造纸废水zeta电位的实时在线监测系统的研究

摘要

The real time and online monitoring system for zeta potential of wastewater in papermaking process is studied. With help of the device using streaming potential method to measure zeta potential, and by adopting PLC and WinCC, the real time online monitoring system based on zeta potential is bui various indexes and zeta potential values in wastewater handling process are collected and displayed in real time. Within the range of allowable error, the system can be used in flocculation section for guiding the put-in amount of the flocculant, thus the target of optimizing flocculant is reached. In addition, the system features excellent man machine interface. The system possesses good applicable prospect in flocculation section of industrial fields.%对造纸废水中zeta电位的实时在线监测系统进行了研究。利用流动电位法测定废水中zeta电位的装置，采用PLC和WinCC搭建一个基于zeta电位的实时在线监控系统，实时采集并显示废水处理中各种指标和zeta电位值。在误差允许范围内，该系统可以很好地应用到絮凝工段，指导絮凝剂的投放量，达到优化絮凝剂的目的。系统具有良好的人机界面，在工业现场絮凝工段具有很好的应用前景。