How is BOD reduced in sewage treatment? | vedclass

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(B) During secondary treatment,the sewage is constantly agitated and air is forced into it. This promotes the rapid growth of aerobic microbes into fl

Vedclass · Accepted Answer

By constant agitation and forced aeration to promote the growth of aerobic microbes.

Vedclass · Answer

(B) During secondary treatment,the sewage is constantly agitated and air is forced into it. This promotes the rapid growth of aerobic microbes into flocs (masses of bacteria associated with fungal filaments). During their growth,these microbes consume the major part of the organic matter in the effluent. This significantly reduces the $BOD$ (Biochemical Oxygen Demand) of the effluent.

How is $BOD$ reduced in sewage treatment?

Similar Questions

What are flocs?

In secondary treatment,what do bacteria remove from the primary effluent?

Select the correct sequence with respect to sewage treatment.
$i$. Removal of suspended solid particles by primary treatment.
$ii$. Wastewater screening
$iii$. Anaerobic bacteria digest activated sludge.
$iv$. Treatment by flocs in aeration tank.
$v$. Grit settling

What gases are produced in anaerobic sludge digesters?

$BOD$ refers to

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