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Waste Water Engineering

Waste Water Engineering
In sewers the effect of scouring is more on

Bottom side
All sides
Top side
Horizontal side

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Waste Water Engineering
In a sludge tank, the gas mainly produced, is

Oxygen
Nitrogen
Carbon dioxide
Hydrogen

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Waste Water Engineering
In 1000 kg of sewage, the total solids approximate

5 kg to 7.5 kg
0.5 to 1.0 kg
1 kg to 2.0 kg
7.5 kg to 10 kg

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Waste Water Engineering
For house drainage minimum gradient is

1 in 400
1 in 80
1 in 10
1 in 60

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Waste Water Engineering
The ratio of minimum hourly flow to the average flow of sewage is

43833
43832
43834
43894

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Waste Water Engineering
The suitable cross-section of sewers to carry combined flow, is

Rectangular
Horse shoe shaped
Circular
Egg shaped

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