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)
10/1990
10/24/1990CA2015185A1 Method of eliminating oil pollutants and related material
10/24/1990CA2014954A1 Process and apparatus for the treatment of brines and contaminated mineral salts or mixtures thereof
10/23/1990US4965061 Process for removing fluoride from a wastewater and producing hydrofluoric acid therefrom
10/23/1990US4965016 Granular calcuim hypochlorite composition and process for preparation thereof
10/23/1990US4964995 Supercritical separation process for complex organic mixtures
10/23/1990US4964970 Compact low volume water purification apparatus
10/23/1990US4964885 Reducing dew point; washing, condensating exhaust gases; continuous cycles
10/23/1990CA1275511C Process for treating ammonium nitrate-containing waste water
10/23/1990CA1275510C Integrated biological-adsorption process for treating wastewater
10/21/1990WO1990012633A1 Method of separating oil-in-water emulsions
10/21/1990CA2053227A1 Process for the separation of oil-in-water emulsions
10/20/1990WO1990012758A1 A process and device for desalinating sea water and for obtaining power and the raw materials contained in sea water
10/20/1990CA2053263A1 Process and device for the desalination of sea water and for obtaining energy and the raw materials contained in sea water
10/20/1990CA2012435A1 Halogen generation
10/18/1990WO1990011970A1 Process for removal of organic pollutants from waste water
10/18/1990WO1990011826A1 Uranium adsorbent
10/18/1990WO1990011821A1 Process for the preparation of chlorine-resistant polyester semipermeable membranes
10/18/1990WO1990011811A1 Device for removing highly volatile impurities from the ground water
10/18/1990DE3912517A1 Combining suspension feed with cavitation breakdown of agglomerates - using conduit whose radial rotor blades have flat and curved edges
10/18/1990DE3912498A1 Combined gravitational and magnetic fields - increase beneficial effect of water flowing in conical helical pipe round magnetic core
10/18/1990DE3911789A1 Verfahren zur biologischen abwasserbehandlung mit hilfe von mikroorganismen A process for biological wastewater treatment using microorganisms
10/18/1990DE3904452A1 Mobile arrangement for treating waters, such as well water or surface water, waste water or liquid manure, ...
10/17/1990EP0392896A1 Composition and process to reduce the corrosiveness of oxygenised salty solutions by bubbling with acid gases
10/17/1990EP0392873A2 Deactivation of phosphonium biocides
10/17/1990EP0392726A2 Filter device
10/17/1990EP0392562A2 Magnetic device for scale prevention
10/17/1990EP0392097A1 Apparatus for water treatment
10/17/1990EP0391924A1 Hypobromination of water.
10/17/1990CN2063937U Scale-proof device for magnetic water
10/17/1990CN2063841U Removing device for floating oil
10/17/1990CN1046083A Improver of water quality and application thereof
10/16/1990US4963750 Fluid media sterilization apparatus
10/16/1990US4963586 2,2-dibromo-3-nitrilopropionamide and nitrobromopropane derivative; synergistic
10/16/1990US4963269 Increasing absorption efficiency by limiting injected ozone gas and water into main pipe line to prevent cavitation
10/16/1990US4963268 Method and system for variable frequency electromagnetic water treatment
10/16/1990US4963257 Buoyant coarse media flocculator
10/16/1990US4963179 Microbiocides
10/16/1990US4962776 Removing the frozen film and entrapped microparticles, purification
10/16/1990CA1275243C Digester tank with foam control cover
10/15/1990WO1990012923A1 Oil arrester
10/15/1990CA2031200A1 Oil arrester
10/14/1990CA2014578A1 Deactivation of phosphonium biocides
10/12/1990WO1990011971A1 Process for the biological treatment of waste water using microorganisms
10/12/1990CA2050885A1 Process for the biological treatment of waste water using microorganisms
10/11/1990DE4010943A1 Anodic protection for systems carrying neutral or weakly acid water - positively polarises systems with anodic current density of 0.5 to 1.0 micro amps per square metre
10/11/1990DE3911024A1 Process and plant for reducing the liquid manure volume arising in animal husbandry
10/11/1990DE3910957A1 Low-pressure gas-discharge radiator
10/11/1990CA2014234A1 Process for the preparation of chlorine-resistant polyester semipermeable membranes
10/10/1990EP0391839A1 Start-up method for a process for deoxidizing water, particularly sea water
10/10/1990EP0391519A1 P-Xylylenediamide/diimide composite ro membranes
10/10/1990EP0391508A2 Utility water plant disinfecting process.
10/10/1990EP0391318A1 Ion water for production of foods and beverages
10/10/1990EP0391035A2 Dense fluid photochemical process for substrate treatment
10/10/1990EP0390879A1 Photodegradation of metal chelate complexes
10/10/1990CN2063517U High gradient magnetic separation water purifying device
10/10/1990CN2063516U Thermomagnetic disc
10/10/1990CN2063515U Full-plastic solar and electric energy dual-purpose fresh water producer
10/10/1990CN2063514U Multifunction store device for distillation
10/10/1990CN1045960A Treatment method for phenolic wastewater
10/10/1990CN1045959A Method for purifying kelp immersion water
10/10/1990CA2014030A1 Process for removal of organic pollutants from waste water
10/10/1990CA2011083A1 Process and compound for reducing corrosiveness of saline solutions oxygenated by means of acid gaz sweeping
10/09/1990US4962123 Industrial fungicides, bactericides
10/09/1990US4961872 Calcium hypochlorite tablets
10/09/1990US4961860 Method of water treatment
10/09/1990US4961859 Method of treating an aqueous processing waste solution of a non-silver halide light-sensitive material and a device therefor
10/09/1990US4961519 Lime feeder
10/09/1990CA1275069A1 Separation of dispersed phase from continuous phase
10/05/1990CA2013303A1 Method and apparatus for deoxidation of sea-water
10/04/1990WO1990011348A1 PROCESS FOR STABILISING THE pH OF AQUEOUS FEED SOLUTIONS AND FOR ABSORBING AND BUFFERING URINE AND WOUND SECRETIONS
10/04/1990WO1990011254A1 Device for purifying waste water
10/04/1990WO1990011253A1 Use of non-hydrolysed copolymers containing n-vinyl formamide units as flocculation and dehydrating agents
10/04/1990WO1990011252A1 Process for the decomposition of waste absorption solutions
10/04/1990DE3920544C1 Flue gas purificn. system downstream of refuse incinerator - has acid treatment stage receiving sodium hydroxide to form pure sodium chloride which recycled to mixer stage
10/04/1990DE3910366A1 Apparatus for microbial reduction in swimming pools by means of ultraviolet rays incorporating a part-stream with an added disinfectant, such as chlorine
10/04/1990DE3910130A1 Process for preparing a concentrated solution of sodium sulphite and sulphate originating, in particular, from flue gas desulphurisation
10/03/1990EP0390353A1 Water-soluble glass water-treating agent
10/03/1990EP0390265A1 Process for purifying waste waters constituted by civil, industrial, agroalimentary, and zootechnical waste waters, and facility for practicing it
10/03/1990EP0389661A1 Process for removing arsenic from waste waters
10/03/1990EP0389601A1 Multistage fractional freezing for superpurifying crystallizable substances.
10/03/1990EP0389596A1 Apparatus and method of treating black liquor
10/03/1990CN2063122U Household comprehensive treatment device for drinking water
10/03/1990CN2063121U Cyanogen removing purifier
10/03/1990CN2063120U Magnetizing protector for water heater
10/03/1990CN1045757A Method for treating muddy water
10/03/1990CN1009822B Process and apparatus for removing sulphates from waste water
10/03/1990CN1009821B Hydrogen-sodium ion combining water treatment technique
10/03/1990CA2009748A1 Dense fluid photochemical process for substrate treatment
10/02/1990US4960590 Microbiocides, antiseptics, bactericides, fungicides
10/02/1990US4960511 Apparatus for depleted chemical milling solutions
10/02/1990US4960500 Waste metal extraction apparatus
10/02/1990CA1274927A1 Flocculants for bauxite (red mud)
10/02/1990CA1274925A1 Removing selenium from water
09/1990
09/30/1990CA2013312A1 Apparatus for the magnetic treatment of a fluid
09/29/1990CA2010726A1 Method of stabilizing the ph in aqueous nutrient solutions for terrestrial plants, aquatic animals and cell cultures as well as for the absorption and buffering of urine and woundsecretions
09/27/1990DE3909468A1 Process for precipitating out heavy metals
09/27/1990DE3909062A1 Verfahren zur zersetzung von abfallaugen aus absorptionsprozessen Absorption processes method for decomposition of waste eyes from
09/27/1990DE3908746A1 Method of elasticating oil
09/26/1990EP0389405A2 Method and apparatus for treating a liquid mixture
09/26/1990EP0389275A1 Skimming apparatus
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