Filter apparatus using floating filter medium

Details Filter apparatus using floating filter medium Filter apparatus using floating filter medium

1978-08-21

1980-04-15

Hart, Charles N.

Liquid purification or separation

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

With rehabilitation means

B01D 2938, B01D 3338

Patent

active

041983017

ABSTRACT:
A filter apparatus wherein the filter tank is separated by a water-penetrable partition wall into an upper section forming a filtrate reservoir and a lower section forming a filter chamber. Floating filter medium is placed in the filter chamber. Water to be filtered is fed into the filter chamber at the bottom thereof and caused to flow upward, passing through the floating filter medium. The filtrate is removed from reservoir. The apparatus is further characterized by the improvement including: apparatus for agitating the filter medium, a pit beneath the filter chamber, a siphon-shaped discharge pipe for back-flow wash water with a discharge opening positioned adjacent the bottom of the pit, the discharge pipe being provided with a siphon breaker having an air feed port positioned adjacent the bottom of the filter chamber, a supply pipe for feeding water to be filtered into the filter chamber with a feed opening positioned adjacent the bottom of the filter chamber so as not to disturb water retained in the pit.

REFERENCES:
patent: 887069 (1908-05-01), Cotter
patent: 3725240 (1973-04-01), Baum
patent: 4036854 (1977-07-01), Chang
patent: 4052300 (1977-10-01), Mosso

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