Fault Diagnosis System of A2/O Process Based on Parameter Estimation and Expert System

Miao Yu; Feng Pan; Xiao Feng Lian; Xiao Ting Li

doi:10.4028/www.scientific.net/AMM.263-266.1647

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 263-266Fault Diagnosis System of A2/O Process Based on...

Fault Diagnosis System of A²/O Process Based on Parameter Estimation and Expert System

Abstract:

For urban sewage treatment process of A²/O, a fault diagnosis method based on parameter estimation of Activated Sludge Model No.2(ASM2) model and expert system is proposed. Firstly, the A²/O process is simulated based on Activated Sludge Model No.2(ASM2) model, according to which, the estimated value of component parameters of biochemical reaction process is obtained, and when it’s compared with the normal value of corresponding parameters, the faults can be detected. Furthermore, an expert system that can draw fault diagnosis results is designed by means of uncertainty reasoning for expert knowledge. Finally, a fault diagnosis system for A²/O process is developed. For a sewage treatment plant of Kunming, experiment result has shown that the fault diagnosis system for A²/O process can make effective diagnosis of the actual process issues, and it has certain engineering practicability.

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Periodical:

Applied Mechanics and Materials (Volumes 263-266)

Pages:

1647-1651

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.263-266.1647

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Online since:

December 2012

Authors:

Miao Yu, Feng Pan, Xiao Feng Lian, Xiao Ting Li

Keywords:

A²/O Process, ASM2, Expert System, Fault Diagnosis, Parameter Estimation

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