Process of treating wastewater with oxygen

Details Process of treating wastewater with oxygen Process of treating wastewater with oxygen

1979-06-11

1981-08-25

Wyse, Thomas G.

Liquid purification or separation

Processes

Treatment by living organism

210629, 210926, C02F 326

Patent

active

042858186

ABSTRACT:
A process for treating wastewater with oxygen in which oxygen of a higher concentration than atmospheric oxygen is contacted at least intermittently with the water surface and introduced into the wastewater through agitation of the water surface. At least a part of the total volume of the wastewater is treated by carrying out alternately at least two of the following three modes of operation: (a) surface aeration of the wastewater using atmospheric air; (b) oxygenation while maintaining atmospheric pressure above the wastewater; and (c) oxygenation while maintaining positive pressure above the wastewater with the operating modes alternating with each other in response to variations in the volume and/or character of the wastewater being treated. The wastewater is circulated on a horizontal course and is exposed to the introduction of oxygen or oxygen-enriched air in one or several sections of its course whereas it is exposed to the atmosphere on the remainder of its course.

REFERENCES:
patent: 3725258 (1973-04-01), Spector et al.
patent: 3757950 (1973-09-01), Zebley
patent: 3964998 (1976-06-01), Barnard
patent: 4159243 (1979-06-01), Okey

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