曝氣池溶解氧的優(yōu)化控制儀的設(shè)計與實現(xiàn)
[Abstract]:Biological aerated filter is an important way to treat wastewater, and the concentration of dissolved oxygen in biological aerated filter is an important index to restrict water quality. Therefore, the control of dissolved oxygen concentration is very important, and it is very important to design an optimal control instrument for dissolved oxygen in aeration tank. Firstly, the present situation of the dissolved oxygen controller is studied, and the design requirements of the controller are put forward according to the actual situation of our country. Then according to the design requirements, the corresponding software and hardware design scheme is developed. The whole control system is divided into two parts: hardware platform construction and software control system programming. The hardware platform is mainly divided into: information acquisition / conversion, frequency converter control, switching control, display screen, PC communication. The software is mainly composed of system configuration module, subsystem driving module, algorithm realization module and dissolved oxygen concentration control module. Finally, the algorithm introduced by the controller is studied and simulated, which plays a great role in the realization of the control algorithm. Innovation in the design of dissolved oxygen optimal control instrument in aeration tank: 1. Highly integrated, each aeration tank decentralized control module centralized control. 2. Energy saving control, through the introduction of frequency converter control, the energy consumption of the blower is reduced to the lowest 3. 3. Fuzzy PID control algorithm and expert control experience are introduced to control the concentration of dissolved oxygen in a more accurate range to improve the quality of wastewater treatment. The proposed control algorithm is simulated and verified in the laboratory. The accurate control function of dissolved oxygen concentration is realized, the control accuracy is high, the ability of resisting external interference is strong, and the operation is stable.
【學(xué)位授予單位】:濟(jì)南大學(xué)
【學(xué)位級別】:碩士
【學(xué)位授予年份】:2017
【分類號】:X703;TP273
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