| Patents for C02F 1 - Treatment of water, waste water, or sewage (145,124) |
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| 02/03/1993 | EP0525166A1 Composition and methods for removing or preventing biofilm. |
| 02/03/1993 | EP0525125A1 Method for stripping metals in solvent extraction |
| 02/03/1993 | EP0525011A1 Portable water purification system. |
| 02/03/1993 | EP0524967A1 Oxidation chamber |
| 02/03/1993 | CN2126681Y Magnetic bar for water bottle |
| 02/03/1993 | CN1068613A Treating method for black and white liquor of coda pulp |
| 02/03/1993 | CN1068550A Sewage treating method and device |
| 02/03/1993 | CN1068549A Method for purifiction of water |
| 02/02/1993 | US5183944 Method of doping aqueous solutions with acrolein in biocidally effective concentration |
| 02/02/1993 | US5183577 Process for treatment of wastewater containing inorganic ammonium salts |
| 02/02/1993 | US5183576 Waste water treatment by adding homopolymer of acryoxyethyl trimethyl ammonium chloride or methacryoxyethyl trimethyl ammonium chloride |
| 02/02/1993 | US5183575 Methods for the flocculation of coal fines and insoluble metals in coal mine waters |
| 02/02/1993 | US5183572 Removal of ink and other particles from wash solutions such as cleaning component of printing press blankets to render reusable |
| 02/02/1993 | US5183565 Apparatus and process for treating water |
| 02/02/1993 | US5183563 System for removal and disposal of minor amounts of organics from contaminated water |
| 02/02/1993 | US5183562 Apparatus for coagulating treatment |
| 02/02/1993 | US5183546 Optimized multiporous carbon bed for electrochemical filters |
| 02/02/1993 | CA1313363C Process and a device for the treatment, by means of ozone, of feed water for reverse osmosis |
| 01/28/1993 | DE4124915A1 Improved processing waste water - by combining wash water contg. active washing cpds. with rinsing water, filtering and processing by flotation for re-use |
| 01/28/1993 | DE4124843A1 Purifying raw drinking water loaded with organic matter - by exposure to long wave UV radiation |
| 01/28/1993 | DE4124779A1 Surface water treatment - converts sediment surface to mineral layer, to separate mud from water |
| 01/28/1993 | DE4124621A1 Immobilising contaminants, esp. heavy metals, in effluent gases, liq(s). and solids - by converting harmful substances into highly insoluble complex cpds. with jarosite type structure |
| 01/27/1993 | EP0524917A1 A process and system for clarifying wash-up waters |
| 01/27/1993 | EP0524825A1 Method of treating waste liquor |
| 01/27/1993 | EP0524674A1 Method for removing hydrocarbon products from the surface of an acqueous medium |
| 01/27/1993 | EP0524493A2 Electrolytic process for reducing the organic content of an aqueous composition and apparatus therefore |
| 01/27/1993 | EP0524455A1 Centrifuge |
| 01/27/1993 | EP0524245A1 Process and apparatus for pathogen reduction in waste. |
| 01/27/1993 | EP0417166B1 Encased pool chemical tablet with domed ends |
| 01/27/1993 | CN2126632Y Multifunctional civil water tank |
| 01/27/1993 | CN1068389A Processing method and storage structure for waste drilling fluid |
| 01/26/1993 | US5182331 Dewatering sludge; water clarification |
| 01/26/1993 | US5182251 Aminoalkylphosphonic acid containing ligands attached to solid supports for removal of metal ions |
| 01/26/1993 | US5182030 Regeneration of adsorbents using advanced oxidation |
| 01/26/1993 | US5182029 Waste from printed circuit manufacture |
| 01/26/1993 | US5182027 Treating with an oxidizing agent and biocide |
| 01/26/1993 | US5182023 Process for removing arsenic from water |
| 01/26/1993 | US5182018 Protein absorbing aquarium filter element and method |
| 01/26/1993 | US5182014 Method and apparatus for increasing flotation cell recovery and grade of complex copper-containing ores |
| 01/26/1993 | US5182007 Stain preventing method |
| 01/26/1993 | US5181991 Solar water purification device |
| 01/26/1993 | US5181399 Laundry waste water treatment and wash apparatus |
| 01/26/1993 | US5181396 Crystallization, melting, freezing, evaporation and absorption |
| 01/24/1993 | CA2074003A1 Apparatus for conveying, comminuting and mixing materials comprising/not comprising solid matter |
| 01/21/1993 | WO1993001497A2 Monitor for growth and deposit |
| 01/21/1993 | WO1993001136A1 Enhanced oxidation treatment of contaminated effluents and groundwaters |
| 01/21/1993 | WO1993001135A1 Apparatus and process for removal of dissolved metal forms |
| 01/21/1993 | WO1993001134A1 Method of producing pure water, system therefor and cleaning method |
| 01/21/1993 | WO1993001133A1 System for supplying pure water and cleaning method therefor |
| 01/21/1993 | WO1993000976A1 Water treatment system |
| 01/21/1993 | WO1993000831A1 Green juice or dry powder thereof |
| 01/21/1993 | WO1992019212A3 Glycine anhydride dimethylol as a biocide and preservative |
| 01/21/1993 | WO1992009877A3 Ftir remote sensor apparatus and method |
| 01/21/1993 | DE4124171A1 Complex alkaline earth salt prepn. of poly:aluminium:chloride(s) - comprises reacting suspension of basic alkaline earth metal salts with soln. of poly:aluminium chloride of specified average empirical formula |
| 01/21/1993 | DE4123912A1 Oil and water sepn. assembly - moves condensation from thermal reactor without eddies into a collection vessel for any remaining oil to be skimmed from the surface |
| 01/21/1993 | DE4123885A1 Purifying waste or raw water for drinking - by adding calcium aluminate sulphate to liq. contg. organic impurities or dissolved phosphate or heavy metals then sepg. liq. from prod. |
| 01/21/1993 | DE4123827A1 Membrane filter system - feeds part of recovered watery phase back to cleaning system for workpieces |
| 01/21/1993 | DE4123651A1 Selective removal of nitrate ions from water or aq. solns. - by ion exchange using succession of columns with weakly acidic cation exchanger then weakly basic anion exchanger before entering column filled with buffer |
| 01/21/1993 | DE4123543A1 Water magnetic field system - has a field coupler for each magnet group for domestic water pipes |
| 01/21/1993 | DE4123285A1 Paint and varnish spray assembly - has electrode in water circuit to give HT electrostatic field to prevent explosion |
| 01/21/1993 | DE4119725A1 UV irradiation equipment esp. for waste water treatment in open channel - in which transparent protective tube ends, through which the electrical leads pass, are held above water surface by floats |
| 01/21/1993 | DE4117040A1 Verfahren zum trennen von gemischen und fluessigkeiten unterschiedlicher dichte und adhaesion gegenueber nicht saugenden feststoffoberflaechen A method for separating mixtures of liquids of different densities and and adhesion to non-absorbent feststoffoberflaechen |
| 01/21/1993 | CA2113339A1 Monitor for growth and deposit |
| 01/20/1993 | EP0524159A2 Method and associated plant for the disposal of the liquid from the bottom of dumping tanks for solid urban refuse |
| 01/20/1993 | EP0524039A1 Process and apparatus for water treatment |
| 01/20/1993 | EP0523990A1 Coolant recycling apparatus |
| 01/20/1993 | EP0523883A1 A process for the treatment of saline effluents |
| 01/20/1993 | EP0523454A1 Apparatus for physical treatment of liquids |
| 01/20/1993 | EP0323509B1 Process for preparing cationic, water-soluble resin and water-treating agent containing said resin |
| 01/20/1993 | CN2126584Y Treating machine for waste water containing chromium |
| 01/20/1993 | CN2126583Y Oil removing and collecting device |
| 01/20/1993 | CN2126582Y Supor purity three chemical water purifier |
| 01/20/1993 | CN1068090A Method for treatment of waste sacrose liquid |
| 01/20/1993 | CN1068089A Method for treatment of waste printing water and special apparatus thereof |
| 01/20/1993 | CN1068080A Zebra mussel control |
| 01/19/1993 | US5180704 Oil sorption with surface-modified rubber |
| 01/19/1993 | US5180503 In-situ vapor stripping for removing volatile organic compounds from groundwater |
| 01/19/1993 | US5180500 Oxidation to urea which is decomposed with hypohalite |
| 01/19/1993 | US5180499 Process for removal of solid, chemical and bacterial waste from water |
| 01/19/1993 | US5180497 Method for decolorization of waste water |
| 01/19/1993 | US5180491 Apparatus for removal of iron from drinking water |
| 01/19/1993 | US5180403 Evacuation and introducing an inert gas |
| 01/18/1993 | CA2047258A1 Removal of contaminants and recovery of metals from waste solution |
| 01/14/1993 | DE4220105A1 Lime-scale and rust preventing device for water pipes - comprises filter pot contg. bar magnet which are combined in simple manner saving both space and cost |
| 01/14/1993 | DE4121276A1 Verfahren zur herstellung sulfathaltiger basischer polyaluminiumchlorid-loesungen Process for the preparation of sulfate-alkaline solutions of polyaluminumchloride |
| 01/13/1993 | EP0522946A1 Process and installation for water denitrification using metallic iron |
| 01/13/1993 | EP0522856A1 Purification of solutions |
| 01/13/1993 | EP0522805A1 Vehicle mounted apparatus and method for determining suitability of effluent water for treatment for reuse |
| 01/13/1993 | EP0522334A1 A method of treating BCTMP/CTMP wastewater |
| 01/13/1993 | EP0522232A2 Electrode for metal removal from metal ion containing solutions |
| 01/13/1993 | EP0522140A1 Electrochemical desensitization process |
| 01/13/1993 | CN1067871A Surface water treating method and device |
| 01/13/1993 | CN1067869A Chemical coagulation-extraction method for purification and utilization of waste water from washing wool |
| 01/13/1993 | CN1067868A Method and device for clarifying bath water |
| 01/13/1993 | CA2071737A1 Electrode for extracting metals from a metallic solution |
| 01/12/1993 | US5178796 Corrosion resistance with oxygen scavengers |
| 01/12/1993 | US5178778 Apparatus and method for separating immiscible liquid mixtures |
| 01/12/1993 | US5178776 Heating, acidification and chlorinating oxidation under acid conditions, separation and recovering soild phase |
| 01/12/1993 | US5178775 Hydrogen peroxide, sulfur dioxide, sulfites of group 1a or 2a |
| 01/12/1993 | US5178774 Dissolving and coagulation of diallyldimethylammonium chloride polymer |