradable compounds from wastewater |
| 06/02/1981 | US4270981 Solar distillation apparatus |
| 06/02/1981 | US4270565 Inline dispersal valve |
| 06/02/1981 | US4270279 Method for drying and sterilizing sewage sludge |
| 06/02/1981 | CA1102457A1 Ion exchange process for desalination |
| 06/02/1981 | CA1102456A1 Method of removing metallic impurities from sewage sludge |
| 06/02/1981 | CA1102346A1 Process for producing a functionalized silica by reacting silica with a silane and a polyamine |
| 06/02/1981 | CA1102275A1 Breaking oil-in-water emulsion using porous iron electrode |
| 06/02/1981 | CA1102206A1 Microbicidal compositions for industrial use |
| 05/27/1981 | EP0029222A2 Integrated flotation and filtration device and method for combined flotation and filtration |
| 05/26/1981 | US4269717 Boiler additives for oxygen scavenging |
| 05/26/1981 | US4269690 Electrolytic apparatus for reclaiming dissolved metal from liquid |
| 05/26/1981 | US4269664 Liquid treating and distillation apparatus |