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Answer the following questions regarding the ideal settling tank and particle settling [Pertinent data: water and particle densities are 1 and 1.2 g/cm3, respectively. Water viscosity is 0.01 g cm-1 sec-1.], assume the sedimentation is in laminar regime. (a) How long does it take for a particle with 60 μm diameter to settle for 3 meters of vertical distance? (b) If the settling tank has an design overflow rate of 25 m3/(m2 day), will the particle in part (a) be definitely removed, partially removed, or not removed? Why? (c) How do you increase the removal efficiency of a settling tank?

Answer the following questions regarding the ideal settling tank and particle settling [Pertinent data: water and particle densities are 1 and 1.2 g/cm3, respectively. Water viscosity is 0.01 g cm-1 sec-1.], assume the sedimentation is in laminar regime. (a) How long does it take for a particle with 60 μm diameter to settle for 3 meters of vertical distance? (b) If the settling tank has an design overflow rate of 25 m3/(m2 day), will the particle in part (a) be definitely removed, partially removed, or not removed? Why? (c) How do you increase the removal efficiency of a settling tank?

Fundamentals of Geotechnical Engineering (MindTap Course List)
Fundamentals of Geotechnical Engineering (MindTap Course List)
5th Edition
ISBN:9781305635180
Author:Braja M. Das, Nagaratnam Sivakugan
Publisher:Braja M. Das, Nagaratnam Sivakugan
Chapter6: Hydraulic Conductivity
Section: Chapter Questions
Problem 6.7P
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Answer the following questions regarding the ideal settling tank and particle settling [Pertinent data: water and particle densities are 1 and 1.2 g/cm3, respectively. Water viscosity is 0.01 g cm-1 sec-1.], assume the sedimentation is in laminar regime. (a) How long does it take for a particle with 60 μm diameter to settle for 3 meters of vertical distance? (b) If the settling tank has an design overflow rate of 25 m3/(m2 day), will the particle in part (a) be definitely removed, partially removed, or not removed? Why? (c) How do you increase the removal efficiency of a settling tank?
Transcribed Image Text:Answer the following questions regarding the ideal settling tank and particle settling [Pertinent data: water and particle densities are 1 and 1.2 g/cm3, respectively. Water viscosity is 0.01 g cm-1 sec-1.], assume the sedimentation is in laminar regime. (a) How long does it take for a particle with 60 μm diameter to settle for 3 meters of vertical distance? (b) If the settling tank has an design overflow rate of 25 m3/(m2 day), will the particle in part (a) be definitely removed, partially removed, or not removed? Why? (c) How do you increase the removal efficiency of a settling tank?
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