| Abstract |
| This study was carried out to investigate the charateristics of wastewater pretreatment of aerobic/anoxic (OA) reactor, granule sludge (GS) reactor, and OA-GAC processes followed by membrane filtration (MF) processes with regard to contaminant and fouling reduction. Influent water qualities were on average 134.8±3.5 mgTOC/L, 32.00±1.60 mgT-N/L, and 3.40±0.13 mgT-P/L, respectively. Water temperature and pH were 20±0.5 and 6.7±0.4. As a result, the removal ℃ efficiencies of TOC, T-N, and T-P were 81.2±9.2, 69.7±10.6, and 71.6±12.6% for OA-MF configured system, 92.8±5.1, 79.2±8.0, and 82.8±9.9% for GS-MF configured system, and 97.0±2.1, 87.4±6.1, and 87.9±6.6% for OA-GAC-MF configured system, respectively. The permeate flux of OA-MF, GS-MF, and OA-GAC-MF configured system were in the range of 47.5±3.5, 93.9±2.9, and 215.2±26.6 L/m2hr, respectively. GS-MF and OA-GAC-MF configured systems with regard to contaminants reduction and high flux production were more effective than the OA-MF configured system. The GS reactor as an alternative process of the OA reactor or the addition of GAC bed after the OA process is needed to improve a fouling and filtration time of MF process. |
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| Key Words |
| Aerobic, anoxic reactor, granule sludge, GAC, membrane filtration, pretreatment |
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