As water resources are limited and legal regulations are strengthened, there is a growing need to reuse residuals in WTP(Water Treatment Plant). In this study, membrane filtration system was constructed and its operation method was studied for water quality stabilization and reuse of WTP residuals. The operation parameters were stable for 1 year and 6 months. Membrane fouling was identified as particulate pollution (activated carbon) and inorganic pollution (manganese). The membrane system was operated steadily with raw water of high concentration SS(Suspended solid) containing activated carbon because membrane fouling was reduced by the effect of End-Free type. In the case of inorganic contamination, dissolved manganese eluted by chemicals and acted as a membrane fouling source, and the operating conditions for minimizing membrane fouling were confirmed by newly developing application methods and types of cleaning chemicals. Based on the results, design parameters for reducing manganese membrane fouling were derived.

ABSTRACT
1. 서 론
2. 연구방법 혹은 재료 및 실험방법
    2.1 대상 정수장
    2.2 연구 설비
    2.3 운전 조건
3. 결 과
    3.1 막여과 시설 운영 결과
    3.2 원수 성상에 따른 막여과 발생 경향
4. 결 론
References

• 김준현(인천광역시 상수도사업본부 수질연구소) | Jun-Hyun Kim (Incheon Water Quality Institute)
• 장정우(㈜에코니티) | Jung-Woo Jang (Econity)
• 김진호(㈜에코니티) | Jin-Ho Kim (Econity)
• 박광덕(한국건설기술연구원 국토보전연구본부) | Kwang-Duck Park (Department of Land, Water and Environment Research, Korea Institute fo Civil Engineering and Building Technology) Corresponding author