Continuous sedimentation of solid particles takes place in a liquid in a clarier-thickener unit (or settler); see Fig. 2.1. Such a process is used, for example, in waste water treatment and in the chemical and mineral industries. The purpose is to provide a clear liquid at the top and a high concentration of solids at the bottom. Discontinuities in the concentration prole are observed in reality and under normal operating conditions there is a large discontinuity in the thickening zone called the . . Previous studies of the clarier-thickener unit have usually been


Feb 21, 2014 (2 years and 8 months ago)


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