基于组态软件的污水处理系统的设计

基于组态软件的污水处理系统设计

摘要：随着我国经济的高速发展，环境保护已经是一个突出的需要重视的问题。污水处理在环境保护中又是一个最重要的环节。同时随着计算机技术和我国污水处理工程迅速发展，对污水处理过程自动化程度要求不断提高，利用先进的控制技术和设备对污水处理过程进行监控是非常必要的。

本课题论述了污水处理工艺及污水处理系统的组成和组态控制系统设计，并详细介绍了SBR污水处理法自动控制系统的设计过程。本系统包括监控组态设计和梯形图设计两个方面，实现了中小型城市的污水处理自动控制和远程监控。系统主要由PLC、液位传感器、进水泵、滗水器、进泥泵及抽泥泵组成，分为手动和自动两种控制方式，使用梯形图语言完成系统对现场的控制；使用MCGS监控组态软件设计监控界面，不仅可以模拟演示系统工作状况，而且还可以对现场工作情况进行实时监控，并对系统进行远程控制，完成SBR污水处理法的自动运行。当系统发生状况时，能够及时发现，并停止系统，进行检修，减少污水处理过程中事故的发生。

关键词：PLC ；城市污水处理；MCGS组态软件；SBR

The Wastewater Treatment System Based on

Configuration Software Design

Abstract：With the rapid development of China's economy, environmental protection has been a prominent need attaches great importance to the problem. Sewage treatment in the environmental protection is one of the most important link. At the same time, along with the rapid development of computer technology and sewage treatment engineering in our country, constantly improve the degree of automation requirements, the process of wastewater treatment by using advanced control technology and equipment to monitor the process of sewage treatment is very necessary.

This topic describes about the technology of sewage treatment and sewage treatment system composition and configuration of the control system design, and introduces in detail the SBR sewage treatment automatic control system of the design process. This system includes monitoring configuration design and ladder diagram design two aspects, realized the small and medium-sized city sewage treatment automatic control and remote monitoring. System is mainly composed of PLC, liquid level sensor, into the water pump, water decanter, into the mud and mud pump, is divided into two kinds of control mode, manual and automatic use ladder diagram language to complete the system control of the scene; Use the MCGS monitoring configuration software design the monitoring interface, not only can simulate the demo system work condition, on the basis of working condition on site and can be real-time monitoring, and the system of remote control, complete the automatic operation of the SBR sewage treatment method. When the system status, can be found in time, and stop the system, for maintenance, reduce sewage treatment process in the accident.

Keywords: PLC , city sewage treatment,MCGS configuration software,SBR

目录

第1章绪论 (5)

1.1设计背景 (5)

1.2研究的目的和意义 (6)

1.3污水处理系统的国内外现状 (6)

1.4主要设计内容 (7)

第2章污水处理工艺流程 (8)

2.1常用的污水处理工艺 (8)

2.1.1传统活性污泥法 (8)

2.1.2A/O法 (9)

2.1.3A/A/O法 (9)

2.1.4A/B法 (10)

2.1.5SBR法 (10)

2.2SBR法过程介绍 (11)

2.2.1进水 (11)

2.2.2反应 (11)

2.2.3沉淀 (11)

2.2.4排水 (11)

第3章硬件设计 (13)

3.1PLC的介绍 (13)

3.1.1PLC的结构 (13)

3.1.2PLC的工作原理 (14)

3.1.3PLCI/O口分配 (15)

3.2SBR法的总体设计 (17)

3.2.1方案设计 (17)

3.2.2硬件电路设计 (18)

3.3 其他资源配置 (20)

3.3.1接触器选型 (20)

3.3.2液位计选型 (20)

3.3.3滗水器选型 (21)