A Semi-Empirical Model to Estimate Maximum Floc Size in a Turbulent Flow.

The linear increase between the initial concentration of solids C si and the velocity gradient corresponding to the minimum residual turbidity implies that floc cohesion and the interactions between the primary particles inside the flocs increase with the concentration of solids: (32) G τ m i n = 50.49 C S i + 435.97 , R 2 = 0.99 At 25 g/L and above 900 s −1 , the residual turbidity changed very little (near-stationary) while the floc size continued to evolve remarkably, showing a decreasing trend according to the velocity gradient applied (later discussed in Section 3.2.6 ).

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