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The detention period for a sedimentation tank where coagulation takes place is ____________

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The detention period for a sedimentation tank  where coagulation takes place is ____________

(a) 30 seconds

(b) 1 minute

(c) 1hour

(d) 2hour

The question was posed to me during an online interview.

My question is based upon Design of Sedimentation Tank topic in chapter Sedimentation and Chemical Clarification of Environmental Engineering

1 Answer

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Best answer
Correct answer is (d) 2hour

The best explanation: The detention period for a sedimentation tank without coagulation is 4 hours, whereas with coagulation is 2 – 2.5 hours.

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