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Progress in sensor technology--progress in process control? Part II: results from a simulation benchmark study.

J Alex1, L Rieger, S Winkler

  • 1ifak, Institute for Automation and Communication, Steinfeldstrasse, 39179 Barleben, Germany. ali@ifak.fhg.de

Water Science and Technology : a Journal of the International Association on Water Pollution Research
|March 15, 2003
PubMed
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Sensor behavior significantly impacts wastewater treatment plant (WWTP) control. Faster sensors improve control quality, while advanced control strategies like feedforward can maximize potential, necessitating accurate sensor models for simulations.

Area of Science:

  • Environmental Engineering
  • Process Control
  • Water Treatment Technologies

Background:

  • Wastewater treatment plant (WWTP) control systems are crucial for efficient operation.
  • Sensor characteristics, such as response time, can significantly influence control outcomes.
  • Optimizing aeration control requires understanding the interplay between sensors and control strategies.

Purpose of the Study:

  • To evaluate the impact of sensor behavior on aeration control performance in WWTPs.
  • To compare different aeration control strategies under varying sensor conditions.
  • To demonstrate the necessity of incorporating sensor models in dynamic simulations for WWTP control design.

Main Methods:

  • Simulation studies using a standardized WWTP benchmark case.

Related Experiment Videos

  • Implementation of four distinct aeration control strategies.
  • Modeling of different sensor characteristics, including response time and delay.
  • Comparison of feedback and feedforward control approaches.

    • Main Results:

    • Increasing sensor response time limits achievable control quality.
    • Feedforward control offers higher improvement potential compared to feedback control.
    • Integrating sensor delay into controller design is feasible and beneficial, especially with feedforward control.
    • Accurate sensor models are essential for realistic dynamic simulations in WWTP control.

    Conclusions:

    • Sensor behavior is a critical factor in WWTP aeration control effectiveness.
    • Advanced control strategies and accurate sensor modeling can unlock significant operational improvements.
    • Careful controller design, considering sensor limitations, is required to activate control potential in WWTPs.