TY - JOUR
T1 - A plant-wide modelling comparison between membrane bioreactors and conventional activated sludge
AU - Cosenza, Alida
AU - Mannina, Giorgio
PY - 2020
Y1 - 2020
N2 - 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.
AB - 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.
KW - Artificial; Waste Disposal
KW - Energy demand; Greenhouse gases; Mathematical modelling; Plant-wide model; Simple model; WWTP; Bioreactors; Membranes
KW - Fluid; Waste Water; Greenhouse Gases; Sewage
KW - Artificial; Waste Disposal
KW - Energy demand; Greenhouse gases; Mathematical modelling; Plant-wide model; Simple model; WWTP; Bioreactors; Membranes
KW - Fluid; Waste Water; Greenhouse Gases; Sewage
UR - http://hdl.handle.net/10447/430661
M3 - Article
VL - 297
JO - Bioresource Technology
JF - Bioresource Technology
SN - 0960-8524
ER -