3. (27 pts) a. What is the sedimentation velocity (in m/s) of a 200 um diameter spherical particle with a density of 1.2
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3. (27 pts) a. What is the sedimentation velocity (in m/s) of a 200 um diameter spherical particle with a density of 1.2
3. (27 pts) a. What is the sedimentation velocity (in m/s) of a 200 um diameter spherical particle with a density of 1.25 g/cm in water at 10°C? b. To remove 85% of such particles, what an overflow rate (in m/s) is needed in a sedimentation tank? c. If the tank is an upflow clarifier (round shape from a top view) with a diameter: depth ratio of 3:1, and the flow to be treated is 120 cfs, what are the diameter (in m), depth (in m) and retention time (in hour) of the tank?
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