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Civil Engineering - Waste Water Engineering

Exercise : Waste Water Engineering - Section 3
46.
Sewer pipes are designed for maximum discharge with 25% to 33% vacant cross-sectional area for
unexpected large scale infiltration of stream water
unexpected increase in the population
under estimates of maximum and average flows
All of the above.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
47.
5 days-biochemical oxygen demand (BOD5) is taken at a temperature of
0°C
15°C
20°C
25°C.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
48.
Water content of sewage is about
90%
95%
99.9%
9.9%.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
49.
Imhoff cone is used to measure
total organic solids
total solids
total in organic solids
settleable solids.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
50.
For a grit chamber, if the recommended velocity of flow is 0.2 m/sec and detention period is 2 minutes, the length of the tank, is
16 m
20 m
24 m
30 m.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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