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Civil Engineering - Waste Water Engineering

Exercise : Waste Water Engineering - Section 1
21.
The detention time of a circular tank of diameter d and water depth H, for receiving the sewage Q per hour, is
Answer: Option
Explanation:
No answer description is available. Let's discuss.
22.
The dimensions of a rectangular settling tank are : length 24 m, width 6 m and depth 3 m. If 2 hour detention period for tanks is recommended, the rate of flow of sewage per hour, is
204 cu m
208 cu m
212 cu m
216 cu m
220 cu m.
Answer: Option
Explanation:
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23.
The screens are fixed
perpendicular to the direction of flow
parallel to the direction of flow
at an angle 30° to 60° to the direction of flow
none of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
24.
In primary sedimentation, the 0.2 mm inorganic solids get separated if specific gravity is
2.25
2.50
2.55
2.65
2.75
Answer: Option
Explanation:
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25.
Pick up the in-correct statement from the following :
Manholes are provided in sewer pipes at suitable intervals
Catch basins are generally provided in sewers for carrying drainage discharge
Inlets are generally provided in all sewers
None of these.
Answer: Option
Explanation:
No answer description is available. Let's discuss.
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