| Patents for C02F 1 - Treatment of water, waste water, or sewage (145,124) |
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| 09/25/1991 | EP0389601A4 Multistage fractional freezing for superpurifying crystallizable substances |
| 09/25/1991 | CN2085370U Energy transducer for scale remover |
| 09/25/1991 | CN2085369U Dc electromagnetic type water magnetizer |
| 09/25/1991 | CN2085368U U type co- and counter-current ion-exchanger |
| 09/25/1991 | CN2085367U Recovering equipment for removing oily dirt from water surface |
| 09/25/1991 | CN2085182U Healthy magnetic cup |
| 09/25/1991 | CN1054757A High-effective composite coagulant and its manufacturing method |
| 09/24/1991 | US5051487 Hydrophobic cationic terpolymers from acrylamide, dimethylaminoethylacrylate methyl chloride or sulfate and vinyl acetate |
| 09/24/1991 | US5051192 Solutions of surfactants in a viscosity modifier, water and a hydrocarbon solvent |
| 09/24/1991 | US5051191 Method to detoxify sewage sludge |
| 09/24/1991 | US5051187 Process for recovering sulfuric acid |
| 09/24/1991 | US5051186 Extraction of solutions with an organic solvent followed by stripping |
| 09/24/1991 | US5051161 Apparatus producing continuously electrolyzed water |
| 09/24/1991 | US5051124 Polymeric quaternary ammonium compounds as bactericides and algicides |
| 09/24/1991 | US5050781 Device for dosing a liquid contained in a first chamber and for transferring small doses thereof into a fluid flowing in a second chamber |
| 09/24/1991 | CA1289511C System of ionized oxygen allotrope gas water purification and method and apparatus therefor |
| 09/24/1991 | CA1289331C Fluid media sterilization apparatus |
| 09/23/1991 | WO1991014657A1 Process and installation for purifying waste water |
| 09/23/1991 | CA2077685A1 Process and installation for purifying waste water |
| 09/23/1991 | CA2034149A1 Method and apparatus for chlorinating water with liquefied chlorine |
| 09/22/1991 | WO1991014655A1 Process for the treatment of an aqueous solution containing mainly nitric and hydrofluoric acids |
| 09/19/1991 | WO1991014267A1 Method and apparatus for nuclear fusion |
| 09/19/1991 | WO1991013833A1 Waste water treatment process using improved recycle of high density sludge |
| 09/19/1991 | WO1991013714A1 Process for manufacturing metallic or ceramic materials |
| 09/19/1991 | DE4107920A1 Killing hot water storage tank bacteria - by additional heat derived from inert electrode |
| 09/19/1991 | DE4033227A1 Metallic or ceramic article prodn. - by moulding or casting film-forming material contg. metals or ceramic raw materials |
| 09/19/1991 | DE4008572A1 Sea-water desalination - using multiple ion exchanger sequence in concrete tunnel supplied by tidal action |
| 09/19/1991 | DE4008458A1 Water treatment for tapping off purified water - where filtered precleaned water passes through reverse-osmosis and UV sterilising units to storage then is tapped off via UV steriliser |
| 09/19/1991 | DE4007805A1 Waste water cleaning appts. for removing (in)organic salts - by passing waste water through electrically conducting concentric pipes then passing DC between them |
| 09/18/1991 | EP0447350A2 Comprehensive water treatment process |
| 09/18/1991 | EP0447120A1 A liquid membrane catalytic scale dissolution method |
| 09/18/1991 | EP0446730A1 Monoclonal antibodies against complexed and non complexed complexing agent for the elimination of heavy metals from water solutions and for analysis |
| 09/18/1991 | EP0446365A1 Water discharging apparatus |
| 09/18/1991 | EP0446266A1 Anti-microbial agent |
| 09/18/1991 | CN2084933U Mixed water magntizing device |
| 09/18/1991 | CN2084932U Multi-effect solar seawater desalter with honeycomb light-gathering structure |
| 09/18/1991 | CN1013974B Treatment for paper making black liquor and comprehensive utilizing method |
| 09/18/1991 | CA2038106A1 Polymeric oil adsorbents |
| 09/17/1991 | WO1991013834A1 Method and apparatus for treatment of liquid photographic pr ocessing wastes |
| 09/17/1991 | US5049320 Gas dissolving system and method |
| 09/17/1991 | US5049272 Filter cartridge with vented cap |
| 09/17/1991 | US5049256 Solvent extraction with methyl ethyl ketone |
| 09/17/1991 | US5049252 Water cleaning system |
| 09/17/1991 | US5049248 Liquid separation process for suspensions by a pulsating electrical current |
| 09/17/1991 | US5049247 Method for detecting and locating an electrolyte |
| 09/17/1991 | US5049002 Using a melted lipid composition |
| 09/17/1991 | US5048404 High pulsed voltage systems for extending the shelf life of pumpable food products |
| 09/17/1991 | CA2057003A1 Method and apparatus for treatment of liquid photographic processing wastes |
| 09/17/1991 | CA2037568A1 Separator |
| 09/17/1991 | CA1289275C Method for anaerobic treatment of high strength liquors |
| 09/17/1991 | CA1289103C Demineralization of aqueous solution in cell including ionic exchange membranes using electrical potential |
| 09/17/1991 | CA1288952C Metal recovery process |
| 09/16/1991 | CA2038358A1 Comprehensive water treatment system |
| 09/16/1991 | CA2031631A1 Decyanation apparatus and process for purifying water from cyanide using the same |
| 09/12/1991 | DE4106568A1 Appts. for directly forming dissolved ozone in circulated liq. - holding spaced electrodes emitting spaced AC pulses |
| 09/12/1991 | DE4106291A1 Controlled removal of sewage sludge from tank edge - with automatic allowance for different initial levels |
| 09/12/1991 | DE4007695A1 Adsorbent and binder comprising comminuted rubber, esp. scrap tyres - for removing oil from water, sludge or soil |
| 09/12/1991 | DE4007439A1 Sterilising hot water tank contents by regulated overheating - with auxiliary heat exchanger submerged in tank |
| 09/12/1991 | DE4007297A1 Elektrolysezelle zur elektrolytischen behandlung von prozessfluessigkeit An electrolytic cell for the electrolytic treatment of prozessfluessigkeit |
| 09/12/1991 | DE4007227A1 Control of bio-slimes |
| 09/11/1991 | EP0445989A2 Liquid purifying attachment having pressurizing piston |
| 09/11/1991 | EP0445792A1 Process and device for simultaneous disinfection as well as removal of nitrates/nitrites and other absorbable matter from drinking water |
| 09/11/1991 | EP0445347A2 Process of extracting anions with quaternary amines |
| 09/11/1991 | EP0445247A1 Anti-flooding sewage grinder pump liquid level control system in separately mounted canister |
| 09/11/1991 | EP0445224A1 Method for degradation of halogenated hydrocarbons using a methane-oxidizing bacterium, which produces methane monooxygenase |
| 09/11/1991 | EP0445169A1 Liquid-gas mixing device |
| 09/11/1991 | EP0445165A1 Flow discharge valve. |
| 09/11/1991 | CN2084585U 磁化离心泵 Magnetization centrifugal |
| 09/11/1991 | CN2084474U Electronic water scale and watermark scrubbing instrument |
| 09/11/1991 | CN1054406A Efficient electronic scale remover |
| 09/11/1991 | CN1054405A Method for treating waste liquid from gourmet powder plant and products thereof |
| 09/11/1991 | CN1054347A Processes including germ-destroying process,germicidal products and their preparation method, fumigant and fumigation method as well as germicidal gas compositions, their preparation method and appara |
| 09/10/1991 | US5047255 Activating material composed mainly of animal bone, flocculating agent composed mainly of the material and processes for preparation thereof |
| 09/10/1991 | US5047224 Method for treating organic waste material and an oxidation catalyst/cocatalyst composition useful therefor |
| 09/10/1991 | US5047149 Apparatus for the clarification of liquids, such as notably water, fruit juices, grape must or similar |
| 09/10/1991 | US5047126 Method for recovering metal from waste stream |
| 09/10/1991 | CA1288727C Method and apparatus for separating water from particulate material or oil from oil sands |
| 09/10/1991 | CA1288723C Electronic decomposition of water into free radicals and free electrons withsemiconductor anode |
| 09/10/1991 | CA1288599C Process for the stripping of cesium ions from aqueous solutions |
| 09/09/1991 | WO1991014026A1 Electrolytic cell for electrolysis of process liquid |
| 09/09/1991 | CA2076854A1 Electrolytic cell for electrolysis of process liquid |
| 09/08/1991 | CA2037758A1 Process and device suitable for the simultaneous disinfection and removal from drinking water of nitrate/nitrite ions as well as other adsorbable substances |
| 09/07/1991 | WO1992011213A1 Processing waste solidification |
| 09/05/1991 | WO1991013300A1 Solid-liquid-vapor multiple phase transformation processes with coupled absorption-melting operations |
| 09/05/1991 | WO1991013036A1 Process for purification of waste water |
| 09/05/1991 | WO1991013034A1 Method and apparatus for recirculation of liquids |
| 09/05/1991 | WO1991013032A1 Treating contaminated effluents and groundwaters |
| 09/05/1991 | WO1991013031A1 Water treatment |
| 09/05/1991 | WO1991013029A1 Water cleaning system |
| 09/05/1991 | WO1991008981A3 Solutions for stabilizing hydrogen peroxide containing solutions |
| 09/05/1991 | DE4006751A1 Vollautomatische stromsteuerung fuer metallabreicherungszellen Fully automatic power control for metallabreicherungszellen |
| 09/05/1991 | DE4006435A1 Procedure for cleaning ground water and seepage water - bubbles of carbon di:oxide are used to carry impurities to the water surface, and emulsions and suspended solids removedact Dwg 1/3 |
| 09/05/1991 | CA2076981A1 Method and apparatus for recirculation of liquids |
| 09/04/1991 | WO1991014023A2 Fully automatic current control system for metal depletion cells |
| 09/04/1991 | EP0444939A1 Antimicrobial composition |
| 09/04/1991 | EP0444815A2 Method of electrodepositing removal of ionic material and tourmaline crystal with electrodeposited metal |
| 09/04/1991 | EP0444530A1 Process and device for water detoxification |
| 09/04/1991 | EP0444180A1 Gas-solid photocatalytic oxidation of environmental pollutants |
| 09/04/1991 | EP0246316B1 Treatment of emulsions |
| 09/04/1991 | CN2084049U High hardness water softening device |