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An alum dose of 35 mg/L is considered to be a slight underdose. The below graphs show the effluent turbidity vs. time for the same capture velocities used for Experiment 1.
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Figure 1. Effluent Turbidity vs. Time, floc blanket on low, alum dose 35 mg/L.



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Figure 2. Effluent Turbidity vs. Time, floc blanket on high, alum dose 35 mg/L.

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