Patents
Sitemap › C02 - Treatment of water, waste water, sewage, or sludge › C02F - Treatment of water, waste water, sewage, or sludge › C02F 9 - Multistep treatment of water, waste water or sewage
Patents for C02F 9 - Multistep treatment of water, waste water or sewage (41,429)
01/1997
01/15/1997EP0753196A1 Method and device for disposing of a solution containing an organic acid
01/14/1997US5593554 Electrolytic ionized water producing apparatus
01/14/1997US5593542 Useful for papermaking
01/08/1997CN2244558Y Combined multi-functional water purifier
01/08/1997CN1139585A Liquid separator and fine filter
12/1996
12/31/1996US5589075 Use of silicon containing polyelectrolytes in wastewater treatment
12/31/1996US5589073 During removal of coatings from pipelines, equipment or other structures
12/31/1996US5589066 Portable water purification system
12/29/1996CA2152890A1 Method for treatment and decolorization of waste water from cosmetic manufacturing processes
12/27/1996WO1996041682A1 Process and device for the treatment of waste water from the wet dedusting of shredders
12/27/1996EP0749403A1 Process for purifying and reusing surfactant-containing waste waters
12/27/1996EP0654015B1 Process and device for the biological treatment of organically polluted waste water and organic waste
12/25/1996CN2243463Y Multifunctional assembling water tank
12/25/1996CN2243462Y Multifunctional water processor of household water heater
12/24/1996US5587079 Using bacteria
12/24/1996US5587067 Wastewater treatment apparatus
12/24/1996US5587060 Method of removing metal contained in solution
12/24/1996US5587055 Home water purification systems
12/18/1996CN1138011A Improved process for removing phosphate
12/17/1996CA2022232C Mobile self-contained system for on-site recovery of solvents
12/15/1996CA2179135A1 Treatment system
12/12/1996DE19520399A1 Verfahren und Einrichtung zur Aufbereitung von Abwässern aus Naßentstaubungen von Shredderanlagen Method and apparatus for treatment of waste water from Naßentstaubungen of shredders
12/10/1996US5582741 Adding oxidizer to disinfect water, removing solids, adding more oxidizer, irradiating with ultraviolet rays to decompose organic compounds, aerating so volatile materials can be entrained and adsorbed, removing residual oxidizer
12/10/1996US5582717 Water dispenser with side by side filling-stations
12/05/1996DE19622217A1 Car wash appts. that recycles, treats and stores used water
12/05/1996DE19520441A1 Hydrometallurgical processing and utilisation of residues and wastes contg. heavy metals
12/04/1996EP0745561A1 Method of decomposing volatile organic halogenated compounds in water
12/04/1996CN2241690Y Aseptic purified drinking bowl
12/03/1996US5580458 Defluorination by flocculation
12/03/1996CA2083091C Treatment of used sulfuric acid
11/1996
11/28/1996WO1996037440A1 Waste water purification system
11/28/1996CA2220906A1 Waste water purification system
11/27/1996CN1033381C Removal of cyanide from water
11/26/1996US5578213 Fluid treatment process
11/26/1996US5578200 Sewage treatment system
11/26/1996US5578193 Semicoductors, electrolysis
11/20/1996EP0553149B1 Apparatus and method for hydrolysis of cyanide-containing liquids
11/19/1996US5575908 Sewer system water purifier
11/14/1996WO1996035731A1 Dadmac/vinyl trialkoxysilane copolymers and their use in wastewater treatment
11/14/1996WO1996035642A1 Improved destruction of electron affinic contaminants during water treatment using free radical processes
11/14/1996WO1996035641A1 Waste water treatment process for producing high yields of drinking water
11/14/1996DE19517473A1 Verfahren zur Abwasseraufbereitung unter Gewinnung von Trinkwasser in hohen Produktausbeuten Process for wastewater treatment under production of drinking water in high product yields
11/14/1996CA2220127A1 Improved destruction of electron affinic contaminants during water treatment using free radical processes
11/14/1996CA2194295A1 Dadmac/vinyl trialkoxysilane copolymers and their use in wastewater treatment
11/13/1996EP0742311A1 Method and apparatus for recovering fiber from effluent streams
11/13/1996EP0741672A1 Method for purifying an organic waste-containing medium
11/13/1996EP0741671A1 Biodegradation of methanesulfonic acid
11/13/1996CN1033269C Method for treatment of glue wastewater by using chemical mixing-condensation precipitation method
11/12/1996US5573677 Washing machine rinse water recovery apparatus and method
11/12/1996US5573676 Aox = absorbable organic substances; cod = chemical oxygen demand; use of hydrogen peroxide, uv radiation, reducing agent and precipitation
11/12/1996CA2049681C Removal of cyanide from aqueous streams
11/09/1996CA2175434A1 Method and apparatus for recovering fiber from effluent streams
11/07/1996WO1996034684A1 Elimination of waste materials in paper production
11/07/1996DE19517320A1 Selectively removing mercury@ from power station or incineration gases washing water
11/07/1996CA2193839A1 Elimination of waste materials in paper production
11/06/1996EP0741113A1 Process for eliminating impurities in the circulation water of paper machines
11/06/1996CN2239425Y Household water purifier
11/06/1996CN1135204A Method for purifying process water from pulp manufacture
11/05/1996US5571419 Water treatment with hydrofluoric acid for total organic content and ion exchanging
10/1996
10/30/1996EP0739858A2 Liquid separator and polishing filter thereof
10/30/1996EP0739312A1 Bottle water disinfection system
10/29/1996US5570469 Method for removing metal contaminants from flue dust
10/29/1996US5569386 Reacting metal cyanide with formaldehyde or source of fomaldehyde and water forming glyconitrile, perhydrolysis of glyconitrile using hydrogen peroxide
10/29/1996US5569376 Flow augmenting devices for a wastewater treatment plant
10/28/1996CA2175265A1 Liquid separator and polishing filter therefor
10/24/1996WO1996033138A1 Aqueous purification processes
10/23/1996EP0738238A1 Process for the wet-oxidising treatment of organic pollutants in waste water
10/23/1996CN2238250Y Multifunctional high and strong water treatment device
10/23/1996CN2238249Y Health-care water producing device
10/16/1996CN2237639Y Small water-supply and-purifying technique and equipment using micro-eddy and low-impulse
10/15/1996US5565107 Introducing contaminated water to a packed bed of activated carbon to which an electrochemical potential is applied and to which ozone or hydrogen is fed simultaneously
10/10/1996DE19512908A1 Monitoring industrial waste outflow for heavy metal content
10/09/1996EP0736495A2 Method and system for treating a contaminated slurry
10/09/1996CN1032966C Process for sewage disposal from wool dyeing and printing by electrlyzation-catalytic oxidation
10/08/1996US5562832 Separating primary and secondary sludge, mechanically dewatering primary sludge by pressing, drying, mixing flocculent to secondary sludge, precipitating, and decanting
10/03/1996WO1996030310A1 On premise water treatment apparatus
10/03/1996WO1996030309A1 On premise water treatment method
10/03/1996WO1996030121A1 Removal of lead from drinking water
10/03/1996CA2216258A1 Removal of lead from drinking water
10/02/1996CN1132185A Method for prepn. of magnetized hyperoxygen water
10/02/1996CN1132184A Leather waste water treatment technique
10/01/1996US5560832 Demulsification of oily waste waters using silicon containing polymers
10/01/1996US5560821 Waste water treatment system
10/01/1996US5560393 Self-contained, purified drinking water refrigerator storage apparatus
09/1996
09/26/1996DE19510161A1 Assembly for treating malting water effluent
09/25/1996CN2235970Y Device for purification and disinfecting treatment of drink water
09/25/1996CN1131936A Bottle water disinfection system
09/25/1996CN1131643A Closed-circuit recovery and usage technology for waste water treatment of corrugated paper production
09/24/1996US5558775 Process for the treatment of hazardous waste water
09/24/1996US5558763 Sewage treatment system with air jetting means
09/17/1996US5556545 Purification by adsorption of arsenic from liquids using alumina adsorbent
09/11/1996EP0730560A1 Process for the treatment of waste water containing organic and inorganic compounds
09/11/1996EP0643674B1 Process for purifying streams
09/11/1996CN1130689A Method and apparatus for cleaning electronic parts
09/11/1996CN1130540A Water purifier
09/10/1996US5554299 Treatment/removal of byproduct aqueous effluents comprising hydroxynitroaromatic compounds
09/10/1996US5554295 Ion exchange, ultraviolet radiation
09/04/1996EP0729439A1 Method for purifying process water from pulp manufacture
09/04/1996CN1130157A Economic technology for treating pulping "black liquor" of medium and small paper mill
09/03/1996US5552062 Purification of water by aeration, neutralization, oxidation with air or oxygen and agitation
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