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Waste Water Engineering

Waste Water Engineering
If is the rugosity coefficient, is the bed slope of sewer, the velocity of flow in m/sec may be obtained by the formula V = (1/n) r2/3 s1/2 evolved by

Bazin
Kutter
Manning
Chezy

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Waste Water Engineering
For trunk and out-fall, the type of sewers generally used, is

Circular shaped
Horse shoe shaped
Parabolic shaped
Standard egg shaped

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Waste Water Engineering
For the survival of fish in a river stream, the minimum dissolved oxygen is prescribed

10 ppm
3 ppm
5 ppm
4 ppm

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Waste Water Engineering
Disposal to sewage in large cities, is done in

Irrigation
Oxidation
Dilution
Purification

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Waste Water Engineering
Drop manholes are the manholes

Without entry ladders
Without manhole covers
Having drains at different levels
With depths more than 3.5 m

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Waste Water Engineering
The flow velocity in detritus tanks is

0.05 m/sec
1.25 m/sec
None of these
0.09 m/sec

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