Liquid purification or separation – With alarm – indicator – register – recorder – signal or... – Responsive to fluid flow
Patent
1974-01-10
1976-03-23
Wyse, Thomas G.
Liquid purification or separation
With alarm, indicator, register, recorder, signal or...
Responsive to fluid flow
210 63Z, 210195S, 210255, 261 21, 261125, C02C 138
Patent
active
039459187
ABSTRACT:
Methods and apparatus for treating a liquid with a gas wherein a liquid feed is introduced to the initial stage of a multi-stage device for dissolving the gas in the liquid. Efficient mass transfer is achieved by effecting a gas-liquid counter flow in serial stages of the dissolution device. The effluent from the dissolution device exhibits a relatively high dissolved gas concentration which gas is subsequently consumed by the liquid in a reaction tank. A liquid recycle line is provided for returning and combining treated liquid with the incoming feed thereby enabling further dissolution of the gas in the liquid. In the course of treating wastewater with ozone, a flotation clarifier may be provided with the initial stage of the dissolution device to enable the surface coagulation of impurities in the wastewater feed. The coagulants may be skimmed prior to introducing wastewater into subsequent stages of the dissolution device, thereby substantially reducing the ultimate ozone demand of the wastewater.
REFERENCES:
patent: 3054602 (1962-09-01), Proudman
patent: 3443694 (1969-05-01), Malinovsky
patent: 3547815 (1970-12-01), McWhirter
patent: 3660277 (1972-05-01), McWhirter et al.
patent: 3733264 (1973-05-01), Spector et al.
patent: 3772188 (1973-11-01), Edwards
patent: 3826742 (1974-07-01), Kirk et al.
patent: 3892659 (1975-07-01), Kirk
Airco, Inc.
Bopp Edmund W.
Mathews H. Hume
Rae David L.
Wyse Thomas G.
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