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Waste Water Engineering

Waste Water Engineering
The underground sewers are more subjected to

Compressive force
Tensile force
Shearing force
Bending force

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Waste Water Engineering
Lead caulked joints are used for laying

I. pipes
Stone ware pipes
G.I. pipes
Earthenware pipes

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Waste Water Engineering
In a sludge digestion tank if the moisture content of sludge V1 litres is reduced from p1 % to p2 % the volume V2 is

[(100 – P1)/(100 + P2)] V1
[(100 + P2)/(100 – P1)] V1
[(100 – P1)/(100 – P2)] V1
[(100 + P1)/(100 – P2)] V1

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Waste Water Engineering
The small sewers are cleaned by

Flushing
Cane rodding
None of these
Wooden pills

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

Dilution
Oxidation
Irrigation
Purification

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Waste Water Engineering
Inter-distance between ventilation columns in a sewer line is kept

50 m to 100 m
150 m to 300 m
100 m to 150 m
25 to 50 m

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