+1 vote
in Environmental Engineering by (81.4k points)
The detention period of the Sheffield mechanical aeration tank is ___________

(a) 15 hours

(b) 1minute

(c) 1 hour

(d) 4 hours

The question was asked during a job interview.

This intriguing question comes from Mechanical Aeration System, Treatment of Sludge topic in chapter Sewage Filtration and Activated Sludge Process of Environmental Engineering

1 Answer

+1 vote
by (693k points)
selected by
 
Best answer
The correct answer is (a) 15 hours

Explanation: The detention period of a Sheffield mechanical aeration tank is 15 hours. Its return sludge is 15-20% of sewage flow.

Related questions

We welcome you to Carrieradda QnA with open heart. Our small community of enthusiastic learners are very helpful and supportive. Here on this platform you can ask questions and receive answers from other members of the community. We also monitor posted questions and answers periodically to maintain the quality and integrity of the platform. Hope you will join our beautiful community
...