| Patents for C02F 1 - Treatment of water, waste water, or sewage (145,124) |
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| 12/29/1981 | CA1115043A1 Method of reducing aerosolization of wastewater |
| 12/29/1981 | CA1115024A1 Process of hydrometallurgical treatment for eliminating impurities from a solution containing dissolved metals |
| 12/24/1981 | WO1981003656A1 Method for separating liquids floating at the water surface |
| 12/24/1981 | WO1981003655A1 Apparatus for desalinizing brine |
| 12/24/1981 | WO1981003625A1 Flotation cell |
| 12/23/1981 | EP0042331A1 Process for the treatment of aqueous wastes containing organic substances and mineral salts |
| 12/23/1981 | EP0041945A1 Improvements in apparatus for use in the magnetic treatment of liquids |
| 12/22/1981 | US4307201 Highly adsorptive macroporous polymers |
| 12/22/1981 | US4306978 Method for lime stabilization of wastewater treatment plant sludges |
| 12/22/1981 | US4306971 Improved seal, safe for consumer |
| 12/22/1981 | US4306952 For removal of deposits on a cathode by periodic reversal of polarity |
| 12/22/1981 | CA1114968A1 Composition for the clarification and detackification of paint spray booth wastes |
| 12/22/1981 | CA1114966A1 Method of purifying tenside and detergent contaminated waste waters |
| 12/22/1981 | CA1114963A1 Means for separation of gas and solids from waste mixed liquor |
| 12/22/1981 | CA1114962A1 Long vertical shaft bioreactor of simplified design |
| 12/22/1981 | CA1114960A1 Method for the froth flotation separation and treatment of slowly biodegradable components in a waste treatment system |
| 12/16/1981 | EP0041929A1 Apparatus for regenerating the resin content of a water-softener cartridge |
| 12/16/1981 | EP0041819A2 Removal of nitrous material from nitric acid streams |
| 12/16/1981 | EP0041728A1 Flotation cell |
| 12/16/1981 | EP0041717A1 Apparatus for the purification of scalding water |
| 12/16/1981 | EP0041537A1 Method and device for removing floating liquid impurities, particularly oil, from a flowing water surface. |
| 12/15/1981 | US4306081 Symmetrical quaternary ammonium compounds and their use in heavy metals recovery |
| 12/15/1981 | US4306080 Process for the purification of industrial effluents |
| 12/15/1981 | US4305860 Stable, pumpable, solvent-free colloidal polyampholyte latices, their preparation and use in paper |
| 12/15/1981 | US4305829 Process for flocculating an aqueous suspension of particles with quaternary ammonium graft copolymers |
| 12/15/1981 | US4305828 Method of introducing oxygen into water and container for the performance of such method |
| 12/15/1981 | US4305827 Heavy metal adsorbents of high selectivity, process for production of same, and adsorption process |
| 12/15/1981 | US4305826 Method and apparatus for softening and filtering water |
| 12/15/1981 | CA1114533A1 Process for neutralising spent nitric-fluorhydric acids |
| 12/15/1981 | CA1114532A1 Process and means for breaking emulsions |
| 12/15/1981 | CA1114329A1 Process for producing sodium hypochlorite |
| 12/15/1981 | CA1114325A1 Energy efficient process and apparatus for desalinizing water |
| 12/15/1981 | CA1114306A1 Oil collecting arrangement |
| 12/15/1981 | CA1114176A1 Process for recovering heavy metal ions from dilute aqueous solution |
| 12/10/1981 | WO1981003484A1 Dewatering fine coal slurries using organopolysiloxanes |
| 12/10/1981 | WO1981003483A1 Dewatering fine coal slurries using two types of organopolysiloxanes |
| 12/09/1981 | EP0041480A1 Separating oil-in-water emulsions by electrolysis |
| 12/09/1981 | EP0041251A1 Method of removing fine suspended solids from effluent streams |
| 12/08/1981 | US4304996 Water sterilizer and organic matter measurement instrument |
| 12/08/1981 | US4304873 Preparation of expanded flexible polyurethane foam micro-bits |
| 12/08/1981 | US4304687 Catalyst for the purification of polluted water |
| 12/08/1981 | US4304673 Wastewater treatment process |
| 12/08/1981 | US4304672 Stored blood and liquid system pH control method and apparatus |
| 12/08/1981 | US4304666 And a system to remove silica |
| 12/08/1981 | US4304648 Degassing |
| 12/08/1981 | US4304647 Arrangement for the purification of liquids by means of anodic oxidation |
| 12/08/1981 | US4304638 Having an auxiliary reboiler |
| 12/08/1981 | US4304599 Heavy metal removal process |
| 12/08/1981 | US4304590 Methods and compositions for the control of harmful organisms containing aliphatic primary diamines |
| 12/08/1981 | CA1114080A1 Method and an agent for chemical purification of water by means of chemical precipitation and magnetic sludge separation |
| 12/08/1981 | CA1114079A1 Process for clarifying aqueous suspensions of particulate solids |
| 12/02/1981 | EP0040946A1 Ozonization system for drinking water disinfection |
| 12/02/1981 | EP0040906A2 Dewatering fine coal slurries using organopolysiloxanes |
| 12/02/1981 | EP0040903A2 Dewatering fine coal slurries using two types of organopolysiloxanes |
| 12/02/1981 | EP0040827A1 A method for increasing the cross-flow microfiltration fluxes of waste waters containing suspended solids and/or emulsified oil |
| 12/01/1981 | US4303533 Method of removing fine suspended solids from effluent streams |
| 12/01/1981 | US4303532 Dewatering of slimes |
| 12/01/1981 | US4303531 Method for adsorbing and recovering phenols |
| 12/01/1981 | US4303517 Liquid treatment apparatus |
| 12/01/1981 | US4303515 Chemical dispenser for bodies of water |
| 12/01/1981 | US4303512 Apparatus for indicating the loading on an ion exchanger with respect to a specific metal or group of metals |
| 12/01/1981 | US4303511 Method of purifying tenside and detergent contaminated waste waters |
| 12/01/1981 | US4303469 Combustion products in a reducing gas |
| 12/01/1981 | US4303441 Metal recovery process |
| 12/01/1981 | US4303342 Method and apparatus for detecting foreign matters in liquids |
| 12/01/1981 | CA1113617A1 Waste water process |
| 12/01/1981 | CA1113615A1 Process for the enzymatic treatment of waste water of wheat starch plants |
| 12/01/1981 | CA1113248A1 Process for gas cleaning with reclaimed water and apparatus for water reclamation |
| 12/01/1981 | CA1113221A1 Multichamber photoreactor |
| 11/26/1981 | WO1981003340A1 Aeration feeder for coal dust supply to blast furnace hearth |
| 11/25/1981 | EP0040411A1 Apparatus for separating mixtures in the liquid phase |
| 11/24/1981 | US4302677 Control arrangement for fluid sterilizing apparatus |
| 11/24/1981 | US4302430 Process for releasing ammonia bound in coal water |
| 11/24/1981 | US4302332 Centrifugal thickener |
| 11/24/1981 | US4302328 Geothermal brine treatment |
| 11/24/1981 | US4302297 Desalination apparatus with power generation |
| 11/24/1981 | CA1113193A1 Method and a system for treating liquid, in particular waste water |
| 11/24/1981 | CA1113022A1 Device for collecting materials as for example oil floating on a water surface |
| 11/24/1981 | CA1113021A1 Filtering in tower filter with reversed water jet filter regeneration |
| 11/24/1981 | CA1112881A1 Method and extraction reagent for extraction of metal ions from an agueous solution |
| 11/18/1981 | EP0040129A1 High capacity oil recovery device for cleaning the surface of rough waters |
| 11/18/1981 | EP0040028A1 Water softening and reverse osmosis treatment system |
| 11/18/1981 | EP0039819A1 Process for treating a liquid waste composition containing copper ions and an organic complexing agent |
| 11/18/1981 | EP0039711A1 Amphoteric water-in-oil self-inverting polymer emulsion |
| 11/17/1981 | US4301097 Using portable tower |
| 11/17/1981 | US4301014 Hydrolysis, precipitation of solubles with calcium hydroxide, catalytic oxidation of gases |
| 11/17/1981 | US4301008 Skimmer for removing the surface layer from a stretch of liquid |
| 11/17/1981 | CA1112774A1 Method for removing ammonia from wastewater |
| 11/17/1981 | CA1112663A1 N-sulphoalkane-aminoalkane phosphonic acids and their alkali salts and process for their production |
| 11/17/1981 | CA1112583A1 Separation equipment |
| 11/17/1981 | CA1112581A1 Recovering dye by reverse osmosis through feed-built medium on a support |
| 11/17/1981 | CA1112423A1 A process for the conversion of soluble thiosulfate in an effluent liquor to sulfates |
| 11/12/1981 | WO1981003169A1 Processing methods for the oxidation of organics in supercritical water |
| 11/11/1981 | EP0039522A2 Process for the preparation of a liquid-absorbing and shock-absorbing material |
| 11/10/1981 | US4299786 Waste heat disposal process |
| 11/10/1981 | US4299701 Magnetic fluid treating apparatus |
| 11/10/1981 | US4299700 Having a flared inner casing to prevent slippage |
| 11/10/1981 | US4299613 Controlled release of trace nutrients |
| 11/10/1981 | US4299599 Using an adsorbent to produce liquid water from air moisture |
| 11/04/1981 | EP0039324A1 Method of processing hydrosilicofluoric acid produced during the wet decomposition of phosphates, and arrangement for carrying out this method |