Design and Simulation of an Ozone Catalytic Oxidation System Based on Programmable Logic Controller

Owing to the booming industry, China has witnessed a sustained growth in industrial water consumption.Meanwhile, a huge amount of industrial wastewater is discharged each year, posing a serious challenge to wastewater treatment.To solve the problem, this paper adopts an ozone catalytic oxidation (OCO), a novel treatment technology for industrial wastewater, and designs a proportional-integral-derivative (PID) control method for the OCO system, based on programmable logic controller (PLC).The design of upper and lower computers was introduced in details.Simulation results show that the proposed method realized the stable control of the potential of hydrogen (pH) in the OCO system.Our design improves the reaction efficiency in wastewater treatment, and overcomes the low automation and complex control of traditional OCO system.The research results provide a theoretical reference for the promotion of the OCO technology in various fields.