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)
10/1991
10/22/1991US5059317 Transportable apparatus for producing drinking water
10/22/1991US5059316 Water treatment device
10/22/1991US5059296 Portable self-contained solar powered water purifier
10/22/1991US5059287 Home use
10/22/1991US5059228 Cool thermal storage and/or water purification by direct contact in-situ crystal formation and crystal melting operations
10/22/1991CA1291001C Composition and method for flocculating and removing solids suspended inwater
10/19/1991CA2037839A1 Process of purifying exhaust gas
10/17/1991DE4105607A1 Drawing liq. samples from waste-water treatment plant - dividing outflow into separate sample collectors associated with compartments of tub tilted about axis
10/17/1991CA2034058A1 Decreasing the concentration of hydroxyl ions in aqueous alkaline peroxide solutions
10/16/1991EP0451434A1 Method for controlling deposits and corrosion in water treatment applications
10/16/1991EP0451430A1 Plant to depollute waste water, particularly water from olive crushers
10/16/1991EP0223860B1 Germicidal and purifying agent for drinking water
10/15/1991US5058032 Apparatus and method for monitoring a water treatment system
10/15/1991US5057612 N,n'-dihaloimidazolidin-4-ones
10/15/1991US5057292 Hydrogen sulfide abating cooling toner
10/15/1991US5057231 Heat exchanging; superheated steam
10/15/1991US5057230 Supplying pressurized liquid streams to venturi to cause turbulence, injecting gas bubbles, shearing to reduce size
10/15/1991US5057229 Apparatus and process for the treatment of cooling circuit water
10/15/1991US5057227 Usin permeable barrier containing peat
10/15/1991US5057220 Process for treating waste water
10/15/1991US5057212 Water conductivity monitor and circuit with extended operating life
10/15/1991US5057202 Electrolytic recovery unit
10/15/1991US5057198 Electrolysis, precipitation of metal salts, filtration
10/15/1991US5057191 Disposal by controlled evaporation
10/14/1991WO1991016131A1 Oxidation chamber
10/14/1991CA2080338A1 Oxidation chamber
10/12/1991WO1991015628A1 Method for treating mechanical pulp plant effluent
10/12/1991CA2059297A1 Method for treating mechanical pulp plant effluent
10/11/1991WO1991015286A1 Process of making potable water
10/11/1991CA2058983A1 Process of making potable water
10/10/1991WO1991015431A1 Method of purifying lacustrine water and filthy water purification boat
10/10/1991WO1991015195A1 Chemical tablet with central hole and partially exposed top and bottom
10/10/1991DE4031512C1 Water quality improvement for fish transport container - by feeding to low pressure vessel, removing carbon di:oxide, pumping into pressure vessel and adding oxygen
10/10/1991DE4019982A1 Treating heavy metal-contg. industrial waste - with sodium poly:thio:carbonate soln. to remove heavy metal content
10/10/1991CA2079874A1 Chemical tablet with central hole and partially exposed top and bottom
10/10/1991CA2017489A1 Water disinfecting system
10/09/1991EP0450989A1 Alkaline metals hydrated silicates, sperical granules, process for their preparation and their application in detergent compositions
10/09/1991EP0450444A1 Improving operation life of on-line boiling water reactors
10/09/1991EP0450440A1 Method of providing extended life expectancy for components of boiling water reactors
10/09/1991EP0450047A1 Polymer bead containing immobilized metal extractant
10/09/1991EP0449997A1 Oil absorption method and apparatus
10/09/1991EP0449996A1 Method of electrolytic treatment and unit therefor
10/09/1991EP0449944A1 Polysiloxane bound photosensitizer for producing singlet oxygen
10/09/1991EP0449942A1 Phosphonic acids and their uses in separation.
10/09/1991EP0317553B1 Process for treating pollutant effluent, particularly in the tanning industry, and plant for implementing the process
10/09/1991CN2086257U Magnetic water device with rotary magnetic field
10/09/1991CN2086256U High-frequency water treatment device
10/09/1991CN2086255U Tube socket type drinking water clarifier
10/09/1991CN2086254U Integrated drinking water clarifier
10/09/1991CN1055207A Method for treating of waste water containing cyanogen and heavy metal ions
10/09/1991CN1055161A Composite biological fluidized-bed reactor for treatment of starch wastewater
10/08/1991US5055402 Removal of metal ions with immobilized metal ion-binding microorganisms
10/08/1991US5055201 Process for removing dissolved contaminants from aqueous solutions using reversibly dispersible getters
10/08/1991US5055200 Adding anionic, then cationic polymer, stirring and deflocculation
10/08/1991US5055189 Magnetic permeable pipe, radiation transparent ceramic
10/08/1991US5055184 Gas assisted flotation apparatus
10/08/1991US5055183 Water treatment device
10/08/1991US5055178 Process for extraction of water mixed with a liquid fluid
10/08/1991US5055170 Ion concentration setting apparatus for ionic water generator
10/08/1991CA1290279C Method and device for destroying bacteria
10/08/1991CA1290257C Osmotic concentration by membrane
10/07/1991WO1991015432A1 Process and apparatus for pathogen reduction in waste
10/06/1991WO1991015281A1 Portable water purification system
10/06/1991CA2079809A1 Portable water purification system
10/06/1991CA2014112A1 Electrolytic apparatus for treating liquid media
10/03/1991WO1991014824A1 Membrane separation process
10/03/1991WO1991014804A1 Electrode arrangement for electrolytic purposes
10/03/1991WO1991014793A1 Process for removing inorganic gels and incompressible solids from acidic media
10/03/1991WO1991014656A1 Process for removing ammonium compound impurities from industrial, agricultural or private waste water
10/03/1991WO1991014603A1 Process and installation for supplying (washing) water and use of filter papers therefor
10/03/1991WO1991014487A1 Solar still assembly
10/03/1991WO1991012358A3 Electrode element for electrolytic purposes and its use
10/02/1991EP0449735A1 Electrolytic de-pollution reactor
10/02/1991EP0449184A1 Method for treatment of liquid manure
10/02/1991EP0448973A1 Spiral wound gas permeable membrane module and apparatus and method for using the same
10/02/1991EP0448924A1 Process for separating water from a diluted aqueous solution of N-methylmorpholine-N-oxide, N-methylmorpholine and/or morpholine
10/02/1991EP0448821A1 Process for breaking oil-in-water emulsions
10/02/1991DE4110687A1 Treatment of liq. contaminated with hazardous substances - by mixing with an oxidising agent in cylindrical tube and exposing to UV light
10/02/1991DE4009589A1 Removing heavy metals from aq. soln.s esp. waste water - by pptn. to microcrystals used as seed crystals for gypsum casing giving easily filtered ppte.
10/02/1991CN2085795U Ac circular field type water magnetizer
10/02/1991CN1014142B Method and apparatus for cleaning sewage contg. phosphate by uqv
10/01/1991US5053205 Floatable, self-powered chlorinator; random movement over water; water jet pump
10/01/1991US5053144 Method for the multistage, waste-free processing of red mud to recover basic materials of chemical industry
10/01/1991US5053143 Fluid purifying apparatus and method of purifying fluids
10/01/1991US5053142 Method for treating polluted material
10/01/1991US5053140 Injecting gases in wastewater at bottom of tower; forming an overflowing of fat and impurities; poultry; countercurrent flow; reuse
10/01/1991US5053139 Removal of heavy metals, especially lead, from aqueous systems containing competing ions utilizing amorphous tin and titanium silicates
10/01/1991US5053136 Method for the heterogeneous catalytic photodegradation of pollutants
10/01/1991US5053114 Chlorinator apparatus
10/01/1991US5053110 Solar water distillation system
10/01/1991US5052382 Apparatus for the controlled generation and administration of ozone
10/01/1991CA1289846C Control of corrosion in aqueous systems
09/1991
09/28/1991CA2038907A1 Process for the separation of oil-in-water emulsions
09/26/1991DE4116087A1 Disposal of waste water from thermal salt bath treatment of metals - by evapn. and melting brine, withdrawing vapour in heated air
09/26/1991DE4009249A1 Filter medium for purificn. of effluent waters etc.
09/26/1991DE4009082A1 Verfahren zur reinigung von industriellen, landwirtschaftlichen oder privaten abwaessern von ihren verunreinigungen an ammoniumverbindungen Method for cleaning of industrial, agricultural or private wastewater from their impurities on ammonium compounds
09/26/1991DE4008983A1 REverse osmosis membrane used to filter pesticide-contaminated water - using low operating pressure to ensure only moderate desalination and removal of hardness
09/25/1991EP0448282A1 Separator
09/25/1991EP0447923A1 Polymeric oil absorption composition
09/25/1991EP0434686A4 Removal of nitric oxide from waste gases and recovery as nitric acid
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