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Effluent quality improvement in sequencing batch reactor-based wastewater treatment processes using advanced control strategies.
Dey, Indranil; Ambati, Seshagiri Rao; Bhos, Prashant Navnath; Sonawane, Shirish; Pilli, Sridhar.
Afiliación
  • Dey I; Department of Chemical Engineering, National Institute of Technology, Warangal 506004, Telangana, India.
  • Ambati SR; Department of Chemical Engineering, National Institute of Technology, Warangal 506004, Telangana, India; Department of Chemical Engineering, Indian Institute of Petroleum & Energy (IIPE), Visakhapatnam 530003, Andhra Pradesh, India E-mail: seshagiri.che@iipe.ac.in; seshagiri@nitw.ac.in.
  • Bhos PN; Department of Chemical Engineering, National Institute of Technology, Warangal 506004, Telangana, India.
  • Sonawane S; Department of Chemical Engineering, National Institute of Technology, Warangal 506004, Telangana, India.
  • Pilli S; Department of Civil Engineering, National Institute of Technology, Warangal 506004, Telangana, India.
Water Sci Technol ; 89(10): 2661-2675, 2024 May.
Article en En | MEDLINE | ID: mdl-38822606
ABSTRACT
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.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Eliminación de Residuos Líquidos / Reactores Biológicos Idioma: En Revista: Water Sci Technol Asunto de la revista: SAUDE AMBIENTAL / TOXICOLOGIA Año: 2024 Tipo del documento: Article País de afiliación: India Pais de publicación: Reino Unido
Texto completo
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Eliminación de Residuos Líquidos / Reactores Biológicos Idioma: En Revista: Water Sci Technol Asunto de la revista: SAUDE AMBIENTAL / TOXICOLOGIA Año: 2024 Tipo del documento: Article País de afiliación: India Pais de publicación: Reino Unido