Launder with baffle system for recovering filtration media in so

Details Launder with baffle system for recovering filtration media in so Launder with baffle system for recovering filtration media in so

1992-02-26

1993-07-13

Dawson, Robert A.

Liquid purification or separation

Processes

Separating

210269, 210271, 210275, 210188, 55185, 55199, B01D 2446

Patent

active

052270777

ABSTRACT:
A launder and baffle structure, used in association with a filtration tank of the type using granular filter media, is disclosed which reduces the amount of filter media lost during a backwashing cycle. The structure of the invention includes an elongated launder, sloping baffle structure associated with the elongated launder and air discharge structure associated with the sloping baffle structure which releases air from beneath the sloping baffle structure, the air having been dissipated from the fluid. The structure of the invention is configured to reduce velocity of flow in order to provide settling of filter media from solution, is configured to provide dissipation of air from solution to further enhance quiescence of flow and settling of filter media from solution, and directs fluid flow away from the launder. The structure of the invention further includes a wing baffle for dissipating velocity in the fluid.

REFERENCES:
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patent: 4478726 (1984-10-01), Moore
patent: 4624783 (1986-11-01), Black et al.
patent: 4743382 (1988-05-01), Williamson et al.
patent: 4746431 (1988-05-01), Gibaud et al.

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