6533b854fe1ef96bd12ae11f

RESEARCH PRODUCT

Methane recovery efficiency in a submerged anaerobic membrane bioreactor (SAnMBR) treating sulphate-rich urban wastewater: Evaluation of methane losses with the effluent

José FerrerN. MartíAurora SecoJuan Bautista Giménez

subject

Environmental EngineeringPilot ProjectsBioengineeringWaste Disposal FluidMethaneWater PurificationMembrane technologychemistry.chemical_compoundBioreactorsAnaerobiosisCitiesWaste Management and DisposalEffluentTECNOLOGIA DEL MEDIO AMBIENTEBiological Oxygen Demand AnalysisEnergy recoverySulfatesRenewable Energy Sustainability and the EnvironmentUrban wastewaterTemperatureEnvironmental engineeringMethane saturation indexMembranes ArtificialGeneral MedicineSubmerged anaerobic membrane bioreactor (SAnMBR)chemistryWastewaterBiofuelsGreenhouse gasDissolved methaneSewage treatmentSulphate-rich wastewaterMethaneAnaerobic exercise

description

The present paper presents a submerged anaerobic membrane bioreactor (SAnMBR) as a sustainable approach for urban wastewater treatment at 33 and 20 C, since greenhouse gas emissions are reduced and energy recovery is enhanced. Compared to other anaerobic systems, such as UASB reactors, the membrane technology allows the use of biogas-assisted mixing which enhances the methane stripping from the liquid phase bulk. The methane saturation index obtained for the whole period (1.00 ± 0.04) evidenced that the equilibrium condition was reached and the methane loss with the effluent was reduced. The methane recovery efficiency obtained at 20 C (53.6%) was slightly lower than at 33 C (57.4%) due to a reduction of the treatment efficiency, as evidenced by the lower methane production and the higher waste sludge per litre of treated wastewater. For both operational temperatures, the methane recovery efficiency was strongly affected by the high sulphate concentration in the influent wastewater.

yearjournalcountryeditionlanguage
2012-01-10Bioresource Technology
https://doi.org/10.1016/j.biortech.2012.05.019