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)
12/1991
12/04/1991EP0458981A1 Deoxidizer for boiler and method of removing dissolved oxygen from boiler water
12/04/1991EP0458952A1 Catalytic method for degrading aqueous effluent containing toxic hydrocarbon compounds by oxidation.
12/04/1991EP0458808A1 A device for the mechanical separation of insoluble solids from a liquid containing said solids.
12/04/1991EP0458797A1 A coffee and/or tea machine.
12/04/1991CN2090000U Splash tape
12/04/1991CN2089931U Heavy metal dust removing device for raising seedlings water
12/04/1991CN2089930U Magnetic water purifier
12/04/1991CN2089929U Low water drag, high-frequency water treatment device
12/04/1991CN1056670A Concrete magnetizer
12/04/1991CN1056669A Process and apparatus for desalting of sea and obtaining of energy and materials contained in sea
12/04/1991CN1056666A Basic aluminum chloride producing method
12/04/1991CN1014980B Treatment of mercury contaminated lakes
12/04/1991CN1014979B Making method used in oil field for flocculated-etching-retarding agent
12/04/1991CN1014978B Purification technology of pulluted water with quartz powder
12/04/1991CN1014977B Method for separating the hydrocarbon from waste water
12/03/1991US5069893 Polymeric basic aluminum silicate-sulphate
12/03/1991US5069886 Air pollution control
12/03/1991US5069885 Photodegradation of water pollutants such as chlorinated biphe nyls
12/03/1991US5069880 Water purification
12/03/1991US5069800 Reduction with electropositive metal
12/03/1991US5069796 System for removing volatile components from water derived from wells
12/03/1991US5069795 Process for separating hydrocarbons from waste water
12/03/1991US5069785 Fluid purifying apparatus and method of purifying fluids
12/03/1991US5069784 Coagulation reaction tank
12/03/1991US5069783 Liquid treatment apparatus
12/03/1991US5069782 Fluid purification systems
12/03/1991US5069780 Ultrafiltration device and process
12/03/1991US5069779 Water treatment system
12/03/1991CA1292815C Process for removal of fluoride and phosphorous type contaminants from acidic wastewater
12/02/1991CA2043466A1 Method for treatment of wastewater containing polyether polyols
12/01/1991CA2043396A1 Method for removal of metal atoms and explosives from aqueous solution using suspended plant cells
12/01/1991CA2043226A1 Beverage brewing system
12/01/1991CA2018051A1 Wastewater disinfection with a combination of biocides
11/1991
11/30/1991CA2042430A1 Water treatment blend in solid form
11/28/1991WO1991018026A2 Novel acrylamidoxim-acrylhydroxam acid copolymers, process for making them and their use
11/28/1991WO1991017958A1 Process for treating waste water
11/28/1991DE4116278A1 Removal of nitrate(s) from drinking water using ion exchange - regeneration pipe connects anion and cation exchange units and regeneration liq. is produced by reverse osmosis
11/28/1991DE4016559A1 Portable treatment device for liquids esp. water - comprises vessel with plastic insert having inlet and outlet pipes, valves and filters, and folding carrying handle
11/28/1991DE4016514A1 Destruction of organic substances - esp. aromatic and/or halogenated cpds. in liq. or gases by irradiation with UV
11/28/1991DE4016156A1 Verfahren zum aufbereiten von abwasser Method for preparing of wastewater
11/27/1991EP0458737A2 Process and installation for deoxidising water
11/27/1991EP0458241A2 Process and apparatus for separating ammonium from aqueous liquids
11/27/1991EP0457988A1 Removal of heavy metals from aqueous systems
11/27/1991EP0457771A1 Electrochemical cells
11/27/1991CN1056565A Method and device for cool thermal storage and/or water purification
11/27/1991CN1056400A Method for recovering solid matter by treating waste alcoholic fermentation liquor
11/27/1991CA2043263A1 Electrodes
11/27/1991CA2042751A1 Electrochemical ion exchange
11/26/1991US5068297 Hydrophobic cationic terpolymers from acrylamide, unsaturated quaternary salt and vinyl acetate
11/26/1991US5068279 A mixture of urea, glyoxal and acetylacetone as scavengers for formaldehyde
11/26/1991US5068040 Cleaning a substrate by exposing to ultraviolet radiation to produce a photochemical reaction to remove undesirable material
11/26/1991US5068038 Adsorption of halo-organic pollutants on iron(III) hydroxy complexes in flocculants and oxidation
11/26/1991US5068036 Activated sludge process with in situ recovery of powdered adsorbent
11/26/1991US5068031 Sludge treatment apparatus
11/26/1991US5068030 Water filtering sterilizing and heating apparatus
11/26/1991US5067446 Apparatus for degassing and heating water
11/26/1991CA2027250A1 Removal of heavy metals especially lead from aqueous systems containing competing ions utilizing wide-pored molecular sieves of the ets-10 type
11/21/1991EP0457439A1 Method for controlling zebra mussels using didecyl dimethyl ammonium halides
11/21/1991EP0457359A1 Method of extracting organic compounds from water
11/21/1991EP0457303A1 Apparatus for concentrating waste liquor from photographic process
11/21/1991EP0457261A1 Apparatus for purification, for example of contaminated groundwater
11/21/1991EP0457136A1 Apparatus and method for purifying a liquid contaminated with waste material
11/21/1991EP0457035A1 Method for inactivating biological activity of DNA
11/21/1991DE4105151A1 Supply of energetic flow of water into two neighbouring parts - consists of tilting device with two chambers to discharge water into compartments
11/21/1991DE4016192A1 Sterilising filtration of drinks, esp. beer - in membrane unit with pre-heating of beer gives long term stabilisation
11/21/1991DE4016116A1 Continuous waste water disinfection - using indicator to monitor disinfection dwell time
11/21/1991DE4015983A1 Pressure holding valve for desalination plant - has combined pulsation damping and pressure regulating choke element in simplified appts.
11/21/1991DE4015489A1 Freeing waste material from heavy metals and dioxin(s) - by treating aq. slurry with active gas mixt. and precipitating heavy metals
11/21/1991DE4013779C1 Biological purificn. of waste water - using multistage plant including root chamber basin and feed line fitted with irrigation tube and sedimentation basin
11/20/1991CN2089002U Reflow type sewage treatment
11/20/1991CN1056295A Process for preparing ferro-type aluminium iron polychloride purifier
11/20/1991CN1056294A Water-magnetizing device with alternative magnetic field
11/20/1991CN1014782B Rapid disinfection process for water and sewage by gaseous chlorine
11/19/1991US5066488 Semi-anhydrous, suspension process for preparing uniform, free-flowing, fine, white powders of substantially anhydrous complexes of PVP and H2 O2 containing about 18 to about 22% H2 O2
11/19/1991US5066468 Fountain for the release of active agents into water drawn from wells
11/19/1991US5066408 Means and method to treat swimming pool water
11/19/1991US5066405 Antistatic polyurethane foam impregnated with hydrophobic, amorphous silicate
11/19/1991US5066402 Method of changing operating modes in automatic water filtering apparatus using tubular membranes
11/19/1991US5066393 Slotted flow collector/distributor for water treatment tank with one-way valves
11/19/1991US5066375 Introducing and removing ion-exchange and other particulates from an assembled electrodeionization stack
11/19/1991US5066371 Cycling through liquid treatment containers; countercurrent flow
11/19/1991US5065791 Fluid purifying apparatus and method of purifying fluids
11/19/1991CA1292204C Method for enriching water with oxygen
11/14/1991WO1991017392A1 Methods and apparatuses for providing cool thermal storage and/or water purification
11/14/1991WO1991017287A1 Method and device for porous-electrode electrolysis
11/14/1991WO1991017238A1 Extended-release plaque preventing and dissolving compositions and their method of use
11/14/1991WO1991017229A1 Method for the base-catalyzed decomposition of halogenated and non-halogenated organic compounds in a contaminated medium
11/14/1991WO1991017124A1 New formulations for iron oxides dissolution
11/14/1991WO1991017121A1 Composition for treating water contaminated with metallic ions, process for producing the same and its use
11/14/1991WO1991017120A1 A water treatment device
11/14/1991WO1991017119A1 Improved method for solute transfer between solid and liquid phases
11/14/1991WO1991016962A1 Water treatment system for a fuel cell power plant
11/14/1991DE4015336A1 Device for purifying water by reverse osmosis - has control system to determine when filters need to be serviced and the reverse osmosis unit needs to be rinsed, thus improving reliability
11/13/1991EP0456071A1 Apparatus and process for waste water treatment
11/13/1991EP0455889A1 Process and system for reclaiming and concentrating selected or combined waste products of the farming,food and butchering industries
11/13/1991CN2088665U Kettle type magnetized water heater
11/13/1991CN2088548U 携带式饮水净化器 Portable water purifier
11/13/1991CN2088547U Electric magnetic incrustant remover
11/13/1991CN2088546U Electronic water quality stabilizer
11/13/1991CN2088545U Composite oxidation-reduction resin deoxidation device
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