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The detention period of a secondary clarifier is ___________

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The detention period of a secondary clarifier is ___________

(a) 30 minutes

(b) 1 hour

(c) 2 hours

(d) 4 hours

I have been asked this question in quiz.

This intriguing question comes from High Rate Trickling Filter and Secondary Clarifier topic in chapter Sewage Filtration and Activated Sludge Process of Environmental Engineering

1 Answer

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Best answer
The correct choice is (c) 2 hours

Explanation: The detention period of a secondary clarifier is between 1.5 hours to 2 hours.

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