| Patents for B01D 21 - Separation of suspended solid particles from liquids by sedimentation (18,338) |
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| 06/01/1976 | US3960760 Sewer waste water treating agent produced from waste cracking catalyst |
| 06/01/1976 | US3960648 Method for treating pulp-containing waste liquors |
| 06/01/1976 | US3960584 Cellulose ether |
| 05/25/1976 | US3959152 Traction-driven composite sludge raking mechanism for sedimentation tanks |
| 05/25/1976 | US3959151 Continuously operating sedimentation tank with pier supported rake structure |
| 05/18/1976 | US3957904 Anionic acrylamide copolymer and an amino resin precondensate |
| 05/18/1976 | US3957655 Sphincter cone assembly for purifying water |
| 05/11/1976 | US3956122 Cationic arylamide-styrene copolymers and flocculation of sewage therewith |
| 05/11/1976 | US3956119 Flocculation process |
| 04/27/1976 | US3953332 Purification of waste water containing organic and inorganic impurities |
| 04/20/1976 | US3951819 Sludge removal system |
| 04/20/1976 | US3951818 Chevron clarifier |
| 04/20/1976 | US3951817 Sewage treatment tank and tube settler |
| 04/20/1976 | US3951816 Clarification tank |
| 04/20/1976 | US3951813 Rotatable spiral conduit |
| 04/20/1976 | US3951806 Clarifier apparatus |
| 04/20/1976 | US3951800 Method of storing sludge recovered from the hot water extraction of bitumen from tar sands |
| 04/20/1976 | US3951791 Method for treating fouled water |
| 04/06/1976 | US3948780 Centrifuge for separation of suspensions |
| 04/06/1976 | US3948771 Method and apparatus for separating suspended matter from a fluid by centrifugal force |
| 03/30/1976 | US3947355 Apparatus and process of separating packing house waste |
| 03/30/1976 | US3947353 Water purification process |
| 03/23/1976 | US3945920 Coanda effect oil-water separator |
| 03/16/1976 | US3944687 Method of preparing purifying agents consisting of activated siliceous porous mineral substances |
| 03/02/1976 | US3941698 Grit selector |
| 02/24/1976 | US3940337 Horizontal flow clarifier |
| 02/17/1976 | US3939070 Method and installation for the treatment of waste water to form useful water |
| 02/17/1976 | US3938713 Flow regulator for sediment collecting chambers of a separating device |
| 01/27/1976 | US3935105 Tubular filter in settler |
| 01/27/1976 | US3935104 Automatic foam remover for flotation tanks |
| 01/20/1976 | US3933655 Cable-controlled thickener |
| 01/13/1976 | US3932363 Polyamines containing acid groups |
| 01/13/1976 | US3932284 Barrel shaped mercury separator with spoked agitator |
| 01/13/1976 | US3932276 Hydroxyalkyl guar |
| 01/13/1976 | US3931682 Liquid removing method and apparatus |
| 01/06/1976 | US3931008 Apparatus for the treatment of liquid wastes |
| 01/06/1976 | US3931007 Method of extracting heavy metals from industrial waste waters |
| 01/06/1976 | US3930999 Pulse transfer thickening |