Question

What is sludge? Explain how it is treated​

Answer 1

Answer:

What is sludge? Explain how it is treated.

Answer:

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. This biogas is used as a low- cost fuel for heating, cooking, etc. It is also used to produce electricity.

Answer 2

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In sewage treatment plants, the residue that accumulates is called sludge. It is treated by anaerobic bacteria.

Complete answer : - Using a skimmer, sludge is collected and then transported to a tank where it is decomposed for biogas processing by anaerobic bacteria.