| Patents for B01D 21 - Separation of suspended solid particles from liquids by sedimentation (18,338) |
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| 05/08/1990 | US4923629 Method and flocculant for water treatment |
| 05/08/1990 | CA1268698A1 Green-house curtain |
| 05/03/1990 | WO1990004444A1 Multiplex gas phase precipitation tank |
| 05/03/1990 | WO1990001982A3 Device for removing bottom sludge and/or floating sludge from circular settling basins |
| 05/02/1990 | EP0366429A2 Improvements in apparatus and process to separate and remove extraneous matter from a liquid stream |
| 05/02/1990 | EP0366388A1 Method for producing aqueous solutions of basic poly aluminum sulphate |
| 05/02/1990 | EP0366334A1 Improvements in or relating to the recovery of silver |
| 05/01/1990 | US4921609 Circular lamella clarifier |
| 05/01/1990 | US4921602 Filter for liquids |
| 04/25/1990 | EP0364453A1 Method and apparatus for purification of liquid mediums, especially waste water. |
| 04/24/1990 | US4919826 Process and apparatus for separating solids and liquids from an effluent stream |
| 04/24/1990 | US4919812 Clarifier assembly |
| 04/24/1990 | US4919807 Ultrasonic vibrator tray apparatus |
| 04/24/1990 | US4919691 Paint detackification using an improved oil-in-water emulsion with dibasic ester |
| 04/24/1990 | CA2001216A1 Apparatus and process to separate and remove extraneous matter from a liquid stream |
| 04/19/1990 | WO1990003834A1 Method and apparatus for automatic processing and analyzing of blood serum |
| 04/19/1990 | DE3928681A1 Storm sewage screen - with perforated alloy steel plate in zigzag folds or corrugations |
| 04/18/1990 | CN2056087U Series inclined-tube reflection sedimentation tank |
| 04/17/1990 | US4917935 Ceramic packing |
| 04/17/1990 | US4917801 Lymphocyte collection tube |
| 04/17/1990 | US4917782 Electrolytic liquid purification process and apparatus |
| 04/17/1990 | CA1267770A1 Process and apparatus for the purification of contaminated sulfur |
| 04/11/1990 | EP0363120A2 Centrifugal fluid processing system and method |
| 04/11/1990 | EP0363050A1 Separator |
| 04/11/1990 | EP0363049A1 Separator |
| 04/11/1990 | EP0362769A1 Mixed hydrophobe polymers |
| 04/11/1990 | EP0362233A1 Process for separating the substances contained in a liquid and device for implementing the process |
| 04/10/1990 | CA1267745A1 Stable tannin based polymer compound |
| 04/06/1990 | CA2000240A1 Method and apparatus for automatic processing and analyzing of blood serum |
| 04/05/1990 | WO1990003213A1 Clarifier assembly |
| 04/05/1990 | DE3904998C1 Floatation apparatus |
| 04/04/1990 | EP0122270B1 Separation of multi-phase systems |
| 04/03/1990 | US4913819 Liquid jet solids removal system for process vessels |
| 04/03/1990 | US4913585 Method of treating solids containing waste fluid |
| 03/29/1990 | DE3835553C1 Method for automatic emptying and highly selective isolation of different fluids via the head space of a vessel in which the fluids are present in layered formation and apparatus for carrying out the method and for cleaning the vessel |
| 03/28/1990 | CN1040774A Polychlorinated ferric sulfate water purifying agent and its manufacturing method |
| 03/27/1990 | US4911833 Closed hemapheresis system and method |
| 03/21/1990 | CN1040566A Method of preparation of composite coagulating agent |
| 03/14/1990 | CN2054366U Treating tower for sludge |
| 03/13/1990 | US4908139 Method and apparatus for separating and recovering particulate material |
| 03/12/1990 | EP0355109A4 System and method for the extraction of cyanide from tails liquor. |
| 03/12/1990 | EP0301077A4 Plasma collection set and method. |
| 03/12/1990 | EP0299054A4 Centrifugation pheresis system. |
| 03/08/1990 | WO1990001982A2 Device for removing bottom sludge and/or floating sludge from circular settling basins |
| 03/08/1990 | DE3927881A1 Clarifier used for cleaning waste water - contains inlet chamber, sepn. chamber, sedimentation chamber including plate and collector channels for clarified water |
| 03/08/1990 | DE3827716A1 Water treatment in a plant for intensive fish culture |
| 03/07/1990 | EP0356605A1 Metal precipitation and neutralisation apparatus for metal pickles containing several metals |
| 02/28/1990 | EP0355327A2 Grease separator |
| 02/28/1990 | EP0355109A1 System and method for the extraction of cyanide from tails liquor |
| 02/28/1990 | CN1039973A High-molecular organic flocculant containing aluminium and magnesium and its prescription |
| 02/27/1990 | US4904772 Mixed hydrophobe polymers |
| 02/27/1990 | US4903899 Separator |
| 02/22/1990 | DE3827914A1 Suction cleaner for circular sedimentation basins (clarifiers) |
| 02/22/1990 | DE3827717A1 De-sludger |
| 02/22/1990 | DE3823664C1 Separating device for sewage |
| 02/20/1990 | US4902779 Waste water treatment |
| 02/20/1990 | CA1266008A1 Semipermeable baffle fuel filter |
| 02/14/1990 | EP0354744A2 Clarification apparatus |
| 02/13/1990 | US4900438 Pump mounting for a filtration system |
| 02/07/1990 | EP0353314A1 Process and installation for the purification of waste water containing emulsified fat, and discharging device |
| 02/06/1990 | US4898678 Multicompartment tanks for deleading purification; dual water flow |
| 02/06/1990 | US4898671 Filtering device for the separation of liquids and solids |
| 02/06/1990 | US4898667 Point-of-use membrane filtration system |
| 02/06/1990 | CA1265453A1 Lamella gravity separator |
| 01/30/1990 | US4897206 Bidirectionally corrugated plate separator for fluid mixtures |
| 01/30/1990 | US4897205 Method for treating waste material |
| 01/30/1990 | US4897187 Portable water filtration apparatus |
| 01/30/1990 | CA1265267A1 Fluid clarifying assembly |
| 01/30/1990 | CA1265266A1 Method and apparatus for biological aerobic wastewater treatment |
| 01/25/1990 | DE3824220A1 Arrangement for sucking off sludge deposits, in particular for cleaning aquaria |
| 01/24/1990 | EP0351682A2 Clarification device |
| 01/24/1990 | CN1039007A Improved apparatus for thickening by flotation of sluries produced during treatment of waters |
| 01/23/1990 | US4895665 Method for treating and reclaiming oil and gas well working fluids and drilling pits |
| 01/23/1990 | US4895652 Cross-flow separator |
| 01/23/1990 | US4895582 Vortex chamber separator |
| 01/17/1990 | EP0350851A1 Method and apparatus for separating mononuclear cells from blood |
| 01/17/1990 | EP0350579A1 Light liquids separator |
| 01/16/1990 | US4894170 Tanks for separating solids |
| 01/16/1990 | US4894146 Thin channel split flow process and apparatus for particle fractionation |
| 01/11/1990 | WO1990000080A1 Process for dewatering sludge |
| 01/10/1990 | EP0350174A2 Treatment of aqueous dispersions |
| 01/10/1990 | EP0069119B1 Fluid recovery system |
| 01/10/1990 | CN1006362B Plate groups of layer-plate type separator |
| 01/09/1990 | US4892714 Recrystallization apparatus |
| 01/03/1990 | EP0348682A1 Liquid separator |
| 01/02/1990 | US4891422 Compositions of inorganic-organic alloy with high nitrogen content polymers and their manufacture |
| 01/02/1990 | US4891140 Energy efficient |
| 01/02/1990 | US4891128 Solids excluding surface skimmer |
| 12/28/1989 | WO1989012492A1 Apparatus and methods for liquid treatment |
| 12/28/1989 | DE3821530A1 Suction cleaner having a plurality of suction cleaning systems |
| 12/27/1989 | EP0348004A2 Method of refining glyceride oils |
| 12/27/1989 | EP0347595A1 Process for running a waste water plant |
| 12/27/1989 | EP0347464A1 Device for separation of ferromagnetic materials from fluid media |
| 12/26/1989 | US4889743 Method for continuous tartar separation |
| 12/26/1989 | US4889624 Lamella gravity separator |
| 12/21/1989 | DE3820142A1 Fresh fat separator |
| 12/14/1989 | DE3818383A1 Take-off device for sinking layers from liquid substrate vessels |
| 12/13/1989 | CN1037884A Method for processing industrial waste liquors with magnesium sulfate-lime cream coagulating deposition |
| 12/07/1989 | DE3818624A1 Clarifying thickener, and process operating therewith |
| 12/07/1989 | DE3818579A1 Separator for floating and/or suspended matter |