Liquid purification or separation – With alarm – indicator – register – recorder – signal or... – Responsive to fluid flow
Patent
1977-08-08
1979-10-16
Wyse, Thomas G.
Liquid purification or separation
With alarm, indicator, register, recorder, signal or...
Responsive to fluid flow
210 15, 210 60, 210 63R, C02C 106, C02B 134
Patent
active
041712633
ABSTRACT:
An activated sludge sewage treatment process which includes a mixed liquor tank and a pressure vessel much smaller in size than said mixed liquor tank. At least a portion of the influent to said tank is directed to the pressure vessel where oxygen is dissolved therein under superatmospheric pressures. The pressure is then released and said portion of the influent gently transferred into said mixed liquor tank so that substantially all of the dissolved oxygen remains in solution until said influent portion is mixed with the sewage in the mixed liquor tank to thereby raise the dissolved oxygen concentration in the tank.
REFERENCES:
patent: 3179225 (1965-04-01), Vrablik
patent: 3243046 (1966-03-01), Kakumoto et al.
patent: 3530990 (1970-09-01), Grimshaw
patent: 3617537 (1971-11-01), Vermette
patent: 3779913 (1973-12-01), Martin
patent: 3799511 (1974-03-01), Svantesson
patent: 3926588 (1975-12-01), Speece
Abbott John A.
Roberts, Jr. Thomas E.
Watson Clyde D.
Wright Bruce M.
FMC Corporation
Kelly R. S.
Wyse Thomas G.
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