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In this experiment, we seek to determine what direct impact the diameter of the tube settler has on sedimentation efficiency. From the experiment detailed on the previous page, we were able to identify a range of capture velocities that produce low turbidity effluent regardless of tube diameter. For this experiment, we chose three capture velocities within this range and adjusted the length of the tube settlers to satisfy this velocity. Upflow velocity through the tubes was held constant. Recall that

{latex}\large\[V_c  = \frac{{dV_{up} }}{{L_{tube} \sin (\alpha )\cos (\alpha ) + d}}\]{latex}

is the capture velocity equation.

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