| Patents for B01D 21 - Separation of suspended solid particles from liquids by sedimentation (18,338) |
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| 06/13/1989 | US4839039 Automatic flow-control device |
| 06/13/1989 | CA1255820A1 Apparatus for purifying water, comprising an upflow reactor with an influent distributing system to be connected to a central water supply system |
| 06/08/1989 | DE3739896A1 Appliance for treating industrial effluents or of leachate from tips |
| 06/08/1989 | DE3739687A1 Method for detecting small amounts of separable, light liquid pollutants contained in effluent, and appliance therefor |
| 06/07/1989 | EP0319322A1 Reducing the quantity of polyhalogenated aromatic hydrocarbons in inert organic solvents |
| 06/07/1989 | EP0212202B1 Ceramic body and method and mould for its manufacture |
| 06/07/1989 | CN1033245A Apparatus for continuous elevation of dykes |
| 06/06/1989 | US4837313 Polygalactosamine PF-192 and salts thereof |
| 06/06/1989 | US4836932 Water treatment using fine particle super magnets |
| 05/31/1989 | EP0318432A2 Waste water treatment plant |
| 05/31/1989 | EP0317740A2 Electrostatic cleaning apparatus for non-conducting fluids |
| 05/31/1989 | CN1033176A Process of treatment of para-benzene dicarbonic acid in waste water with ferric salt. |
| 05/30/1989 | US4834890 Centrifugation pheresis system |
| 05/30/1989 | US4834887 In-line coaxial centrifugal separator with helical vane |
| 05/30/1989 | CA1255016A1 Flocculants and processes for their preparation |
| 05/24/1989 | EP0316997A2 System and method for monitoring and/or controlling liquidsolid separation processes |
| 05/24/1989 | EP0316357A1 Calcium hypochlorite compositions |
| 05/24/1989 | EP0316348A1 Method for the treatment of sewage and other impure water |
| 05/23/1989 | US4832854 Apparatus and process to separate and remove extraneous matter from a liquid stream |
| 05/23/1989 | US4832709 Filters |
| 05/18/1989 | WO1989004152A1 Separator |
| 05/18/1989 | DE3821521A1 Clarifying tank |
| 05/17/1989 | EP0316201A1 Method and apparatus for separating and recovering particulate material |
| 05/16/1989 | US4830748 Apparatus for cleaning algae and debris from a water treatment tank |
| 05/16/1989 | US4830507 Method of and apparatus for thickening red muds derived from bauxite and similar slurries |
| 05/10/1989 | EP0314855A2 Polymers containing hydroxamic acid groups for reduction of suspended solids in bayer process streams |
| 05/09/1989 | US4828714 Centrifuging, drying in vibrating fluidized-bed dryer, low dust content |
| 05/09/1989 | US4828693 Water pressure regulator for hemodialysis apparatus |
| 04/27/1989 | DE3812781C1 Apparatus for the secondary clarification of municipal or industrial waste waters by mixed algal cultures |
| 04/26/1989 | CN1004027B Condensate separator and discharging device |
| 04/20/1989 | WO1989003243A1 Manipulating means |
| 04/20/1989 | DE3734019A1 Method and appliance for thickening liquids containing solids |
| 04/20/1989 | DE3733761A1 Method and device for indicating precipitated layers in separators |
| 04/19/1989 | EP0311763A2 Sedimentation tank for water and waste water purification |
| 04/19/1989 | CN1032432A Improved fluidized bed process and apparatus |
| 04/18/1989 | US4822495 Centrifuging |
| 04/12/1989 | EP0311220A2 Improvements in or relating to the treatment of multi-phase systems |
| 04/12/1989 | EP0311216A1 Improved fluidized bed process and apparatus |
| 04/12/1989 | EP0310809A1 Process for continuously desludging salt baths |
| 04/12/1989 | EP0310742A2 Device of drainage |
| 04/12/1989 | CN2035651U Integral high-efficient precipitation and concentration device |
| 04/12/1989 | CN1032300A Flocculent for purifying waste liquor of print and dye |
| 04/11/1989 | US4820424 Water erodable shapes containing soluble particles of multivalent metal coagulant and polymeric flocculant |
| 04/11/1989 | US4819552 For removing tartar from wine or grape juice |
| 04/06/1989 | WO1989002775A1 Device for settling tanks and method of discharge |
| 04/04/1989 | US4818419 Method of removing clogging material from a clogged granular filter medium |
| 04/04/1989 | US4818392 Liquid waste treatment system |
| 03/30/1989 | DE3831421A1 Composition for the treatment of paint-containing effluent, and process for the preparation thereof |
| 03/29/1989 | EP0309215A1 Water pressure regulator for hemodialysis apparatus |
| 03/28/1989 | US4816225 Dropping pieces directly into heated liquid sulfur |
| 03/28/1989 | US4816166 Flocculation of coal particles and coal slimes |
| 03/28/1989 | US4816157 Hydraulic sweep clarifier |
| 03/21/1989 | US4814282 Centrifuge for two-dimensional centrifugation |
| 03/16/1989 | DE3736504C1 Method and appliance for flocculating suspensions to be separated in solid-liquid separation machines and apparatuses |
| 03/14/1989 | CA1251293A1 Polymer feed system |
| 03/14/1989 | CA1251147A1 Separation of components of a fluid mixture |
| 03/08/1989 | EP0305510A1 System for centrifugation and for classification of particulate materials |
| 03/08/1989 | CN1003507B Red mud separating technique in process of aluminum oxide preparation |
| 03/07/1989 | US4810393 Heating, centrifuging, filtration |
| 03/07/1989 | US4810383 Water treatment system for rectangular clarifiers |
| 03/07/1989 | US4810294 Ion exchange with soluble fluoride |
| 03/01/1989 | CN2033286U 污水过滤器 Water filter |
| 03/01/1989 | CN2033285U Gas floating pool with high efficiency separation, concentration and autodischarge devices |
| 02/28/1989 | US4808304 Apparatus for the dewatering of phosphate slimes |
| 02/23/1989 | WO1989001456A1 Method for improving the utilization of polyelectrolytes in dewatering aqueous suspensions |
| 02/23/1989 | WO1989001357A1 Clarification process |
| 02/22/1989 | CN2032906U Horizontal guide mud different direct flow sedimenting plank |
| 02/21/1989 | US4806252 Centrifuging, sealing; lightweight, portable |
| 02/16/1989 | DE3726394A1 Device for aspiration of aerosol |
| 02/16/1989 | DE3726150A1 Apparatus for simultaneously producing volume flows of different magnitudes in rectangular tanks |
| 02/16/1989 | DE3725943A1 Reactor vessel |
| 02/15/1989 | CN2032493U Inclined pipe with non-deformation |
| 02/09/1989 | DE3725070A1 Sludge vessel |
| 02/07/1989 | US4802592 Floating liquid skimmers having a floating weir |
| 02/01/1989 | EP0301847A1 Cleaning using cyclodextrin |
| 02/01/1989 | EP0301452A1 Method for treating waste water from flue gas purifying plants |
| 02/01/1989 | EP0301447A2 Polymers of alkoxylated unsaturated quaternary ammonium salts, their preparation and their use |
| 02/01/1989 | EP0301077A1 Plasma collection set and method. |
| 01/31/1989 | US4801310 Tangential pulses, laminar bottom flow |
| 01/31/1989 | CA1249526A1 Grit trap for the use in removing grit from a flow of sewage |
| 01/24/1989 | US4800039 Synergistic aluminum chlorohydrate and watersoluble polyamine or cationic allyl polymer |
| 01/19/1989 | DE3710887A1 Assembly procedure for producing universal function vessels |
| 01/18/1989 | EP0299597A2 Method and apparatus for removing tartrates or like impurities |
| 01/18/1989 | EP0299054A1 Centrifugation pheresis system. |
| 01/17/1989 | US4798677 Filterator for separator |
| 01/17/1989 | CA1248733A1 Manufacture of basic aluminum chlorosulphates |
| 01/12/1989 | WO1989000150A1 Method and apparatus for purification of liquid mediums, especially waste water |
| 01/12/1989 | WO1989000071A1 Cell block collection method and apparatus |
| 01/04/1989 | CN2030107U Periphery transmission concentrator with peripheral oblique plates |
| 01/04/1989 | CN2030106U Gravity separator for solid oil and water |
| 01/04/1989 | CN1030023A New model of filtering chamber with floating filter medium |
| 01/03/1989 | US4795564 Ion exchanging |
| 12/27/1988 | US4793952 Gas pressure line for controlling interface between liquids |
| 12/27/1988 | US4793926 Lamellar decanter |
| 12/22/1988 | DE3719441A1 Method for breaking down aggregated organic and mineral constituents in suspensions, such as sludges and wastewaters, and apparatus for carrying out the method |
| 12/21/1988 | CN87103513A High efficiency washing tower with low bed layer for slurry and its application |
| 12/15/1988 | DE3816378A1 Tipping flush |
| 12/07/1988 | EP0294002A1 Clarified-liquid outlet device for settling tanks |
| 12/07/1988 | CN88102816A Hydraulic mixing fluccolation installation for controlling the energy consumption of turbulent flow |
| 12/06/1988 | CA1245990A1 Plate pack for a lamella separator |