| Patents for C02F 1 - Treatment of water, waste water, or sewage (145,124) |
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| 07/18/1990 | CN1008813B Method and device of purification iodateing for drinking water |
| 07/18/1990 | CN1008812B Cyan-containing waste water treatment by iron blue method |
| 07/18/1990 | CN1008811B Equipment of removing iron and manganese from ground water |
| 07/18/1990 | CN1008810B Fluid purification system |
| 07/18/1990 | CA2020467A1 Process for the removal of mercury from an aqueous medium and an apparatus therefor |
| 07/17/1990 | US4941978 Block polymers of ethylene/butylene with styrene for absorption of oils |
| 07/17/1990 | US4941977 Cross-flow separator for separating component suspended in a liquid |
| 07/17/1990 | US4941973 Magnetic attracting means for removal of iron oxides |
| 07/17/1990 | US4941957 Decomposition of volatile ogranic halogenated compounds contained in gases and aqueous solutions |
| 07/17/1990 | US4941902 Freezing water, washing coils, circulation, accumulation in containers |
| 07/13/1990 | CA2007280A1 Sulfamic acid descaling composition for active carbon, and discaling method thereof |
| 07/12/1990 | WO1990007468A1 Recovery of heavy and precious metals from aqueous solutions |
| 07/12/1990 | WO1990007466A1 Ozone generation by corona discharge at elevated pressures |
| 07/12/1990 | DE3919350C1 Appts. for clarifying clear slurry - comprises heating and de-watering slurry, evaporating filtrate and adding concentrate to de-watering stage |
| 07/12/1990 | CA2007489A1 Low free formaldehyde melamine-formaldehyde detackifier and method of using |
| 07/11/1990 | WO1990008738A1 Process for preparing basic aluminum compounds |
| 07/11/1990 | EP0377411A2 Method and apparatus for fresh water demineralisation by electrolysis |
| 07/11/1990 | EP0377356A1 Biological filter for the production of potable water, and related controlling process |
| 07/11/1990 | EP0377131A1 Method and apparatus for disinfecting water |
| 07/11/1990 | CN2059158U Anti-scaling and descaling device for high voltage electric field |
| 07/11/1990 | CN1043687A Technology for comprehensive treatment of three kinds of waste water in reeling mill |
| 07/11/1990 | CN1008726B Device for water magnetization |
| 07/11/1990 | CA2025353A1 Process for preparing basic aluminum compounds |
| 07/11/1990 | CA2007455A1 Water purification process 2 |
| 07/10/1990 | US4940763 Water soluble polymers |
| 07/10/1990 | US4940551 Method for pH control |
| 07/10/1990 | US4940550 Chemical flocculant |
| 07/10/1990 | US4940549 Method for removing toxic metals from agricultural drain water |
| 07/10/1990 | US4940538 Apparatus for decalcifing water by producing turbulence |
| 07/10/1990 | US4940519 Detoxification apparatus and method for toxic waste using laser energy and electrolysis |
| 07/10/1990 | US4940134 Treating used photographic solutions, evaporation, condensation |
| 07/05/1990 | DE3844374A1 Method for removing motile microorganisms from water |
| 07/05/1990 | DE3843679A1 Process for water treatment |
| 07/04/1990 | EP0376835A1 Electrical-treatment device for high-conductivity electrolytes, especially tap or river water ones |
| 07/04/1990 | EP0376813A1 Process for water purification using a polymeric flocculant |
| 07/04/1990 | EP0376126A2 Improvements in water purification systems |
| 07/04/1990 | EP0375739A1 Water clarification system adapted for removing particulate matter of greater than a predetermined size. |
| 07/04/1990 | CN1043484A High efficient waste water purifying agent and its apparatus |
| 07/04/1990 | CN1043432A Apparatus for preparation of mineral liquid |
| 07/04/1990 | CN1008624B Treatment of waste water containing heavy metals by magnetic cast iron powder |
| 07/04/1990 | CN1008623B Process for removing organic materials from aqueous solutions |
| 07/04/1990 | CN1008622B Method and installations for purification of bath water |
| 07/04/1990 | CA2007071A1 Recovery of heavy and precious metals from aqueous solutions |
| 07/03/1990 | US4938958 Antibiotic zeolite |
| 07/03/1990 | US4938939 Preparation of small-pored crystalline titanium molecular sieve zeolites |
| 07/03/1990 | US4938895 Process for removing radioactive ruthenium from aqueous solution |
| 07/03/1990 | US4938877 Unique and effective separation technique for oil contaminated sludge |
| 07/03/1990 | US4938876 Method for separating oil and water emulsions |
| 07/03/1990 | US4938875 Method and apparatus for magnetically treating a liquid |
| 07/03/1990 | US4938874 Tannin/lignin removal system |
| 07/03/1990 | US4938868 Vaporization, spiral condenser |
| 07/03/1990 | US4938856 Process for mild heat treatment of a flowable fluid |
| 07/03/1990 | EP0385972A4 Method for improving the utilization of polyelectrolytes in dewatering aqueous suspensions. |
| 07/03/1990 | CA1271275A1 Sodium-selective cation exchange resins for ammonia- cycle condensate polishing |
| 07/03/1990 | CA1271274A1 System to remove contaminants from water |
| 07/03/1990 | CA1271150A1 Microbial enhancement of polymer viscosity |
| 06/29/1990 | CA2006895A1 Water purification systems |
| 06/28/1990 | WO1990006963A1 Polysiloxane bound photosensitizer for producing singlet oxygen |
| 06/28/1990 | WO1990006899A1 Device for sterilizing liquids by irradiation with ultra-violet light |
| 06/28/1990 | DE3843514A1 Method for preventing sintering of drainages and apparatus for carrying out the method |
| 06/28/1990 | CA2006795A1 Polymeric flocculent water purifying process |
| 06/27/1990 | EP0375671A1 Separation of components of a fluid mixture |
| 06/27/1990 | EP0375587A2 Method and apparatus for cyclic distillation |
| 06/27/1990 | EP0374990A1 Water purification set and chemicals unit therefor |
| 06/27/1990 | EP0374458A2 High performance polymer flocculating agents |
| 06/27/1990 | EP0374457A2 A method of flocculating a dispersion of suspended solids |
| 06/27/1990 | EP0374277A1 Method for removing amine from oil |
| 06/27/1990 | EP0374251A1 Device for separating ferromagnetic materials from fluid media |
| 06/27/1990 | EP0374150A1 Device for treating liquids |
| 06/27/1990 | CN2058674U Miniature device of magnetization, purification, mineralization of potable water |
| 06/27/1990 | CN1043298A Separation process |
| 06/26/1990 | US4937004 Extraction by liquid absorber; recycling; enhanced oil recovery |
| 06/26/1990 | US4937003 Lyophobic detackifiers |
| 06/26/1990 | US4936997 Method of flushing desalination apparatus equipped with reverse osmotic membrane module and apparatus therefor |
| 06/26/1990 | US4936994 Application of cellulase to control industrial slime |
| 06/26/1990 | US4936984 Consumer water filtering apparatus |
| 06/26/1990 | US4936983 Sewage sludge treatment with gas injection |
| 06/26/1990 | US4936979 Swimming pool bacteria and algae control system and method |
| 06/23/1990 | CA2005630A1 Apparatus for dissolving ozone in a fluid |
| 06/21/1990 | DE3940118A1 Slurry distribution into cells around cylinder perimeter - by arm rotated in horizontal plane above cells |
| 06/21/1990 | DE3842740A1 Process for removing impurities from groundwater and a well for carrying out the process |
| 06/21/1990 | DE3842071A1 Process and plant for treating surface water polluted with deicing compositions |
| 06/21/1990 | DE3448262C2 Method of testing sterilising filters of a haemodial filtration apparatus |
| 06/20/1990 | EP0374126A1 Apparatus for the magnetic treatment of fluids |
| 06/20/1990 | EP0373268A1 Oxidation of organic compounds in water |
| 06/20/1990 | EP0373249A1 Biocide water treatment having reduced copper corrosion |
| 06/20/1990 | CN1043114A Dispensation formula and technology for flocculent deodorant |
| 06/19/1990 | US4935153 Method for the control of biofouling in recirculating water systems |
| 06/19/1990 | US4935149 Added formaldehyde scavenging agent |
| 06/19/1990 | US4935148 Process for microaquaculture and pollution control |
| 06/19/1990 | US4935133 Magnetic treater |
| 06/19/1990 | US4935116 Water purification device |
| 06/19/1990 | US4935113 Spraying effluent over an electric field, draining and density separation of coloring particles |
| 06/19/1990 | US4935064 Iodine sterilization of deionized water in semiconductor processing |
| 06/19/1990 | CA2005681A1 Cationic microemulsified polymers |
| 06/19/1990 | CA2005492A1 Water purification set and chemicals unit therefor |
| 06/19/1990 | CA1270419A1 Synergistic biocide of 1,5-pentanedial and methylene bis thiocyanate |
| 06/19/1990 | CA1270418A1 Synergistic biocide of 2-(thiocyanomethyl-thio) benzothiazole with a mixture of 5-chloro-2-methyl-4- isothiazolin-3-one and 2-methyl-4-isothiazolin-3-one |
| 06/14/1990 | WO1990006336A1 Polyelectrolytes modified by reaction with anhydride group containing copolymers and their use as flocculents |
| 06/14/1990 | WO1990006288A1 Method and apparatus for treating water |