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RESEARCH PRODUCT
Environmental impact of submerged anaerobic MBR (SAnMBR) technology used to treat urban wastewater at different temperatures
María Victoria RuanoAurora SecoJosé FerrerÁNgel RoblesR. Pretelsubject
INGENIERIA HIDRAULICAEnvironmental EngineeringBioengineeringEnergy balanceEnvironmentWastewaterWaste Disposal FluidWater PurificationEnvironmental impactLife cycle assessmentBioreactorsBiogasAnaerobiosisCitiesWaste Management and DisposalLife-cycle assessmentEffluentTECNOLOGIA DEL MEDIO AMBIENTESubmerged anaerobic MBR (SAnMBR)SewageSulfatesRenewable Energy Sustainability and the EnvironmentGlobal warming potentialTemperatureEnvironmental engineeringMembranes ArtificialGeneral MedicineWaste treatmentWastewaterBiofuelBiofuelsEnvironmental scienceSewage treatmentWater treatmentMethanedescription
[EN] The objective of this study was to assess the environmental impact of a submerged anaerobic MBR (SAnMBR) system in the treatment of urban wastewater at different temperatures: ambient temperature (20 and 33 degrees C), and a controlled temperature (33 degrees C). To this end, an overall energy balance (OEB) and life cycle assessment (LCA), both based on real process data, were carried out. Four factors were considered in this study; (1) energy consumption during wastewater treatment; (2) energy recovered from biogas capture; (3) potential recovery of nutrients from the final effluent; and (4) sludge disposal. The OEB and LCA showed SAnMBR to be a promising technology for treating urban wastewater at ambient temperature (OEB = 0.19 kW h m(-3)). LCA results reinforce the importance of maximising the recovery of nutrients (environmental impact in eutrophication can be reduced up to 45%) and dissolved methane (positive environmental impact can be obtained) from SAnMBR effluent. (C) 2013 Elsevier Ltd. All rights reserved.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2013-12-01 |