Optimal Control of Effluent Ammonia Nitrogen for Municipal Wastewater Treatment Process

doi:10.16183/j.cnki.jsjtu.2020.170

Abstract

Abstract:

To improve the treatment effect of effluent ammonia nitrogen in municipal wastewater treatment process, an optimal control method was proposed in this paper. First, the performance index of effluent ammonia nitrogen concentration was analyzed by using the mechanism characteristics. Then, a relationship model with the adaptive kernel function between the performance index and the control variables was established. Next, a particle swarm optimization algorithm was used to obtain the optimal solutions of dissolved oxygen concentration. After that, an adaptive fuzzy neural network controller was designed to complete the tracking control of dissolved oxygen concentration. Finally, the proposed optimal control method was applied to the benchmark simulation model No.1 (BSM1). The results demonstrated that the proposed optimal control method can not only improve the treatment effect of effluent ammonia nitrogen, but also effectively reduce the energy consumption.

Key words: municipal wastewater treatment process, effluent ammonia nitrogen, optimal control, adaptive fuzzy neural network controller

CLC Number:

TU433

HAN Honggui, YANG Shiheng, ZHANG Lu, QIAO Junfei. Optimal Control of Effluent Ammonia Nitrogen for Municipal Wastewater Treatment Process[J]. Journal of Shanghai Jiaotong University, 2020, 54(9): 916-923.

Figures/Tables 10

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天气	控制方法	AE/(kW·h^-1)	S_NH,avg/(mg·L^-1)
晴天	开环	3340	4.46
	PID	3676	2.34
	AE优化	3476	1.89
雨天	开环	3341	4.55
	PID	3665	2.56
	AE优化	3425	1.95
暴雨	开环	3340	4.52
	PID	3688	2.48
	AE优化	3443	1.97

天气	控制器	ISE	IAE
晴天	PID	5.26×10^-3	0.450
	BP	4.29×10^-4	0.071
	FNNC	3.29×10^-4	0.051
雨天	PID	5.28×10^-3	0.470
	BP	4.18×10^-4	0.074
	FNNC	3.27×10^-4	0.055
暴雨	PID	5.16×10^-3	0.430
	BP	4.25×10^-4	0.078
	FNNC	3.25×10^-4	0.054