Extracted text: 3/7/2021 Water Treatment I-Third class Second semester Q1) The data in the table below used to design a sedimentation tank with depth=4m and detention time= 2hr, the influent flow is 2000L for each minute. 0.01 Settling Velocity(cm/sec) Weight fraction Greater 0.004 0.02 0.03 0.04 0.05 0.063 0.085 0.12 98 95 8 6 4 3 1 0.5 than size % Determine the overall removal efficiency for this tank, s.g. of particle=1.2 , u=0.89x10-³N.s/m². Use Ax=0.1.