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

Figure 1: pC* vs Time

Figure 2: Turbidity vs Time

Experiment 3: 15 inch foam depth, 6 mm/s downflow velocity, 5 NTU influent, 1.5 mg/L alum dose