Depth of tank, H = 14^ = 2 92 m. Add freeboard of 0.3 m

Actual depth of tank = 2.92 + 0.3 = 3.22, say 3.3 m Dimension for each tank: diameter = 30 m, depth = 3.3 m Ans nD 2 92)

Actual detention time = /ow^m^m = (n ¿o^^m^m = 2.49 h (Qpks /3)(60)(60) (0.69/3)(60)(60)

Note: The freeboard of 0.3 m does not hold water; thus, 2.94 m is used in the calculation.

Now, determine the amount of recirculation required at minimum flow. V - O t

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