Liquid purification or separation – Particulate material type separator – e.g. – ion exchange or... – With rehabilitation means
Patent
1985-10-02
1987-06-16
Sever, Frank
Liquid purification or separation
Particulate material type separator, e.g., ion exchange or...
With rehabilitation means
2103331, B01D 2324, B01D 2712
Patent
active
046734988
ABSTRACT:
A filter has a hollow tube (5) which supports exteriorly of the tube (95) a plurality of filter compartments (11). The filter compartments (11) comprise particulate filter media (12) confined between first and second screens (14, 13). Disposed within the tube (5) is a rotatable backwash pipe 8 having backwash ducts (9) which align in turn with holes (7) in the tube (5) leading to the compartments to permit backwashing of the compartments (11). In the preferred arrangement secondary backwash flow is provided between the first and second screens (14, 13).
REFERENCES:
patent: 4082664 (1978-04-01), Lindstol
patent: 4430220 (1984-02-01), Litzenburger
Fergusson Charles W.
Swinney Denis P.
Twizell Norman
Sever Frank
Swinney Engineering Limited
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