Apparatus for continuous purification of liquids

Details Apparatus for continuous purification of liquids Apparatus for continuous purification of liquids

1991-02-08

1993-01-05

Bascomb, Jr., Wilbur

Liquid purification or separation

Processes

Making an insoluble substance or accreting suspended...

210707, 2102212, 210519, 210525, 210530, 209170, B01D 17035, C02F 124

Patent

active

051768356

ABSTRACT:
An apparatus and method for the continuous clarifying of liquids containing suspended solid substances comprises a flotation cell with a liquid head height of less than 1 meter, with a ratio between the liquid head and the cell diameter comprised between 0.25 and 0.05. The cell has a bottom axial inlet for liquid to be clarified, supersaturated with gas, so as to generate an axial ascending current of the liquid to be clarified with radial divarication toward the surface of the liquid head. A framework associated with the cell rotates concentrically with respect thereto and supports a spillway unit for collecting the flotated layer and a scraper unit which affects all the wet surfaces of the cell. A discharge outlet is furthermore provided in the lower part of the cell for the outflow of clarified liquid which falls toward the bottom of the cell.

REFERENCES:
patent: 2223257 (1940-11-01), Mallory
patent: 2695710 (1954-11-01), Gibbs
patent: 2874842 (1959-02-01), Krofta
patent: 3446488 (1969-05-01), Mail
patent: 4022696 (1977-05-01), Krofta
patent: 4175041 (1979-11-01), Drnevich
patent: 4184967 (1980-01-01), Krofta
patent: 4784764 (1988-11-01), Kleinschnittger
patent: 4931175 (1990-06-01), Krofta

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