一、前言在常规水处理工艺中,投加化学药剂进行混凝是最关键的环节。混凝效果的优劣直接影响后续环节乃至整个处理工艺的运行效果,而混凝剂的投加量是影响混凝效果的决定性因素,且药剂费用在净水成本中占很大的比例。因此,及时准确地调整混凝剂投加量以适应原水水质及运行条件的变化,达到以经济合理的药耗取得满意的净化效果,是水处理工作者长期奋斗的目标之一。混凝剂 I. Introduction In the conventional water treatment process, adding chemicals for coagulation is the most crucial part. The merits of coagulation effect directly affect the operation of the follow-up part of the whole process as well as the operation effect, and coagulant dosage is the decisive factor affecting the coagulation effect, and pharmaceutical costs account for a large proportion of the cost of water purification. Therefore, timely and accurate adjustment of dosage of coagulant to adapt to changes in raw water quality and operating conditions to achieve a satisfactory cost-effective purification of drug consumption, water treatment workers is one of the long-term struggle. Coagulant