Regulating oxygen input in treatment of effluent

Liquid purification or separation – With alarm – indicator – register – recorder – signal or... – Responsive to fluid flow

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210 15, C02C 108

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active

040714438

ABSTRACT:
In the introduction of a finely dispersed gas containing at least about 20 to 45% of oxygen by volume with intensive mixing into a vessel having a gas space and effluent containing biochemically oxidizable constituents, in the presence of activated sludge, the improvement which comprises

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patent: 3997437 (1976-12-01), Prince et al.

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