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Civil Engineering - Waste Water Engineering

Exercise : Waste Water Engineering - Section 3
1.
The pH value of fresh sewage is usually
equal to 7
more than 7
less than 7
equal to zero.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
2.
The moisture content of a sludge is reduced from 90% to 80% in a sludge digestion tank. The percentage decrease in the volume of sludge, is
25%
50%
10%
5%.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
3.
Inter-distance between ventilation columns in a sewer line is kept
25 to 50 m
50 m to 100 m
100 m to 150 m
150 m to 300 m.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
4.
If q is the average sewage flow from a city of population P, the maximum sewage flow
Answer: Option
Explanation:
No answer description is available. Let's discuss.
5.
The factor responsible for purification of sewage in river is
Hydrology
Dissolved oxygen in water
Temperature
Turbulence
All the above.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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