In this study, to stabilize the heavy metal in the contaminated soils, the column leaching test based on rainfall and pH value was performed by using coal mine drainage sludge(CMDS): which was generated during electrical purification of abandoned coal mine wastewater. Four types of testing column were used in this study. That were the CMDS and the heavy metal contaminated soils well mixed in 0 wt%, 1 wt%, 3 wt% and 3 wt% layered column. According to the investigation, when the influent pH was 5.5∼6.2, there were no heavy metal elution at all conditions, and when the influent pH was 3∼3.3, the order of Cu, Zn, Pb, Cr elution concentration was 3 wt% M(mixed)＜3 wt% S(separation)＜1 wt% M＜0 wt% and the average elution concentration was quite low, the value was 0.005 mg/L. Therefore, CMDS can used as new stabilizer of the heavy metal in the contaminated soils.

• Cui Mingcan(고려대학교 건축사회환경공학과) | Mingcan Cui
• 임정현(고려대학교 건축사회환경공학과) | Jung hyun Lim
• 손영규(고려대학교 건축사회환경공학과) | Younggyu Son
• 장민(한국광해방지 관리공단) | Min Jang
• 심연식(한국광해방지 관리공단) | Yonsik Shim
• 김지형(고려대학교 건축사회환경공학과) | Jeehyeong Khim Corresponding Author