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Foam Filter Depth Variation
Experiment 1: 5 inch foam depth, 6 mm/s downflow velocity, 5 NTU influent, 1.5 mg/L alum dose
Experiment 2: 10 inch foam depth, 6 mm/s downflow velocity, 5 NTU influent, 1.5 mg/L alum dose
Experiment 3: 15 inch foam depth, 6 mm/s downflow velocity, 5 NTU influent, 1.5 mg/L alum dose
