Abstract

An analytical model of time-dependent settling in a suspension of finite depth is presented. The model correctly predicts the decrease in total concentration of three suspensions of fine sediments undergoing single-grain settling. The changes in grain-size spectra, in which decrease in concentration occurs mainly in sizes larger than the modal size, are also predicted. The model is used with data from the settling of flocculated suspensions to show that the rate of flocculation is approximately proportional to the second power of the concentration.

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