Question

What is sludge?Explain how it is treated.​

Answer 1

Answer:

sludge is a waste product product removed from water it is treated in 3 ways primary secondary and tertiary

Answer 2

Answer:

Semi - solid such as feaces that settle down during waste water 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. This biogas is as a low cost fuel for heating, cooking etc.

Explanation:

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