1. Following data collected from laboratory settling column with a total depth of 240cm and sampling ports spaced at 60cm intervals, the data given in the following table have obtained at temperature of 15C. The effective depth of the sedimentation basin under consideration is 1.8m. The initial concentration of SS was 430mg/l. In addition to the flocculants particles, the wastewater contains 100mg/l of iron phosphate particles with a sp.gravity of 1.5,P10=0.05mm and uniformity coefficient of 1.5 . At a temperature of 15C kinematic viscosity of water =1.139106m2/s, and at 30C it is 0.800106m2/s. (60 marks) (1) Plot \% flocculant particles removed for each depth v/s time. (2) Plot iso-removal curves for flocculant particles (3) Plot total \% removal v/s detention time for the combined suspension