Jinan City Water Purification A Plant Diffused Aeration System Of Automatic Control

The thesis analyses the current situation of Jinan No. 1 waste water treatment plant blast aeration system according to the research condition of the city waste water treatment plant blast aeration control system, the thesis strong emphasis how to apply the Dissolved oxygen control to the Jinan No. 1 waste water treatment plant.1 The thesis explains the importance and emphasis of the city waste water treatment plant aeration control system from two aspects , technological requirements and economize. The thesis explains the main content of the research : although the PID control system applies widely to the project , it solves only the problem of regulation in linearity system . although the PID system can control the air blower in the aeration system , it can' t control the effect of the waste water treatment .when we control the dissolved oxygen, we need regulating the parameter according to actual case regularly, Fuzzy Logic Control and Gain-scheduling control are superioriter than others. 2 The thesis explains two mediate plan in detail : (1) the regulationsystem of singularity circuit and fix value (2) Dissolved oxygen theregulation system of contact control in flow. As the same time , it introducesthree control methods: (1) the normal PID control (2) Fuzzy Logic Control(3) Gain-scheduling control.3 The thesis introduces the current situation and hardware of Jinan No. 1 waste water treatment plant blast aeration system. It explains that the current system is the regulation system of singularity circuit and fix value, and it is made up with controller dissolved oxygen surveying instrument the blower of frequency converter.4 The thesis analyses PID control plan of contact control of dissolved oxygen, according to the mathematics model.5 establish a mathematics model with the DO, the consistency of dissolved...