Why are flocs important in the biological tre | vedclass

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Question

(B) Secondary treatment or biological treatment: The primary effluent is passed into large aeration tanks where it is constantly agitated mechanically

Vedclass · Accepted Answer

They consume the major part of the organic matter in the effluent.

Vedclass · Answer

(B) Secondary treatment or biological treatment: The primary effluent is passed into large aeration tanks where it is constantly agitated mechanically and air is pumped into it.This allows the vigorous growth of useful aerobic microbes into flocs (masses of bacteria associated with fungal filaments to form mesh-like structures).While growing,these microbes consume the major part of the organic matter in the effluent.This significantly reduces the $BOD$ (Biochemical Oxygen Demand) of the effluent,thereby cleaning the water.

Why are flocs important in the biological treatment of wastewater?

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