What is sludge? Explain how it is treated. very very very very short answer plz
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Sludge is human waste (like faeces) in waste water left during sewage treatment. Since it is organic waste, it is used to produce biogas and manure. Sludge is collected by a scrapper. It is transferred to a separate tank where it is decomposed by the anaerobic bacteria.
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The residue that accumulates in sewage treatment plants is called sludge (like faces). ... 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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