A simple and efficient feedback control strategy for wastewater denitrification
For wastewater treatment plants, this provides a simpler and more efficient control method to improve denitrification performance.
The paper introduces a model-free feedback control strategy for wastewater denitrification, addressing the limitations of open-loop feedforward control. Simulations show improved performance in regulating two output variables with a single input.
Due to severe mathematical modeling and calibration difficulties open-loop feedforward control is mainly employed today for wastewater denitrification, which is a key ecological issue. In order to improve the resulting poor performances a new model-free control setting and its corresponding "intelligent" controller are introduced. The pitfall of regulating two output variables via a single input variable is overcome by introducing also an open-loop knowledge-based control deduced from the plant behavior. Several convincing computer simulations are presented and discussed.