一种研究絮凝过程的新方法——透光脉动检测技术

采取电解法制备聚合絮凝剂可望通过控制过程的电化学与溶液化学条件，克服化学法制备中的缺陷，以获取最优的絮凝剂形态和效果。极化是影响电解制备的最主要问题之一。它将产生过电位，增加电解槽压，降低电流效率。

A NEW APPROACH FOR FLOCCULATION PROCESS THE MONITORING TECHNIQUE OF FLUCTUATION OF TRANSMITTED LIGHT

It has been expected that some problems in the preparation of flocculants may be overcome by the electrolysis method through controlling the electrical and solution conditions in the processes.However,we noted that the problem of polarization,including electrical,concentration difference and oxidizedfilm polarization,is the main factors affecting on the preparation efficiency.The polarization can produce extra potential,increase the electrolysis trough potential and decrease the current efficiency.By the theoretical and experimental analyses,we studied the property of polarization and the method for its minimization.It was found that the polarization could be minimized by selecting an electrolyte with suitable property and concentration and by controlling optimum electrode conditions.An electrolysis environment with low potential and high current density in PAC preparation was established,and a result of 80% Al b in the electrolysis products of PAC was got after the polarization was minimized.