Arrange the steps of biological sewage treatment process in a sequence.
(A) Vigorous growth of flocs and significant reduction in BOD
(B) Activated sludge pumped into anaerobic sludge digester
(C) Effluent passed into an aeration tank and agitated mechanically
(D) Effluent transfer to settling tank followed by sedimentation of bacterial flocs
Choose the correct answer from the options given below:
(
This question was previously asked in
Shift 07/06/2023 12:00 PM - 2:00 PM
A
(A), (B), (C), (D)
B
(B), (C), (D), (A)
C
(C), (A), (D), (B)
D
(D), (C), (B), (A)
Correct Answer
(C), (A), (D), (B)
Detailed Explanation
Sequence of biological sewage treatment process :
1. Effluent passed into an aeration tank and agitated mechanically
2. Vigorous growth of flocs and significant reduction in BOD
3. Effluent transfer to settling tank followed by sedimentation of bacterial flocs
4. Activated sludge pumped into anaerobic sludge digester
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