| Patents for C02F 9 - Multistep treatment of water, waste water or sewage (41,429) |
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| 02/08/1994 | US5284589 Process for the treatment of effluent |
| 02/03/1994 | WO1994002680A1 Hydrocyclone photo-reactor |
| 02/03/1994 | WO1994002423A1 Method and apparatus for controlling microorganisms |
| 02/03/1994 | WO1994002421A1 Microbial mediated method for soil and water treatment |
| 02/03/1994 | WO1994002410A1 BOILER OPERATION WITH DECREASED NOx AND WASTE WATER DISCHARGE |
| 02/03/1994 | CA2140885A1 Boiler operation with decreased no and waste water discharge |
| 02/02/1994 | EP0581157A1 Water purification method and apparatus |
| 02/02/1994 | EP0581090A2 Method of treating metal-containing sludges |
| 02/01/1994 | US5282977 Separation of heavy metals from waste water of the titanium dioxide industry |
| 02/01/1994 | US5282967 Using hydrogen fluoride |
| 01/29/1994 | CA2080939A1 Fluid treatment process using dynamic microfiltration and ultrafiltration |
| 01/27/1994 | DE4239870C1 Conversion ion exchange plant for the recovery of metals from solns. - with compressed air diaphragm pump and pump stroke counter system |
| 01/25/1994 | US5281341 Sludge treatment process |
| 01/25/1994 | US5281335 Treating raw wastes in multicompartment submersive reactor with anaerobic and anoxic and aerobic environments, the treatment including nitrification and denitrification, discharging |
| 01/25/1994 | US5281309 Portable water purification system |
| 01/23/1994 | CA2100496A1 Mobile waste treatment apparatus |
| 01/20/1994 | WO1994001368A1 Process and system for purifying waste water |
| 01/20/1994 | CA2139412A1 Process and system for purifying waste water |
| 01/19/1994 | EP0579136A1 Process for treating the flushing water coming from the cleaning of equipment for smoking meat products |
| 01/19/1994 | EP0290488B1 Treatment of waste and a rotary kiln therefor |
| 01/18/1994 | US5279748 Circulating through electrolytic sand filter containing bactericide, algaecide |
| 01/18/1994 | US5279740 Ground contamination remediation process |
| 01/11/1994 | US5277775 System for treatment of photographic wastewater effluent |
| 01/06/1994 | WO1994000393A1 Materials handling and separation method for wastewater |
| 01/05/1994 | EP0577031A1 Method for gasifying and disinfection and device for simultaneously carrying out |
| 01/05/1994 | EP0576752A1 Water purifying system |
| 01/05/1994 | DE4307046A1 Car wash water cleaner - has container and sepn. systems to recirculate water without sludge basins and purificn. plant |
| 01/04/1994 | US5275737 Method for treating fluids |
| 01/04/1994 | US5275735 Method and apparatus for dissolving gas in liquid, e.g., in wastewater collection and transmission systems |
| 01/04/1994 | US5275734 Chemical pre-treatment and biological destruction of propylene carbonate waste streams effluent streams to reduce the biological oxygen demand thereof |
| 12/29/1993 | EP0575359A1 Purification of waste streams |
| 12/29/1993 | CN1079921A Apparatus for treatment of liquids of different specific gravities or treatment of gas and liquids |
| 12/29/1993 | CN1023310C Method for treating waste water containing discards from filature |
| 12/28/1993 | US5273663 Oxidative removal of aqueous cyanide under acidic conditions |
| 12/28/1993 | US5273662 Process for treating impregnation process waste water |
| 12/28/1993 | US5273661 Method for processing aqueous wastes |
| 12/23/1993 | WO1993025481A1 Process and apparatus for purifying streams |
| 12/23/1993 | CA2136869A1 Process and apparatus for purifying streams |
| 12/22/1993 | CN1023208C Process and equipments for treating waste liquor of red nitric acid |
| 12/21/1993 | US5272091 Water purification method and apparatus |
| 12/21/1993 | US5271837 Drinking water filtration system |
| 12/21/1993 | US5271830 Water treatment installation for a tangential filtration loop |
| 12/15/1993 | EP0573525A1 Method for removing and/or recovering mercury |
| 12/15/1993 | CN2149389Y Composition equipment for wastewater treatment |
| 12/15/1993 | CN1079450A Separating closed circular water treating system for swimming pool |
| 12/14/1993 | US5269941 Process and apparatus for the treatment of effluents containing emulsion inks |
| 12/09/1993 | WO1993024413A1 Apparatus for removal of solid, chemical and bacterial waste from water |
| 12/09/1993 | WO1993024203A1 Ecological water-treatment device |
| 12/09/1993 | CA2136421A1 Ecological water-treatment device |
| 12/08/1993 | EP0573226A1 Biocatalyst-immobilized electrode and method for treatment of water by use of the electrode |
| 12/08/1993 | EP0572757A1 Method to process sour humus containing water |
| 12/08/1993 | EP0572698A1 Method for treating aqueous streams containing undesired amounts of cyanide |
| 12/07/1993 | US5268093 Filler; porous body of microbiocide material |
| 12/04/1993 | CA2070364A1 Method for treating aqueous streams containing undesired amounts of cyanide |
| 12/02/1993 | DE4317343A1 Filter appts. for purifying and sterilising water |
| 12/02/1993 | DE4217987A1 Removal and recovery of heavy metals from earth, sludges and waterways - by amalgamation and sedimentation of esp. mercury@, nickel@ and cobalt@ and their cpds., by addn. of powered zinc@ or aluminium@ |
| 12/01/1993 | EP0572035A2 Cleaning water production system |
| 12/01/1993 | EP0571744A1 Process and apparatus for the treatment of waste water, especially for aircraft |
| 11/30/1993 | US5266215 Filters with sleeves for water treatment with ultraviolet radiation |
| 11/30/1993 | US5266212 Precipitation of copper-organophosphonate compounds by addition of simple carboxylic acids(or salts) leaves soluble impurities in solution |
| 11/30/1993 | US5266210 Lime, formation of heavy metal hydroxides, sodium carbonate to form calcium carbonate, coagulation |
| 11/30/1993 | US5266208 Hydrocarbon contamination |
| 11/30/1993 | US5266203 Method for treating process streams containing cyanide and heavy metals |
| 11/30/1993 | CA2096871A1 Constructive arrangement for a water purifying and sterilizing apparatus |
| 11/25/1993 | WO1993023336A1 Water cleaning apparatus |
| 11/24/1993 | EP0570959A2 Device for purifying drinking water |
| 11/23/1993 | US5264192 Method for detoxifying cyanide-containing water |
| 11/23/1993 | US5264135 Precipitation with metal hydroxide and complexing metals with dimethyldithiocarbamate, diethylcarbamate and trithiocarbonate |
| 11/23/1993 | US5264120 Wastewater treatment mechanism |
| 11/18/1993 | EP0569596A1 Apparatus for generating electrolytic water |
| 11/18/1993 | DE4216096A1 Phosphate removal from domestic or agricultural run=off polluted water - by flocculation and froth which can be dome e.g. in installation floating on lake, etc. undergoing treatment |
| 11/17/1993 | CN2146482Y Integrated water purifier |
| 11/16/1993 | US5262063 Removal of arsenic to produce drinking water |
| 11/16/1993 | US5262062 Complexing with sodium humate and alkali solution produce a disposable sludge which is environmentally safe |
| 11/16/1993 | US5262047 Local reclamation system |
| 11/16/1993 | US5262024 Using microwaves ultrasonic energy, electromagnetic waves to remove radioactive materials adsorved to the soil |
| 11/16/1993 | CA1324449C Method for treating polluted material |
| 11/13/1993 | CA2089348A1 Method for arsenic removal from wastewater |
| 11/11/1993 | WO1993022466A1 Mercury contaminated mud treatment |
| 11/11/1993 | WO1993022249A1 Process and device for destroying free and complex cyanides, aox, mineral oil, complexing agents, csb, nitrite, chromate, and for separating metals from waste waters |
| 11/11/1993 | WO1993022243A1 Method for purifying process water or wastewater containing wood resin |
| 11/11/1993 | WO1993022241A1 System for treating polluted groundwater |
| 11/11/1993 | DE4214974A1 Zerstörung von freien und komplexen Cyaniden, AOX, Mineralöl, Komplexbildnern, CSB, Nitrit, Chromat und Abtrennung von Metallen in Abwässern Destruction of free and complex cyanides, AOX, mineral oil, complexing agents, COD, nitrite, chromate and separation of metals in waste water |
| 11/11/1993 | CA2135171A1 A process and a device for the decomposition of free and complex cyanides, aox, mineral oil, complexing agents, cod, nitrite, chromate, and separation of metals in waste waters |
| 11/10/1993 | EP0568903A1 Process for treatment of materials containing heavy metals |
| 11/10/1993 | EP0472705B1 Method and apparatus for treatment of liquid photographic processing wastes |
| 11/10/1993 | EP0432250B1 Process for reducing the cyanide content of a solution |
| 11/09/1993 | US5259972 Apparatus and method for purifying water |
| 11/09/1993 | US5259960 Regeneration and recycling of contaminated solutions from aluminum and tin washer processes |
| 11/08/1993 | CA2095788A1 Local reclamation system |
| 11/06/1993 | CA2095180A1 Method for purifying process water or wastewater containing wood resin |
| 11/03/1993 | EP0567951A1 Process for treating and recycling waste waters from car repair shops |
| 11/03/1993 | EP0567914A1 Process and apparatus for waste water purification |
| 11/03/1993 | EP0567866A1 Treating of waste water from printing plants |
| 11/03/1993 | EP0470093B1 Method of processing water, in particular bath water |
| 11/03/1993 | CN1078014A Ground contamination remediation process and apparatus |
| 11/02/1993 | CA1323944C Treatment of mercury contaminated lakes |
| 11/02/1993 | CA1323943C Process for the treatment of waste |
| 10/28/1993 | WO1993021112A1 Method of reducing the level of contaminant materials in produced subterranean reservoir fluids |
| 10/28/1993 | WO1993021045A1 Method for automatic washing of vehicles |