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Civil Engineering - Waste Water Engineering

Exercise : Waste Water Engineering - Section 7
6.
The formula used for determining flow velocities in sewers, is known as
Chezy's formula
Bazin's formula
Kutter's formula
Manning's formula.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
7.
The sewage treatment units in which anaerobic decomposition of organic matter is used, are called
imhoff tanks
trickling filters
sludge sedimentation tanks
none of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
8.
The spacing of man holes along a straight portion of a sewer is 300 m, the diameter of the sewer may be
0.9 cm
1.2 m
1.5 m
> 1.5 m.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
9.
The most efficient cross section of sewers in a separate sewerage system is
parabolic
circular
rectangular
new egged.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
10.
If a 2% solution of sewage sample is incubated for 5 days at 20°C and the dissolved oxygen depletion was found to be 8 mg/l. The BOD of the sewage is
100 mg/l
200 mg/l
300 mg/l
400 mg/l.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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