Question: 2 1 - 3 . WEF ( 1 9 9 8 ) recommends that the clarifier linear flow - through velocity be limited to 0

21-3. WEF (1998) recommends that the clarifier linear flow-through velocity be limited to 0.020ms
to prevent scour. Using a for sticky particles and a Darcy-Weisback friction factor of 0.03, estimate
the specific gravity of a 200m diameter particle that will be scoured at the recommended velocity.
2 1 - 3 . WEF ( 1 9 9 8 ) recommends that the

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