水污染通常是指工业废水污染，农村水产养殖废水污染和生活污水污染。工业废水是在工业生产过程中产生的，例如造纸厂废水，染织厂废水，采矿和加工废水，这些废水对水质的污染最为严重。农村养殖污水的污染是指养猪场和养牛场。他们从农村环境中产生的污水很大。生活污水是指人们生活中产生的污水。尽管生活污水的影响很小，但如果直接排入河中，转化为城市的生活环境和渗入污染。水污染的处理已成为现代城市循环发展中的重要问题，并，为控制规模造成了很大的努力，为了改善水质，建造了许多新的污水处理厂。
改善污水处理厂的水质是一项系统工程，包括化学污染处理技术，污泥微生物处理技术，自动控制技术和监测系统技术。监控系统是污水处理厂的重要组成部分，有效的监控系统是确保污水处理厂设备自动运行的关键。The Industrial Internet of Things(IIoT) is of great significance to the improvement of industrial efficiency and quality, and to reduce industrial costs and resources. However, there are few openly-reported practical project applications based on the IIoT up to now. For legacy automation devices in traditional industry, it is especially challenging to realize the upgrading of industrial automation adopting the IIoT technology with less investment. Based on the practical engineering experience, this paper introduces the automation renovation of a sewage treatment plant. The legacy automation devices are upgraded by the central controller of a STM32 processor, and the WeChat Applet is used as the extended host computer. A set of remote monitoring and control systems of sewage treatment based on the IIoT is built to realize the wide-area monitoring and control of sewage treatment. The paper describes the field hardware system, wide-area monitoring and control application program, management cloud platform and security technologies in detail. The actual operation results show that the monitoring system has the requirements of high accuracy, good real-time performance, reliable operation and low cost.
目前，污水处理厂的监控大多基于本地监控，整个监控系统由上位机和PLC（可编程逻辑控制器）组成。操作员需要在本地进行数据监视和操作，而不能远程监视系统的操作。基于本地数据的传统污水处理厂监控系统支持了早期污水处理的自动化发展。但是，转移信息技术的发展，特别是工业物联网技术的发展，传统的污水处理厂监控系统在人工成本和数据可用性方面显示出局限性，无法充分发挥多终端共享和充分利用优势。数据利用。
考虑到传统污水处理厂的监督局限性，此处以一个实际的污水处理厂为例，说明如何利用工业物联网技术经济地实现工业自动化的升级。污水处理厂的自动化系统已获得有效升级，具有广域监视和控制功能。本文将详细介绍转换和升级过程。
With the development of urbanization in various countries, the pollution of water resources is becoming more and more serious. The water pollution usually refers to industrial waste-water pollution, rural aquaculture waste-water pollution and domestic sewage pollution. Industrial waste water is produced in the process of industrial production, such as paper mill waste water, dyeing and weaving plant waste water, mining and processing waste water, which has the most serious pollution to the water quality. The pollution of rural breeding sewage refers to pig farms and cattle farms. The sewage produced by them from the rural environment is very big. The domestic sewage refers to the sewage produced in the process of people’s life. Although the impact of domestic sewage is small, if it is directly discharged into the river, it will cause pollution to the living environment and drinking water of the city.The treatment of water pollution has become an important issue in the current urban recycling development, and has been paid attention to by various regions . In recent years, more efforts have been made to control water resources, a large number of new sewage treatment plants have been built to improve water quality.
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