Journal article
Development of novel control strategies for single-stage autotrophic nitrogen removal: A process oriented approach
Department of Chemical and Biochemical Engineering, Technical University of Denmark1
Computer Aided Process Engineering Center, Department of Chemical and Biochemical Engineering, Technical University of Denmark2
Center for Process Engineering and Technology, Department of Chemical and Biochemical Engineering, Technical University of Denmark3
CAPEC-PROCESS, Department of Chemical and Biochemical Engineering, Technical University of Denmark4
The autotrophic nitrogen removing granular sludge process is a novel and intensified process. However, its stable operation and control remain a challenging issue. In this contribution, a process oriented approach was used to develop, evaluate and benchmark novel control strategies to ensure stable operation and rejection of disturbances.
Three novel control strategies were developed, evaluated, and benchmarked against each other: a feedforward control (control structure 1 – CS#1), a rule-based feedback control (CS#2), and a feedforward–feedback controller, in which the feedback loop updates the set point of the feedforward loop (CS#3).
The CS#1 gave the best performance against disturbances in the ammonium concentration, whereas the CS#2 provided the best performance against disturbances in the organic carbon concentration and dynamic influent conditions. The CS#3 rejected both disturbances satisfactorily. Thus, the appropriate design will depend on the specific disturbances in the influent generated in the upstream units of the wastewater treatment plant.
| Language: | English |
|---|---|
| Year: | 2014 |
| Pages: | 71-81 |
| ISSN: | 18734375 and 00981354 |
| Types: | Journal article |
| DOI: | 10.1016/j.compchemeng.2014.01.017 |
| ORCIDs: | Gernaey, Krist and Sin, Gürkan |
