| Patents for C02F 1 - Treatment of water, waste water, or sewage (145,124) |
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| 05/03/1989 | EP0313827A2 Method and apparatus for purifying impure water |
| 05/03/1989 | EP0313633A1 Method and apparatus for treating water, water treated thus obtained and its utilization. |
| 05/03/1989 | EP0209533B1 Process and system for the flocculation substances which can be flocculated in suspensions, especially for cleaning the discharge water of deinking plant |
| 05/03/1989 | DE3835965A1 Verfahren zum entsalzen von salzhaltigem wasser, insbesondere von grubenwasser A method of desalinating salt-containing water, especially mine water |
| 05/03/1989 | DE3735903A1 Process for the oxidation of washings having a low thiosulphate concentration |
| 05/03/1989 | CN2036944U Sewage treatment equipment for hospital and service facilities |
| 05/03/1989 | CN2036943U Electromagnet type magnetic water unit |
| 05/03/1989 | CN2036942U Magnetic water health recovery unit |
| 05/03/1989 | CN2036859U Na ion exchanger with internal scrubbed floating bed |
| 05/03/1989 | CN2036856U Active reaction, core-burning and heating type device for oxygen desorbing and removing |
| 05/02/1989 | US4826822 Liquid suspensions of polyene antibiotics and use thereof for slime control in industrial waters |
| 05/02/1989 | US4826728 Free-flow, non-agglomerating, storage stable |
| 05/02/1989 | US4826624 Dispersing liquid hydrocarbon into a second liquid |
| 05/02/1989 | US4826606 Manufacture and use of polymer modified aluminum hydroxide and basic aluminum sulfate |
| 05/02/1989 | US4826605 Regenerating a caustic etch solution |
| 05/02/1989 | US4826604 Process for separation of cesium ions from aqueous solutions |
| 05/02/1989 | US4826594 Portable water conditioning apparatus |
| 05/02/1989 | US4826575 Apparatus for production of high-purity water by microwave technology |
| 05/02/1989 | US4825528 Chemical depletion signal for a swimming pool chemical dispenser |
| 04/27/1989 | DE3733419A1 Process for purifying water contaminated with pollutants, especially hydrocarbons |
| 04/26/1989 | EP0313489A1 Process and installation for the treatment of ammoniacal waters |
| 04/26/1989 | EP0313272A2 A method of inhibiting the growth of microorganisms in aqueous liquids |
| 04/26/1989 | EP0313201A1 Recovery of germanium from aqueous solutions by solvent extraction |
| 04/26/1989 | EP0312536A1 Method of treatment of the circulation water of a paper mill |
| 04/26/1989 | CN2036442U Capillary membrane distilling device with casing pipe of thin wall |
| 04/25/1989 | US4825083 Ultraviolet water treatment apparatus |
| 04/25/1989 | US4824894 Biodegradable organosol flocculants |
| 04/25/1989 | US4824607 Ethanol |
| 04/25/1989 | US4824577 Phenol, melamine, formaldehyde removal process |
| 04/25/1989 | US4824576 Process for removal, separation and recovery of heavy metal ions from solutions using activated alumina including acid treated activated alumina |
| 04/25/1989 | US4824575 Ion-exchanging |
| 04/25/1989 | US4824572 Method and apparatus for treating household waste water |
| 04/25/1989 | US4824565 Personal, portable, disposable tap water filter |
| 04/25/1989 | US4824563 Equipment for treating waste water |
| 04/25/1989 | US4824561 Wastewater treatment |
| 04/25/1989 | US4823826 Process and apparatus for introducing aqueous chloride dioxide into high pressure water injection wells |
| 04/24/1989 | EP0293370A4 Fluid energizing method and apparatus. |
| 04/20/1989 | WO1989003434A1 Supported heteropolycyclic compounds in the separation and removal of late transition metals |
| 04/20/1989 | WO1989003369A1 Improved process and equipment for purifying treatment and utilization of waste-waters from the dairy industry |
| 04/20/1989 | DE3734281A1 Method for dewatering water-containing and, in particular, contaminated water-containing sludge and solids aggregates, and appliance suitable therefor |
| 04/20/1989 | DE3733583A1 Method and apparatus for producing very fine air bubbles for the purpose of floatation of sludges |
| 04/19/1989 | EP0312104A2 Process for removing pyrogens |
| 04/19/1989 | EP0312079A2 Full water treatment apparatus for use in soft drink dispensing systems |
| 04/19/1989 | EP0311954A2 Use of sulfamic acid to inhibit phosphonate decomposition by chlorine-bromine mixtures |
| 04/19/1989 | EP0311632A1 Surface active lactams. |
| 04/19/1989 | CN2036176U Vertical electromagnetic water device |
| 04/19/1989 | CN2036175U Emulsification sewage purification apparatus |
| 04/18/1989 | US4822579 Device for the deacidification of water |
| 04/18/1989 | US4822571 Metering mechanism for a swimming pool chemical dispenser |
| 04/18/1989 | US4822497 Method for solids separation in a wet oxidation type process |
| 04/18/1989 | US4822496 Process for the treatment of effluent containing cyanide and toxic metals, using hydrogen peroxide and trimercaptotriazine |
| 04/18/1989 | US4822494 Ph adjustment, metal hydroxide separation, hydrogen peroxide oxidation to urea, further sodium hypochlorite oxidation |
| 04/18/1989 | US4822491 Complexing |
| 04/18/1989 | US4822490 Bacterial compositon and method for recovery of oil-polluted water and soil |
| 04/18/1989 | US4822473 Electrode for generating an electrostatic field |
| 04/18/1989 | US4822472 Electrolytic cell for a disinfection device |
| 04/18/1989 | US4822455 Distilling and desalination apparatus |
| 04/13/1989 | DE3832309A1 Filtereinheit fuer wasserfiltriereinrichtung, insbesondere fuer ein aquarium Filter unit for wasserfiltriereinrichtung, especially for an aquarium |
| 04/13/1989 | DE3733532A1 Process for disposing of a sewage sludge produced in wastewater purification |
| 04/13/1989 | DE3732661A1 Process for recovering ammonium sulphate and sodium sulphate from aqueous solutions |
| 04/13/1989 | DE3732329A1 Process for treating heavy-metal-containing waste waters |
| 04/12/1989 | EP0311220A2 Improvements in or relating to the treatment of multi-phase systems |
| 04/12/1989 | EP0311092A2 Electrode-less detector |
| 04/12/1989 | EP0311013A2 Chlorine dioxide oxidation of mill effluent color |
| 04/12/1989 | EP0283509A4 The control of biofouling in aqueous systems by non-polymeric quaternary ammonium polyhalides. |
| 04/12/1989 | CN2035651U Integral high-efficient precipitation and concentration device |
| 04/12/1989 | CN1032328A Method for processing waste electroplating liquor containing chromium |
| 04/12/1989 | CN1032300A Flocculent for purifying waste liquor of print and dye |
| 04/11/1989 | US4820990 For sensing and quantifying |
| 04/11/1989 | US4820799 Polymerization of acrylic or methacrylic acid with ammonium carbonate and polyhydric alcohol |
| 04/11/1989 | US4820645 Testing polyelectrolytes |
| 04/11/1989 | US4820450 Composition for precipitating dirt and other contaminants from wash water and method of cleaning |
| 04/11/1989 | US4820424 Water erodable shapes containing soluble particles of multivalent metal coagulant and polymeric flocculant |
| 04/11/1989 | US4820422 Connecting into system casing filled with movable spheres |
| 04/11/1989 | US4820413 Annular module for filtering a pressurized liquid by reverse osmosis |
| 04/11/1989 | US4820408 Double valve apparatus |
| 04/11/1989 | US4820343 Nonaqueous liquid with complexing agents carries metal ions from one aqueous liquid, releases them to another |
| 04/06/1989 | WO1989002874A1 Method and apparatus for solids separation in a wet oxidation type process |
| 04/06/1989 | WO1989002873A1 Water treating apparatus |
| 04/06/1989 | DE3731920A1 Process for removing heavy metal traces from waste waters by absorption to chemically modified charcoal |
| 04/06/1989 | DE3731658A1 Active filter unit for chemical and biological water treatment |
| 04/06/1989 | DE3731096A1 Apparatus for softening water |
| 04/05/1989 | EP0310264A2 Paper conversion plant waste treatment process |
| 04/05/1989 | EP0309663A1 Central control valve for water treatment system |
| 04/05/1989 | EP0309640A1 Apparatus for connection and better use of ion exchangers in industrial water processing |
| 04/05/1989 | EP0309546A1 Water purification system with purified water cooling apparatus |
| 04/05/1989 | CN2035350U Acid alcali active ion water generator |
| 04/05/1989 | CN1032112A Cartridge type filter for water purification and the like |
| 04/04/1989 | US4818503 Extraction process for removing and recovering metals from aqueous solutions |
| 04/04/1989 | US4818416 To correct chemical, biological or other imbalances, dispensing treatment agent based on volume passed over and detected by boat or vesel |
| 04/04/1989 | US4818414 Retaining waste filtrate |
| 04/04/1989 | US4818413 With chlorine-containing oxidant and bromide salt |
| 04/04/1989 | US4818412 Apparatus and process for feeding hypochlorite solution |
| 04/04/1989 | US4818411 Deoxygenation process |
| 04/04/1989 | US4818395 Device for eliminating scale and for preventing the formation of scale |
| 04/04/1989 | US4818391 Integral Clarifier |
| 04/04/1989 | US4818345 Distillation apparatus |
| 04/04/1989 | US4818344 Water distilling apparatus |
| 04/04/1989 | US4818293 Stable slurries comprising powdered activated carbon |
| 04/04/1989 | US4817214 Pool cleaning chlorine envelope |