| Patents for C02F 1 - Treatment of water, waste water, or sewage (145,124) |
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| 06/09/1999 | CN2322963Y Sewage treatment apparatus |
| 06/09/1999 | CN2322962Y Backflush drinking water purifier with slide valve |
| 06/09/1999 | CN2322961Y 便携式饮水净化器 Portable water purifier |
| 06/09/1999 | CN1219158A Oxygenating apparatus, method for oxygenating water therewith and applications thereof |
| 06/09/1999 | CN1219157A Substances and method for production of water suitable for aquariums or garden ponds |
| 06/09/1999 | CN1219139A Method and reactor for electrochemical conversion of material e. g. soot particles being insoluble in fluid |
| 06/09/1999 | CN1218815A Polystyrene sulfonyl hydrazino dithio formate resin |
| 06/09/1999 | CN1218771A Method for treating waste water containing raw oil |
| 06/09/1999 | CN1218770A Light oxidation equipment and method for water treatment system of semiconductor device |
| 06/09/1999 | CN1218769A Electromechanical integrated fresh water collector |
| 06/09/1999 | CN1218767A Mixer for ozone and water |
| 06/09/1999 | CN1043561C Method and apparatus for processing waste gas |
| 06/09/1999 | CN1043560C Microfilter plate and process for making it |
| 06/08/1999 | US5910462 Heating zironia-silica to a liquid melt, quenching to effect spinodal decomposition; annealing to transform zirconia to monoclinic form, leaching out silica phase; three dimensional porous interpenetrating network; alkali resistant supports |
| 06/08/1999 | US5910254 Rupturing algal cells; introducing the aqueous suspension into a froth flotation column, generating fine bubbles, adsorbing the ruptured cells onto the bubbles to form alga agglomerates; extraction of carotenoids |
| 06/08/1999 | US5910253 Removal of metal ions from aqueous solution |
| 06/08/1999 | US5910251 Wastewater treatment process and apparatus for high flow fluoride removal |
| 06/08/1999 | US5910250 Baffle for conversion of fine bubbles to coarse while filtering with a vertical skein of hollow fibers |
| 06/08/1999 | US5910249 Screening raw sewage; filtering the screened effluent through a microfiltration membrane for removal of suspended solids without an intermediate long term biological treatment stage; efficiency |
| 06/08/1999 | US5910244 Adaptable control valve for fluid treatment system |
| 06/08/1999 | US5910237 Process for recovering organic hydroxides from waste solutions |
| 06/08/1999 | US5910234 Recovery of alcohols from process wastewater from production of silicone resin |
| 06/08/1999 | US5910233 Distilled and then passed through layer of soil taken from an area adjoining the source of natural mineral water |
| 06/08/1999 | CA2140371C Polymeric aluminium silicate-sulphate and process and apparatus for producing same |
| 06/05/1999 | CA2251480A1 Waste treatment of metal plating solutions |
| 06/03/1999 | WO1999026887A1 Process and apparatus for electrocoagulative treatment of industrial waste water |
| 06/03/1999 | WO1999026886A1 A method for purifying water, in particular ground water, under anaerobic conditions, using a membrane filtration unit, a device for purifying water, as well as drinking water obtained by using such a method |
| 06/03/1999 | WO1999026885A1 Compositions and methods for adsorption and remediation of organic compounds |
| 06/03/1999 | WO1999026884A1 Solar energy distillation apparatus |
| 06/03/1999 | WO1999026883A1 A water filtration vessel |
| 06/03/1999 | WO1999026716A1 Hydraulic magnetically actuated seat valve, especially for motor vehicle braking systems |
| 06/03/1999 | WO1999015462A8 Method and device for sewage clarification |
| 06/03/1999 | WO1999007642A9 Process and apparatus for water decontamination |
| 06/03/1999 | CA2255216A1 Water dissolvable bioremediation device and the method of use |
| 06/03/1999 | CA2223331A1 Tank for removing unabsorbed gas from a mixture of unabsorbed gas and liquid |
| 06/02/1999 | EP0919523A2 Method for removing colloidal and other suspended particles from lightly polluted water |
| 06/02/1999 | EP0919269A2 Feeder insert for a tubular cartrige filter |
| 06/02/1999 | EP0697012B1 Method for photocatalytic decontamination |
| 06/02/1999 | EP0690825B1 Catalytic treatment process for effluents containing organic and inorganic compounds, preferably from epichlorhydrine production |
| 06/02/1999 | DE19836431A1 Prevention of buildup of lime scale on the cathode of electrolysis cells using hard water |
| 06/02/1999 | DE19750988A1 Apparatus to determine extent to which ion-exchange unit is exhausted |
| 06/02/1999 | CN2321775Y 水生成器 Water generator |
| 06/02/1999 | CN2321774Y Multi-purpose water converting continuous ozone sterilizing water device |
| 06/02/1999 | CN2321773Y Laser electronic scale remover |
| 06/02/1999 | CN2321511Y High-efficient energy-saving water purifier |
| 06/02/1999 | CN1218041A Desalination of aqueous sulph-namide solutions |
| 06/02/1999 | CN1218010A Technology of treatment of papermaking wastewater |
| 06/02/1999 | CN1218009A Activated water containing silver ions and preparing method therefor |
| 06/02/1999 | CN1043537C Aqueous suspensions of colloidal particles, preparation and use of the suspensions |
| 06/01/1999 | US5908790 Methods for removing heavy metals from aqueous solutions and for analysis |
| 06/01/1999 | US5908580 Mixture containing alum and boron compound |
| 06/01/1999 | US5908560 Treatment of hazardous wastewater |
| 06/01/1999 | US5908559 Method for recovering and separating metals from waste streams |
| 06/01/1999 | US5908558 Method and apparatus for removing contaminants from fluid columns |
| 06/01/1999 | US5908557 Process for the removal of pentavalent arsenic from water |
| 06/01/1999 | US5908553 Water purifier with adjustable volume in dwell passage |
| 06/01/1999 | US5908550 Water reclamation system for a vehicle wash system |
| 06/01/1999 | US5907887 Floor washing apparatus |
| 05/27/1999 | WO1999025656A1 Water treatment compositions |
| 05/27/1999 | WO1999025655A1 Waste-water, sludge and wet mud disposal system |
| 05/27/1999 | WO1999025496A1 Closed-loop pressure washing system and method |
| 05/27/1999 | WO1999025479A1 Device and method for separating a heterogeneous mixture |
| 05/27/1999 | WO1999025471A1 Pulsed corona discharge apparatus with radial design |
| 05/27/1999 | WO1999025455A1 Method and apparatus for automatic adjustment of halogen production in a water treatment system |
| 05/27/1999 | WO1999025449A1 Purification composite and device and method of making and using same |
| 05/27/1999 | DE19750811A1 Filter mat for the filtration and sorptive cleaning of water that seeps through the ground during, e.g. rainfall |
| 05/27/1999 | DE19749746A1 Contaminated ground water treated by exposure to ultrasonic emitters |
| 05/27/1999 | CA2309750A1 Closed-loop pressure washing system and method |
| 05/26/1999 | EP0917900A1 Multi-stage water filter system |
| 05/26/1999 | EP0917541A1 Biodegradable complexing agents for heavy metals |
| 05/26/1999 | EP0917521A1 Method for in-situ immobilisation of heavy metals and/or sulphate in water-containing zones |
| 05/26/1999 | EP0917520A1 Self-regulating water purification composition |
| 05/26/1999 | EP0917516A1 Irrigation type oil skimmer and method for skimming oil |
| 05/26/1999 | EP0917488A1 A water treatment cartridge and a water filter jug fitted with such a cartridge |
| 05/26/1999 | CN2320621Y Magnetic and mineralization water cup |
| 05/26/1999 | CN2320620Y Health tap water cleaner |
| 05/25/1999 | US5907037 Sulfonated cellulose; for removal of heavy metal ions from aqueous solutions |
| 05/25/1999 | US5907034 With same affinity to ethylenediamine tetraacetic acid and diethylenetriamine pentaacetic acid as to their complexes with manganese, cadmium, zinc, copper, yttrium, or lead |
| 05/25/1999 | US5906960 Removing environmental contaminants in a single process step using crosslinked humic acid or derivatives |
| 05/25/1999 | US5906749 Method for recovering metals from solutions |
| 05/25/1999 | US5906748 Efficient remediation of contaminated fine-grained subterranean soils |
| 05/25/1999 | US5906722 Electrolysis in multicompartment cell using hydrogen gas and ion exchange membranes |
| 05/25/1999 | US5906714 Method for treating emulsified liquids |
| 05/25/1999 | US5906572 Liquid hydrocarbon sorbing and solidifying pillow |
| 05/25/1999 | CA2058623C Method of purifying lacustrine water and filthy water purification boat |
| 05/20/1999 | WO1999024382A1 Method for separating an organic compound from an aqueous medium |
| 05/20/1999 | WO1999024372A1 Apparatus for dewatering previously-dewatered municipal waste-water sludges using high electrical voltage |
| 05/20/1999 | WO1999024371A1 Device for thickening liquids or sludges |
| 05/20/1999 | WO1999024369A2 Amperometric halogen control system |
| 05/20/1999 | WO1999024368A1 Compositions and methods for treating water |
| 05/20/1999 | WO1999024367A1 Polylactate release compounds and methods of using same |
| 05/20/1999 | WO1999024366A1 Means for chemical water treatment |
| 05/20/1999 | WO1999024365A1 Composition and process for the removal of the phosphate ion content of waters |
| 05/20/1999 | WO1999024364A1 Process for removing silica from wastewater |
| 05/20/1999 | WO1999024363A1 Method and device for the production of pure water |
| 05/20/1999 | WO1999008719A3 Sterilization apparatus utilizing catholyte and anolyte solutions |
| 05/20/1999 | DE19801066C1 Heating system has its gas water condensate acidity minimised by monitoring the gas temperature |
| 05/20/1999 | DE19749757A1 Vorrichtung zur Eindickung von Flüssigkeiten oder Schlämmen Apparatus for thickening liquids or sludges |
| 05/20/1999 | DE19740401C1 Process breaks down industrial particulate or gaseous wastes in foam |
| 05/19/1999 | EP0916621A2 Water having a superior ability to disperse oil and fats |