Patents
Sitemap › C02 - Treatment of water, waste water, sewage, or sludge › C02F - Treatment of water, waste water, sewage, or sludge › C02F 1 - Treatment of water, waste water, or sewage
Patents for C02F 1 - Treatment of water, waste water, or sewage (145,124)
12/1990
12/11/1990US4976864 Anaerobic digestion of hydrolysed effluents
12/11/1990US4976863 Wastewater treatment process
12/11/1990US4976857 Filter element and fabrication methodology
12/11/1990US4976842 Oxidant generator
12/11/1990US4976824 Water distillation and aeration apparatus
12/11/1990CA1277785C Flocculation processes
12/11/1990CA1277658C Anionically modified polysaccharides, process for their preparation and the use thereof
12/09/1990WO1990015024A1 Removal of contaminants
12/09/1990CA2060508A1 Removal of contaminants
12/08/1990CA2018408A1 Composition including a thermoplastic silicone copolymer and an iodine compound used, once formed, in water treatment
12/08/1990CA2017689A1 Method of removing amines
12/07/1990WO1990014874A1 Device for separating light liquids
12/07/1990CA2016805A1 Water treatment device
12/06/1990DE3918213A1 Sepn. of solid particles suspended in liq. - involves tank with inlet pipe with curved guide vanes
12/06/1990DE3918025A1 Flotationsapparat Flotation apparatus
12/05/1990EP0401089A1 Device for clarifying liquids, particularly: water, fruit juice, grape mash and similar
12/05/1990EP0401048A1 Aqueous solution for waste water treatment
12/05/1990EP0400431A2 Separation unit
12/05/1990EP0400252A1 Apparatus for separating substances from the surface of a fluid
12/05/1990EP0400129A1 Polyelectrolytes modified by reaction with anhydride group containing copolymers and their use as flocculents
12/05/1990CN2066857U High efficient electronic descaling instrument
12/05/1990CN2066856U High efficient household water magnetizing device
12/05/1990CN2066855U Electronic scale proventing device
12/05/1990CN2066763U High-efficient energy-saving multi-effect distilled water making mahcine
12/04/1990US4975379 Using crypt, crown compounds
12/04/1990US4975203 Alkaline solution; demetallization
12/04/1990US4975199 Purifying the waste from contaminated with detergent, biological and/or radioactive material by filtration and ion exchanging
12/04/1990US4975198 Process for the removal of organic contaminants from soils and sediment
12/04/1990US4975195 Heating and separating the solid and liquid portion, condensing the gases; sewage treatment; pollution control
12/04/1990US4975194 Heating and mixing with a mixture containing oxygen gas and circulated vent gas
12/04/1990US4975185 Portable water purification system
12/04/1990US4975171 Bipolar electrolytic cell
12/04/1990US4975162 Removal of cadmium from phosphoric acid-containing solutions
12/04/1990US4975154 Water purification method and apparatus with conductivity sensing controls
12/04/1990US4975111 Antialgal compositions comprising diphenylethers and isothiazolones, methods of controlling algae, and coating compositions comprising the antialgal compositions
12/04/1990US4975109 Bactericide, fungicide and algaecide
12/04/1990CA1277449C Flocculation processes
12/04/1990CA1277448C Process for the removal of elemental oxygen by means of a reducing agent in a coolant circulating in one or more closed circulations, and apparatus for the removal of elemental oxygen
12/04/1990CA1277247C Sorbing apparatus
12/04/1990CA1277198C Synergistic biocide of 2-(p-hydroxyphenol) glyoxylohydroximoylchloride and methylene bis thiocyanate
11/1990
11/29/1990WO1990014312A2 Process and apparatus for the purification of contaminated water by activated ozone
11/29/1990WO1990014159A1 Oil spill clean-up material
11/28/1990EP0399809A1 Process for solute recovery utilizing recycle liquids having a stored concentration profile
11/28/1990EP0399658A2 Purification of fluids
11/28/1990EP0398968A1 Water purification system
11/28/1990EP0383805A4 A low pressure distillation apparatus
11/28/1990EP0105339B1 System of ionized oxygen allotrope gas water purification and method and apparatus therefor
11/28/1990CN2066441U Device for disposing industrial sewage
11/28/1990CN2066440U Rotating cylinder type recoverer for heavy metla
11/28/1990CN1047269A Reclaiming system for ion exchange resin and products thereof
11/28/1990CN1010555B Management of photoresist materials containing waste solution
11/27/1990US4973639 Clay flocculation
11/27/1990US4973409 Treatment of aqueous systems
11/27/1990CA1277045C Removal of dioxins, pcb's and other halogenated organic compounds from wastewater
11/27/1990CA1276796C Aqueous system treated with a biocide
11/26/1990CA2017538A1 Process for solute recovery utilizing recycle liquids having a stored concentration profile
11/23/1990WO1990014310A1 Effluent treatment
11/23/1990CA2057872A1 Effluent treatment
11/22/1990EP0398860A2 Dispersant compositions for treating oil slicks on cold water
11/22/1990EP0398766A1 Ozone decomposing
11/22/1990EP0398765A1 Ozone decomposition
11/22/1990EP0398234A1 Improved process for the removal of cyanide from wastewaters
11/22/1990EP0398022A1 Method for the separation of oil in water emulsions
11/22/1990EP0397953A1 Process for sludge dewatering
11/22/1990EP0397864A1 Agglutination reaction vessel
11/22/1990EP0397742A1 Porous article impregnation resin composition, and system for treating impregnation process waste water.
11/22/1990DE4003429A1 Simultaneous purificn. of waste water and waste air - with same activator, pref. weak lye
11/22/1990DE3916209A1 Recovery of solvents from mixts. - by absorption in a liq. absorber contg. one or more benzyl-aromatics
11/22/1990DE3916131A1 Cheap oil-absorbing fibrous cleaning material prodn. from waste paper - by soaking in water, loosening and removing filler, pulverising and drying
11/22/1990DE3915930A1 Removing harmful substances from fluid - by passing fluid through polymer, lipoid or oil dispersed in medium, and removing with microorganisms
11/22/1990CA2017304A1 Portable water purification devices using low density activated carbon
11/22/1990CA2014626A1 Removal of trace contamination from water
11/21/1990CN2066023U Sterilizing water clarifier
11/21/1990CN2066022U Multi-functional activated water-making device
11/21/1990CN2065943U Self-washing water strainer
11/21/1990CN1010473B Method for continuous treatment of acid waste water contg v and cr
11/21/1990CN1010472B Decolorization method of steam cooking black liquor of paper-making, ramie and refining cotton
11/20/1990US4971775 Process for removal of nickel from effluent containing EDTA
11/20/1990US4971703 Treatment method for emulsified petroleum wastes
11/20/1990US4971702 Selenium adsorption process
11/20/1990US4971687 Apparatus for water treatment
11/20/1990US4971675 Electrolyzer for purification of fluids
11/19/1990CA2017005A1 Process for the removal of cyanide from wastewaters
11/15/1990WO1990013521A1 Method for the simultaneous transport and pasteurization of sewage sludge
11/15/1990WO1990013520A1 Method of processing water, in particular bath water
11/15/1990WO1990013343A1 Water repellent fabric containing an absorbing agent for collecting at the water surface non miscible fluid substances
11/15/1990WO1990011264A3 Process for manufacturing pelletized materials for use in chemical reactions in industry or agriculture
11/14/1990EP0397342A1 Catalysts
11/14/1990EP0397184A1 Prevention of biofouling of reverse osmosis membranes
11/14/1990EP0396928A2 Portable water purification system
11/14/1990EP0396790A1 Process for the removal of nitrate and organic pollutants from effluents
11/14/1990CN2065618U 饮用水净化器 Drinking water purifier
11/14/1990CN2065617U Multi core type water magnetizer
11/14/1990CN2065616U Low-position integral vacuum oxygen remover
11/14/1990CN2065615U Multi-function power-driven water treating device
11/14/1990CN2065445U Magnetic therapeutic thermos bottle
11/14/1990CN1046881A 蒸馏水机 Distilled water machine
11/13/1990US4970239 Antifouling
11/13/1990US4970005 Catalysis, oxidation, purification
11/13/1990US4970003 Water softening process with preservice rinse
1 ... 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 ... 1452