Question

what is sludge ? explain how it is treated​

Answer 1

Answer:

The residue that accumulates in sewage treatment plants is called sludge (or biosolids). ... Digested sludge is passed through a dewatering step; the dried solids are disposed of, and the water is sent back to secondary treatment.

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Explanation:

Answer 2

Explanation:

The residue that accumulate in sewage treatment plants is called sludge. Digested sludge is passed through a dewatering step, the dried solids are decomposed of ,and the water is set back to the secondary treatment.

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