Botany-Sewage Treatment
NEET Botany Sewage Treatment MCQ Question
Type: MCQ-numerical-Hard-Class 12
If a sewage treatment plant has an aeration tank that processes 5000 cubic meters of primary effluent per day, and the microbial treatment reduces the biological oxygen demand (BOD) by 95%, what is the volume of treated effluent that still meets the BOD reduction requirement?
A
4750 cubic meters
B
5000 cubic meters
C
250 cubic meters
D
5250 cubic meters
Correct Answer
Option B
Detailed Explanation
The entire volume of 5000 cubic meters undergoes treatment, and the BOD reduction does not change the volume of the effluent, only the quality. Thus, 5000 cubic meters of treated effluent meets the BOD reduction requirement.
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