Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference (한국전기전자재료학회:학술대회논문집)

The Korean Institute of Electrical and Electronic Material Engineers (한국전기전자재료학회)
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Local Control and Remote Optimization for CSTR Wastewater Treatment Systems

CSTR 하.폐수처리장의 국지 제어 및 원격 최적화 시스템

  • Bae, Hyeon (School of Electrical and Computer Engineering, Pusan National University) ;
  • Seo, Hyun-Yong (School of Electrical and Computer Engineering, Pusan National University) ;
  • Kim, Sung-Shin (School of Electrical and Computer Engineering, Pusan National University)
  • 배현 (부산대학교 전자전기통신공학부) ;
  • 서현용 (부산대학교 전자전기통신공학부) ;
  • 김성신 (부산대학교 전자전기통신공학부)
  • Published : 2002.05.11
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Abstract

Activated sludge processes are widely used in biological wastewater treatment processes. The main motivation of this research is to develop an intelligent control strategy for activated sludge process (ASP). ASP is a complex and nonlinear dynamic system because of the characteristic of wastewater, the change in influent rate, weather conditions, and so on. The mathematical model of ASP also includes uncertainties which are ignored or not considered by process engineer or controller designer. The ASP model based on Matlab/Simulink is designed in this paper. The performance of the model is tested by IWA (International Water Association) and COST (European Cooperation in the filed of Scientific and Technical Research) data that include steady-state results during 14 days. In this paper, fuzzy logic control approach is applied to control the DO (dissolved oxygen) concentration. The fuzzy logic controller that includes two inputs and one output can adjust air flowrate. Also, this paper introduces the remote monitoring and control system that is applied for the CSTR (Continuously Stirred Tank Reactor) wastewater treatment system. The CSTR plant has a local control and the remote monitoring system which is contained communication parts which consist of LAN (Local Area Network) network and CDMA (Code Division Multiple Access) wireless module. Remote control and monitoring systems are constructed in the laboratory.

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