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Domestic sewage of large cities...

Domestic sewage of large cities

A

when treat in STPs does not really require the aeration step as the sewage contains adquate oxygen

B

has very high amounts of suspended soluble and dissolved salts

C

has a high BOD as it contains both aerobic and bacteria

D

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

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Verified by Experts

The correct Answer is:
D
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