Question: You are designing a Type II Flocculant Settling Basin, using the following settling test information: % Suspended solids removed at indicated depth Time, min 1.5

You are designing a Type II Flocculant Settling Basin, using the following settling test information:

% Suspended solids removed at indicated depth
Time, min 1.5 ft 3.0 ft 4.5 ft 6.0 ft 7.5 ft
20 62
30 72 64 56
40 82 77 64 62 58
50 91 82 74 68 64
60 90 81 75 69
70 87 81 76
80 87 82

Determine the removal efficiency for a basin 10 feet deep with an overflow rate Vo= 10ft/hr.

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