| Patents for B01D 21 - Separation of suspended solid particles from liquids by sedimentation (18,338) |
|---|
| 06/20/1991 | DE3941673A1 Device for removing large impurities from waste water - contg. screw conveyor modified to act as filter and convey impurities unable to pass through filter to sediment disposal |
| 06/13/1991 | WO1991008174A1 Processing plant for i.a. sanitary slaughtering |
| 06/12/1991 | EP0432018A1 Process for treatment of water by simultaneous flocculation and adsorption by means of partially hydrophobic polyelectrolytes |
| 06/11/1991 | US5022992 Apparatus for separating sludge |
| 06/07/1991 | CA2031618A1 Process for the treatment of waters with simultaneous floculation and adsorption by partly hydrophobic polyelectrolytes |
| 06/06/1991 | WO1991008038A1 Method and apparatus for effecting gas-liquid contact |
| 06/06/1991 | DE3939984A1 Prepn. device for auxiliary flocculant additives - where the additive is mixed as it passes through three chambers provided with agitators mounted on a single shaft |
| 06/05/1991 | EP0430323A1 Silver recovery device |
| 06/05/1991 | EP0429841A1 Separator for waste water loaded with deposit and floating material |
| 06/05/1991 | EP0386004A4 Cell block collection method and apparatus |
| 06/05/1991 | CN1012720B Ceramic members and a method and for producing them |
| 06/04/1991 | US5021156 Dump truck for receiving draining and disposing of dredged material |
| 06/04/1991 | US5021153 Combined apparatus for removing grit and grease from sewage |
| 06/04/1991 | CA1284606C Condensate separator and discharging device |
| 05/23/1991 | DE3938555A1 Modular construction method for waste water purificn. system - in which central sedimentation chamber of modular construction elements is surrounded by biological water purificn. chamber |
| 05/22/1991 | EP0427855A1 Liquid processing apparatus, its continuous liquid processing apparatus and its continuous liquid processing method |
| 05/22/1991 | EP0427804A1 Water purifying means |
| 05/21/1991 | US5017043 Method of an means for controlling precipitation in evaporation ponds |
| 05/14/1991 | US5015398 Filters for removal of particles and bubbles from photographic emulsions for photographic films |
| 05/14/1991 | US5015393 Water treatment for accumulation and removal of floating sludge |
| 05/14/1991 | US5015392 Thickeners for liquids and pulps |
| 05/08/1991 | DE3936753A1 Cleaning inspection interior in sepn. container - by ribbed scraper strip moved mechanically or manually over surface |
| 05/08/1991 | CN1051157A High-molecular cpd. coagulant and prepn. thereof |
| 05/07/1991 | US5013440 Flushing liquor decanter drag modification |
| 05/07/1991 | US5013435 Clarifying system for liquids |
| 05/07/1991 | US5013432 Filter system for liquids with particles in suspension |
| 05/07/1991 | CA1283983C Side channel clarifier |
| 05/04/1991 | WO1991006627A1 Nested-cone separator |
| 05/04/1991 | CA2072141A1 Nested-cone separator |
| 05/02/1991 | WO1991005869A1 Fungal cell wall material with flocculant properties, method for its production |
| 05/02/1991 | DE3936002A1 Device for flushing rainwater storage tank - has inner vessel which can be tipped about horizontal axis |
| 05/01/1991 | CN2075977U Movable plate settling device |
| 04/30/1991 | US5011605 Sewage treatment plant |
| 04/30/1991 | CA1283748C Vinylamine copolymer, flocculating agent and paper strength increasingagent using the same, as well as process for producing the same |
| 04/25/1991 | DE3934874A1 Environmentally acceptable solid extraction from fluid - includes separator with divided chamber having horizontal and vertical screws with compression zone for prodn. from solids |
| 04/24/1991 | EP0423964A1 Improved apparatus for the decantation treatment of liquid containing therein suspended material |
| 04/24/1991 | CN2075534U High-efficient coagulative reaction, precipitation tank |
| 04/24/1991 | CN2075533U Hexagon inclined tube |
| 04/23/1991 | US5009796 Pump for washing, leaching or concentrating particles in a liquid, or to separate particles from the liquid or from each other |
| 04/17/1991 | EP0422893A1 Process and apparatus for decantation of suspensions |
| 04/17/1991 | CN1050708A Polysilicate flocculant and preparing process thereof |
| 04/17/1991 | CN1050686A Flocculant for water treatment |
| 04/17/1991 | CN1012358B Method of treating penicillin waste water |
| 04/16/1991 | US5008319 Homogeneous mixtures of solid organic acids and solid cationic ester-based polymer flocculants |
| 04/14/1991 | CA2027519A1 Process and apparatus for decantation of suspensions |
| 04/11/1991 | CA2000476A1 Fuel purifying apparatus |
| 04/10/1991 | EP0421418A2 Method for preparing a ceramic-forming prepreg tape |
| 04/09/1991 | US5006266 Standing waves with intersecting nodes, displacement of particles and liquid in a column |
| 04/09/1991 | US5006260 Separation of one phase dispersed im emulsion or in suspension in continuous phase of different density |
| 04/09/1991 | US5006231 Flocculant control system |
| 04/03/1991 | CN1050337A Serial inclined-tube reaction settling basin |
| 04/02/1991 | US5004536 Water reclamation apparatus |
| 04/02/1991 | US5004534 Catch basin |
| 03/27/1991 | CN2073769U Compounding device of flocculant aqueous solution |
| 03/22/1991 | WO1991004087A1 Device for taking up fluids |
| 03/22/1991 | CA2066742A1 Device for taking up fluids |
| 03/21/1991 | DE3928370A1 Gravity sepn. of slurry fed into inclined cylinder - to controlled distance by axial feed with annular gap met by radial connectors |
| 03/21/1991 | DE3928369A1 Modular concentrator for gravity sepn. - has inclined cylinder with common raw material inlet and light fraction outlet |
| 03/20/1991 | EP0417367A1 Buoyant coarse media flocculator |
| 03/20/1991 | EP0417114A1 Separating constituents of a mixture of particles |
| 03/20/1991 | CN2073319U Honeycomb oblique tubes for circular settling tank |
| 03/20/1991 | CN1012076B Reclaiming waste oil with organic coalescer |
| 03/19/1991 | US5000853 Process for the improved separation of clarified liquid from biomass in the biological treatment of sewage |
| 03/14/1991 | DE3930341A1 Electric motor drive for clearing mechanism for sewage - has overload switch in form of electronic effective power measuring unit inserted in drive motor circuit |
| 03/14/1991 | DE3929044A1 Oil separator - to separate oil from oil-water mixts. in inclined-plate separator, for removal of solid material deposits |
| 03/13/1991 | EP0416495A2 Solution separating apparatus |
| 03/13/1991 | EP0416184A1 Muddy water processing apparatus |
| 03/12/1991 | US4999115 Treating waste from coal processing, flocculation, clarification |
| 03/12/1991 | US4998553 Controlling particulate material |
| 03/12/1991 | CA1281442C Process for water treatment |
| 03/07/1991 | DE3929271A1 Device for further purificn. of treated waste water - water from isolated sewage treatment units is cleaned in a biological reaction vessel with internal post-clarifying buffer |
| 03/07/1991 | DE3929050A1 Channel-cleaning device for clarifying tanks - in which forward motion of brush support system is used to cause brushes to rotate, thus eliminating need for separate brush drive motor |
| 03/06/1991 | EP0415127A1 Process for the treatment of turbid waste waters |
| 03/06/1991 | EP0414861A1 Device for removing bottom and surface sludge from sewage-treatment basins or the like |
| 03/06/1991 | CN1011885B Two-stage coagulation for wastewater treatment |
| 03/06/1991 | CN1011884B Flocculant for water treatment |
| 03/05/1991 | US4997759 Use of blends of mannich acrylamide polymers and dimethyldiallylammonium halide polymers for flocculating enzyme broth streams |
| 03/05/1991 | US4997579 Procedure for the draining of sludge |
| 03/05/1991 | US4997573 Flocculation |
| 03/05/1991 | US4997562 Multi-chambered septic tank with elongated partition crossover conduits |
| 03/05/1991 | US4997557 Floating, mixing, aerating and decanting unit |
| 03/05/1991 | US4997555 Fuel filter assembly with heater |
| 02/28/1991 | DE4011400A1 Treating liquids, slurries and pastes - by contact with comminuted organic fibres of high absorption capacity, to produce flowable or plastic material |
| 02/27/1991 | EP0413940A2 Device for continuous and automatic draining sludge, especially sewage sludge |
| 02/26/1991 | US4995979 Settling device for separating trub from hot wort |
| 02/21/1991 | WO1991001943A1 Combined structure for drainage and/or partial or complete purification of flowing liquids, in particular waste water and/or rain water, and waste water clarification reactor |
| 02/19/1991 | US4994192 Amine polymers as coagulator accelerators in blood phase separation |
| 02/19/1991 | US4994187 Apparatus for removing sewage sludge from the bottom or the surface in a settling basin |
| 02/19/1991 | US4994182 Apparatus for the thickening by floatation of slurries produced during the treatment of waters |
| 02/19/1991 | US4994179 Vessel containing hydrocyclone and skimming chamber |
| 02/14/1991 | DE4001922C1 Separator or sludge catcher with no limiting sealing ring - comprises concrete sections which are sealed at contact points using perforated injection tube to apply seal |
| 02/13/1991 | EP0412658A2 Separator for the treatment of liquids |
| 02/13/1991 | EP0412388A2 Process of preparation of fine particles of polymers in powder form |
| 02/13/1991 | EP0412173A1 Process and installation for the treatment and purification of waste water |
| 02/09/1991 | CA2021759A1 Preparation of finely divided polymer powders |
| 02/06/1991 | EP0411357A1 Apparatus for the separation of a fluid from solid particles |
| 02/06/1991 | CN2070734U High efficient combined water cleaner |
| 02/05/1991 | US4990265 Method of dewatering oil mud |
| 02/05/1991 | US4990245 Sequence controller system for regenerating water treatment units |
| 02/05/1991 | CA1279829C Apparatus for collecting and discharging waste material |