1. For a flocculent suspension, determine the removal efficiency fir a basin 3 m deep with an overflow rate Vo equal to 3m/h using the laboratory settling data presented in the following table.
Percent suspended solids removed at indicated depth, m
Time, min
0.5
1.0
1.5
2
2.5
20
61
30
71
63
55
40
81
72
57
50
90
73
67
60
80
74
68
70
86
75