目 录
1 引 言.......................................................................................................................................1
1.1 课题背景 ..........................................................................................................................1
1.2 国内外发展现状 ..............................................................................................................1
1.3 课题目的和意义 ..............................................................................................................2
2 SBR 污水处理工艺和控制方案 ............................................................................................2
2.1 污水处理工艺 ..................................................................................................................2
2.2 控制方案 ..........................................................................................................................4
3 系统硬件设计.........................................................................................................................5
3.1 PLC 型号的选择..............................................................................................................5
3.2 PLC 外部 I/O 设备的选型 ..............................................................................................5
3.2.1 水泵选择...................................................................................................................5
3.2.2 固态继电器的选择...................................................................................................6
3.2.3 水位开关的选择.......................................................................................................6
3.2.4 电磁阀的选择...........................................................................................................6
3.2.5 风机的选择...............................................................................................................7
4 污水处理系统软件设计......................................................................................................7
4.1 污水处理系统程序流程图 ..............................................................................................8
4.2 污水处理系统程序设计 ................................................................................................10
4.3 污水处理系统程序仿真 ................................................................................................13
5 污水处理系统组态设计....................................................................................................15
5.1 人机画面设计 ................................................................................................................15
5.2 构建数据库 ....................................................................................................................16
5.3 画面连接 ........................................................................................................................17
5.4 组态监控仿真 ................................................................................................................17
结束语 ......................................................................................................................................21
参考文献..................................................................................................................................22
致 谢 ........................................................................................................................................23
