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Waste Water Engineering

Waste Water Engineering
Water content of sewage is about

0.9
0.999
0.95
0.99

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Waste Water Engineering
A rain sanitary sewer is constructed to carry

Sanitary sewage
Surface water
Ground water
Storm sewage

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Waste Water Engineering
The gas which may cause explosion in sewers, is

Ammonia
Carbon monoxide
Methane
Carbondioxide

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Waste Water Engineering
15 cumecs, the depth d and width are related by For drains up to

B = 0.5 d
d = 0.2 B
B = 0.2 d
d = 0.5 B

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Waste Water Engineering
The maximum diameter of sewers adopted in the designs is

4.0 m
2.0 m
1.0 m
3.0 m

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Waste Water Engineering
The density of population over 40 hectares is 250/hectare. If water supply demand per day is 200 litres and sewage discharge is 80% of water supply, the sewage flow in sewers of separate system, is

0.05556 cumec
0.0556 cumec
0.05552 cumec
0.05554 cumec

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