What is the correct sequence of processes in | vedclass

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(C) The process of sewage treatment involves several stages:$1$. Primary treatment: This involves physical removal of particles through filtration (se

Vedclass · Accepted Answer

Filtration $	o$ Sedimentation $	o$ Aerobic bacteria $	o$ Anaerobic bacteria

Vedclass · Answer

(C) The process of sewage treatment involves several stages:$1$. Primary treatment: This involves physical removal of particles through filtration (sequential filtration) and sedimentation (grit removal).$2$. Secondary treatment (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 vigorous growth of useful aerobic microbes into flocs.$3$. After aerobic treatment,the effluent is passed into a settling tank where the bacterial 'flocs' are allowed to sediment. This sediment is called activated sludge.$4$. $A$ small part of the activated sludge is pumped back into the aeration tank,and the remaining major part is pumped into large tanks called anaerobic sludge digesters,where anaerobic bacteria digest the bacteria and fungi in the sludge.Therefore,the correct sequence is Filtration $	o$ Sedimentation $	o$ Aerobic bacteria $	o$ Anaerobic bacteria.

What is the correct sequence of processes in a sewage treatment plant?

Similar Questions

How is primary sludge formed?

$A$: More sewage treatment plants are required in proportion to the human population.
$R$: Biogas,which is a fuel energy,is produced in $STPs$.

Sewage or municipal waste should not be directly passed into rivers,streams and other water bodies because
$I.$ it contains human excreta and other organic waste
$II.$ it contains a number of pathogenic microbes
Which of the statement given above is/are correct?

Given below are two statements: Based on them,select the correct option.
Statement $I$: Activated sludge is obtained in the grit chamber.
Statement $II$: Activated sludge is pumped into an anaerobic digester.

Which of the following statements regarding sewage is correct?

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