| Patents for B01D 21 - Separation of suspended solid particles from liquids by sedimentation (18,338) |
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| 12/02/1997 | US5693214 Apparatus for and method of separation to water and colloidal particles by agglomeration |
| 11/30/1997 | CA2206393A1 Process for the preparation of retention and dewatering agents based on polyamino-ethers |
| 11/29/1997 | CA2177555A1 Separation of minerals |
| 11/26/1997 | EP0808646A1 Submerged raker for circular settling tanks |
| 11/26/1997 | EP0808203A1 Centrifuge with annular filter |
| 11/26/1997 | EP0682555B1 Process and apparatus for controlling the dewatering of suspensions |
| 11/26/1997 | CN2268726Y Water drainage with automatically floating soil resistant, water absorbing and bottomless valve |
| 11/25/1997 | USRE35668 Sludge collection apparatus and method |
| 11/25/1997 | US5690835 Systems and methods for on line collection of cellular blood components that assure donor comfort |
| 11/25/1997 | US5690818 Spray sludge suppression system |
| 11/25/1997 | US5690815 Automated system for processing biological fluid |
| 11/25/1997 | US5690811 Method for extracting oil from oil-contaminated soil |
| 11/20/1997 | WO1997043220A1 Clarification plant for water purification |
| 11/20/1997 | WO1997043027A1 Method and apparatus for controlling thickeners, clarifiers and settling tanks |
| 11/20/1997 | WO1997043026A1 Apparatus and method for manipulating particles in a liquid medium by ultrasonic waves |
| 11/20/1997 | DE19626851A1 Dynamic decanter for taking samples from a pipe |
| 11/20/1997 | DE19621156A1 Klärwerk zur Aufbereitung von Wasser Sewage treatment plant for treatment of water |
| 11/20/1997 | DE19621142A1 Sludge de-watering using computer-controlled process |
| 11/20/1997 | DE19621139A1 Water treatment settlement tank has plan-view rotating spiral scraper assembly |
| 11/20/1997 | CA2254896A1 Method and apparatus for controlling thickeners, clarifiers and settling tanks |
| 11/20/1997 | CA2253456A1 Clarification plant for water purification |
| 11/19/1997 | EP0689521A4 Compact clarifier system for municipal waste water treatment |
| 11/19/1997 | CN1165558A Composition for separating serum or plasma |
| 11/18/1997 | US5688923 Pectin fibers |
| 11/18/1997 | US5688405 Method and apparatus for separating particulate matter from a fluid |
| 11/18/1997 | US5688404 Phosphate recovery processes |
| 11/18/1997 | US5688377 Rotary radial cyclonic fluid mixture separator |
| 11/18/1997 | US5688076 High-vacuum groundwater and soil remediation system and related method and apparatus |
| 11/13/1997 | WO1997042229A1 POLYMERS CONTAINING β-HYDROXY ALKYL VINYL AMINE UNITS, PROCESS FOR THEIR PRODUCTION AND THEIR USE |
| 11/13/1997 | DE19715680A1 Waste water treatment plant |
| 11/13/1997 | DE19618176A1 Scum scraper for circular or rectangular sewage tanks has tilting tray collector |
| 11/13/1997 | DE19617983A1 ß-Hydroxyalkylvinylamin-Einheiten enthaltende Polymerisate, Verfahren zu ihrer Herstellung und ihre Verwendung containing ß-hydroxyalkylvinylamine units as polymers, processes for their preparation and their use |
| 11/13/1997 | DE19617528A1 Apparatus for controlling addition of flocculent to sludge |
| 11/12/1997 | EP0680604B1 Control of dewatering processes |
| 11/12/1997 | CN1164510A Process for preparation of basic polyaluminium chloro sulphates and applications thereof |
| 11/12/1997 | CN1036387C Method for producing water purifying agent |
| 11/11/1997 | US5686297 Enzyme and amine oxide surfactant |
| 11/11/1997 | US5686238 Improving the accuracy of diagnostic tests |
| 11/06/1997 | WO1997041075A1 Use of hydroxamated polymers to alter bayer process scale |
| 11/06/1997 | WO1997041067A1 Three zone dissolved air flotation clarifier with improved efficiency |
| 11/06/1997 | WO1997041064A1 Concentration of solids in the bayer process |
| 11/06/1997 | WO1997033831A3 Treatment of waste liquor in a vertical shaft bioreactor |
| 11/06/1997 | DE19616040A1 Solid bowl centrifuge for e.g. waste water, producing nearly dry filter cake |
| 11/05/1997 | EP0804956A1 Plastic flight type water treatment system for rectangular clarifiers |
| 11/05/1997 | EP0804955A1 Sedimentation basin |
| 11/05/1997 | EP0804267A1 Vented baffle system |
| 11/05/1997 | EP0628018B1 Method of separating oil from wash water |
| 11/05/1997 | EP0572656B1 Centrifuge with separable bowl and spool elements providing access to the separation chamber |
| 11/05/1997 | EP0417114B1 Separating constituents of a mixture of particles |
| 11/04/1997 | US5683576 Water ozonation treatment apparatus |
| 10/30/1997 | DE19715905A1 Closure mechanism for the overflow tube of a liquid separator |
| 10/29/1997 | EP0803274A1 Process and apparatus for treatment of backwash water from a filter |
| 10/29/1997 | EP0748248B1 Settlement tank |
| 10/29/1997 | CN1163639A Process for purifying tertiary aminoxide aqueous solution |
| 10/29/1997 | CN1163159A Block agglutinant |
| 10/29/1997 | CN1036243C Coagulating sedimentation processing apparatus |
| 10/28/1997 | US5681273 Systems and methods for predicting blood processing parameters |
| 10/28/1997 | CA2084129C Separation of solids from aqueous suspensions using modified amine functional polymers |
| 10/23/1997 | WO1997038944A1 Process for the preparation of water purification solutions containing ferric iron and the use of the product as of obtained |
| 10/23/1997 | WO1997022561A3 Single-tank sewage treatment plant |
| 10/23/1997 | CA2250133A1 Process for the preparation of water purification solutions containing ferric iron and the use of the product as of obtained |
| 10/22/1997 | EP0802165A1 Method of treating waste water to remove harmful ion by coagulating sedimentation |
| 10/21/1997 | US5679265 Method and device for the separation of a contaminated top layer |
| 10/21/1997 | US5679261 Using diallyldimethylammonium chloride cationic polymer having vinyl alkoxysilane component as coagulant |
| 10/16/1997 | DE19614612A1 Waste water and solids treatment process separates substances at single site |
| 10/16/1997 | DE19614383A1 Humic aluminium formed in flocculation waste water-treatment stage |
| 10/16/1997 | DE19612659C1 Process and assembly mix sludge with controlled quantity of ash cement |
| 10/15/1997 | EP0800849A1 Device for separation of dispersive liquid-liquid and liquid-solid systems |
| 10/14/1997 | US5676849 Method for enrichment of fetal cell population from maternal whole blood samples |
| 10/14/1997 | US5676841 Blood collection system; reduce citrate toxicity |
| 10/14/1997 | US5676840 Waste-oil cleaning method and apparatus |
| 10/14/1997 | US5676839 Floatable oil and debris collection device |
| 10/14/1997 | US5676834 Upflow clarifier |
| 10/14/1997 | US5676827 Apparatus for discharge of sediment from a tank |
| 10/09/1997 | WO1997036941A1 Method of making polymers containing hydroxamate functional groups |
| 10/09/1997 | DE19613349A1 Waste water aeration unit consoles secured to facing flat concrete walls |
| 10/08/1997 | EP0799631A1 Discharge regulator |
| 10/08/1997 | EP0799083A1 Method and device for purifying liquids, in particular polluted water for fighting fires |
| 10/07/1997 | US5674458 Container for receiving and separating a fluid into its ingredients |
| 10/02/1997 | WO1997035655A1 Water treatment system |
| 10/02/1997 | WO1997035654A1 Wastewater treatment system |
| 10/02/1997 | DE19612059A1 Cyclone separator for cleaning dirty liquids |
| 10/01/1997 | CN1160596A Cyclonic water-sealed tower and fume and mud eliminating technology |
| 09/30/1997 | CA2034225C Paint sludge separator system |
| 09/25/1997 | WO1997034704A1 Centrifugation support |
| 09/25/1997 | WO1997034677A1 Counter-flow liquid clarifier |
| 09/24/1997 | CN2262945Y Separator for separating ash from water |
| 09/23/1997 | US5670615 Quaternized tertiary aminomethyl acrylamide polymer microemulsions with improved performance |
| 09/23/1997 | US5670060 Method for treating a biological fluid including transition zone material |
| 09/23/1997 | US5670045 Launder cover for use in a clarifier tank |
| 09/23/1997 | US5670039 Linear solids removal unit |
| 09/23/1997 | US5670038 Liquid filter system |
| 09/18/1997 | WO1997033831A2 Treatment of waste liquor in a vertical shaft bioreactor |
| 09/18/1997 | WO1997033713A1 Method for isolating ultrafine and fine particles and resulting particles |
| 09/18/1997 | WO1997033687A1 Method of carrying out a treatment in the presence of a centrifugal force and an apparatus therefor |
| 09/18/1997 | DE19610225A1 Process for treating waste containing organic waste |
| 09/17/1997 | EP0794824A1 Method and device for separating fibrin monomer from blood plasma |
| 09/17/1997 | EP0794823A1 Centrifuge reagent delivery system |
| 09/17/1997 | EP0751831B1 Method and device for treating composite elements |
| 09/16/1997 | US5667689 Method of augmenting flow in a wastewater treatment plant |