What is sludge? Explain how itis treated.
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Explanation:
consisting of parts that are positioned together closely or in a tidy way, using very little space:
compact soil/sand
a compact camera/bag
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2
Answer:
Semi-solid wastes like feces that settle down at the bottom during wastewatertreatment are called sludge. Thesludge is removed using a scrapper and then transferred to a separate tank where it is decomposed by the anaerobic bacteria to produce biogas. This biogas is used as fuel for cooking, heating, etc.
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