"基于PLC的工业污水处理控制系统设计及实施"

本篇论文主要针对中国污水处理控制系统的现状，提出了基于PLC的工业污水处理系统的设计。现阶段我国的污水处理系统自动化水平较低，存在安全性低、管理不当、效率低等问题，与世界标准相比有明显差距。其中，曝气过程控制、数据通讯和监控管理是亟待解决的主要问题。针对这一问题，本文通过研究设计了一套基于PLC控制的污水处理系统。首先介绍了污水处理的基本工艺和流程，并结合PLC控制系统的硬件结构及设计、工作原理，说明了在污水处理过程中PLC的应用。在根据污水处理要求设计设备的电器控制与自动控制线路的基础上，按照工艺要求设计了PLC控制系统，包括PLC的选型、系统资源配置以及编制PLC程序。通过这一设计，可以有效解决我国污水处理系统自动化水平低、成本居高不下、处理水质不稳定等问题，具有重要意义。同时，关键词包括污水处理、PLC、工艺流程等。 Overall, the topic of this thesis is the design of an industrial wastewater treatment control system based on PLC. The current level of automation in China's sewage treatment system is relatively low, with issues such as low security, improper management, and low efficiency. There is a significant gap compared to international standards. The aeration process control, data communication, and monitoring and management are the main problems that need to be addressed. To address this issue, this paper proposes a design of a wastewater treatment system based on PLC. It first introduces the basic process and flow of wastewater treatment and combines the hardware structure and design, working principle, and application of PLC in the process. Based on the design of the electrical control and automatic control circuit of the equipment according to the requirements of wastewater treatment, the PLC control system is designed according to the process requirements, including PLC selection, system resource configuration, and PLC program development. This design effectively addresses the low level of automation, high costs, and unstable water quality in China's sewage treatment systems, and is of great significance. The keywords include wastewater treatment, PLC, process flow, and so on.