what is sludge? Explain how it is treated
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A thick, soft unpleasant substance is called sludge.
Semi-solids such as faeces that settle down during wastewater treatment are called sludge. This sludge is removed using a scraper and then transferred to a tank where it is decomposed by anaerobic bacteria to produce biogas.
Semi-solids such as faeces that settle down during wastewater treatment are called sludge. This sludge is removed using a scraper and then transferred to a tank where it is decomposed by anaerobic bacteria to produce biogas.
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Suldge is untreated sewage.It is treated by making proper drainage system
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