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(D) In the process of sewage treatment,the primary effluent is passed into large aeration tanks where it is constantly agitated mechanically and air i

Vedclass · Accepted Answer

Sedimented flocs

Vedclass · Answer

(D) In the process of sewage treatment,the primary effluent is passed into large aeration tanks where it is constantly agitated mechanically and air is pumped into it. This allows vigorous growth of aerobic microbes into flocs (masses of bacteria associated with fungal filaments to form mesh-like structures). When the sewage is passed into the settling tank,the bacterial flocs are allowed to sediment. This sediment is called activated sludge.

Select the correct option regarding activated sludge.

Similar Questions

What are flocs?

During primary treatment,all solids that settle form $A$ and the supernatant forms $B$.

What kind of process is primary treatment in sewage treatment?

How is $BOD$ reduced in sewage treatment?

When does the $BOD$ level in effluent decrease?

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