Membrane bioreactor (MBR) provides the benefits on high effluent quality and construction cost without the secondary clarification. Despite of these advantages, fouling, which clogs the pore in membrane modules, affects the membrane life span and effluent quality. Studies on the laboratory scale MBR were focused on the control of particulate fouling, organic fouling and inorganic fouling. However, less studies were focused on the control of biofouling and microbial aspect of membrane. In the full scale operation, most MBR produces high effluent quality to meet the national permit of discharge regulation. In this study, the performance and microbial community analysis were investigated in two MBRs. As the results, the performance of organic removal, nitrogen removal, and phosphorus removal was similar both MBRs. Microbial community analysis, however, showed that Azonexus sp. and Propionivibrio sp. contributed to indirect fouling to cause the chemical cleaning in the DX MBR.

1. 서 론
2. 연구방법
    2.1 MBR 처리시설 분석
    2.2 수질 분석
    2.3 미생물 분석
3. 결과 및 고찰
    3.1 MBR 처리장의 영양물질 분해 분석
    3.2 SS 및 Total Coliforms 제거
    3.3 분리막 세정 및 막오염 제어
3.4 MBR 공정 미생물 비교를 통한 막공정 효율 분석
4. 결 론
사 사
References

• 김승원(한국교통대학교 환경공학과) | Seungwon Kim (Department of Environmental Engineering, Korea National University of Transportation)
• 최정동(한국교통대학교 환경공학과) | Jeongdong Choi (Department of Environmental Engineering, Korea National University of Transportation) Corresponding Author