6533b82cfe1ef96bd128f702
RESEARCH PRODUCT
A plant-wide modelling comparison between membrane bioreactors and conventional activated sludge
Giorgio ManninaTaise Ferreira RebouçasAlida Cosenzasubject
0106 biological sciencesEnvironmental EngineeringBioengineeringWastewater010501 environmental sciencesMembrane bioreactor01 natural sciencesWaste Disposal FluidGreenhouse GasesBioreactors010608 biotechnologyBioreactorWaste WaterScenario analysisWaste Management and Disposal0105 earth and related environmental sciencesWWTPEnergy demandMathematical modellingSewageSettore ICAR/03 - Ingegneria Sanitaria-AmbientaleRenewable Energy Sustainability and the EnvironmentEnvironmental engineeringMembranes ArtificialGeneral MedicineEnergy consumptionActivated sludgeWastewaterPlant-wide modelGreenhouse gasSimple modelEnvironmental scienceWaste disposaldescription
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.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2020-02-01 |