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Waste Water Engineering

Waste Water Engineering
In normal conditions, the period for sludge digestion, is

30 days
20 days
60 days
10 days

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Waste Water Engineering
A manhole is generally provided at each

Bend
All of these
Change of gradient
Junction

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Waste Water Engineering
A cylindrical ejector having its height 2 m fills after every 10 minutes with a peak sewage discharge of 0.0157 cumec. The diameter of the ejector chamber, is

2.45 m
2.40 m
2.50 m
2.30 m

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Waste Water Engineering
In sewers the gas generally found, is

Carbon dioxide (CO2)
All listed here
Hydrogen sulphide (H2S)
Methane (CH4)

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Waste Water Engineering
Boussinesq’s equation for ascertaining unit pressure at a depth on sewers due to traffic loads, is

pt = 2H3p/3 Z5
pt = 3H3p/2 Z5
pt = 2H3p/3 Z5
pt = 3H3p/2 Z5

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Waste Water Engineering
Kjeldahl nitrogen is a mixture of

All listed here
Ammonia and nitrogen
Nitrogen and organic nitrogen
Organic nitrogen and ammonia

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