A modified active disturbance rejection control for a wastewater treatment process

Wei Wei; Pengfei Xia; Zaiwen Liu; Min Zuo

doi:10.1016/j.cjche.2020.06.032

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A modified active disturbance rejection control for a wastewater treatment process

Process Systems Engineering and Process Safety | Updated：2026-01-06

- A modified active disturbance rejection control for a wastewater treatment process
- Chinese Journal of Chemical Engineering Vol. 28, Issue 10, Pages: 2607-2619(2020)
- Affiliations：
  
  Beijing Technology and Business University, Beijing 100048, China National Engineering Laboratory for Agri-product Quality Traceability, Beijing Technology and Business University, Beijing 100048, China Beijing Key Laboratory of Big Data Technology for Food Safety,Beijing,China,100048
- Author bio：
- Funds：
- DOI：10.1016/j.cjche.2020.06.032
  CLC：
- Published：2020
- Accepted：
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Wei Wei, Pengfei Xia, Zaiwen Liu, Min Zuo. A modified active disturbance rejection control for a wastewater treatment process[J]. Chinese Journal of Chemical Engineering, 2020, 28(10): 2607-2619.
DOI：

Wei Wei, Pengfei Xia, Zaiwen Liu, Min Zuo. A modified active disturbance rejection control for a wastewater treatment process[J]. Chinese Journal of Chemical Engineering, 2020, 28(10): 2607-2619. DOI： 10.1016/j.cjche.2020.06.032.

摘要

Abstract

Waste water treatment process (WWTP) control has been attracting more and more attention. However

various undesired factors

such as disturbance

uncertainties

and strong nonlinear couplings

propose big challenges to the control of a WWTP. In order to improve the control performance of the closed-loop system and guarantee the discharge requirements of the effluent quality

rather than take the model dependent control approaches

an active disturbance rejection control (ADRC) is utilized. Based on the control signal and system output

a phase optimized ADRC (POADRC) is designed to control the dissolved oxygen and nitrate concentration in a WWTP. The phase advantage of the phase optimized extended state observer (POESO)

convergence of the POESO

and stability of the closed-loop system are analyzed from the theoretical point of view. Finally

a commonly accepted benchmark simulation model no. 1. (BSM1) is utilized to test the POESO and POADRC. Linear active disturbance rejection control (LADRC) and the suggested proportion-integration (PI) control are taken to make a comparative research. Both system responses and performance index values confirm the advantage of the POADRC over the LADRC and the suggested PI control. Numerical results show that

as a result of the leading phase of the total disturbance estimation

the POESO based POADRC is an effective and promising way to control the dissolved oxygen and nitrate concentration so as to ensure the effluent quality of a WWTP.

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