滤料表面电动电位的研究

Study on Zeta Potential of Filter Media

根据流动电位与表面ξ电位的关系研制了一套测定滤料表面ζ电位的装置,经测定计算出了常用六种水处理滤料的表面ζ电位。结果表明:磁铁矿、沸石、石英砂、陶粒砂、核桃壳、无烟煤表面ζ电位分别为-60.85mV、-25.45mV、-24.37 mV、-21.49 mV、-14.24mV、-14.17mV。用红外光谱分析说明了各种滤料表面ζ电位存在差异的原理。

According to the relationship between streaming potential and zeta potential of filter media, an apparatus for measuring zeta potential of filter media was designed and made. Based on measurement, zeta potential on six common filter media were figured out. Zeta potential value of magnetite,zeolite,quartz sand,haydite,walnut shell and anthracite were -60.85mV,-25.45mV,-24.37mV,-21A9mV,-14.24mV,-14.17mV respectively. FTIR illustrated the principle of diversity of zeta potential of filter media.