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Sleepy Hollow has an existing horizontal-flow sedimentation tank with an overflow rate of 17 m 3...

Sleepy Hollow has an existing horizontal-flow sedimentation tank with an overflow rate of 17 m 3 /d · m 2 . What percentage removal should be expected for each of the following particle settling velocities in an ideal sedimentation tank: 0.1 mm/s, 0.2 mm/s, and 1 mm/s??

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Answer #1

Overflow rate is given as

Particles having settling velocity greater than overflow rate will be 100 % removed while other's having settling velocity less than overflow rate will be removed in the proportion of settling velocity compared to overflow rate

Percentage of particle removed is given as

= 50.81 %

Percentage of particle removed = 100 %

Percentage of particle removed = 100 %

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