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)
09/1990
09/05/1990EP0377603A4 Clarification process
09/05/1990EP0374251A4 Device for separating ferromagnetic materials from fluid media
09/05/1990EP0365635A4 Process for decolorizing aqueous sugar solutions via adsorbent resins, and desorption of color bodies from the adsorbent resins
09/05/1990CN2061561U Portable device for treatment of water with high-frequency electric field
09/05/1990CN1009457B Method for processing industrial waste liquors with coagulating deposition
09/05/1990CN1009436B Dispensation formuld and production process of iron-grain deoxidizer and application
09/04/1990US4954469 Granulated activated carbon for water treatment
09/04/1990US4954321 Method and apparatus for ozone generation
09/04/1990US4954265 Removal of nickel and copper
09/04/1990US4954263 Antiscale, bactericides, algicides, pollution control
09/04/1990US4954259 Process for the treatment and purification of water by the flocculation of suspended particles in a fluidized bed
09/04/1990US4954230 Removal of heavy metals and oxidizable contaminants electrolysis, adsorption
09/04/1990US4954151 Method and means for optimizing batch crystallization for purifying water
09/04/1990US4954147 Water conditioning apparatus and method
09/04/1990US4953694 Distilling apparatus
09/04/1990CA1273721A1 Water conditioner backflush device
09/04/1990CA1273718A1 Reactor piping and flow control system
09/03/1990WO1990009833A1 Method for separating oil and water emulsions
09/02/1990CA2011251A1 Organic sludge dehydrater
08/1990
08/31/1990CA2009114A1 Process and apparatus for recovering reusable water from waste drilling fluid
08/29/1990EP0384662A1 Antialgal compositions comprising diphenylethers and isothiazolones, methods of controlling algae, and coating compositions comprising the antialgal compositions
08/29/1990EP0384661A1 Antialgal compositions comprising diphenylethers
08/29/1990EP0384329A1 Process for upgrading liquid manure
08/29/1990EP0384242A1 Process and apparatus for the treatment of glass-containing cooling water
08/29/1990EP0384150A1 Portable water purifier
08/29/1990EP0383927A1 Method and electrolyzer for softening water
08/29/1990EP0383835A1 Surface-active polysiloxanes
08/29/1990EP0383805A1 A low pressure distillation apparatus.
08/29/1990EP0383765A1 Sewage treatment plant.
08/29/1990EP0218608B1 Low-foaming compositions
08/29/1990CN2061172U Iron and fluorine removing water purification unit for sealed cinder
08/29/1990CN2061171U 树脂分离器 Resin Separator
08/29/1990CN1044966A Recovery and reuse method of papermaking effuent
08/29/1990CN1009341B Resin and its making method for treatment waste water containing mercury
08/28/1990US4952398 Biocidal composition with copper algicide
08/28/1990US4952378 Method for neutralization treatment of sulfuric acid containing iron ions
08/28/1990US4952376 Treating polluted water and wastes
08/28/1990US4952316 Continuous aeration-batch clarification wastewater treatment
08/28/1990US4952315 Method, system and emulsifier substance for treatment of materials containing harmful substances
08/28/1990US4952290 Waste water treatment and recovery system
08/25/1990WO1990009843A1 Method and apparatus for ozone generation
08/25/1990CA2031201A1 Method and apparatus for ozone generation
08/24/1990WO1990009835A1 Flocculating apparatus
08/24/1990CA2010333A1 Antialgal compositions comprising diphenylethers and isothiazolones, methods of controlling algae, and coating compositions comprising the antialgal compositions
08/24/1990CA2010332A1 Antialgal compositions comprising dihenylethers
08/23/1990WO1990009414A1 Process for the absorption of organic pollutants
08/23/1990WO1990009352A1 A device for the mechanical separation of insoluble solids from a liquid containing said solids
08/23/1990WO1990009132A1 A coffee and/or tea machine
08/23/1990DE4004777A1 Production of heat by oxidising petroleum or other fossil material - used as nutrient medium for genetically manipulated organisms
08/23/1990DE3905164A1 Sterilising filter for drinking water and liquid foods
08/23/1990DE3904981A1 Process and apparatus for decreasing the pollutant content of drinking water
08/23/1990DE3904698A1 Method for processing animal raw materials
08/23/1990DE3903775A1 Process for treating heavy metals in waste waters
08/22/1990EP0383674A1 Process and installation for the biological treatment of waste water containing nitrogen, especially for nitrification and/or denitrification
08/22/1990EP0383643A1 Process for controlling free chlorine residues in water
08/22/1990EP0383641A1 Composition and process for absorbing harmful products
08/22/1990EP0383640A1 Process for absorbing harmful organic products
08/22/1990EP0383524A1 Fluid treatment
08/22/1990EP0383522A1 Separation technique for oil ontaminated sludge
08/22/1990EP0383156A1 Process for eliminating phosphates and organically bound phosphorus from waste and feed waters
08/22/1990EP0383109A1 Use of bark mulch for the reduction of the nitrate content in ground and drinking water or surface water
08/22/1990EP0382876A1 Process for separating salts contained in seawater
08/22/1990EP0382860A1 Swimming pool chemical dispenser
08/22/1990CN2060773U Health sheet for purifying potable water
08/22/1990CN1044770A Method and apparatus for mixing liquid and coagulant
08/22/1990CN1009269B Mineral water generator
08/21/1990US4950908 Flocculant control system
08/21/1990US4950425 Alkali chromate catalyst; hydrogen peroxide oxidant
08/21/1990US4950409 Treatment with lime and carbon dioxide and bicarbonate to form nonleachable forms
08/21/1990US4950394 Arrangement for driving out volatile impurities from ground water
08/21/1990CA1273149A1 Process for treating a liquid involving cation exchange and selective removal of nitrate ions from the liquid, and ion exchange resin mixtures suitable for use therein
08/21/1990CA1273148A1 Ion exchange resin mixtures and their use in cation exchange processes
08/21/1990CA1273131A1 Process for water treatment and purification through flocculation of suspended solids on a fluidised bed
08/21/1990CA1272965A1 Water treatment plastic products for rectangular clarifiers
08/18/1990WO1990009415A1 Composition and process for the absorption of pollutants
08/17/1990WO1990009222A1 Clarification process
08/17/1990CA2046901A1 Clarification process
08/16/1990WO1990009405A1 Ammonium compound, composition containing it and desinfection method
08/16/1990EP0382709A1 Process for working up acidic iron-containing solutions, in particular used pickling liquors
08/16/1990EP0382562A1 Polymeric quaternary ammonium trihalides useful as microbicides, sanitizers and disinfectants
08/16/1990EP0382389A2 Method of sealing the exposed top surface of a relatively static body of liquid
08/16/1990EP0382140A2 Method and apparatus for mixing liquid and coagulant
08/16/1990EP0381874A1 Method and apparatus for water decontamination
08/16/1990DE4003055A1 Purifying industrial waste liq. by selected surfactants - used in sequence and dependent on predominant particle charge, to form sediment of floccules
08/16/1990DE4000834A1 2 stage brewery wastes treatment - comprises hydrolysis and methano genesis
08/16/1990DE3917646C1 Agglomeration of natural or synthetic polymer powder - obtd. by agglomerating small sized fractions of powder in presence of soln. or dispersion of agglomerating aid
08/16/1990DE3904346A1 Device for disinfecting liquids and gases by means of ultraviolet radiation using the counter-current principle
08/16/1990DE3904151A1 Centrifuge
08/16/1990DE3904025A1 Exhaust gas scrubber waste disposal by vacuum concentration of the sludges and concentrated salt solutions arising there
08/16/1990DE3903648A1 Method and system for inactivating viruses present in liquids
08/16/1990DE3901566C1 Appliance and method for electrocoagulation of coating particles dispersed in water
08/16/1990CA2027548A1 Ammonium compound, composition containing same and disinfection process
08/16/1990CA2007454A1 Process for controlling the free residual chlorine content in water
08/15/1990WO1990009353A1 Fluid treatment
08/15/1990CN2060441U Drink water purifying mineralizing apparatus
08/15/1990CN2060440U Domestic purifier for drink water
08/15/1990CN1044637A Production method of polymeric compounded flocculant
08/15/1990CN1044636A Method and apparatus for water decontamination
08/15/1990CN1009190B Method of production of purifying agent for polluted water
08/15/1990CN1009160B Waste treatment method and device
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