| Patents for B01D 21 - Separation of suspended solid particles from liquids by sedimentation (18,338) |
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| 11/10/1987 | US4705640 Degradation of polymer flocculants |
| 11/05/1987 | DE3714591A1 Process and apparatus for treating digested sewage sludge |
| 11/04/1987 | EP0243780A2 Polycationic block copolymers |
| 11/04/1987 | CN87202152U Liquid absorbing cover of siphon for seperating liquid from precipitate |
| 11/03/1987 | US4704202 Water filtering system |
| 11/03/1987 | US4704190 Pulp slurry drainage improver |
| 11/03/1987 | CA1228938A1 Biological flocculation of mineral slimes |
| 11/03/1987 | CA1228837A1 Shear and coalescence enhanced 3d-matrix gravity separator for liquids |
| 10/28/1987 | EP0243243A2 Process and apparatus for separating constituent parts from a suspension |
| 10/27/1987 | US4702847 Jets to dislodge, sewage treatment |
| 10/21/1987 | EP0241474A1 A scraping device in a settling basin. |
| 10/20/1987 | US4701266 Solids dewatering apparatus and process |
| 10/20/1987 | US4701263 Precipitation with heating |
| 10/20/1987 | US4701260 Device for continuous separation of solid particles from a liquid suspension |
| 10/15/1987 | DE3612313A1 Process and apparatus for separating the solids from the carrier liquid in suspensions |
| 10/14/1987 | EP0240702A1 Overflow element for a liquid-container, and a sludge-settling tank and a pre-clarifier produced with the use of such an overflow element |
| 10/14/1987 | CN86102135A Solid-liquid separating method of drilling well mud |
| 10/08/1987 | WO1987005822A2 Process and device for cleaning and economizing heating oil |
| 10/08/1987 | DE3610661A1 Sewerage treatment unit having a travelling rake bridge |
| 10/08/1987 | DE3604801A1 Electrolysis with vibratory agglomeration for preferably gypsum-containing residues in the scrubbing solution |
| 10/07/1987 | EP0240458A2 Methods and apparatus for treating a mixture of particles and fluids |
| 10/07/1987 | EP0240348A2 Agent for the removal of nucleic acids and/or endotoxin and method for the removal thereof |
| 10/06/1987 | CA1227720A1 Liquid neutral one step coagulating agents for lacquers and coating materials |
| 10/06/1987 | CA1227619A1 Process for production of chlorine dioxide |
| 10/01/1987 | DE3610737A1 Flushing dump |
| 10/01/1987 | DE3610720A1 Apparatus for preventing formation of ice on wall copings |
| 09/30/1987 | EP0239199A1 Separation system using coalescing techniques |
| 09/30/1987 | EP0239091A2 Particle separation process |
| 09/30/1987 | EP0238510A1 Water filtering system. |
| 09/29/1987 | US4696962 Hydrophilic cationic copolymers of acrylamide or methacrylamide |
| 09/29/1987 | US4696750 Flocculation of particles by polymers that precipitate out of solution |
| 09/29/1987 | US4696741 Different densities |
| 09/29/1987 | CA1227439A1 Apparatus and method for separating a mixture of two liquids |
| 09/24/1987 | WO1987005535A1 Process of affecting coal agglomeration time |
| 09/22/1987 | US4695376 Floating decanter |
| 09/22/1987 | CA1227294A1 Process for separating mineral ultra-fine grain from washings obtained in coal processing or from coal slurries |
| 09/17/1987 | DE3634511A1 Process for purifying oil and equipment for carrying out the process |
| 09/15/1987 | US4693826 Temporary storage |
| 09/15/1987 | US4693821 Positively driven, decanting only over leading edge |
| 09/15/1987 | US4693819 Treatment of emulsions and industrial waste waters |
| 09/09/1987 | EP0235654A1 Process and apparatus to purify contaminated sulphur |
| 09/08/1987 | US4692246 Storage of liquids in same device that cleans them |
| 09/08/1987 | US4692245 Filter assembly with high pressure connection to collection bowl |
| 09/03/1987 | DE3605727A1 Decanting apparatus |
| 09/02/1987 | CN86107101A Solid-liquid separating device and process system for particle material |
| 08/27/1987 | WO1987004944A1 Method of and apparatus for separating a medium in different components by means of gravity |
| 08/25/1987 | US4689155 Method for purifying solids-stabilized emulsions |
| 08/18/1987 | US4688199 Transducers and control means |
| 08/18/1987 | US4687576 Current propelled waste water treatment mechanism |
| 08/18/1987 | US4687574 Portable waste water |
| 08/18/1987 | CA1225793A1 High molecular weight water-soluble polymers and flocculation method using same |
| 08/12/1987 | EP0232217A2 Process and installation for purification of waste water |
| 08/12/1987 | CN87101788A Sediment bowl of peripheric inlet-outlet sewage of sewage treatment |
| 08/11/1987 | US4685974 Method for clearing settled sludge |
| 08/11/1987 | US4685486 Condensate separating and discharging device with apertured float cover |
| 08/05/1987 | EP0230899A2 Thin channel split flow process and apparatus for particle fractionation |
| 07/29/1987 | CN86104749A Contrivance for treatment spent emulsion and industrial waste water |
| 07/22/1987 | EP0229624A2 Apparatus for removal of floating sewage from the surface of liquids |
| 07/22/1987 | EP0229233A2 Apparatus for treating used emulsions and industrial waste water |
| 07/21/1987 | US4681684 Useful as either inlet sweep or outlet tee |
| 07/21/1987 | US4681683 Lamella gravity separator |
| 07/21/1987 | US4681682 Air flotation clarifier |
| 07/16/1987 | DE3600788A1 Scum skimmer |
| 07/16/1987 | DE3539858C1 Washing apparatus for cleaning the outlet channels of secondary clarifying tanks |
| 07/15/1987 | EP0228637A2 Acrylamide and dimethylaminopropylacrylamide copolymers as flocculants and process for dewatering sewage sludge by means of these flocculants |
| 07/15/1987 | EP0228396A1 Arrangement for the flocculation of flocculable substances, particularly for the purification of effluents from deinking installations for used paper processing. |
| 07/07/1987 | US4678654 Mixture of hydrochloric and sulfuric acids free of sulfur dioxide |
| 07/07/1987 | US4678585 Flocculation of red muds |
| 07/01/1987 | EP0227089A2 Filter for removing particulates suspended in a fluid E.G. gaseous medium |
| 06/30/1987 | US4676900 Jewelry by-products; fabric trap for fine particles |
| 06/30/1987 | CA1223700A1 Process for producing acrylamide-type cationic polymeric flocculant |
| 06/23/1987 | US4675116 Dewatering solids suspensions with controlled flocculant addition |
| 06/23/1987 | US4675106 Polyamide, friction resistance, disposable |
| 06/23/1987 | CA1223107A1 Use of copolymers of 2-acrylamido-2-methylpropane sulfonic acid for improving retention and dewatering in the manufacture of paper |
| 06/16/1987 | US4673704 Equilibratine agents |
| 06/16/1987 | US4673493 Apparatus for supplying filtered liquid |
| 06/11/1987 | DE3628786A1 Process for the continuous multiple-stage final purification of coal-containing waste waters |
| 06/11/1987 | DE3543408A1 Process for sewage purification using activated sludge |
| 06/10/1987 | EP0225017A1 Filter Apparatus |
| 06/04/1987 | DE3542160A1 Apparatus for separating off amalgam particles |
| 06/04/1987 | DE3542134A1 Apparatus for separating off fine solid particles from waste water |
| 06/04/1987 | DE3542114A1 Centrifuge for separating off fine solid particles from waste water |
| 06/03/1987 | EP0224233A2 Apparatus for the separation of small solids particles |
| 06/03/1987 | EP0224232A2 Solid bowl centrifuge for the separation of small solids particles |
| 06/03/1987 | EP0223860A1 Germicidal and purifying agent for drinking water |
| 06/02/1987 | US4670147 Blood sampling, analyzing |
| 06/02/1987 | US4670142 Separating grit from sewage |
| 06/02/1987 | US4670138 Apparatus for controlling an infinitesimal flow rate of fluid |
| 05/27/1987 | DE3638584A1 Scraper beam for flight scrapers |
| 05/26/1987 | US4668393 Spiral channel to collect pollutants, such as water |
| 05/21/1987 | DE3540606A1 Round sedimentation tank furnished with baffle-plate packages |
| 05/21/1987 | DE3540508A1 Process and device for removing dispersed and dissolved substances from liquids |
| 05/13/1987 | CN86105063A Method and apparatus for use in separating solids from liquids |
| 05/07/1987 | DE3538539A1 Movable device for cleaning roadways in particular |
| 05/05/1987 | US4663058 Process for continuous separation of leukocyte/platelet-enriched fraction from whole blood |
| 05/05/1987 | US4663042 Sedimentation tanks; waste treatment |
| 05/05/1987 | US4663038 Wastewater treatment |
| 04/28/1987 | US4661263 Water clarification |
| 04/28/1987 | US4661243 Dewatering in centrifugal separator |
| 04/28/1987 | US4661013 Apparatus for impeding fine sediment deposition in harbors and navigational channels |