Evaluation of long-term operational and treatment performance of a high-biomass submerged anaerobic membrane bioreactor treating abattoir wastewater

Although anaerobic membrane bioreactors (AnMBR) are widely used in high-strength wastewater treatment and resource recovery, operational performance fouling control remain critical issues. In this study, the of a high-biomass (18 ≤ MLSS (g/L) 35) submerged bioreactor (HBSAnMBR) was assessed at organic loading rates (OLR) 1.05–5 kg-COD/m3/d to treat abattoir (AWW). The correlation between kinetic parameters representing biomass yield extracellular polymeric substances (EPS) thoroughly investigated using mathematical models. It found that EPS correlated positively with applied OLR were range 0.13–0.31 g-MLSS/g-COD 0.00001–0.000013 g-EPS/g-MLSS, respectively. This study also systematically examined cake layer mechanisms HBSAnMBR due influence soluble microbial products (SMP) on pore blocking. above 4 negatively affected terms TMP, filtration resistance, EPS/SMP production, COD removal suggesting can be operated sustainably kg-COD/m3/d. autopsy analyses foulant characterization foulants primarily composed polysaccharides proteins, while did not experience pore-blocking. At same time, sodium, phosphorous, calcium triggered inorganic fouling. efficient showed system could trade containing high-organic content.