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The floc terminal sedimentation velocity and the residual turbidity of flocculated suspension are important properties in a flocculator because all the particles having a terminal velocity lower than the capture velocity of the sedimentation tank are going to live the tank with the clear water causing the residual turbidity. (Rewrite this sentence. Make the distinction of what terminal sedimentation velocity represents. Put in the description you had in the other section here. With residual turbidity, you are measuring the anticipated performance you would have . Residual turbidity is the turbidity resulting from the flocs that failed to reach the capture velocity, which is 0.12 mm/s for the sedimentation tanks of the AguaClara plants. With residual turbidity is measured the anticipated performance of the plant if the effluent from the flocculator passed into the tube settlers without any other sedimentation process). The Spring 2009 team evaluated quantitatively the effect of shear velocity on these parameters. To do so, they used the flocculation residual turbidity meter (FRETA) developed by the AguaClara team and a data processor to analyze these parameters automatically ( see data acquisition)
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