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WASTE WATER ENGINEERING

Waste Water Engineering
The factor responsible for purification of sewage in river is

Temperature
Dissolved oxygen in water
All listed here
Hydrology

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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
25 to 50 m
100 m to 150 m

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Waste Water Engineering
The most efficient cross section of sewers in a separate sewerage system is

Rectangular
New egged
Circular
Parabolic

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Waste Water Engineering
The most efficient cross-section of sewers in a combined sewerage system is

New egged
Rectangular
Parabolic
Circular

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Waste Water Engineering
The minimum diameter of a sewer is kept

15 cm
25 cm
10 cm
20 cm

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