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在电膜组件中间加设网状膜 ,在外加电场作用下 ,胶体粒子发生电泳现象 ,通过测量胶体粒子浓度的变化可计算出胶体粒子的 ξ电位 .将装置改设为立式 ,可以大大减少胶体凝聚的发生 ,从而提高了电膜法测量 ξ电位的精度 ,扩大了适用范围 ,同时改进了具体的计算与测量方法 .该法对高岭土胶体 ξ电位的测量实验表明 ,立式电膜法测量 ξ电位可靠性较高、且无须使用大型仪器
In the middle of the membrane module, a mesh membrane is added, and under the action of an applied electric field, the colloid particles undergo electrophoresis. By measuring the change of colloidal particle concentration, the zeta potential of the colloidal particles can be calculated. Changing the device to vertical can greatly reduce Colloid agglomeration occurs, thus improving the accuracy of measuring the zeta potential by electrofilm method, expanding the scope of application, and improving the specific calculation and measurement methods.The measurement of zeta potential of kaolin colloids shows that the vertical electro- The zeta potential is more reliable and requires no large instrumentation