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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.
Figure 1. Effluent Turbidity vs. Time, floc blanket on low, alum dose 35 mg/L.
Figure 2. Effluent Turbidity vs. Time, floc blanket on high, alum dose 35 mg/L.
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