戚翠战1，2，韩世成2，曹广斌2，周煊亦1，2，蒋树义2，陈中祥2
（1 上海海洋大学工程学院，上海 201306；2 中国水产科学研究院黑龙江水产研究所，哈尔滨 150070）

摘要：为解决工厂化循环水养殖中臭氧控制的精准性，研究探索了采用PLC实现PID臭氧浓度控制的3种方法，并结合生产实际，采用PLC的PID指令实现消毒时臭氧浓度的PID控制。通过MATLAB/simulink建立臭氧浓度控制模型并仿真，获得超调量精度为2.5%的精准控制效果。经过试验验证得出的控制曲线与仿真曲线的控制效果基本一致，处理过程臭氧反应器中的臭氧浓度能够持续保持在0.18mg/L，鱼池臭氧残留在0.008 mg/L以下，达到了浓度控制的要求。试验表明，控制系统设计合理、有效。基于PLC的PID控制系统设计为臭氧在工厂化水产养殖水处理中的广泛应用提供了技术支持。

关键词：循环水；水产养殖；水处理；臭氧浓度；PID控制

PID control of ozone concentration in water treatment
of recirculating aquaculture system
QI Cuizhan 1，2，HAN Shicheng2，CAO Guangbin2，ZHOU Xuanyi1，2，JIANG Shuyi2,，CHEN Zhongxiang2
(1.Shanghai Ocean University, Shanghai 201306, China;
2. Heilongjiang River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Harbin 150070，China )

Abstract：Due to current method of controlling ozone concentrations cannot reach precise control requirements, limiting the application of ozone in industrialized aquaculture. This paper describe 3 PID method to control water ozone concentrations based on PLC, To realize the PID control, detail PLC ladder program was designed and the control system was set up. With MATLAB / Simulink, ozone control model and simulation was established. Simulation result shown that the overshoot of control system was 2.5% (<10%) and was in compliance with control requirements. To identify its practical performance, the PID control was tested in a recirculating aquaculture system. The test result shown that the variation curve of dissolved ozone concentration was in consistent with the simulation curve. The ozone concentration in the reactor could be maintained at 0.18mg/L, and the residual concentration in fish culture tank is below 0.008mg/L, which indicating that the designed control system is reasonable and effective. PID control system based on PLC can provide precise control technology for ozone dissolved concentration control in recirculating aquaculture water treatment.

Key words：Recirculating system; aquaculture, water treatment; ozone concentration; PID control

（来源：《渔业现代化》2014,41(2):18-22）