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Biology
Which of the following in sewage treatment removes suspended solids ?
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Q. Which of the following in sewage treatment removes suspended solids ?
NEET
NEET 2017
Microbes in Human Welfare
A
Secondary treatment
12%
B
Primary treatment
70%
C
Sludge treatment
14%
D
Tertiary treatment
3%
Solution:
Primary treatment is a physical process which involves sequential filtration and sedimentation.