云南矿山污水处理自动控制系统研究
发布时间：2018-12-09 20:16
【摘要】：污水处理过程是个多变量的复杂的控制过程,传统的污水处理厂的控制多以手动控制为主,加上常规的仪表控制,这种依靠人工经验的控制方式,出水质量不稳定,生产效率不高,能源利用率低。为了保证水处理的质量,降低污水处理的生产成本,必须采用先进的自动控制系统来控制污水的处理过程。本文矿山污水处理自动控制系统是以云南某矿山生活区污水处理站为背景,设计一个污水处理自动控制系统,污水的处理工艺是采用化学沉淀法和先进的CASS工艺,控制系统的结构采用工控机(IPC)+可编程逻辑控制器(PLC)的DCS控制模式,该结构功能完整,组态较为灵活,扩展性好。污水处理的pH和浓密池底流浓度的控制环节,采用PID控制算法,保证出水质量的稳定。控制系统的上位机监控软件采用WinCC7.0,下位机采用西门子S7-300 PLC,使用西门子STEP7编程设计下位机PLC的控制程序。本文首先在讨论分析污水处理的工艺方法基础上,描述了矿山生活区污水处理的工艺流程。接着详细介绍了S7-300 PLC和编程软件STEP7。结合工艺的基础上给出了总体控制方案,设计了系统的结构、硬件配置、编写控制程序和设计上位监控软件。调试控制系统,将系统投入实际运行。控制系统运行后,经该系统处理后的水质达到国家规定的排放标准,性能稳定,完全满足了设计要求。文章最后对污水处理自动控制系统的发展方向提出了一些展望。
[Abstract]:The process of sewage treatment is a multivariable and complex control process. The traditional sewage treatment plant control is dominated by manual control, combined with conventional instrument control, which relies on artificial experience to control the quality of effluent is unstable. Production efficiency is not high, energy efficiency is low. In order to ensure the quality of water treatment and reduce the production cost of sewage treatment, advanced automatic control system must be used to control the process of sewage treatment. In this paper, the automatic control system of mine sewage treatment is designed based on the sewage treatment station of a mine living area in Yunnan province. The sewage treatment process adopts chemical precipitation method and advanced CASS process. The structure of the control system adopts the DCS control mode of the industrial computer (IPC) programmable logic controller (PLC). The structure has the advantages of complete function, flexible configuration and good expansibility. PID control algorithm is adopted to ensure the stability of effluent quality in pH and concentration control of dense bottom flow in wastewater treatment. The upper computer monitoring software of the control system adopts the WinCC7.0, lower computer to use Siemens S7-300 PLC, to design the control program of the lower computer PLC using Siemens STEP7. On the basis of discussing and analyzing the process of sewage treatment, this paper describes the technological process of sewage treatment in mine living area. Then the S7-300 PLC and the programming software STEP7. are introduced in detail. On the basis of technology, the overall control scheme is given. The system structure, hardware configuration, control program and monitoring software are designed. Debug the control system, put the system into actual operation. After the operation of the control system, the quality of the water treated by the system meets the discharge standard stipulated by the state, and the performance of the system is stable, which fully meets the design requirements. Finally, some prospects for the development of sewage treatment automatic control system are put forward.
【学位授予单位】：昆明理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：X751
本文编号：2369966
[Abstract]:The process of sewage treatment is a multivariable and complex control process. The traditional sewage treatment plant control is dominated by manual control, combined with conventional instrument control, which relies on artificial experience to control the quality of effluent is unstable. Production efficiency is not high, energy efficiency is low. In order to ensure the quality of water treatment and reduce the production cost of sewage treatment, advanced automatic control system must be used to control the process of sewage treatment. In this paper, the automatic control system of mine sewage treatment is designed based on the sewage treatment station of a mine living area in Yunnan province. The sewage treatment process adopts chemical precipitation method and advanced CASS process. The structure of the control system adopts the DCS control mode of the industrial computer (IPC) programmable logic controller (PLC). The structure has the advantages of complete function, flexible configuration and good expansibility. PID control algorithm is adopted to ensure the stability of effluent quality in pH and concentration control of dense bottom flow in wastewater treatment. The upper computer monitoring software of the control system adopts the WinCC7.0, lower computer to use Siemens S7-300 PLC, to design the control program of the lower computer PLC using Siemens STEP7. On the basis of discussing and analyzing the process of sewage treatment, this paper describes the technological process of sewage treatment in mine living area. Then the S7-300 PLC and the programming software STEP7. are introduced in detail. On the basis of technology, the overall control scheme is given. The system structure, hardware configuration, control program and monitoring software are designed. Debug the control system, put the system into actual operation. After the operation of the control system, the quality of the water treated by the system meets the discharge standard stipulated by the state, and the performance of the system is stable, which fully meets the design requirements. Finally, some prospects for the development of sewage treatment automatic control system are put forward.
【学位授予单位】：昆明理工大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：X751
【参考文献】
相关会议论文 前1条
1 邵来恩;;自动化系统在本钢污水处理厂的应用[A];第二届全国冶金节水、污水处理技术研讨会论文集[C];2005年
，本文编号：2369966
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