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Waste Water Engineering

Waste Water Engineering
The following is the physical characteristic of sewage

All listed here
Colour
Odour
Turbidity

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Waste Water Engineering
During purification process of sewage the gas given off, is

All listed here
Carbon dioxide
Hydrogen
Ammonia

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Waste Water Engineering
As compared to fresh river water, sea water contains oxygen

10% less
10% more
20% more
20% less

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Waste Water Engineering
If the side of a square sewer is 1000 mm, the diameter of a hydraulically equivalent circular section, is

1065 mm
1095 mm
1075 mm
1045 mm

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Waste Water Engineering
The width of a rectangular sewer is twice its depth while discharging 1.5 m/sec. The width of the sewer is

0.68 m
0.88 m
1.36 m
1.76 m

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Waste Water Engineering
During preliminary treatment of a sewage

All listed here
Floating materials are removed by screening
Girt and sand are removed by girt chambers
Oil and grease are removed from skimming tanks

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