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Which of the following statement about s...

Which of the following statement about sewage treatment is false?

A

In primary treatment, large sized particles are filtered through screen and residual water is subjected to sedimentation

B

Coagulation can be carried out by passing ozone through waste water

C

In tertiary treatment, the waste water is treated with lime to remove phosphate following by coagulation

D

Secondary treatment involves aerobic digestion of the organic waste.

Text Solution

Verified by Experts

The correct Answer is:
B
Coagulation can be carried out by adding alum and ferric choride in waste water.
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