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(A) Secondary treatment of sewage is primarily a biological process.It involves the use of aerobic and anaerobic microbes to decompose the organic mat

Vedclass · Accepted Answer

Biological treatment

Vedclass · Answer

(A) Secondary treatment of sewage is primarily a biological process.It involves the use of aerobic and anaerobic microbes to decompose the organic matter present in the primary effluent.Physical treatment (filtration and sedimentation) is part of primary treatment.Therefore,secondary treatment is correctly identified as biological treatment.

Select the appropriate option regarding secondary treatment.

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