Which of the following is used to digest the bacteria and fungi present in sewage sludge?

What is the full form of $STPs$?

If a large amount of sewage is discharged into a river,its $BOD$ will ......... .

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

How is $BOD$ reduced in sewage treatment?

Which processes are used to remove physical particulate matter from sewage water?
$(i)$ Filtration
$(ii)$ Chlorination
$(iii)$ Sedimentation
$(iv)$ Biological treatment