A plain sedimentation tank is to be designed to treat 3 ML (million liters) of water per day. The detention period is 3 hours, the depth of the tank…

A plain sedimentation tank is to be designed to treat 3 ML (million liters) of water per day. The detention period is 3 hours, the depth of the tank is 3 m and the length to width ratio is 3 : 1. Determine: (i) the dimensions of the tank, (ii) the surface overflow rate (SOR) and (iii) whether a particle having a settling velocity of 0.03 cm/s will be completely removed in the tank.