Effluent quality improvement in sequencing batch reactor-based wastewater treatment processes using advanced control strategies.
ASM2d model
SBR
aeration control
effluent quality
fuzzy logic
mathematical modelling
Journal
Water science and technology : a journal of the International Association on Water Pollution Research
ISSN: 0273-1223
Titre abrégé: Water Sci Technol
Pays: England
ID NLM: 9879497
Informations de publication
Date de publication:
May 2024
May 2024
Historique:
received:
23
12
2023
accepted:
30
04
2024
medline:
1
6
2024
pubmed:
1
6
2024
entrez:
1
6
2024
Statut:
ppublish
Résumé
The treatment of wastewater is highly challenging due to large fluctuations in flowrates, pollutants, and variable influent water compositions. A sequencing batch reactor (SBR) and modified SBR cycle-step-feed process (SSBR) configuration are studied in this work to effectively treat municipal wastewater while simultaneously removing nitrogen and phosphorus. To control the amount of dissolved oxygen in an SBR, three axiomatic control strategies (proportional integral (PI), fractional proportional integral (FPI), and fuzzy logic controllers) are presented. Relevant control algorithms have been designed using plant data with the models of SBR and SSBR based on ASM2d framework. On comparison, FPI showed a significant reduction in nutrient levels and added an improvement in effluent quality. The overall effluent quality is improved by 0.86% in FPI in comparison with PI controller. The SSBR, which was improved by precisely optimizing nutrient supply and aeration, establishes a delicate equilibrium. This refined method reduces oxygen requirements while reliably sustaining important biological functions. Focusing solely on the FPI controller's performance in terms of total air volume consumption, the step-feed SBR mechanism achieves an excellent 11.04% reduction in consumption.
Identifiants
pubmed: 38822606
pii: wst_2024_150
doi: 10.2166/wst.2024.150
doi:
Substances chimiques
Wastewater
0
Phosphorus
27YLU75U4W
Nitrogen
N762921K75
Water Pollutants, Chemical
0
Oxygen
S88TT14065
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM
Pagination
2661-2675Informations de copyright
© 2024 The Authors This is an Open Access article distributed under the terms of the Creative Commons Attribution Licence (CC BY 4.0), which permits copying, adaptation and redistribution, provided the original work is properly cited (http://creativecommons.org/licenses/by/4.0/).
Déclaration de conflit d'intérêts
The authors declare there is no conflict.
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