Liquid purification or separation – With alarm – indicator – register – recorder – signal or... – Responsive to fluid flow
Patent
1977-05-27
1979-11-06
Wyse, Thomas G.
Liquid purification or separation
With alarm, indicator, register, recorder, signal or...
Responsive to fluid flow
210 51, 210 53, C02B 120
Patent
active
041735323
ABSTRACT:
A method for the removal of dissolved and/or suspended solid wastes from the liquid effluent of an industrial plant subsequent a stepwise formation of flocs and precipitates with subsequent removal of same utilizing coagulating and flocculating agents while simultaneously adjusting the pH of the treatment medium. Both ferric chloride, lime and aluminum sulfate are used as primary flocculants with their action enhanced by the use of suitable polyelectrolytes. A coagulant for starches and fats facilitate more complete precipitation of wastes. Means for carrying out the method include at least one clarifier with a special arrangement of baffles to enhance the formation of the flocs and precipitates. In a preferred mode of operation, liquid industrial effluent is first pre-treated with a cationic coagulant and cationic polyelectrolyte prior to the stepwise floc formation and pH adjustments.
REFERENCES:
patent: 2444774 (1948-07-01), Hay
patent: 3171804 (1965-03-01), Rice
patent: 3377274 (1968-04-01), Burke et al.
patent: 3423309 (1969-01-01), Albertson
patent: 3673083 (1972-06-01), Sawyer et al.
patent: 3846293 (1974-11-01), Campbell
Entenmann's, Inc.
Wyse Thomas G.
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