what is sludge ? explain how it is treated
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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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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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