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Wastewater treatment generates a large q...

Wastewater treatment generates a large quantity of sludge, which can be treated by

A

anaerobic digesters

B

floc

C

chemicals

D

oxidation pond

Text Solution

Verified by Experts

The correct Answer is:
A
Sludge is further by unaerobic digesters. These are large heated tanks in which its chemical decomposition is catalysed by microorganisms. The liquid is treated by bacteria which breakdown the organic matter remaining in solution. It is then sent to oxidation ponds where heterotrophic bacteria continue the breakdown of the organics and solar UV light destroys the harmful bacteria. chemical are not used in here treatments.
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