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A turbidity profile for the uniform and tapered flocculator was determined using this alum dose. The results are inconclusive- neither configuration produced an effluent with a lower turbidity than the raw water entering the flocculator. Furthermore in the graph shown below the flow rate was decreased to 13.6 gal/min producing an energy gradient of only 0.055 mW/kg throughout the uniform flocculator (Figure 2).
Figure 2: Uniform vs. Tapered Configuration. (12/14/08)
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