This paperpresents an automatic alum dosing control system in a water treatment process by using astreaming current monitor(SCM).The paper also describes a method to adjust PID parametersin detail.

• 本文介绍在水处理过程中，应用流动电流仪(SCM)控制混凝加矾量的自控系统，详述了该系统PID控制中的参数整定。