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호기성 SBR공정에 의한 비이온성 계면활성제 NPEO 의 제거
범진영,이석헌 대한상하수도학회 2002 상하수도학회지 Vol.16 No.5
Removal of non-ionic surfactant, nonylphenol ethoxylate (NPEO), by aerobic sequencing batch reactor was investigated using lab scale experimental apparatus. Bio-degradation of NPEO resulted in ethoxylate chain shortening and nonylphenol (NP) production. About 5mg/L of NPEO was introduced and only < 0.09mg/L of NPEO and NP was detected in treated effluent. During the aeration, NPEO and NP in mixed liquor were also reduced. Most of NP and short-chained NPEO were detected in solid phase. Anaerobic condition provided during settling of sludge and decanting of treated effluent caused increase of NP in sludge.