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Figure 7.45 Effect of the mixed liquor recirculation ratio ((3) on the concentrations at the end of a cycle in an SBR operated in a manner to mimic the performance of the MLE system shown in Figure 7.28. For comparison, the dashed curves represent the concentrations in the aerobic (second) tank of that system. They are the same as the curves in Figure 7.31. With the exception of the recirculation ratio, the characteristics were the same as those listed in Figure 7.43.

0.4 0.6 0 8 1.0 0.0 0.2 0 4 0.6 0.8 1.0 Aerobic Fraction Aerobic Fraction

Figure 7.46 Effect of the fraction of the fill plus react period that is aerobic (aerobic fraction) on the concentrations at the end of a cycle in an SBR operated in a manner to mimic the performance of the MLE system shown in Figure 7.28. For comparison, the dashed curves represent the concentrations in the aerobic (second) tank of that system. They are the same as the curves in Figure 7.33. With the exception of the aerobic fraction, the characteristics were the same as those listed in Figure 7.43.

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