+1 vote
in Environmental Engineering by (81.4k points)
What is the permissible negative head loss of a rapid sand filter?

(a) 0.2-1m

(b) 0.1-0.5m

(c) 0.5-2m

(d) 0.8-1.2m

I had been asked this question in homework.

This intriguing question comes from Problems in Filter Operation in portion Filtration of Environmental Engineering

1 Answer

+2 votes
by (693k points)
selected by
 
Best answer
Right choice is (d) 0.8-1.2m

The explanation is: The permissible negative head loss of a rapid sand filter is 0.8-1.2m. When the permissible limits are reached, the filter run is terminated and the filter is back washed.

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
...