6533b873fe1ef96bd12d4ccf

RESEARCH PRODUCT

Comparison between moving bed-membrane bioreactor (MB-MBR) and membrane bioreactor (MBR) systems: Influence of wastewater salinity variation

Daniele Di TrapaniMichele TorregrossaGaetano Di BellaGaspare VivianiGiorgio Mannina

subject

SalinityEnvironmental EngineeringBiofoulingPilot ProjectsBioengineeringWastewaterMembrane bioreactorWaste Disposal Fluidchemistry.chemical_compoundBiopolymersBioreactorsAmmonium CompoundsElectric ImpedanceAmmoniumBiomassWaste Management and DisposalBiological Oxygen Demand AnalysisSettore ICAR/03 - Ingegneria Sanitaria-AmbientaleFoulingRenewable Energy Sustainability and the EnvironmentMembrane foulingEnvironmental engineeringMembranes ArtificialGeneral MedicineMembrane fouling Saline wastewater MB-MBR RespirometryPulp and paper industrySalinityKineticsPilot plantMembranechemistryWastewaterBiofilmsExtracellular SpaceFiltration

description

Two pilot plant systems were investigated for the treatment of wastewater subject to a gradual increase of salinity. In particular, a membrane bioreactor (MBR) and a moving bed biofilm membrane bioreactor (MB-MBR) were analyzed. Carbon and ammonium removal, kinetic constants and membranes fouling rates have been assessed. Both plants showed very high efficiency in terms of carbon and ammonium removal and the gradual salinity increase led to a good acclimation of the biomass, as confirmed by the respirometric tests. Significant biofilm detachments from carriers were experienced, which contributed to increase the irreversible superficial cake deposition. However, this aspect prevented the pore fouling tendency in the membrane module of MB-MBR system. On the contrary, the MBR pilot, even showing a lower irreversible cake deposition, was characterized by a higher pore fouling tendency.

yearjournalcountryeditionlanguage
2014-01-16Bioresource Technology
https://doi.org/10.1016/j.biortech.2014.03.126