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)
10/1999
10/26/1999US5972293 Aqueous compositions for making ultrapure water used in microelectronic device fabrication processes and methods of sterilizing ultrapure water delivery systems using the same
10/26/1999US5972238 Method of preparing aqueous chlorine dioxide solutions
10/26/1999US5972227 Mixing sludge with aqueous solution containing a dithiocarbamate compound solute to spontaneously release methyl isothiocyanate gas
10/26/1999US5972226 Process and installation for the treatment of effluents by oxidation and denitrification in the presence of a heterogeneous catalyst
10/26/1999US5972216 For water purification needs of military forces during troop deployment, training and maneuver, disaster relief and pollution control
10/26/1999US5972196 Electrochemical production of ozone and hydrogen peroxide
10/26/1999US5972191 Electrodialysis apparatus
10/26/1999US5972073 Adding alkaline earth salt to high ph waste water to form group alkaline earth-group v oxyanion salt precipitate and water soluble group iii hydroxide, filtering precipitate, then lowering ph to precipitate out group iii hydroxide
10/26/1999US5971371 Water/air treatment system
10/26/1999US5971368 System to increase the quantity of dissolved gas in a liquid and to maintain the increased quantity of dissolved gas in the liquid until utilized
10/26/1999CA2181313C Electronic driver for water treatment system uv bulb
10/21/1999WO1999053304A1 Method for electroelution of a biological sample and implementing device
10/21/1999WO1999053108A1 Method for treating steel works dust by wet process
10/21/1999WO1999052829A1 A method and a device for the treatment of water
10/21/1999WO1999052828A1 Apparatus for magnetically treating flowing liquids
10/21/1999WO1999052827A1 Device and method for desalinating salt water and method of producing carbon dioxide exhausting means
10/21/1999WO1999052618A2 Filter for removing solids from liquids
10/21/1999WO1999052567A1 Catalytic chamber
10/21/1999WO1999052566A1 Water disinfection system using ultraviolet light
10/21/1999WO1999052404A1 Airplane passenger and lap child restraint system with floatation pad
10/21/1999WO1999052364A1 Sunlight-ultraviolet-stable biocide compositions and uses thereof in water treatment
10/21/1999WO1999038803A9 Novel water treatment device and method
10/21/1999DE19916896A1 Particles for chelating metal ions, useful in cosmetic, pharmaceutical and food products and products for treating liquids, especially water
10/21/1999DE19817268A1 Waste water treatment comprising catalytic and biological processes
10/21/1999DE19816871A1 Disposable filter cartridge for medical and domestic use
10/21/1999CA2328873A1 Filter for removing solids from liquids
10/21/1999CA2328855A1 Sunlight-ultraviolet-stable biocide compositions and uses thereof in water treatment
10/21/1999CA2328298A1 Method for electroelution of a biological sample and implementing device
10/21/1999CA2326895A1 Catalytic chamber
10/20/1999EP0950639A1 An apparatus and method for purifying water
10/20/1999EP0950026A1 Water treatment apparatus for scale prevention
10/20/1999EP0950025A1 Water treatment and purification
10/20/1999EP0950024A1 Purifying water by superheated steam
10/20/1999EP0949970A2 Apparatus for photocatalytic fluid purification
10/20/1999EP0949951A1 Method and apparatus for treatment of liquid
10/20/1999EP0863793B1 Method for cleaning an immersed-membrane filtration apparatus
10/20/1999EP0836537B1 Process for cleaning factory equipment with integrated prerinse
10/20/1999EP0830384B1 Process for producing dispersions of water-soluble vinyl polymers and stabiliser for implementing the process
10/20/1999CN2344399Y Multi-stage water-purifying device
10/20/1999CN2344398Y Multifunctional water-purifying device
10/20/1999CN2344394Y Oxygen-enriched pure water storage tank of small pure water machine
10/20/1999CN2344393Y Catalytic hydrogenation deaerator
10/20/1999CN2344392Y Eddy sewage treatment equipment
10/20/1999CN2344391Y Electricity-saving distilled water machine
10/20/1999CN2344390Y Negative pressure evaporation type desalination plant
10/20/1999CN2344389Y Wall hanging full-automatic water cleaning and storing device
10/20/1999CN1232474A Cationic water-soluble polymer precipitation in salt solutions
10/20/1999CN1231997A Breaking down aromatic nitro compounds in wastewaters
10/20/1999CN1231994A Domestic ozone water and oxygen-enriched water producer
10/20/1999CN1231993A Process and special apparatus for treatment of industrial waste water
10/20/1999CN1231992A Water magnetizing device having rare-earth silicon iron core
10/20/1999CN1231991A Method for treatment of oil-bearing waste water
10/20/1999CN1231938A Process for preparing active drinking water
10/20/1999CN1045725C Method and apparatus for treatment of circulating cooling water in air conditioning system
10/20/1999CA2268604A1 Water filter cartridge
10/19/1999US5968814 Portable system and method for controlling and absorbing spills of petroleum products
10/19/1999US5968669 Fire retardant intumescent coating for lignocellulosic materials
10/19/1999US5968369 Method and apparatus for waste water treatment
10/19/1999US5968364 Process for the removal of toxic cyanide and heavy metal species from alkaline solutions
10/19/1999US5968352 Gas contact tank
10/19/1999US5968351 Apparatus for receiving metalworking fluid
10/19/1999US5968338 Process for recovering onium hydroxides from solutions containing onium compounds
10/19/1999US5968337 Apparatus and method for constant flow oxidizing of organic materials
10/19/1999US5968321 Vapor compression distillation system and method
10/19/1999US5967335 Screening device for screening a suspension
10/19/1999CA2212763C Electrolytic hydrogen dissolved water, and method and apparatus for production thereof
10/19/1999CA2169675C Water soluble polymers containing allyloxybenzenesulfonic acid monomer and methallyl sulfonic acid monomer
10/14/1999WO1999051867A1 Improvements in the generation of electricity and the treatment and disposal of sewage
10/14/1999WO1999051530A1 Flocculator apparatus
10/14/1999WO1999051529A1 Process for recovering onium hydroxides or onium salts from solutions containing onium compounds using electrochemical ion exchange
10/14/1999WO1999051528A1 Distillation device
10/14/1999WO1999051527A1 Flow-through beaker which can be filled with a granulate
10/14/1999WO1999044732B1 A composition for mixing oil and water to form a solution
10/14/1999WO1999037819A3 Amplification of nucleic acids with electronic detection
10/14/1999DE19828593A1 Adsorber used e.g. for removing mercury from natural gas or hydrogen
10/14/1999DE19815844A1 Waste liquor treatment to decompose aromatic nitro compounds with and without hydroxyl group on ring
10/14/1999DE19815669A1 Process for removing nitrates from industrial waste water
10/13/1999EP0949323A2 Process and apparatus for the conservation of cooling lubricants
10/13/1999EP0949205A1 Process for producing acidic water containing dissolved hydrogen peroxide and electrolytic cell therefor
10/13/1999EP0949204A1 Biophysical process and plant for treatment of waste water containing sugar or alcohol
10/13/1999EP0948995A1 Process for removing halogenated compounds from a gas or a liquid with at least one metallic element-containing composition
10/13/1999EP0948463A1 Apparatus for the biological purification of waste water
10/13/1999EP0948462A1 Organosilic system with disincrustant action in aqueous media
10/13/1999EP0948461A1 Apparatus for the electrochemical treatment of a liquid medium
10/13/1999EP0948399A1 Method and apparatus for dissociating materials
10/13/1999EP0948386A2 Water purifier with adjustable volume in dwell passage
10/13/1999EP0948381A2 Process and apparatus for improving the efficiency of an evaporation process
10/13/1999EP0741670B1 Unit for treating water by ozonation comprising an ozonised water production apparatus
10/13/1999CN2343611Y Auxiliary automatic controller for electric heating water distiller
10/13/1999CN2343427Y Purifying magnetizing water tap
10/13/1999CN2343187Y Magnetizing water drum washer
10/13/1999CN2343186Y Detergent liquid circulation magnetizer for drum washer
10/13/1999CN2343162Y Water quality purifier for pool
10/13/1999CN2343161Y Automatic device for preparing and adding lime milk
10/13/1999CN2343160Y Fluid magnetizing processor
10/13/1999CN2343159Y Composite ultrafiltering water purifier
10/13/1999CN2343158Y Remote-controlled device for cleaning dirt on surface of water
10/13/1999CN2343157Y Water sterilizer
10/13/1999CN2343156Y Water purifying filter
10/13/1999CN2343155Y 净水器 Water Purifier
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