STANDARDZoology-Environmental Issues
STANDARD Zoology Sewage Treatment MCQ Question
Type: MCQ-conceptual-Medium
During which stage of sewage treatment microbes are used
A
Primary treatment
B
Secondary treatment
C
Tertiary treatment
D
All of these
Correct Answer
Option B
Detailed Explanation
Secondary treatment is purely a biological treatment involving microbial activity. In this, there is a vigorous growth of useful aerobic microbes into flocs that consume the major part of the organic matter in the effluent.
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