6533b7ddfe1ef96bd127556e

RESEARCH PRODUCT

Performance of industrial scale hollow-fibre membranes in a submerged anaerobic MBR (HF-SAnMBR) system at mesophilic and psychrophilic conditions

María Victoria RuanoJosé FerrerÁNgel RoblesJ. Ribes

subject

Mesophilic and psychrophilic anaerobic conditionsSoluble microbial products (SMPs)INGENIERIA HIDRAULICAMembrane permeabilityFoulingChemistryEnvironmental engineeringUltrafiltrationFiltration and SeparationPulp and paper industryAnalytical ChemistryMembraneExtracellular polymeric substanceMembrane permeabilityWastewaterExtracellular polymeric substances (EPSs)PsychrophileIndustrial hollow-fibre membranesTECNOLOGIA DEL MEDIO AMBIENTEMesophile

description

The aim of this work was to evaluate the effect of temperature on the performance of industrial hollow-fibre (HF) membranes treating urban wastewater in a submerged anaerobic MBR system (SAnMBR). To this end, a demonstration plant with two commercial HF ultrafiltration membrane modules (PURON®, Koch Membrane Systems, PUR-PSH31) was operated at 20, 25 and 33 °C. The mixed liquor total solid (MLTS) level was a key factor affecting membrane permeability (K). K was higher under psychrophilic than mesophilic conditions when operating at similar transmembrane fluxes and MLTS, because the biomass activity of the psychrophilic mixed liquor was lower than the mesophilic mixed liquor. Thus, lower extracellular polymeric substances (EPSs) and soluble microbial products (SMPs) levels were observed at psychrophilic conditions, which affected not only the three-dimensional floc matrix, but also the fouling propensity. However, no chemical cleaning was needed during the experimental period (almost 1 year) because no irreversible fouling problems were detected.

yearjournalcountryeditionlanguage
2013-02-01
10.1016/j.seppur.2012.12.004https://doi.org/10.1016/j.seppur.2012.12.004