Which of the following in sewage treatment removes suspended solids ? (a) Tertiary treatment
Which of the following in sewage treatment removes suspended solids ?
(a) Tertiary treatment
(b) Secondary treatment
(c) Primary treatment
(d) Sludge treatment
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Correct Option (c) Primary treatment
Explanation:
In sewage treatment, suspended solids are removed during primary treatment. It is also known as physical treatment.
It consists of shredding, churning, screening and sedimentation. Sequential filtration removes floating and large suspended solids.
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