The amount of oxygen consumed by the aerobic bacterias which cause the aerobic biological decomposition of sewage, is known« Back to Previous Page
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A. Bio-Chemical Oxygen Demand (B.O.D.)
B. Dissolved Oxygen (D.O.)
C. Chemical Oxygen Demand (C.O.D.)
D. None of these.
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B. Dissolved Oxygen (D.O.) |
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B. Dissolved Oxygen (D.O.) |
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B. Dissolved Oxygen (D.O.) |
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B. Dissolved Oxygen (D.O.) |
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