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The BOD of supernatant liquor in a sludge digestion process is ____ ppm.

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in Environmental Engineering by (81.4k points)
The BOD of supernatant liquor in a sludge digestion process is ____ ppm.

(a) 3000

(b) 0

(c) 1000

(d) 250

The question was posed to me during an internship interview.

Question is from Digestion of Sludge, Sludge Digestion Tank in chapter Sewage Filtration and Activated Sludge Process of Environmental Engineering

1 Answer

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Best answer
Right option is (a) 3000

Easy explanation: The range of BOD of supernatant liquor in a sludge digestion process is between 2000 and 3000 ppm. It is a form of sludge that is obtained in the sludge digestion process.

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