Question
What is sludge? Explain, how it is treated?
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Answer
Collected semi-solid wastes such as faeces that settle down during wastewater treatment are called sludge.
The sludge is removed by 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. Activated sludge produced by the decomposition of bacteria is used as manure.
The sludge is removed by 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. Activated sludge produced by the decomposition of bacteria is used as manure.
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