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    Please use this identifier to cite or link to this item: http://ir.cnu.edu.tw/handle/310902800/23481


    標題: Technical note Ionic strength in deep bed filtration
    作者: JING SONG CHANG
    S. VIGNESWARAN
    關鍵字: deep bed filtration
    ripening period
    particlc collcctor
    ionic strength
    zeta potentail
    specific conductance
    bulk stress
    日期: 1991
    上傳時間: 2011-01-04 16:45:04 (UTC+8)
    摘要: The removal efficiency of particlcs in deep bed filtration depends on both transport and attachment mechanisms of particles. The particle attachment mechanisms depend mainly on chemical characteristics of aqueous phase, suspended particles and filter media. In this study, two different suspensions were used to study the effect of ionic strength on the particle removal efficiency. The ionic strength of suspensins was varied by adding a known amount of sodium chloride. The removal efficiencies were related to ionic strength and zeta potentail. The clean filter bed efficiency and removal efficiency during the ripening period for various strengths were quantitatively related to the two model coefficients iuring the ripcning pcriod l`vr various strcngths werc quantitativcly relalcd to thc two model coethcicnls appering in the O'Melia-Ali model. These model coefficients represent the filter medium-particle and particle-particle attachments. This type of quantificaton of the effect of ionic strength in terms of filter efficiency is very useful in filter design and operation control.
    Appears in Collections:[嘉南學報] 17期 (1991)
    [環境工程與科學系(所)] 期刊論文

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