Waste Water Engineering
The drainage area of a town is 12 hectares. Its 40% area is hard pavement ( K = 0.85), the 40% area is unpaved streets (K = 0.20) and the remaining is wooded areas (K = 0.15). Assuming the time of concentration for the areas as 30 minutes and using the formula Ps = 900/(t + 60) the maximum run off is

0.15 cumec
0.10 cumec
0.20 cumec
0.12 cumec

ANSWER DOWNLOAD EXAMIANS APP

Waste Water Engineering
Nitrogen cycle of sewage, is

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

ANSWER DOWNLOAD EXAMIANS APP

Waste Water Engineering
Traps

Create symphonic action to increase the quick disposal of sewerage
Dissolve the foul gases
Are water seals which prevent the entry of foul gases
Are used to trap the rats entering sewers

ANSWER DOWNLOAD EXAMIANS APP