污水处理控制系统的设计与应用

发布时间：2018-07-10 04:22

本文选题：污水处理 + PLC控制系统　；参考：《东北石油大学》2017年硕士论文

【摘要】：在经济大跨步发展时代,当今社会不得不面对严重污染的水资源现状,通过一系列的水污染防治项目的建立实施,水污染的现状已得到很大的环节和改善,但相较于国外的先进技术,对自动控制系统的研究我们还有很长的路要追赶。污水处理不仅对环境起到了改善的作用,并且污水经过处理达到排放标准后,实现水资源的再次使用,从而水资源使用效率最大化的目的。研究一套合理的污水处理自动控制系统,首先要满足国家的排放要求,并且要用较低的运行费用,来达到较好的处理效果。自动化程度较高的控制系统也可以为后期工业生产中的维护环节节约成本。本文是在对污水处理系统进行充分理论研究与分析的基础上,依据国家《污水综合排放标准》GB8978-1996对污水处理系统的相关规定,结合朝阳分享食品厂的污水处理的要求进行的《污水处理控制系统的设计与应用》。自动控制系统的控制效果直接关系到污水处理的品质与速度。通过对SBR污水处理工艺的研究分析,本系统应用工控机作为上位机,采用西门子PLC-300作为控制器,并组建PROFIBUS网络将上下位机联系起来。在上位机中,通过WinCC软件组态制作了操作与显示画面,在下位机中,利用西门子公司的Step7编程软件完成了污水处理系统中的除污机、曝气机、滗水器等设备的自动起动、自动停止、故障报警、参数显示等程序的编写工作。最后利用S7-PLCSIM软件对编写的程序进行了仿真,结果表明程序能满足污水自动控制系统的要求。在现场试调试运行中,污水处理控制系统自动控制部分满足了安全性、可靠性的要求,达到了预期效果。
[Abstract]:In the era of great economic development, the society has to face the serious pollution of water resources. Through the establishment and implementation of a series of water pollution prevention and control projects, the status quo of water pollution has been greatly improved. But compared with foreign advanced technology, we still have a long way to catch up with the study of automatic control system. Sewage treatment not only improves the environment, but also realizes the reuse of water resources after the sewage treatment reaches the discharge standard, so as to maximize the efficiency of water use. To study a reasonable sewage treatment automatic control system, first of all, to meet the national discharge requirements, and to use lower operating costs to achieve a better treatment effect. The control system with high degree of automation can also save the cost for the maintenance link in the later industrial production. This paper is based on the theoretical research and analysis of sewage treatment system, according to the relevant regulations of National Integrated sewage discharge Standard GB8978-1996. The Design and Application of sewage treatment Control system combined with the requirement of sewage treatment in Chaoyang shared Food Plant. The control effect of automatic control system is directly related to the quality and speed of sewage treatment. Through the research and analysis of SBR wastewater treatment process, this system uses industrial control computer as upper computer and Siemens PLC-300 as controller, and establishes PROFIBUS network to connect upper and lower computers. In the upper computer, the operation and display pictures are made by the WinCC software configuration. In the lower computer, the automatic start of the sewage treatment system, such as decontamination machine, aerator, decanter and so on, is completed by using the Step7 programming software of Siemens Company. Automatic stop, fault alarm, parameter display and other programming work. Finally, the program is simulated by S7-PLCSIM software, and the results show that the program can meet the requirements of the sewage automatic control system. The automatic control of sewage treatment control system meets the requirements of safety and reliability, and achieves the desired effect.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：X703

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