Rapid gravity filtration — Towards a deeper understanding

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    Abstract

    The process of deep-bed filtration has been studied using a Coulter Counter to analyse the size distribution of the suspension at various depths in the filter and at various times. The results show that an understanding of deep-bed filtration based merely on the mean size of a suspension is inadequate, and that the size distribution must be taken into account. A mathematical model to predict the effect of size distribution on removal efficiency has been developed, and a qualitative description of the model is given in the paper. A comparison between the experimental and predicted results is presented. The model predicts that in certain circumstances the efficiency of filtration may be improved by ‘dosing’ the feed with larger particles.

    Original languageEnglish
    Pages (from-to)32-35
    Number of pages4
    JournalFiltration and Separation
    Volume26
    Issue number1
    DOIs
    Publication statusPublished - Jan 1989

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