Apparatus for filter backwashing

Liquid purification or separation – Particulate material type separator – e.g. – ion exchange or... – With rehabilitation means

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Details

210275, 210279, 210411, B01D 2324

Patent

active

041916522

ABSTRACT:
An apparatus for filter backwashing includes a vessel containing a bed of filter media. Laterals with nozzles are disposed below the filter media to convey backwashing air and water into the filter bed. Below the laterals are located a manifold and a distribution plenum to carry air into the laterals. The manifold and the distribution plenum are separated by a common wall having a plurality of ports to provide communication therebetween. Communication between the distribution plenum and the laterals is provided by a plurality of conduits, one conduit extending into each lateral from the distribution plenum.

REFERENCES:
patent: 2956682 (1960-10-01), Stephan
patent: 3276585 (1966-10-01), Kalinske
patent: 3831761 (1974-08-01), Chantereau
patent: 4032443 (1977-06-01), Ross
patent: 4076625 (1978-02-01), Scholten et al.

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