| Patents for B01D 21 - Separation of suspended solid particles from liquids by sedimentation (18,338) |
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| 03/08/1999 | CA2212252A1 Automated solid and liquid waste separation by gravity solvent |
| 03/04/1999 | WO1999010287A1 Treatment plant with self-supporting modular structure |
| 03/04/1999 | WO1999010071A1 Method and plant for treating water incorporating a sedimentation tank and an multilayer filter operating at high speeds |
| 03/04/1999 | WO1999010070A1 Improved helical separator |
| 03/04/1999 | WO1999010068A1 A process and composition for removing fine solid particles from non-aqueous drilling mud |
| 03/04/1999 | DE19737975A1 Waste water treatment flocculation sludge settling tank for sludge removal |
| 03/04/1999 | DE19737974A1 Waste water flocculation |
| 03/04/1999 | DE19737973A1 Waste water flocculation settlement tank |
| 03/04/1999 | CA2294111A1 Method and plant for treating water incorporating a sedimentation tank and an multilayer filter operating at high speeds |
| 03/02/1999 | US5876622 Fluid, formulation and method for dust control and dewatering of particulate materials |
| 03/02/1999 | US5876598 Water purification decant assembly |
| 03/02/1999 | CA2118847C Method and apparatus for decanting liquid |
| 02/25/1999 | WO1999009263A1 Apparatus for the treatment of rain water |
| 02/25/1999 | DE19737448A1 Sedimentation trap |
| 02/24/1999 | EP0897395A1 POLYMERS CONTAINING $g(b)-HYDROXY ALKYL VINYL AMINE UNITS, PROCESS FOR THEIR PRODUCTION AND THEIR USE |
| 02/23/1999 | US5874003 Continuous biotreatment, equalization, clarification performed within single tank; simplification, efficiency |
| 02/23/1999 | US5874002 Enhanced oxygenation of sewage within multicompartment tank in which an inverted frustopyrimidal hopper defines aeration zones external to hopper and clarification zone internal to hopper whereby supplied air is compressed by incoming sewage |
| 02/23/1999 | US5873810 Centrifuge apparatus with container locking means |
| 02/19/1999 | CA2211935A1 Apparatus for the treatment of potable water |
| 02/18/1999 | WO1999007456A1 Flowmeter system useable with water treatment device |
| 02/17/1999 | EP0896966A1 Associative polymers and process for their preparation by reverse emulsion |
| 02/17/1999 | EP0811017B1 Cellulose particles, method for producing them and their use |
| 02/17/1999 | CN1208367A A centrifuge apparatus |
| 02/16/1999 | CA2086487C Cationic polyamines useful as drainage aids and stabilizers for rosin-based sizing agents |
| 02/16/1999 | CA2061416C Method and apparatus for clarifying liquid using a pulsating sludge bed and part of concentrated sludge |
| 02/14/1999 | CA2243535A1 Novel associative polymer and process for their preparation by inverse emulsion polymerization |
| 02/11/1999 | WO1999006891A1 Flow control system |
| 02/11/1999 | DE19836240A1 On-site process to de-toxify a layer of soil in the vicinity of water-bearing soil layers |
| 02/11/1999 | DE19820840A1 New water treatment process |
| 02/10/1999 | CN1207720A Flotation apparatus and process |
| 02/09/1999 | US5868928 Microbial sampler and concentrator |
| 02/09/1999 | US5868255 Alternating current magnetic separator |
| 02/09/1999 | US5868172 Flow augmenting device for a wastewater treatment plant |
| 02/04/1999 | WO1999005392A1 Method and apparatus for removing oil from oil-contaminated particulate material as e.g. waste drilling mud |
| 02/02/1999 | US5866019 Method for backwashing filters in a water treatment plant with clarifier and peripheral filter cells |
| 01/28/1999 | WO1999003592A1 Fluid conditioning system and method |
| 01/28/1999 | WO1999003558A1 Process for the selection of particles of a preselected size from a particulate pharmaceutical product |
| 01/28/1999 | WO1999003557A1 Blood processing systems and methods which optically derive the volume of platelets contained in a plasma constituent |
| 01/28/1999 | DE19747882C1 Assembly to remove heavy non-biodegradable sediment from enclosed water treatment |
| 01/28/1999 | DE19732034A1 Retro-fit modernisation process for small-scale sewage treatment plant |
| 01/28/1999 | DE19731264A1 Float-control switch-operated pump for waste water treatment basin |
| 01/28/1999 | CA2295521A1 Fluid conditioning system and method |
| 01/27/1999 | CN2305401Y Integrated high turbidity continuous water purifier |
| 01/26/1999 | US5863982 Water-in-oil emulsion with droplet size of about 200 to about 4000 |
| 01/26/1999 | US5863456 Aqueous dust suppression fluid consisting essentially by weight of about 12% sodium dodecylbenzenesulfonate and linear alcohol |
| 01/26/1999 | US5863443 In-line agricultural water filter with diverter tube and flush valve |
| 01/26/1999 | US5863441 Three zone dissolved air flotation clarifier with improved efficiency |
| 01/21/1999 | WO1999002770A1 Use of cationic polyelectrolytes and surfactants in the deinking of wastepaper |
| 01/21/1999 | WO1999002237A1 Method and device for separating materials and guiding device therefor |
| 01/21/1999 | DE19730246A1 Separator treating cutting emulsions from machine tools |
| 01/21/1999 | CA2295692A1 Method and device for separating materials and guiding device therefor |
| 01/20/1999 | EP0891380A1 Method of making polymers containing hydroxamate functional groups |
| 01/20/1999 | EP0863784A4 Extended dwell reverse hydrocyclone cleaner |
| 01/20/1999 | CN2304457Y Granule separator |
| 01/19/1999 | US5861100 Activated sludge process |
| 01/19/1999 | US5860767 High-vacuum groundwater and soil remediation system and related method and apparatus |
| 01/14/1999 | WO1999001225A1 Systems and methods for harvesting mononuclear cells by recirculation of packed red blood cells |
| 01/14/1999 | WO1999001198A1 Blood processing chamber counter-balanced with blood-free liquid |
| 01/14/1999 | WO1999001197A1 Systems and methods for collecting diluted mononuclear cells |
| 01/14/1999 | DE19830364A1 Water treatment basin |
| 01/14/1999 | DE19830311A1 Waste water treatment settlement circular basin |
| 01/14/1999 | DE19729802A1 Verfahren und Vorrichtung zum Trennen von Stoffen und Leiteinrichtung hierfür Method and device for separating and fin materials for this purpose |
| 01/14/1999 | CA2294395A1 Systems and methods for collecting diluted mononuclear cells |
| 01/14/1999 | CA2294307A1 Blood processing chamber counter-balanced with blood-free liquid |
| 01/14/1999 | CA2293298A1 Systems and methods for harvesting mononuclear cells by recirculation of packed red blood cells |
| 01/13/1999 | EP0890383A1 Device for drawing off clarified waste water from circular tanks |
| 01/13/1999 | EP0890382A1 Device to feed waste water to be purified into circular tanks |
| 01/13/1999 | EP0775005A4 Blood processing systems controlled by apparent hematocrit |
| 01/12/1999 | US5858252 Vessel with one or more quiescent chambers in which water, condensates, liquid contaminants, and particulates settle out from the fuel. |
| 01/12/1999 | US5858247 Liquefaction of hydrocarbon based sludge using a combination of a salt of dodecylbenzenesulfonic acid and polyalkylene glycols; circulation of sludge |
| 01/12/1999 | US5858237 Hydrocyclone for separating immiscible fluids and removing suspended solids |
| 01/07/1999 | WO1999000544A1 System and process for in tank treatment of crude oil sludges |
| 01/07/1999 | WO1999000170A1 Portable water recycler |
| 01/07/1999 | EP0888246A1 Flotation apparatus and process |
| 01/07/1999 | EP0888177A1 Method of carrying out a treatment in the presence of a centrifugal force and an apparatus therefor |
| 01/07/1999 | EP0703816B1 Circular settlement rank with scraper |
| 01/07/1999 | DE19727984A1 Conveyor belt assembly comprises plastic mesh to scrape sludge from bottom |
| 01/07/1999 | CA2295723A1 System and process for in tank treatment of crude oil sludges |
| 01/07/1999 | CA2210385A1 Use of cationic polyelectrolytes and surfactants in the deinking of wastepaper |
| 01/06/1999 | CN2302838Y Adjustable, shaft-free and spiral type apparatus for separating sand from water |
| 01/06/1999 | CN1204304A Single-tank sewage treatment plant |
| 01/06/1999 | CN1041538C Method for treating pickle waste liquor |
| 01/05/1999 | US5855793 Method of treating waste water to remove harmful ion by coagulating sedimentation |
| 01/05/1999 | US5855785 Three-phase separator for a fluidized bed apparatus |
| 01/05/1999 | US5855776 Precipitation apparatus and method |
| 12/30/1998 | WO1998058724A1 A valve assembly of a reverse osmosis water purification system |
| 12/30/1998 | WO1998058723A1 Methods and apparatus for sludge collection |
| 12/30/1998 | EP0886625A1 Flocculant compositions and water treatment method using the same |
| 12/30/1998 | EP0794823A4 Centrifuge reagent delivery system |
| 12/30/1998 | EP0737089A4 Launder cover for use in a clarifier tank |
| 12/29/1998 | US5853677 Concentration of solids by flocculating in the Bayer process |
| 12/29/1998 | US5853597 Method of and apparatus for discharging sedimentary solid particles |
| 12/29/1998 | US5853586 Thin pliable polymeric film for sealing microplates |
| 12/29/1998 | CA2048047C Succinoglycane composition |
| 12/24/1998 | DE19823490A1 Waste water collection and disposal system for use in light-density especially rural settlement |
| 12/23/1998 | EP0885040A1 Concentrator for solids in a liquid medium |
| 12/23/1998 | EP0851784A4 Blood processing systems and methods for collecting mono nuclear cells |
| 12/23/1998 | EP0607236B1 Processing waste washout liquid containing photopolymer from printing plate manufacture |
| 12/22/1998 | US5851397 Auxiliary apparatus for sampling blood serum |
| 12/22/1998 | US5851386 Waste-oil cleaning apparatus |