Waste Water Engineering
For efficient working of a sewer, it must be ensured that

Neither (A) nor (B)
A maximum velocity of 0.90 m/sec, is maintained at its maximum flow
Minimum velocity of 0.45 m/sec, is maintained at its minimum flow
Both (A) and (B)

ANSWER DOWNLOAD EXAMIANS APP

Waste Water Engineering
Nitrogen cycle of sewage, is

Liberation of ammonia-formation of nitrites-formation of nitrates-liberation of nitrogen
Formation of nitrates-formation of nitrites-liberation of nitrates-liberation of nitrates
Liberation of nitrogen-formation of nitrates-formation of nitrites-liberation of ammonia
Liberation of nitrogen-liberation of ammonia-formation of nitrites- formation of nitrates

ANSWER DOWNLOAD EXAMIANS APP

Waste Water Engineering
Skimming tanks are

Improved version of grit chambers
Tanks provided with self- cleansing screens
Used to remove the grease and oil
Those from which sludge is skimmed out

ANSWER DOWNLOAD EXAMIANS APP