Liquid purification or separation – With alarm – indicator – register – recorder – signal or... – Responsive to fluid flow
Patent
1974-10-11
1979-12-11
Spitzer, Robert H.
Liquid purification or separation
With alarm, indicator, register, recorder, signal or...
Responsive to fluid flow
B01D 2324
Patent
active
041782453
ABSTRACT:
A filtration method employs a water tank, a filtration tank within the water tank and provided with a filter material for straining solids from sewage supplied to the water tank, to produce filtered water within the filtration tank, a shield or guide plate encompassing the filtration tank adjacent the filter material to provide a liquid flow passage therebetween, and a bubble generator having a plurality of openings for generating bubbles within the flow zone, so that the bubbles pass along the filter material. Sewage water that is supplied to the water tank is conducted to the flow zone where part of the water passes through the filter material and solids suspended therein are strained out and attached to the outer surface of the filter material. The generated bubbles passing through the flow zone create a difference in pressure between a point at which the fluid including the bubble is flowing in the water flow zone and an opposite point within the filtered water chamber of the filtration tank, which will dislodge the solids attached to the filter material and prevent clogging of the filter material so that the filtration and passage of bubbles may be continuous without clogging.
REFERENCES:
patent: 1734999 (1929-11-01), Cruickshank
patent: 2743154 (1956-04-01), Kaufman et al.
patent: 3311239 (1967-03-01), Valdespino
patent: 3353678 (1967-11-01), Dragon
patent: 3713540 (1973-01-01), Davidson et al.
Nakaoka Azuma
Takahashi Sankichi
Beall, Jr. Thomas E.
Hitachi , Ltd.
Spitzer Robert H.
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