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Waste Water Engineering

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

Oxygen
Nitrogen
Carbon dioxide
Hydrogen

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Waste Water Engineering
Fresh sewage is generally

A source of objectionable odour
Highly decomposed
Acidic
Alkaline

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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

Manning
Kutter
Bazin
Chezy

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Waste Water Engineering
The discharge per unit plan area of a sedimentation tank, is generally called

All of these
Over flow rate
Surface loading
Over flow velocity

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Waste Water Engineering
A nuisance is experienced in diluting water if dilution factor is less than

40
100
60
20

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Waste Water Engineering
The following is the physical characteristic of sewage

Turbidity
Odour
All listed here
Colour

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