A comprehensive plant-wide mathematical modelling comparison between conventional activated sludge (CAS) and Membrane bioreactor (MBR) systems is presented. The main aim of this study is to highlight the key features of CAS and MBR in order to provide a guide for an effective plant operation. A scenario analysis was performed to investigate the influence on direct and indirect greenhouse gas (GHG) emissions and operating costs of (i) the composition of inflow wastewater (scenario 1), (ii) operating conditions (scenario 2) and (iii) oxygen transfer efficiency (scenario 3). Scenarios show higher indirect GHG emissions for MBR than CAS, which result is related to the higher energy consumption in MBR. The simultaneous variation of the investigated factors (scenario 4) exacerbates direct and indirect GHG emissions for both CAS and MBR. Indeed, during scenario 4 a maximum direct GHG emissions of 0.94 kgCO2eq m−3 and 1.56 kgCO2eq m−3 for CAS and MBR, respectively, was obtained.

Mannina G., Cosenza A., & Reboucas T.F. (2020). A plant-wide modelling comparison between membrane bioreactors and conventional activated sludge. BIORESOURCE TECHNOLOGY, 297(1) [10.1016/j.biortech.2019.122401].

A plant-wide modelling comparison between membrane bioreactors and conventional activated sludge

Mannina G.
Membro del Collaboration Group
;
Cosenza A.
Membro del Collaboration Group
;
2020

Abstract

A comprehensive plant-wide mathematical modelling comparison between conventional activated sludge (CAS) and Membrane bioreactor (MBR) systems is presented. The main aim of this study is to highlight the key features of CAS and MBR in order to provide a guide for an effective plant operation. A scenario analysis was performed to investigate the influence on direct and indirect greenhouse gas (GHG) emissions and operating costs of (i) the composition of inflow wastewater (scenario 1), (ii) operating conditions (scenario 2) and (iii) oxygen transfer efficiency (scenario 3). Scenarios show higher indirect GHG emissions for MBR than CAS, which result is related to the higher energy consumption in MBR. The simultaneous variation of the investigated factors (scenario 4) exacerbates direct and indirect GHG emissions for both CAS and MBR. Indeed, during scenario 4 a maximum direct GHG emissions of 0.94 kgCO2eq m−3 and 1.56 kgCO2eq m−3 for CAS and MBR, respectively, was obtained.
Settore ICAR/03 - Ingegneria Sanitaria-Ambientale
Mannina G., Cosenza A., & Reboucas T.F. (2020). A plant-wide modelling comparison between membrane bioreactors and conventional activated sludge. BIORESOURCE TECHNOLOGY, 297(1) [10.1016/j.biortech.2019.122401].
File in questo prodotto:
File Dimensione Formato  
Manninaetal_BITE-Proof2019.pdf

non disponibili

Descrizione: article in press
Dimensione 2.24 MB
Formato Adobe PDF
2.24 MB Adobe PDF   Visualizza/Apri   Richiedi una copia
1-s2.0-S0960852419316311-main.pdf

non disponibili

Tipologia: Versione Editoriale
Dimensione 2.28 MB
Formato Adobe PDF
2.28 MB Adobe PDF   Visualizza/Apri   Richiedi una copia

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/10447/430661
Citazioni
  • ???jsp.display-item.citation.pmc??? 0
  • Scopus 14
  • ???jsp.display-item.citation.isi??? 12
social impact