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 |
| A. |
unexpected large scale infiltration of stream water | | B. |
unexpected increase in the population | | C. |
under estimates of maximum and average flows | | D. |
All of the above. |
Answer: Option D
Explanation:
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| 47. |
5 days-biochemical oxygen demand (BOD5) is taken at a temperature of |
Answer: Option C
Explanation:
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| 48. |
Water content of sewage is about |
Answer: Option C
Explanation:
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| 49. |
Imhoff cone is used to measure |
| A. |
total organic solids | | B. |
total solids | | C. |
total in organic solids | | D. |
settleable solids. |
Answer: Option D
Explanation:
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| 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 |
Answer: Option C
Explanation:
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