

MCQOPTIONS
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1. |
The organic loading in an activated sludge plant is defined as ___________ |
A. | Mass of BOD per day/Volume of the aeration tank |
B. | Volume of aeration tank/Mass of BOD per day |
C. | The mass of BOD per day/Volume of secondary clarifier |
D. | Aeration period * Volume of aeration tank |
Answer» B. Volume of aeration tank/Mass of BOD per day | |