What is sludge? Explain how it is treated.

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Filo · Accepted Answer

Sludge is a semi-solid slurry that can be produced from a range of industrial processes, from water treatment, wastewater treatment or on-site sanitation systems or 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.
Dried Sludge is used as manure instead of taking up space in a landfill or other disposal facility to improve and maintain productive soils and stimulate plant growth because it has nutrient-rich organic materials.

Question Text	What is sludge? Explain how it is treated.
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