| Abstract |
| Stirred dead-cell filtration has been widely used for fundamental studies on membrane fouling caused by soluble and colloidal matter during membrane filtration. In this study, the performance of MBR using a dead-end stirrer cell was conducted to investigate the removal of dissolved organic matters from real mixed liquor in aeration tank and transmembrane pressure (TMP) with hydraulic behavior on the membrane surface. Applied stirring rate as a hydraulic behavior index ranged from 100 to 1000 rpm. Influent water qualities were in the range of MLSS < 10,000 mg/L, UV254 < 0.3 cm-1, dissolved organic carbon (DOC) < 45 mg/L, and specific UV absorbance (SUVA) <2.5 L/mg.m, respectively. As a result, the membrane biofiltration achieved higher efficiencies of TOC and DOC except UV254 having lower efficiency < 40% regardless of the hydraulic shear force. An increase in the hydraulic shear force resulted in a decline in TMP. This indicates that higher hydraulic shear force is needed to improve TMP in operating a long-term filtration of MBR having a suitable permeate flux to enhance dissolved organic matter removal efficiency. |
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| Key Words |
| Dissolved organic matter, Hydraulic behavior, Membrane bioreactor, Membrane filtration, SUVA, TMP |
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