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The domestic sewage in large cities...

The domestic sewage in large cities

A

is processed by aerobic and then anaerobic bacteria in the secondary treatment in Sewage Treatment Plant (STPs)

B

When treated in STPs does not really require the aeration step as the sewage contains adequate oxygen

C

has very high amounts of suspended solids and dissolved salts

D

has a high BOD as it contains both aerobic and anaerobic bacteria.

Text Solution

Verified by Experts

The correct Answer is:
A
In waste water treatment plant, the secondary treatment includes the biological treatment where the aerobic bacteria and anaerobic bacteria fungi are involed
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