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Environmental Issues

Question

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In which one of the following the BOD (Biochemical Oxygen Demand ) of sewage (s), distillery effluent (DE), paper mill effluent (PE) and sugar mill effluent (SE) have been arranged in ascending order?

SE < S < PE < DE

SE < PE < S < DE

PE < S < SE < DE

S < DE < PE < SE

Solution

D.

S < DE < PE < SE

The ascending order of BOD is sugar mill effulent> paper mill effulent> Distillery effluent> Sewage.

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