Launder with baffle system and regulatable air discharge structu

Details Launder with baffle system and regulatable air discharge structu Launder with baffle system and regulatable air discharge structu

1993-02-22

1994-02-15

Dawson, Robert A.

Liquid purification or separation

Processes

Separating

210269, 210271, 210275, 210188, 210 86, B01D 2446

Patent

active

052863921

ABSTRACT:
A launder and baffle structure, used in association with a filtration tank of the type using granular filtration media, is disclosed which reduces the amount of filtration media lost during a backwashing cycle. The structure of the invention includes an elongated launder, baffle structure system associated with the elongated launder and regulatable air discharge structure associated with the baffle structure system. The structure of the invention is configured to reduce velocity of flow in order to provide settling of filter media from solution and is configured to provide dissipation of air from solution to further enhance quiescence of flow and settling of filter media from solution. The regulatable air discharge system is adjustable to release a selected amount of air from beneath the baffle system in order to regulate turbulence and thereby facilitate quiescence of flow.

REFERENCES:
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patent: 5207905 (1993-05-01), O'Brian et al.
patent: 5227077 (1993-07-01), Shea

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