Liquid purification or separation – Recirculation
Patent
1980-04-21
1981-12-22
Spitzer, Robert H.
Liquid purification or separation
Recirculation
210199, 210218, 210220, 210259, C02F 324
Patent
active
043069681
ABSTRACT:
A sewage treatment system comprising means defining a receptacle including at least one chamber for receiving a body of sewage composed of liquid and solids the top of which is exposed to air, means for applying air, under pressure, immediately below the upper surface of said body of sewage in said one chamber, at an angle thereto to physically lift portions of said sewage from the upper surface of said body thereof in a spray form, thereby to expose said lifted portions to air and to infuse said portions with oxygen, the nature and angle of application of the air being effective at the same time to induce a current in the body of sewage having a downward spiral and an ever-decreasing velocity, said current being effective to induce suspended solids to be driven to the bottom of said chamber together with the heavy solids settled thereon, thereby to facilitate an extremely rapid aerobic digestion.
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McNeil Corporation
Spitzer Robert H.
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