Secondary sewage treatment is primarily a/an | vedclass

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(D) Secondary sewage treatment,also known as biological treatment,involves the use of aerobic and anaerobic microorganisms to decompose organic matter

Vedclass · Accepted Answer

Biological process

Vedclass · Answer

(D) Secondary sewage treatment,also known as biological treatment,involves the use of aerobic and anaerobic microorganisms to decompose organic matter present in the sewage. Primary treatment is a physical process involving filtration and sedimentation. Secondary treatment relies on the metabolic activity of microbes (bacteria and fungi) to reduce the Biological Oxygen Demand $(BOD)$ of the effluent. Therefore,it is essentially a biological process.

Secondary sewage treatment is primarily a/an ...... process.

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