| Patents for B01D 21 - Separation of suspended solid particles from liquids by sedimentation (18,338) |
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| 05/10/1988 | US4743382 Method and apparatus for separating suspended solids from liquids |
| 05/10/1988 | US4743376 Water purification by a fluidized bed |
| 05/10/1988 | US4743361 Separating in liquid medium by ultrasonic wave energy; biological particles |
| 05/04/1988 | EP0265625A2 Section device for the treatment of cleaning liquids |
| 05/03/1988 | US4741839 Ultrasonic vibrator tray processes and apparatus |
| 04/27/1988 | EP0193565A4 Apparatus for clarification of water. |
| 04/26/1988 | US4740313 Method of filtering using a rotating and oscillating spinner |
| 04/26/1988 | US4740299 For fuel filters, self-sealing threaded o-ring |
| 04/26/1988 | CA1235827A1 Waste water treatment plant |
| 04/21/1988 | DE3640840C1 Cleaning apparatus for outlet pipes of secondary clarification tanks of sewage treatment plants |
| 04/13/1988 | EP0263580A2 Buoyant filter media |
| 04/13/1988 | EP0263557A1 A method of, and apparatus for, separating trub from hot wort |
| 04/13/1988 | EP0263344A1 Device for the separation of fine solid particles, especially amalgam particles, from waste water |
| 04/12/1988 | US4737288 Of components by density from moving liquid |
| 04/12/1988 | US4737282 Apparatus for separating sand and oil from a waste water stream |
| 04/12/1988 | CA1235140A1 High charge density, cationic methacrylamide based monomers and their polymers |
| 04/05/1988 | US4735731 Adding miscible or immiscible hydrocarbon |
| 04/05/1988 | US4735725 Process for the improved separation of clarified liquid from biomass in the biological treatment of sewage |
| 04/05/1988 | CA1234767A1 Clarification of fluids |
| 03/29/1988 | US4734216 Composition and method for flocculating and removing solids suspended in water |
| 03/24/1988 | WO1987005822A3 Process and device for cleaning and economizing heating oil |
| 03/23/1988 | CN86106021A Technology for accelerating red mud sedimentation in sintering method with polyacrylate sodium |
| 03/22/1988 | CA1234434A1 Apparatus for treating water by way of precipatation, settling, thickening and recirculation of sludge deposits |
| 03/16/1988 | EP0260142A2 Pulp thickeners |
| 03/16/1988 | EP0260069A2 Filter assembly with threaded collection bowl |
| 03/16/1988 | EP0259959A2 Ultrasonic vibrator tray processes and apparatus |
| 03/16/1988 | EP0259928A1 Equipment for the anaerobic fermentation of sewage water and also a method for a combined anaerobic/aerobic fermentation of sewage water |
| 03/16/1988 | EP0259348A1 Process of affecting coal agglomeration time |
| 03/10/1988 | WO1988001608A1 Installation for biological purification of waste water |
| 03/10/1988 | DE3630567A1 Cyclone pressure filter with microwave dryer |
| 03/08/1988 | CA1233946A1 Pulp slurry drainage improver |
| 03/02/1988 | EP0257298A1 Method and device for the cleaning of liquid containers |
| 02/24/1988 | EP0256599A2 Dehydration of fine-grained mud from waters |
| 02/24/1988 | CN87200569U Rectification, gas floating and filtering water purifier |
| 02/24/1988 | CN86209006U Fast sediment purifier for suspended impurity in waste liquid |
| 02/23/1988 | US4726902 Cyclone degritter for solids liquids separation |
| 02/18/1988 | DE3627148A1 Concrete tank |
| 02/18/1988 | DE3626484A1 Settling and thickening vessel for solid-liquid separation |
| 02/16/1988 | US4725367 Removal suspension solids from liquids |
| 02/11/1988 | WO1988000928A1 Calcium hypochlorite compositions |
| 02/11/1988 | WO1988000927A1 Method for the treatment of sewage and other impure water |
| 02/11/1988 | WO1988000856A1 Automatically adjustable weir and environmentally protected sensor |
| 02/11/1988 | DE3627119A1 Float material take-off channel |
| 02/09/1988 | US4724088 Scraping device in a settling basin |
| 02/09/1988 | US4724085 Pretreat with coagulant, then with cationic, and anionic polyelectrolytes |
| 02/09/1988 | US4724073 Reactor piping and flow control system |
| 02/04/1988 | DE3625333A1 Process and apparatus for the release, dispersal and separation of solid deposits |
| 02/03/1988 | EP0255283A1 Products and processes for the flocculation of aqueous suspensions |
| 02/03/1988 | CN87208254U Device for separating solid particle from liquid |
| 02/02/1988 | US4722800 Water treatment |
| 02/02/1988 | US4722791 From paint spray booths |
| 01/28/1988 | EP0238510A4 Water filtering system. |
| 01/27/1988 | CN87202966U Deposition basin for sewage treatment with water inlet and outlet along periphery |
| 01/27/1988 | CN87104931A Ultrasonic vibrator tray processes and apparatus |
| 01/26/1988 | US4721574 Cationic acrylamide polymer |
| 01/21/1988 | DE3624523A1 Apparatus for filtering the spray liquid in cleaning machines |
| 01/19/1988 | US4720346 Synthetic polymer, shear stability |
| 01/13/1988 | CN87206680U Combined device of foul acid liquid purification |
| 01/12/1988 | US4719282 Antistatic agents |
| 01/12/1988 | US4719020 Process for concentrating a suspension of microscopic particles |
| 01/07/1988 | EP0252070A2 Apparatus for aerobic waste water purification |
| 01/07/1988 | EP0251456A1 Coal dewatering |
| 01/07/1988 | EP0251182A1 Vinylamine copolymer, flocculating agent and paper strength increasing agent using the same, as well as process for producing the same |
| 01/05/1988 | CA1231064A1 Cross-flow separator |
| 12/30/1987 | CN86104439A Making and uses of a composite coagulant |
| 12/30/1987 | CN86104039A Red mud separating technique in the process of aluminium oxide preparation |
| 12/29/1987 | US4715966 Septic tank sludge level indicator |
| 12/29/1987 | US4715962 Petroleum refinery wastes |
| 12/23/1987 | DE3620716A1 Apparatus for clearing and conducting away settled sludge in round settling tanks of sewage treatment plants |
| 12/23/1987 | DE3620715A1 Process and apparatus for clearing and removing by suction settled sludge in settling tanks of sewage treatment plants |
| 12/23/1987 | DE3620602A1 Apparatus for discharging sludge from a liquid tank |
| 12/22/1987 | US4714558 Water pollution control |
| 12/22/1987 | CA1230562A1 Cable lifting mechanism for sedimentation device |
| 12/16/1987 | EP0249137A2 Decantation process for a liquid |
| 12/16/1987 | EP0249023A1 Swirl chamber separator |
| 12/16/1987 | EP0248959A1 Turbulence control system of an intra-channel clarifier |
| 12/15/1987 | US4713181 Paint-booth waste is skimmed from water suspension; dewatered using flexible vibrating conveyer; screened dried for disposal |
| 12/12/1987 | CN86208402U Effluent treating device |
| 12/08/1987 | US4711727 Compositions comprising mineral particles in suspension and method of treating aqueous systems therewith |
| 12/08/1987 | US4711721 Waste water sludge thickener with odor control |
| 12/08/1987 | US4711716 Decanting apparatus |
| 12/03/1987 | WO1987007178A1 Manipulating particulate matter |
| 12/03/1987 | WO1987007175A1 Sludge scraper mechanism for settling tanks in sewage treatment plants |
| 12/02/1987 | EP0247340A1 Method and apparatus for isolating fractions of macromolecules in a density gradient |
| 12/01/1987 | US4710304 Aged aqueous solution of high molecular weight polymer added to sludge |
| 12/01/1987 | US4710292 Digester tank with foam control cover |
| 12/01/1987 | US4710291 Two-stage apparatus for clarifying liquid charged with solid matter |
| 12/01/1987 | US4710290 Fluid clarifying assembly |
| 11/26/1987 | DE3617442A1 Mobile bridge |
| 11/24/1987 | US4709309 Electric flashlight |
| 11/24/1987 | US4708710 Particle separation process |
| 11/19/1987 | WO1987006855A1 Coal dewatering |
| 11/19/1987 | EP0245715A2 Apparatus for the treatment of liquids containing impurities, residues and/or ageing products |
| 11/18/1987 | CN86103265A Manufacturing high molecule flocculant from jew's-ear and tremella |
| 11/17/1987 | US4707277 Method and apparatus for removing granular material from an aeration basin |
| 11/17/1987 | US4707254 Upflow type with sludge blanket; anaerobic |
| 11/12/1987 | DE3615774A1 Transportable device for the treatment of spent emulsions, solutions, industrial effluents and the like |
| 11/11/1987 | EP0245140A2 Lamellar decanter |
| 11/11/1987 | EP0244881A1 Cross-flow separator for separating component suspended in a liquid |
| 11/11/1987 | CN86106532A Acidic waste water processing agent |