Liquid purification or separation – With alarm – indicator – register – recorder – signal or... – Responsive to fluid flow
Patent
1975-07-08
1979-01-23
Spitzer, Robert H.
Liquid purification or separation
With alarm, indicator, register, recorder, signal or...
Responsive to fluid flow
210 14, 210 15, 210 60, 210 63R, 210194, 210218, 210219, 210220, C02C 108, C02C 504, C02B 308
Patent
active
041360230
ABSTRACT:
This invention provides improved methods and apparatus for dissolving oxygen in wastewater treatment processes such as is required to satisfy the biological oxygen demand in the activated sludge process for the biodegradation of organic impurities. The invention enables attainment of high concentrations of dissolved oxygen with minimum consumption of oxygen and power. Wastewater with the high concentration of dissolved oxygen may be mixed with a larger volume of untreated wastewater to achieve the desired oxygen concentration and maintain volatile solids in suspension in the bulk liquid for optimum efficiency of purification.
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Chappel Raymond M.
Kirk Bradley S.
Airco, Inc.
Bopp Edmund W.
Cassett Larry R.
Rae David L.
Spitzer Robert H.
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