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)
11/1990
11/13/1990US4970000 Water treatment
11/13/1990US4969996 Water purification device with an intake funnel
11/13/1990US4969995 Removal of metal ions from aqueous solution
11/13/1990US4969991 Water purifying and dispensing system
11/13/1990US4969983 Apparatus and process for the removal of acidic and basic gases from fluid mixtures using bipolar membranes
11/13/1990US4969774 Water pollution control; agglomeration
11/13/1990US4969520 Separation, softening; precipitation, flowing through wear ion exchange resin, steam generation
11/13/1990US4969393 Appliance with water softening facility
11/13/1990CA1276359C Semi-permeable membrane of sulphonated polyarylether sulphones
11/13/1990CA1276325C Two-stage clarification process and device for liquids containing solids
11/13/1990CA1276324C Process for waste treatment
11/12/1990CA2016582A1 Prevention of biofouling of reverse osmosis membranes
11/10/1990WO1990013519A1 Method and composition for treating waste water
11/10/1990WO1990013518A1 Water purification process
11/10/1990CA2055480A1 Water purification process
11/10/1990CA2054721A1 Method and composition for treating waste water
11/10/1990CA2016310A1 Method of treating waste water
11/09/1990CA2016161A1 Removal of nitrate and/or organic pollutants from effluents
11/08/1990DE3914940A1 Reverse osmosis purifies part of water supply for drinking - while remaining flow is used for less demanding domestic needs
11/08/1990CA2016176A1 Portable water purification system
11/07/1990EP0396390A1 Method for processing organic waste and apparatus therefor
11/07/1990EP0396142A1 Process and apparatus for controlling biological processes for phosphor and nitrogen removal in activated sludge plants
11/07/1990EP0396107A2 Ion concentration setting apparatus for ionic water
11/07/1990EP0395953A1 Process for removing hypohalogenite or hypohalogenic acid from aqueous solutions
11/07/1990EP0328560B1 Mineral substance, process for its manufacture and use thereof
11/07/1990CN2065193U Domestic water cleaner
11/07/1990CN2065192U Free level air dissolver
11/07/1990CN2065191U Efficient high-purity distilled water machine
11/07/1990CN2065093U 自清洗净水器 Self-cleaning water filter
11/07/1990CN1046725A Pre-precipitator for extra-high turbid water
11/07/1990CN1046724A Electrolytic cell of removing fluorine-containing impurity in water
11/07/1990CN1046723A Technology and apparatus for high-efficient production of distilled water
11/06/1990US4968891 Device for exposing a fluid medium to radiant energy
11/06/1990US4968489 UV lamp enclosure sleeve
11/06/1990US4968439 Sterilizing device and method using polyurethane iodine sponge
11/06/1990US4968438 Gallic acid as an oxygen scavenger
11/06/1990US4968437 Fluid purification system
11/06/1990US4968436 Method for the treatment of sewage containing nitrites
11/06/1990US4968435 Flocculation of suspended solids such as sewage sludge
11/06/1990US4968434 Recovering rare earth compounds from phosphoric acid solutions
11/06/1990US4968433 Absorption with tr5initroarenol or trinitroarylsulfonic acid
11/06/1990US4968431 Process for treating cooling water
11/03/1990CA2015962A1 Method for processing organic waste and apparatus therefor
11/01/1990WO1990012759A1 Method of electrolytic treatment and unit therefor
11/01/1990WO1990012757A1 Oil absorption method and apparatus
11/01/1990WO1990012756A1 Process and device for treating brines and contaminated mineral salts or mixtures thereof
11/01/1990WO1990012505A1 Toxicological stabilization of chloramine t
10/1990
10/31/1990EP0395573A1 Device for the magnetic treatment of a fluid
10/31/1990EP0395567A1 Process for the treatment of waste water from food processing plants
10/31/1990EP0395468A1 Method for removing oil pollutants and product for this purpose
10/31/1990EP0394864A1 Process for removing anorganic sulphur compounds from aqueous liquids
10/31/1990EP0394858A1 Process and apparatus for the separation of nitrates from a water current in waste water treatment
10/31/1990EP0394777A2 Washing device for vehicles
10/31/1990EP0394607A1 Method and apparatus for the treatment of brines and polluted mineral salts and their mixtures
10/31/1990EP0394541A1 Process for removing copper from waste water
10/31/1990EP0394529A1 Chloroisocyanurate composition
10/31/1990DE3914146A1 Disposal of flushing water produced in mfr. of composite wood prods. - by absorbing waste water into wood particles forming raw material for mfg. process
10/31/1990DE3914063A1 Removing phosphate from waste water - by activated sludge treatment after pre-incubation of water with recycle sludge in presence of iron oxide precipitant
10/31/1990DE3913772A1 Particles for selective removal of metal complex anions from aq. soln. - has ion-pairing agent dispersed in aq. phase which is present in a gel or encapsulated
10/31/1990CN2064769U Floated by blowing device
10/31/1990CN1046514A Treatment method for printing and dyeing waste water
10/31/1990CN1046513A Adsorbing reduction precipitation method for quickly treating chromium-bearing waste water
10/30/1990US4966872 Bacteriostatic activated carbon filter
10/30/1990US4966775 Biocidal compositions and use thereof
10/30/1990US4966759 Fluid purification
10/30/1990US4966717 Disinfecting of swimming pool
10/30/1990US4966716 Adding amine perhalide as microbiocide
10/30/1990US4966715 Process for the removal of cyanide from wastewaters
10/30/1990US4966714 Flocculation, separation of latex or synthetic resins with mixture of calcium oxide, magnesium oxides and silica
10/30/1990US4966713 Process for the treatment of waste water from food processing plants
10/30/1990US4966712 Flotation collector and method for treatment of inorganic substance-containing water system by use thereof
10/30/1990US4966711 Monitoring concentration of water treatment agents
10/30/1990US4966706 Peracid treatment; free of pathogenic microorganisms
10/30/1990US4966693 Apparatus for processing coolant
10/30/1990US4966692 Filtration system having flow control means and tank adapter with selective venting
10/30/1990US4966690 Chlorine induction apparatus for treatment of wastewater
10/30/1990US4966666 Focusing electric discharge onto fluid confined between dielectric material and electrode
10/30/1990US4966665 Method for photochemical decomposition of volatile organic chlorine compound in vent gas
10/30/1990US4966655 Plastic covered solar still
10/30/1990CA1275636C Magnetic molecular agglomerate reducer and method
10/25/1990DE4001139A1 Organic cpds. isolation from aq. medium using cyclic oligomer - of urea, thiourea or deriv. di:aldehyde and formaldehyde, esp. for dyestuff sepn.
10/25/1990DE3913391A1 Toxikologische stabilisierung von chloramin t Toxicological stabilization of Chloramine-T
10/25/1990DE3913169A1 Floating particulate cover for liq. manure silos, etc. - comprising mixt. of perlite with mixt. of fly-ash, lime and cement and polymeric binder
10/25/1990DE3913044A1 Clarifying waste waters contg. inorganic sAlts, dyes etc. - by mixing with lime, allowing reaction time and adding waste water contg. organic material to cause flocculation
10/25/1990DE3912921A1 Biological water treatment process - has biological purificn. step, sedimentation step and controlled sludge recirculation step
10/25/1990DE3912820A1 Cleaning water - contaminated with halogenated hydrocarbon(s), esp. per-chloroethylene, by passing through sedimentation tank and activated carbon filter
10/24/1990EP0393948A1 Concentrated aqueous solution of glutaraldehyde and 1,2,- benzisothiazolin-3-one
10/24/1990EP0393916A1 Method for the production of amidase enzyme
10/24/1990EP0393403A1 Insulating joint and packing containing a catalyst
10/24/1990EP0393267A1 A bioactive material derived from pearls
10/24/1990EP0383927A4 Method and electrolyzer for softening water
10/24/1990EP0218487B1 Basic aluminium chlorosulfate, process for its preparation and its use as a coagulating agent
10/24/1990CN2064366U Double cathode sodium hypochlorite producer
10/24/1990CN2064361U Water clarifier for drinking water
10/24/1990CN1046382A Vacuum-hydraulic deoxygenating device for pipeline
10/24/1990CN1046318A Cleaning technique of waste water by electromagnetic field
10/24/1990CN1046317A Treating equipment of waste water of electro---hydraulic pulse industry
10/24/1990CN1046316A Process of recovery of cyanogen in final cooling water of coke gas
10/24/1990CN1046315A Preparation process of bentonite-complexed water cleaner (i-type)
10/24/1990CN1010095B Process of treating acidic water
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