This work was performed to develop a dip injection wet scrubber (DIWS) system with chlorine dioxide as the oxidant. The exhaust pollutants from a lime kiln of paper-mill were introduced to the system. When NaClO3 was used to oxidize NO into NO2, the oxidation was unsatisfactory and the combination of HNO3 or H2SO4 was required for 100% oxidation. ClO2 is recommended to oxidize NO and SO2 effectively. With the combination of 1st stage of DIWS and ClO2, 57.1% of NOx and 98% of SO2 were effectively removed. In the case of 2nd stage of DIWS and ClO2, 93.5% of NOx and 99% of SO2 were removed. The ClO2+DIWS process was superior to the ClO2+Scrubber process in terms of investment, running cost and NOx removal efficiency.

Abstract
1. 서 론
2. 재료 및 실험방법
    2.1. 재료 및 실험 장치
    2.2. 실험 방법
3. 결과 및 고찰
    3.1. NaClO3에 의한 NOx 제거
    3.2. ClO2에 의한 NOx, SOx 제거
    3.3. DIWS 1단 입구에 ClO2 분사
    3.4. DIWS 2단 입구에 ClO2 분사
    3.5. ClO2+Scrubber과 ClO2+DIWS 공정 비교
4. 결 론
REFERENCES

• 정재억(부산가톨릭대학교 환경공학과) | Jae-Ouk Jung (Department of Environmental Engineering, Catholic University of Pusan, Busan 46252, Korea)
• 정용준(부산가톨릭대학교 환경공학과) | Yong-Jun Jung (Department of Environmental Engineering, Catholic University of Pusan, Busan 46252, Korea) Corresponding author