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Waste Water Engineering

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

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

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Waste Water Engineering
In very first stage of decomposition of the organic matter in sewage

Carbondioxide is formed
Ammonia is formed
Nitrites are formed
Nitrates are formed

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Waste Water Engineering
A sewer running partially full and hurried with back filled, fails in compression due to

Weight of the back fill
Weight of the pipe
All listed here
Superimposed traffic loads

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Waste Water Engineering
In sewage having fully oxidised organic matter, the nitrogen exists in the form of

Nitrites
Nitrates
Aluminoid nitrogen
Free ammonia

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Waste Water Engineering
The asbestos cement pipes are generally laid

Vertically
Horizontally
At an angle of 60°
At an angle of 30°

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Waste Water Engineering
The minimum diameter of sewer to be adopted is

10 cm
25 cm
15 cm
12.5 cm

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