The influent suspension to a settler with a concentration of 435 kg/m3 is formed of irregular particles with a sphericity of 0.6 and particle density 1250kg/m3 and water at 28 oC. Calculate the size of the separated particles, if the settler has a capacity of 3 kg/(m2 s)-1. Note: [Capacity=(sedimentation velocity) (solid concentration)

Drag coefficient ( C D ) and particle Reynolds Number ( R e p ) for different sphericity ( )