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Which of the following is not used for drying of sludge?

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+2 votes
in Environmental Engineering by (81.4k points)
Which of the following is not used for drying of sludge?

(a) Multiple effect evaporation

(b) Dual effect evaporation

(c) Rotary dryer

(d) Spray dryer

I got this question in an interview for job.

My question is based upon Sludge Thickening, Sludge Dewatering in portion Sewage Filtration and Activated Sludge Process of Environmental Engineering

1 Answer

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Best answer
Right choice is (b) Dual effect evaporation

The best explanation: The process used for drying of sludge is multiple effect evaporation, rotary dryer, spray dryer and flash dryer.

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