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Which of the following is not suitable for dewatering of raw sludge?

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+1 vote
in Environmental Engineering by (81.4k points)
Which of the following is not suitable for dewatering of raw sludge?

(a) Centrifugation

(b) Drying lagoon

(c) Drying bed

(d) Vacuum filter

The question was posed to me in an internship interview.

My question is from Sludge Thickening, Sludge Dewatering topic in division Sewage Filtration and Activated Sludge Process of Environmental Engineering

1 Answer

+2 votes
by (693k points)
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Best answer
Correct choice is (b) Drying lagoon

To explain I would say: In drying lagoon, if raw sludge is used that contains supernatant liquor, foul smell and fly nuisance occur in the dewatering process.

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