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장기 내구형 신모듈 개발 및 저에너지 MBR 공정 적용
이광진,이아름,정호찬,문희완,이우녕,노형근 한국막학회 2018 한국막학회 총회 및 학술발표회 Vol.2018 No.05
Membrane bioreactors (MBRs) have big issue on high aeration energy. In this study, reciprocation of membrane was adapted to mitigate membrane fouling. Inertial force induced by reciprocation removed foulants from membrane surface. Pilot plant with capacity of 1,100 m³/day was operated for 8 months in Singapore. The result showed stable trans membrane pressure (TMP) and low permeate turbidity below 0.1 NTU at 25 LMH. It also showed 60 times less energy consumption than conventional MBR. Low dissolved oxygen in membrane tank resulted in higher nitrogen removal. Long-term reciprocation requires very strong membrane modules. Braid reinforced membrane and its modules were optimized to reciprocation. The evaluation of them after the operation showed there was no change in all their properties.