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                                                                                       Figure Figure 1 Floc breakup installation

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                                                          Figure  Figure 2  Comparative  results of residual turbidity vs. alum dose  

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The Predictive model is supposed to be updated based on the experimental data after floc breakup device was installed. An approach to develop this model is to insert trend line to our existing experimental data and pick the best relationship for turbidity removal versus alum dose curve. Figure 3 indicates that the logarithmic type fits the data the best with a regression equation of y = 0.2062x -0.0078 and a relation coefficient of 0.9931. 

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                                                         Figure 3 Turbidity removal over a range of alum dose with trend line

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