Liquid purification or separation – With alarm – indicator – register – recorder – signal or... – Responsive to fluid flow
Patent
1976-05-12
1978-06-06
Marantz, Sidney
Liquid purification or separation
With alarm, indicator, register, recorder, signal or...
Responsive to fluid flow
210150, 210151, C02C 106, C02C 110, B01D 2102
Patent
active
040935396
ABSTRACT:
A method for operating an activated sludge wastewater treatment plant which utilizes rotating contactors that are partially submerged in the wastewater in the aeration tank of the activated sludge plant. The rotating contactors provide a fixed film media for the growth of biological life that is present in the recycled activated sludge in the aeration tank. The result is a more active biological coating on the fixed film media than is found on such media when used as a separate secondary treatment. In the preferred embodiment, the energy to rotate the contactors is supplied by the same compressed gas that is normally introduced below the surface of the wastewater in the aeration tank of the conventional activated sludge system.
REFERENCES:
patent: 3703238 (1972-11-01), Torpey
patent: 3704783 (1972-12-01), Antonie
patent: 3744634 (1973-07-01), Schlenz
patent: 3839198 (1974-10-01), Shelef
patent: 3886074 (1975-05-01), Prosser
Autotrol Corporation
Marantz Sidney
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