Thickening batch flux curve

All the data to produce a batch flux curve, i.e. G-C, which is inqjortant design information for continuous thickener design procedures, can be obtained in the following... 

From the single-batch settling test data given in the previous exan le construct a batch flux curve. Determine the required area for continuous thickening from 3 to 15% by (a) the Yoshioka Construction and (b) by the Coe-Clevenger procedure. 

An interesting situation arises if it is desired to avoid the upward propagation of kinematic waves by moving the sediment downward at a rate such that the upward-propagating concentration differences are stationary relative to the container walls. The downward motion of the sediment is obtained by its continuous withdrawal uniformly over the settler cross section. The process is termed continuous thickening. The continuous sedimentation process is thus composed of the batch gravitational flux and solid convective flux pu. This is illustrated in Fig. 5.4.7, where the total solids flux curve is the sum of the batch flux and the convective flux the shape of the curve of Fig. 5.4.5 illustrates the batch flux (Petty 1975). 

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