Filtration and backwashing apparatus for use with a water filtra

Details Filtration and backwashing apparatus for use with a water filtra Filtration and backwashing apparatus for use with a water filtra

1974-10-25

1976-05-04

Hart, Charles N.

Liquid purification or separation

Particulate material type separator, e.g., ion exchange or...

With rehabilitation means

210293, B01D 2318

Patent

active

039546209

ABSTRACT:
A filtration and backwashing apparatus, for use with a filtration system of the type having a filter bed, passes fluids through the entire cross-sectional area of a filter media bed at an even and uniform rate. The apparatus includes two plenum chambers, one being formed between a slotted plate supporting the filter media and the top of the structural deck, the second or lower chamber being formed below the structural fluid-tight deck; nozzles communicating between the two plenum chambers; and means to introduce and pass fluid, either air or water into either the upper or lower plenum chamber.

REFERENCES:
patent: 1572398 (1926-02-01), Leopold
patent: 1871122 (1932-08-01), Kretzschmar
patent: 2453345 (1948-11-01), Row et al.
patent: 3493116 (1970-02-01), Edmiston

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