| Patents for B01D 21 - Separation of suspended solid particles from liquids by sedimentation (18,338) |
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| 01/25/2000 | US6017462 Providing a sink liner apparatus having a sedimentation basin that separates plaster from waste water and contains the plaster within the sedimentation basin for later disposal |
| 01/25/2000 | US6017400 Submurging a vehicle such that in comes to rest on the underwater floor, directing the vehicle to travel the underwater floor, selectively suctioning sediment particles from the floor while leaving sand and gravel in place |
| 01/25/2000 | US6016924 Apparatus for cleaning water treatment tank surfaces |
| 01/25/2000 | CA2160465C Process and apparatus for the treatment of waste water |
| 01/24/2000 | CA2243580A1 Apparatus and process for removing fine metallic particles from effluent liquid waste |
| 01/19/2000 | EP0972749A2 Method and device for processing waste water containing fluoride |
| 01/19/2000 | EP0971856A1 Three zone dissolved air flotation clarifier with improved efficiency |
| 01/19/2000 | EP0971780A1 Separator |
| 01/13/2000 | WO2000001519A1 Method for the separation, regeneration and reuse of an exhausted glycol-based slurry |
| 01/13/2000 | DE19846358A1 Environmentally acceptable dewatering of open water sediments for agricultural use and construction |
| 01/12/2000 | EP0970275A1 Method for preparing alkaline solutions containing aromatic polymers |
| 01/12/2000 | CN2358043Y Purification can of sewage purifier for fibre sewage mine |
| 01/12/2000 | CN2357796Y Side delivery co-current flow tilted-plate settling basion |
| 01/12/2000 | CN2357795Y Separation equipment for paper-making white water |
| 01/12/2000 | CN1048190C Aqueous suspension of minerals and/or fillers and/or pigments, and its preparing method |
| 01/12/2000 | CN1048186C Backwash deposited water recovering installation for siphon filter tank of waterworks |
| 01/11/2000 | US6013178 Water filter and water filter assembly for robotic underwater swimming pool cleaning machines |
| 01/11/2000 | US6013174 Process to remove ash-forming contaminants from used oil |
| 01/11/2000 | CA2155811C Apparatus for the removal of floating sludge in dissolved air floatation basins at water purification and waste water treatment plants |
| 01/05/2000 | EP0968801A1 A method for separating and regenerating polyethylene glycol and silicon carbide abrasive material to enable re-use thereof |
| 01/05/2000 | EP0968747A1 Clarifier flange cover (crown stone) for scraper track with integrated overhead heating means |
| 01/05/2000 | EP0968258A1 Method and device for purifying contaminated liquids |
| 01/05/2000 | EP0775165B1 Dadmac/vinyl trialkoxysilane copolymers and their use in wastewater treatment |
| 01/05/2000 | DE19828312C1 System to control the temperature of sewage flowing into a basin |
| 01/05/2000 | CN2356999Y Materialization pot |
| 01/05/2000 | CN2356729Y Dirt scraping device for rotary grille dirt cleaner |
| 01/05/2000 | CN2356728Y Water collecting device for realizing water treatment by same direction flow inclined plate box precipitation process |
| 01/04/2000 | US6010631 Method and installation for treating an untreated flow by simple sedimentation after ballasting with fine sand |
| 01/04/2000 | US6009892 Device for disposal of liquid media |
| 12/29/1999 | WO1999067006A1 Coagulation reaction device |
| 12/29/1999 | EP0696259B1 Apparatus for the treatment of waste water |
| 12/29/1999 | EP0656874B1 Immiscible liquids separator apparatus and method |
| 12/28/1999 | US6007725 Separation device, inlet path to convey whole blood from an individual donor into separation device for separation into red blood cells and plasma, anticoagulant including a citrate, return path to convey plasma constituent to donor |
| 12/28/1999 | CA2005680C High performance polymer flocculating agents |
| 12/22/1999 | EP0965374A1 Coagulation precipitator |
| 12/22/1999 | EP0964755A1 Method and device for processing material |
| 12/22/1999 | EP0964734A1 Device for separating floating layers in a liquid basin |
| 12/22/1999 | CN2354628Y Pillar rounding strickle for movable suction dredge |
| 12/22/1999 | CN2354627Y Static depositing tank |
| 12/22/1999 | CN1047577C Method for preparing ferrous system of polymerized water purifier |
| 12/21/1999 | US6004467 Process for the treatment of an aqueous suspension comprising kaolin |
| 12/21/1999 | US6004459 Metal particle removal and retention apparatus |
| 12/21/1999 | CA2161314C Water treatment system |
| 12/15/1999 | EP0888177B1 Method of carrying out a treatment in the presence of a centrifugal force and an apparatus therefor |
| 12/15/1999 | EP0785910B1 Apparatus and process for fluid treatment |
| 12/15/1999 | CN2353432Y Blocked-free high-speed automatic mud-water separator |
| 12/14/1999 | US6001266 Applying a variable electric field to the liquid to bias the brownian motion of particles, different viscosities of particles causes motion of particles to respond differntly to varying voltage and accumulate in differnt regions of liquid |
| 12/14/1999 | US6001265 Recovery of coolant and abrasive grains used in slicing semiconductor wafers |
| 12/09/1999 | WO1999062831A1 Hydrogen sulfide removal methods and apparatus |
| 12/09/1999 | WO1999062617A1 Method for vibrational cleaning a liquid of foreign particles |
| 12/09/1999 | DE4437330C2 Einlaufsystem für runde Nachklärbecken Inlet system for circular secondary clarifiers |
| 12/09/1999 | CA2334262A1 Hydrogen sulfide removal methods and apparatus |
| 12/08/1999 | EP0961826A2 Purification and/or concentration of dna by cross-flow filtration, separation of endotoxins from a nucleic acid preparation |
| 12/08/1999 | EP0961759A1 Method for the physico-chemical treatment of effluents in particular surface water for consumption |
| 12/08/1999 | EP0961758A1 Method for the physico-chemical treatment of effluents, in particular of surface water for consumption |
| 12/08/1999 | EP0880547A4 Pectin fibers |
| 12/08/1999 | CN2352235Y Equipment for separating water from dregs |
| 12/08/1999 | CN2352234Y Closed and sand removing type horizontal three phase separation equipment |
| 12/07/1999 | US5998632 With diallyldimethylammonium chloride |
| 12/07/1999 | US5997753 Method for settling of suspensions with use of seepage force and vibrations |
| 12/07/1999 | US5997740 Lifting mechanism assembly for a rotary drive assembly |
| 12/07/1999 | CA2228072C Method for settling of suspensions with use of seepage force and vibrations |
| 12/07/1999 | CA2184511C Apparatus and method for separating components in well fluids |
| 12/02/1999 | WO1999061377A1 Method for treatment of aqueous streams comprising biosolids |
| 12/02/1999 | WO1999061129A1 Dextran starch and flocculant combination for improving red mud clarification |
| 12/02/1999 | DE19824350A1 Separating device for feed channel of apparatus removing solids from fluids such as water |
| 12/01/1999 | EP0960660A1 Process for filling a disposal site for silt supplied with a high water content and device for applying drainage wicks |
| 12/01/1999 | CN1236782A Method of making and using high molecular weight acrylamide polymers |
| 11/30/1999 | US5993752 Device for dissolving a coagulant |
| 11/30/1999 | US5993370 Enhanced yield collection systems and methods for obtaining concentrated platelets from platelet-rich plasma |
| 11/30/1999 | US5992644 Plastic flight type water treatment system for rectangular clarifiers |
| 11/30/1999 | CA2229970C Jet pump treatment of heavy oil production sand |
| 11/25/1999 | WO1999060209A1 Polymer composition for improved retention, drainage and formation in papermaking |
| 11/25/1999 | DE19822289A1 Process to remove sludge from water treatment basin |
| 11/25/1999 | DE19812166C1 Actuating mechanism for a broaching tool |
| 11/24/1999 | EP0958849A1 Lamellar clarifier and clarifier lamellae washing device |
| 11/24/1999 | EP0958248A1 Process for the preparation of water purification solutions containing ferric iron and the use of the product as of obtained |
| 11/24/1999 | EP0958246A2 Two-component agent for water-treatment in aquariums for tropical fish |
| 11/24/1999 | EP0958024A1 Improvements to an apparatus for thickening a solid-liquid suspension |
| 11/24/1999 | EP0958023A1 Apparatus for screening |
| 11/24/1999 | EP0958022A1 Apparatus for separation |
| 11/24/1999 | EP0958021A1 Separator with solids diverter |
| 11/24/1999 | EP0873371B1 Method of producing water-soluble condensates and addition products containing amino groups, and use of said condensates and addition products |
| 11/23/1999 | US5989415 Oil seperator |
| 11/18/1999 | WO1999058456A1 Coagulator |
| 11/18/1999 | WO1999058455A1 Oil separator |
| 11/18/1999 | WO1999058221A1 Three-phase rotary separator |
| 11/18/1999 | WO1999058220A1 Three-phase rotary separator |
| 11/18/1999 | DE19821537A1 Container for dewatering and disposal of municipal refuse |
| 11/18/1999 | CA2329039A1 Three-phase rotary separator |
| 11/17/1999 | EP0956086A1 Cell separation device and in-line orifice mixer system |
| 11/17/1999 | EP0775008B1 Blood processing device which restricts in flow of whole blood to increase platelet yields |
| 11/17/1999 | CN1235142A Process for preparation of hydrocarbons from synthesis gas |
| 11/16/1999 | US5986030 Cationic polymers from acrylic derivative monomers and copolymers |
| 11/16/1999 | US5985154 Adding water soluble cationic polymer, nonionic and anionic surfactants, and silicate compound to paint spray booth to detackify and disperse solventborne paints and to reduce floatation of detackified paints |
| 11/16/1999 | US5985150 Process for the aerobic biological purification of water |
| 11/16/1999 | US5985037 Mixing colloidal silica sol with nondialyzable polyvinylpyrrolidone coating and sugar to dissolve, transferring to centrifuge tube, applying centrifugal force to form linear gradient |
| 11/16/1999 | US5983910 Method and apparatus for recycling coolant for a cutting machine |
| 11/16/1999 | CA2190097C Stripping/extraction settler apparatus and method |
| 11/11/1999 | DE19818539A1 Rectangular sludge sedimentation tank for waste water treatment plant |