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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 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 . (You describe this in more detail in another page. Please combine these sections so that you only have to write this once( see data acquisition)
Our goal for these first experiments was to familiarize ourselves with the apparatus and the data processor (MathCAD file) made by the previous team (Spring 2009) and to try to replicate one of their last experiments to make sure that the apparatus and the MathCAD file were working properly. (You already stated this in your procedure section on the same page. Avoid repeating yourself.)
Table 1: Parameters for the Fall 09 experiment
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