Science, asked by rupesh4942, 11 months ago

what is sludge? how is it obtained? how can it be used?
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Answered by soumyadipkole4
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Answered by Aloneboi26
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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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