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1. |
For a colony of 10,000 persons having sewage flow rate of 200 L/capita/day, BOD of applied sewage of 300 mg/L and organic loading of 300 kg/day/hectare, the area of an oxidation pond required for treating the sewage of the colony is |
A. | 0.2 hectare |
B. | 1 hectare |
C. | 2 hectare |
D. | 6 hectare |
Answer» D. 6 hectare | |