Question

Explain- Importance of microbes in sewage (water) treatment in cities. ​

Answer 1

Answer:

Clarification and Disinfection

Remaining sludge goes through a second bacterial digestion without oxygen. Anaerobic bacteria further break down the sludge and reduce nitrate and nitrite into nitrogen gas through a process called denitrification. ... Such anaerobic digestion can occur at various stages of the process.

Explanation:

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Answer 2

Answer:

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Explain- Importance of microbes in sewage (water) treatment in cities.

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These microbes consume major part of the organic matter in the effluent as they grow. Due to this, BOD of the effluent is significantly reduced. Thus, use of microbes in sewage treatment helps to remove organic matter from waste water before it is discharged in water bodies like rivers.

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