광해로 인한 중금속 오염지역을 대상으로 오염토양 개량복원을 위한 현장실증시험을 수행하였다. 오염 농경지에 처리구(2m×2m×0.7m)를 설치하여 오염토양만 채운 무처리구와 산업부산물인 제강슬래그를 적당한 혼합비로 채운 후, 관측기간동안 처리구(무처리, 제강슬래그 1%, 제강슬래그 2%, 제강슬래그3%) 내 토양 및 침출수를 채취하여 이화학 분석과 중금속 농도를 분석하여 그 특성을 비교하였다. 그 결과 중금속 성분(Cu, cd, pb, Ca, as)은 무처리보다 안정화 재료를 적용시킨 처리구에서 모두 뚜렷하게 효과를 보였고, 안정화 재료(제강슬래그)의 혼합비 3%~4%에 가장 좋은 효과를 나타내었다.

A long-term field demonstration experiment on selected stabilization methods to reduce the heavy metal mobility in farmland soil contaminated by heavy metals was conducted. The field demonstration experiment was established on the contaminated farmland with wooden plates(thickness=1cm) of which the dimension were width=2m, Length=2m, height=0.7m and filled with treated soil, which was steel refining slag except on control plot. Soil samples in the plots were collected and analyzed during the experiment period after the installation of the plots. The field demonstration experiment results showed that the application ratio of steel refining slag 3% ~ 4% was effective for immobilizing heavy metal components in contaminated farmland soil.