Method for protecting a bioreactor pressurized head tank against

Details Method for protecting a bioreactor pressurized head tank against Method for protecting a bioreactor pressurized head tank against

1980-06-13

1981-06-09

Therkorn, Ernest G.

Liquid purification or separation

Processes

Treatment by living organism

210629, 210130, 2101953, 210220, 137571, C02F 322

Patent

active

042723795

ABSTRACT:
A method and apparatus is provided whereby a pressurized long vertical shaft bioreactor is protected against extreme surges of influent waste liquid. The method provides for the transfer of excess waste from the top of the bioreactor head tank to an adjacent collection vessel where, in response to the pressure created in the bioreactor, the collected waste is caused to overflow and is returned to the influent waste stream. The method permits the return of waste from the reactor to the influent stream while bypassing the normal circulation route through the reactor. Simplification of control is provided and float or level control valves may be eliminated thereby reducing construction, operating and maintenance costs.

REFERENCES:
patent: 3301779 (1967-01-01), Kovacs
patent: 3576738 (1971-04-01), Duffy
patent: 3821107 (1974-06-01), Peoples
patent: 3831758 (1974-08-01), Watson
patent: 4069149 (1978-01-01), Jackson
patent: 4086160 (1978-04-01), Roesler
patent: 4137062 (1979-01-01), Mullerheim
patent: 4138328 (1979-02-01), Schnitzler
patent: 4217211 (1980-08-01), Crane
patent: 4230563 (1980-10-01), Roesler
Proceedings of the 31st Industrial Waste Conference, May 4, 5, 6, 1976, Purdue University, Ann Arbur Science, USA, p. 344-351. _
"Breakthrough in Sewage Treatment", Water Services, Apr. 1975, pp. 132, 140. _

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