【Daily Question】Utilities - Water Supply and Drainage - 20190308
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This post was last edited by hesonchang214 on 2019-3-8 at 16:17. When designing a horizontal sedimentation tank for a water treatment plant, the following parameters are generally appropriate. () A: Sedimentation time of 90 minutes, effective water depth of 3.2 m, aspect ratio of 5, length-to-depth ratio of 20. B: Sedimentation time of 45 minutes, effective water depth of 3.2 m, aspect ratio of 5, length-to-depth ratio of 20. C: Sedimentation time of 90 minutes, effective water depth of 2.5 m, aspect ratio of 5, length-to-depth ratio of 10. D: Sedimentation time of 4 hours, effective water depth of 4.5 m, aspect ratio of 5, length-to-depth ratio of 10. Answer: A
The settlement time for B is 45 minutes, the effective water depth is 3.2 m, the length-to-width ratio is set at 5, and the length-to-depth ratio is set at 20
The D sedimentation time is 4 hours, the effective water depth is 4.5 m, the length-to-width ratio is set at 5, and the length-to-depth ratio is set at 10
The settling time is 90 minutes, the effective water depth is 3.2 m, the length-to-width ratio is set at 5, and the length-to-depth ratio is set at 20
The settling time is 90 minutes, the effective water depth is 3.2 m, the length-to-width ratio is set at 5, and the length-to-depth ratio is set at 20
The settling time is 90 minutes, the effective water depth is 3.2 m, the length-to-width ratio is set at 5, and the length-to-depth ratio is set at 20