Abstract: Apparatus and methods for continuous sedimentation-type separation of solids from liquids of a feed slurry in a thickener-clarifier-type tank operated by overflow removal of clarified liquid and underflow removal of a concentrated underflow slurry by using a flocculant in a zone of intense mechanical agitation provided by a rotatable impeller rotated at tip speeds of between approximately 300 to 600 feet per minute to produce relatively small, bead-like floccules directly above the concentrated underflow slurry.

Abstract: A complete filter system mounted on a support platform that can be supported on a flat bed truck and transported over a highway including a vacuum receiver having a plurality of flat wall portions so that each cross-sectional configuration thereof is generally rectangular in shape.

Abstract: A rotary disc filter machine having a rigid scraper blade member supported on radially innermost and outermost circumferentially extending side surfaces of a filter disc unit by cake scraping and blade supporting shoe devices mounted on the radially innermost and outermost end portions of the scraper blade member, the radially innermost end portion of the scraper blade member having a pivotal connection relative to the tank means to enable axial movement of the blade member with the filter disc unit caused by wobble of the filter disc unit while being mounted in a fixed rigid adjusted position relative to the filter disc unit by mounting bracket devices enabling various radial, circumferential, and axial adjustments of the scraper blade position and gap relative to the filter disc unit which is axially confined at the radially outermost portion thereof by guide and abutment devices mounted on the side wall plates of the cake removal slots.