Sedimentation

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Applications

‣Stoke’s Law can be used to determine the

surface area of a settling tank

‣Set the critical velocity equal to the settling

velocity of the smallest particle

‣The overflow rate is equal to the flow rate into the

tank divided by the surface area

‣Setting the overflow rate equal to the critical

settling velocity allows time to capture smallest

particles of interest

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Applications ‣Stoke’s Law can be used to determine the surface area of a settling tank ‣Set the critical velocity equal to the settling velocity of the smallest particle ‣The overflow rate is equal to the flow rate into the tank divided by the surface area ‣Setting the overflow rate equal to the critical settling velocity allows time to capture smallest particles of interest

Applications OFR = v = c Q A ‣OFR = over flow rate ( m / s or ft / s ) ‣v c = critical settling velocity ( m / s or ft / s ) ‣Q Q = the flow rate into the basin ( m3 / s or cfs) ‣A A = the surface area of the basin (m 2 or ft 2 )

Page 1 and 2: Sedimentation University Curriculum
Page 3 and 4: Sedimentation ‣Sedimentation is t
Page 5 and 6: Examples of Settling Types Discrete
Page 7 and 8: Types of Sedimentation ‣ In flocc
Page 9 and 10: Types of Sedimentation ‣Compressi
Page 11: Sedimentation Rate v p = 2 ( ρ −

Sedimentation

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