Liquid purification or separation – With precoat adding or applying means
Patent
1979-04-11
1981-03-10
Granger, Theodore A.
Liquid purification or separation
With precoat adding or applying means
210386, 210396, 210401, B01D 3702
Patent
active
042552613
ABSTRACT:
A separation drum for suction recovery at high concentration of fine particles, such as algae, removed from dilute liquid medium by a belt filter has a thin, perforated wall rotatably mounted on a substantially horizontal, cantilevered beam fixed on a base. A pair of rings or hubs engage the separation drum at opposite ends. One ring is rotatably supported on rollers mounted on the beam, and the other ring is rotatably supported on a bearing mounted on a shaft extending from the beam to a removable end pedestal on the base. A number of interior rollers, also supported from the beam, engage the interior surface of the drum. A conduction or suction box is disposed on the beam or built into the beam in juxtaposition with the upper, interior portion of the separation drum to receive and carry away material passing through the perforated drum wall. A main belt extends around the exterior of the separation drum wall and around a filtration drum within a liquid medium containing algae. Various adjuncts, such as coating devices, secondary belts, sprays, cleaning devices and the like, are arranged to work in conjunction with the main belt and drum. The main belt may be constructed of a coarseweave fabric on which is deposited a layer of precoat material such as paper pulp, or of fine-weave fabric or other perforate material, capable of trapping the suspended algae from the liquid medium as it passes through the main belt on the filtration drum.
REFERENCES:
patent: 1870485 (1932-08-01), Becrafe
patent: 2480716 (1949-08-01), Derfler
patent: 3661262 (1972-05-01), Sanders
patent: 3951805 (1976-04-01), Dodd
patent: 4137159 (1979-01-01), Sawyer
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