| Patents for C02F 9 - Multistep treatment of water, waste water or sewage (41,429) |
|---|
| 06/30/1993 | CN1073666A High-effective treating process of glue wastewater |
| 06/29/1993 | US5223162 Washing composition for inhibiting stress cracking in poly(alkylene terephthalate) articles and methods of use therefor |
| 06/29/1993 | US5223144 Precipitation of heavy metal compounds by adjusting ph and addition of organic or inorganic salts, for purification of spent antifreezes or heat exchanging fluids |
| 06/29/1993 | US5223140 Anaerobic, then aerobic processes |
| 06/29/1993 | US5223132 Water filtering apparatus |
| 06/23/1993 | EP0547521A1 Process for the precipitation of aqueous polymer dispersions containing polyvinylalcohol |
| 06/22/1993 | US5221480 Concurrent removal of various organics and heavy metals |
| 06/22/1993 | US5221473 Filter cartridge assembly for a reverse osmosis purification system |
| 06/18/1993 | CA2080030A1 Multi-cell transportable bioslurry reactor |
| 06/17/1993 | DE4140877A1 Transportable continuous sewage treatment |
| 06/09/1993 | DE4140281A1 Animal body and manure disposal - uses continuous steam sterilising with air and water cleaning, to give virtual waste-free operation |
| 06/08/1993 | US5217623 Method of detoxifying cyanide waste |
| 06/08/1993 | US5217617 Water treatment |
| 06/08/1993 | US5217607 Water decontamination system with filter, electrostatic treatment and UV radiation chamber |
| 06/02/1993 | EP0544225A1 Process for pre-purification of waste waters |
| 05/27/1993 | WO1993010051A1 Apparatus for generating electrolytic water |
| 05/27/1993 | DE4138848A1 Sepn. process for removing emulsified components, e.g. hydrocarbon from water - by flotation, with recirculation of water from clean water tanks to mixer with aeration device |
| 05/27/1993 | DE4138695A1 Transportable continuous sewage treatment |
| 05/26/1993 | EP0543112A1 Process for degrading noxious matters in water by means of hydrogen peroxide in combination with UV-irradiation |
| 05/26/1993 | CN1020887C Portable water purifying devices |
| 05/25/1993 | US5213773 Miniature, efficient ozone purification or treatment system |
| 05/18/1993 | US5211853 Method for the removal of chromium compounds from aqueous solutions |
| 05/18/1993 | US5211851 Purification |
| 05/18/1993 | US5211843 Mobile apparatus for environmentally treating spent etchant safely |
| 05/13/1993 | WO1993008936A1 Method and device for removing one or more contaminations from a bulk material |
| 05/11/1993 | US5209854 Pulp waste color removal with diallyl dimethyl ammonium chloride copolymers |
| 05/11/1993 | US5209843 Process and apparatus for waste water treatment |
| 05/11/1993 | US5209774 Discharged from a chlor-alkali plant, leaching with acid and sodium hypochlorite, thickening |
| 05/05/1993 | EP0539459A1 Method and device for purifying air |
| 05/04/1993 | US5207926 Removal of rusts from water treatment process with sodium hydroxide |
| 05/04/1993 | US5207925 Process for the detoxification of cyanide-containing aqueous solutions |
| 05/04/1993 | US5207923 Automotive parts cleaning |
| 05/04/1993 | US5207921 Removal of fats, oils and greases; monitoring pH and turbidity; air sparging, skimming, filtration, and exposure to ultravoilet radiation |
| 05/04/1993 | US5207896 Wastewater treatment mechanism |
| 04/29/1993 | WO1993008219A1 Improved process for removing organic polymer impurities from aqueous phases |
| 04/29/1993 | WO1993008129A1 Chemical oxidative process for purifying highly contaminated waste water |
| 04/29/1993 | WO1993007964A1 Photochemical reactor chamber design and lamp configuration |
| 04/29/1993 | WO1993007956A1 Process for removing arsenic from water |
| 04/29/1993 | DE4135079A1 Cleaning mercury-contaminated soil or rubble - using wet vibratory sieve units and rake classifiers |
| 04/28/1993 | EP0538928A1 Method and device for cleaning soil polluted by at least one heavy metal |
| 04/22/1993 | DE4223276A1 Verbessertes verfahren zur abtrennung organischer polymer-verunreinigungen aus waessrigen phasen Improved methods for the segregation of organic polymeric impurities from aqueous phases |
| 04/21/1993 | EP0537694A1 Process for treating effluent from flue-gas desulfurization system and apparatus thereof |
| 04/21/1993 | EP0537528A1 Controlling apparatus for continuous electrolytic ion water producing apparatus |
| 04/21/1993 | EP0399035B1 Method of removing arsenic and/or other amphoteric elements from sludge and solid waste materials |
| 04/20/1993 | US5204007 Method of clarification of waste water for production of animal feeds |
| 04/15/1993 | WO1993007094A1 Process and device for recovering components from dyestuff dispersions |
| 04/15/1993 | WO1993006951A1 Installation for decontaminating soil |
| 04/15/1993 | DE4212196A1 Low emission waste free treatment of agricultural by prods. - by continuous prodn. including solids sepn. filtration and reverse osmosis, with recycling of water |
| 04/14/1993 | EP0537119A1 Apparatus for periodically sterilizing/disinfecting an online water filter to produce water for medical uses |
| 04/14/1993 | EP0164402B1 Recovery of organic acids, catalysts and water from terephthalic acid manufacture |
| 04/13/1993 | US5202033 In situ method for decreasing heavy metal leaching from soil or waste |
| 04/13/1993 | US5202030 Method for removing organic contaminants from acidic aqueous effluent |
| 04/10/1993 | CA2078749A1 Controlling apparatus for continuous electrolytic ion water producing apparatus |
| 04/07/1993 | EP0536017A1 Process and installation for biological waste water treatment |
| 04/07/1993 | EP0535607A2 System for purifying and degasifying water by reverse osmosis |
| 04/07/1993 | EP0534985A1 Water purification system with filter cleaning mechanism |
| 04/07/1993 | EP0323970B1 Sewage treatment |
| 04/06/1993 | US5200089 Adding ferrous sulfate and a water-soluble cationic amine polymer formed by reaction of epichlorohydrin and dimethylamine; synergistic |
| 04/06/1993 | US5200088 Reduction to trivalent chromium compound by using a reducing agent sodium dithionate; precipitation, coprecipitation, |
| 04/06/1993 | US5200087 Heating, reducing with metal, vasification, reducing with metallic salt, cooling |
| 04/06/1993 | US5200085 Circulation; heating; pressurization; granulation; adiabatic expansion; separation; treatment of slaughterhouse waste |
| 04/06/1993 | US5200082 Method for removing toxic substances from industrial and agricultural waste water |
| 04/01/1993 | DE4131216A1 Removing contaminants at or above ground water surface - while flooding overlying soil with protective gas |
| 03/30/1993 | US5198118 Copper-zinc alloy |
| 03/25/1993 | DE4131122A1 Dishwasher waste water treatment - has a buffer to flock contained matter for sepd. by a sieve or filter |
| 03/25/1993 | CA2078944A1 Self-contained, purified drinking water refrigerator storage apparatus |
| 03/23/1993 | US5196124 Method of controlling the production of radioactive materials from a subterranean reservoir |
| 03/21/1993 | CA2074576A1 Method of making a filler from automotive paint sludge, filler, and sealant containing a filler |
| 03/18/1993 | WO1993004985A1 System for treatment of photographic wastewater effluent and process therefor |
| 03/18/1993 | WO1993004984A1 Removal of cyanide from water |
| 03/18/1993 | DE4130923A1 Recycle treatment of wash water contg. acrylate and/or protein - by addn. of hydroxide in alkaline medium, esp. for water from flexoprinting |
| 03/17/1993 | WO1993025479A1 Method of eliminating polycyclic and/or aliphatic hydrocarbon derivatives from industrial effluents |
| 03/17/1993 | EP0531864A1 Process for the treatment of waste water containing salts |
| 03/17/1993 | EP0531783A1 Waterdraining system for an apparatus producing ion-containing water by continuous electrolysis |
| 03/17/1993 | CA2138274A1 Process for the elimination of polycyclic and/or aliphatic hydrocarbon derivatives present in industrial wastewater |
| 03/16/1993 | US5194163 Purification of waste streams |
| 03/12/1993 | CA2078059A1 System for treatment of photographic wastewater effluent and process therefor |
| 03/11/1993 | DE4123354C1 Mobile water-aerating or oxygenating equipment - includes delivery pipe with distribution having vertical pipe rotatable about bearing by water streams |
| 03/10/1993 | EP0530219A1 Process for treating waste water. |
| 03/09/1993 | US5192453 Wet oxidation process for ACN waste streams |
| 03/04/1993 | WO1993004003A1 Process and device for treating polluted liquids |
| 03/03/1993 | EP0529865A1 Pulp mill wastewater color removal |
| 03/03/1993 | EP0529149A1 Flotation plant with vertical lamellae |
| 03/03/1993 | CN2127709Y Magnetizer for purifying and sterilizing drinking water |
| 03/02/1993 | US5190672 Method for thermal disposal of sewage sludge |
| 03/02/1993 | US5190670 Process and system for separating and condensing contaminants from a liquid |
| 03/02/1993 | US5190669 Synergistic ozone and hydrogen peroxide, bleaching |
| 03/02/1993 | US5190659 Contamination removal system employing filtration and plural ultraviolet and chemical treatment steps and treatment mode controller |
| 03/02/1993 | US5190065 Self-contained washing unit for printed circuit boards |
| 03/01/1993 | CA2075755A1 Water draining system for apparatus for producing ion-containing water by employing electrolyzing process |
| 02/25/1993 | DE4127975A1 Cleaning system for rinsing waste containers - treats different containers according to contents for subsequent reuse for identical waste |
| 02/18/1993 | WO1993002967A1 Dewatering of aqueous suspensions |
| 02/18/1993 | WO1993002966A1 Dewatering of aqueous suspensions |
| 02/18/1993 | WO1993002763A1 Soil and sludge treatment apparatus and method including agitation, aeration and recirculation |
| 02/18/1993 | CA2114437A1 Dewatering of aqueous suspensions |
| 02/16/1993 | US5186916 Method for purifying flue-gasses |
| 02/13/1993 | CA2075308A1 Pulp and paper mill wastewater color removal |
| 02/11/1993 | DE4125990A1 Water purificn. contg. tenside for industrial water - by addn. of organic flocculant, inorganic precipitant, and removing coagulated solids, for soil purifin. or textile washing water dispersed solid particle sepn. |
| 02/10/1993 | EP0526997A1 Removal of dissolved chelates from aqueous solutions |
| 02/09/1993 | US5185085 Water craft and method for treating a body of water |