A Petri nets-based process planning system for wastewater treatment

Albert W.L. Yao, Zhiming Ji, H. T. Liao

Research output: Contribution to journalArticlepeer-review

15 Scopus citations


It is always challenging to simulate, debug or diagnose automated systems. The aim of this paper is to present the development of a convenient tool for reengineering the control system in a complicated industrial wastewater treatment plant. In this project, a PC-based Human-Machine Interface (HMI) in conjunction with Petri nets (PN) theory is adopted to develop and simulate the operational process for wastewater treatment. The resultant tool offers many advantages to the reality of the automated control world. It not only reduces the process reengineering time and the cost of error recovery, but also builds a panel of human interface for the process. The discrete event control sequence of wastewater treatment can be easily modeled and evaluated before its build-up. Furthermore, this PN-based system can be used as an online diagnostic tool when the wastewater treatment process is malfunctioning. That is, the presented PN tool provides an adequate means for offline process development, simulation, performance evaluation, and quick online process diagnosis.

Original languageEnglish (US)
Pages (from-to)281-291
Number of pages11
JournalAsian Journal of Control
Issue number3
StatePublished - May 2010

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering
  • Control and Systems Engineering
  • Mathematics (miscellaneous)


  • Offline simulation
  • Online diagnosis
  • Petri nets
  • Wastewater treatment


Dive into the research topics of 'A Petri nets-based process planning system for wastewater treatment'. Together they form a unique fingerprint.

Cite this