| Patents for B01D 21 - Separation of suspended solid particles from liquids by sedimentation (18,338) |
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| 04/29/1980 | CA1076722A1 Apparatus for treatment of water by flocculation and decantation |
| 04/22/1980 | US4199451 Split flow water treatment plant |
| 04/16/1980 | EP0009718A1 Precipitation agent for removing phosphates from waste water, its use therefor and a process for removing phosphates from waste water |
| 04/15/1980 | CA1075618A1 Sedimentation tank with rotary yieldable rake arm structure |
| 04/08/1980 | CA1074998A1 Separating coal particles from water |
| 04/01/1980 | US4196080 Gravity settling process |
| 04/01/1980 | US4196078 Process and apparatus for dewatering granulated material, especially granulated blast furnace slag |
| 04/01/1980 | CA1074711A1 Clarifiers |
| 03/25/1980 | US4195028 Granular flocculants and their manufacture |
| 03/25/1980 | US4194976 Gravitational separator having membrane baffles therein |
| 03/25/1980 | US4194969 Modifying formation of slimes by adding water soluble salts of aluminum. magnesium or zirconium |
| 03/25/1980 | CA1074278A1 Recovery of drilling fluids |
| 03/25/1980 | CA1074204A1 Composition and method for dispersing high molecular weight flocculant polymers in water |
| 03/25/1980 | CA1074082A1 Process for the agglomeration of fines, in particular coal fines |
| 03/18/1980 | US4193877 Apparatus for clarifying liquid |
| 03/18/1980 | US4193871 Traveling bridge settling tank |
| 03/18/1980 | CA1073774A1 Aluminium hydroxychloride compositions |
| 03/11/1980 | US4192752 Continuous decantation clarifier for liquids containing suspended solids |
| 03/11/1980 | US4192747 Liquid-solid separator |
| 03/11/1980 | US4192746 Liquid clarification system |
| 03/11/1980 | US4192745 Reclamation of cement slurry |
| 03/11/1980 | US4192744 With dicarboxy substituted tertiary amide as flocculant for iron oxides |
| 03/11/1980 | US4192392 Recovery of drilling fluids |
| 03/11/1980 | CA1073369A1 Carbon decanter |
| 03/11/1980 | CA1073368A1 Three phase separation |
| 03/04/1980 | CA1073126A1 Treatment of pulp and paper effluents |
| 02/26/1980 | US4190541 Waste water treatment apparatus |
| 02/20/1980 | EP0008246A1 Process for preparing aqueous solutions of olefinic unsaturated monomers in view of their photopolymerisation |
| 02/19/1980 | US4188726 Level-determining device |
| 02/19/1980 | CA1072021A1 Continuously operating sedimentation tank with pier supported rake structure |
| 02/12/1980 | CA1071543A1 Overload protector for sewage treatment device |
| 01/29/1980 | US4186167 Cationic polyvinylimidazoline |
| 01/29/1980 | CA1070866A1 Process for compacting and wringing fluid sludge containing fibrous material |
| 01/23/1980 | EP0006925A1 Method and apparatus for cleaning cutting fluid. |
| 01/23/1980 | EP0006867A1 Apparatus and process for ordinary and submarine mineral beneficiation |
| 01/22/1980 | US4184957 Sewage treatment |
| 01/22/1980 | US4184955 Frustoconical sections, suppressing turbulence |
| 01/22/1980 | US4184954 Tube settler |
| 01/22/1980 | US4184949 Process for separating hydrocarbon pollution from a hydroorganic medium |
| 01/22/1980 | CA1070108A1 Method and apparatus for recovering by-products silt fine from a slurry thereof |
| 01/15/1980 | CA1069833A1 Sewage treatment tank and tube settler |
| 01/09/1980 | EP0006777A1 A process for preparing polymers usable as flocculants |
| 01/09/1980 | EP0006370A1 Preparation of water-soluble polymers usable as flocculants |
| 01/09/1980 | EP0006101A1 Process for chrome recovery from industrial waste and the like |
| 01/01/1980 | US4181614 Sludge removal apparatus |
| 01/01/1980 | CA1069226A Waste treatment and solids separating system |
| 12/25/1979 | US4180643 Acrylamide or methacrylamide quaternary compounds |
| 12/18/1979 | US4179522 Certain complex salts of mono carboxylic acids used as preservatives |
| 12/18/1979 | US4179376 Device for purification of liquids |
| 12/18/1979 | US4179370 Flocculating agent comprising water-in-oil emulsion of stabilizer plus NH-active polymer carrying formaldehyde and amine radicals |
| 12/18/1979 | US4179368 G-factor compensated hydraulic flocculation system |
| 12/11/1979 | US4178252 Device for separating particles from a fluid suspension and method for so doing |
| 12/11/1979 | US4178243 Method and apparatus for controlled dewaterizing of coal treatment underflow |
| 12/11/1979 | CA1068019A1 Process for cleaning of a dispersion or dispersed particles |
| 12/04/1979 | CA1067628A1 Method and apparatus for controlled dewaterizing of coal treatment underflow |
| 12/04/1979 | CA1067419A1 Sludge scraper mechanism |
| 11/29/1979 | WO1979000975A1 Process for treating crude waters and waste waters and application thereof |
| 11/27/1979 | US4176068 Method for the separation from each other of the components of a mixture of water, oil and dirt (sludge) as well as apparatus for performing said method |
| 11/27/1979 | US4176062 Process for the separation of foam from effluents of coke oven plants |
| 11/27/1979 | US4175312 Method of assembling a settling tank |
| 11/27/1979 | CA1067221A1 Method for treating liquid wastes |
| 11/20/1979 | US4175039 Washer/separator system for drilling cuttings in water environment oil wells |
| 11/14/1979 | EP0005390A1 Process for treatment of raw and waste water and its application |
| 11/13/1979 | US4174281 Countercurrent decantation |
| 11/13/1979 | US4174278 Flocculation, dehydration using lime, iron chloride and iron sulfate and anionic polyacrylamide |
| 11/06/1979 | US4173534 Sludge thickening apparatus and process |
| 11/06/1979 | CA1065767A1 Floating skimmer for cleaning the surface of a body of liquid |
| 11/06/1979 | CA1065765A1 Sludge removal system and settling tank combination |
| 11/01/1979 | WO1979000884A1 Regeneration process of a filtering apparatus and device for implementing such process |
| 10/31/1979 | EP0004986A1 Apparatus for adding dissolved chemicals to water, and its application |
| 10/30/1979 | US4172789 Process for clarifying liquids loaded with solid substances in suspension |
| 10/23/1979 | US4172040 Sediment raking device |
| 10/16/1979 | CA1064406A1 Compact velocity gradient coalescer with lamellar separator |
| 10/09/1979 | US4170558 Includes sedimentation trap |
| 10/09/1979 | US4170555 Methods and apparatus for centrifugal treatment of fluids containing impurities in suspension |
| 10/09/1979 | US4170553 Process and apparatus for the controlled flocculating or precipitating of foreign substances from a liquid |
| 10/09/1979 | US4170552 Method for coalescing mercury particles |
| 10/09/1979 | CA1064195A1 Process for removing water from water soluble polymer |
| 10/09/1979 | CA1064182A1 Composition and method for dispersing high molecular weight flocculant polymers in water |
| 10/09/1979 | CA1064016A1 Serial eductors mixer for polymer dissolution |
| 10/09/1979 | CA1063974A1 Hydrocyclone system including axial feed and tangential transition sections |
| 10/09/1979 | CA1063973A1 U-shaped auger conveyor inlet for liquid-solid separations |
| 09/18/1979 | US4168232 Method and apparatus for recycling water in a car wash |
| 09/18/1979 | US4168231 Method and apparatus for recycling water in a car wash |
| 09/18/1979 | CA1062821A1 Reactor for purification of water by fluid filtration |
| 09/11/1979 | CA1062175A1 Coalescer comprising a vertical tube |
| 09/05/1979 | EP0003859A1 A device for treating waste water |
| 09/04/1979 | US4166828 Preparation of N-(aminomethyl)-α,β-ethylenically unsaturated carboxamides and their polymers |
| 08/28/1979 | CA1061261A1 Device for the recovery of sludges in a circular settling fit |
| 08/22/1979 | EP0003499A1 Process for the manufacture of water-soluble condensation products, their use in papermaking and process-aids containing these condensation products |
| 08/21/1979 | US4165283 Multi-stage purification system |
| 08/21/1979 | CA1060807A1 Liquid decanting and recycling machine |
| 08/14/1979 | US4164612 Aqeuous solution polymerization of vinyl quaternary ammonium or amine salt monomer in presence of powdery salt dispersion |
| 08/14/1979 | US4164470 Sewage treatment |
| 08/14/1979 | US4164413 Method for promoting growth of plants with cationic polymers |
| 08/14/1979 | CA1060589A1 Treatment of solids-liquid-gas mixtures |
| 08/14/1979 | CA1060369A1 Coal liquefaction |
| 08/08/1979 | EP0003327A2 Process for the chemical-mechanical treatment and/or purification of ground, surface or waste waters |
| 08/07/1979 | US4163719 Hydrocyclone separator arrangement |
| 07/25/1979 | EP0003146A2 A device for treating waste water by gravitational segregation |