Class 12 · Microbes in Human Welfare

Sewage Composition and Health Hazards — NEET Biology

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What is sewage? In which way can sewage be harmful to us?

NCERT Biology · Class 12 · Chapter 8 · Paragraph 44
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Assertion (A): Secondary sewage treatment produces effluent with significantly reduced pollution potential. Reason (R): Aerobic microbes consume organic matter in the effluent, which significantly reduces its BOD.

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