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Question Practice

What is the main purpose of primary treatment in sewage treatment?

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MCQ_SA
CBSE
Class 12
Biology
Biology
Microbes in Human Welfare
Question Bank

What is the main purpose of pr...

Single Answer MCQ
Q-00084570

What is the main purpose of primary treatment in sewage treatment?

1

To remove pathogens from sewage

2

To reduce the biochemical oxygen demand (BOD)

3

To physically remove solid particles

4

To introduce aerobic bacteria

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