This study was performed to evaluate the pollutants removal characteristics of two types of RBFs(Riverbank filtration, Riverbed filtration) intake facilities installed in Nakdong River and in Hwang River respectively. The capacity of each RBF is 45,000 ㎥/d for riverbank filtration intake facility and 3,500 ㎥/d for riverbed filtration intake facility. According to data collected in the riverbank filtration site, removal rate of each pollutant was about BOD(Biochemical oxygen demand) 52%, TOC(Total organic carbon) 57%, SS(Suspended solids) 44%, Total coliforms 99% correspondingly. Furthermore, Microcystins(-LR,-YR,-RR) were not found in riverbank filtered water compared to surface water in Nakdong River. DOC(Dissolved organic carbon) and Humics which are precursors of disinfection byproduct were also reported to be removed about 59% for DOC, 65% for Humics. Based on data analysis in riverbed filtration site in Hwang River, removal rate of each contaminant reaches to BOD 33.3%, TOC 38.5%, SS 38.9%, DOC 22.2%, UV254 21.2%, Total coliforms 73.8% respectively. Additionally, microplastics were also inspected that there was no obvious removal rate in riverbed filtered water compared to surface water in Hwang River.

1. 서 론
2. 연구방법
    2.1 대상 및 조사지점
    2.2 조사항목
3. 결과 및 고찰
    3.1 강변여과수 수질개선 효율 비교
    3.2 복류수 수질개선 효율 비교
    3.3 강변여과수와 복류수 수질개선 특성 비교
4. 결 론

• 정찬우(K-water 수도개발처) | Chan-woo Jeong (K-water, Water Supply Development Department) Corresponding author
• 이선익(K-water 수도개발처) | Sun-ick Lee (K-water, Water Supply Development Department)
• 신성우(K-water 수도개발처) | Sung-woo Shin (K-water, Water Supply Development Department)
• 송창현(K-water 수도개발처) | Chang-hyun Song (K-water, Water Supply Development Department)
• 조부근(K-water 수도개발처) | Bu-geun Jo (K-water, Water Supply Development Department)
• 최재원(K-water 물환경안전처) | Jae-won Choi (K-water, Water Environmental Safety Management Department)