This study focused on natural organic matter and trihalomethane removal by ozonation with various ferrous concentration in surface water. Ozonation is more affected by injection concentration than reaction time. dissolved organic carbon removal rates in ozonation increased with the increase in ferrous concentration. The highest removal was obtained at 6 mg/L of ferrous concentration. When 1 mg/L of ferrous was added with 2 mg/L of ozone concentration, it was found to be a rapid decrease in specific ultraviolet absorbance at the beginning of the reaction because ferrous acts as a catalyst for producing hydroxyl radical in ozonation. As ozone concentration increased, trihalomethane formation potential decreased. When 2 mg/L of ozone was injected, trihalomethane formation potential was shown to decrease and then increase again with the increase in ferrous concentration.

ABSTRACT
1. 서 론
2. 연구방법
    2.1 실험재료
    2.2 오존 산화 장치 및 방법
    2.3 수질 분석
    2.4 분자량 분획 장치 및 방법
    2.5 총트리할로메탄 생성능(Total TrihalomethaneFormation Potential(THMFP))평가
3. 결과 및 고찰
    3.1 오존주입에 따른 철 산화 특성
    3.2 오존 주입에 따른 초기 Fe2+ 농도 별 DOC 제거율
    3.3 오존 주입에 따른 초기 Fe2+ 농도 별 분자크기분포 특성
    3.4 초기 Fe2+ 농도 별 오존 주입에 따른 SUVA 제거율 변화
    3.3 트리할로메탄 생성능(THMFP)
4. 결 론
References

• 곽연우(숭실대학교 화학공학과) | Yeonwoo Kwak (Department of Chemical Engineering, Soongsil University)
• 이슬기(숭실대학교 화학공학과) | Seulki Lee (Department of Chemical Engineering, Soongsil University)
• 장규환(숭실대학교 화학공학과) | Gyuhwan Jang (Department of Chemical Engineering, Soongsil University)
• 홍성호(숭실대학교 화학공학과) | Seongho Hong (Department of Chemical Engineering, Soongsil University) Corresponding author