석면제거장치를 활용한 토양 현장정화의 효율성 평가
Development and In-situ Application of Asbestos Removal Equipment for Asbestos-contaminated Soils
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참고문헌
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초록
본 연구는 국내에 적용 가능한 토양 중 섬유상 물질을 제거하는 장치를 개발하여, 현장 적용성을 평가하는 것이다. 이를 위하여 인위적으로 토양 중 비산성 석면을 포집하는 석면정화장치를 개발하였으며, 최적구동인자를 확인하고 지목별 정화효율을 평가하였다. 최적 구동인자 브러시 200 rpm, 교란 및 흡입풍속 3 m/s, 이동속도 0.1 m/s, 정화반복횟수 20회를 적용하여 학교, 과수원, 전(밭) 등 다양한 지목에서 정화 전, 후 토양 및 포집된 대기시료를 분석하였다. 학교의 경우, 18.414 f/cc, 과수원 6.618 f/cc, 전(밭) 53.187 f/cc의 섬유상 물질을 포집하였으며, 토양분석결과 최대 정화 전 1%의 오염토양을 0.5%로 감소시키며 약 50%의 정화 효율을 보였다. 단 토양 교란 및 함수율 저감 장치를 추가 보완하여, 향후 정화장치를 개발하면 다양한 석면오염 토양개량복원 사업에 활용될 수 있을 것으로 사료된다.
Abstract
The objective of this study is to develop removal equipments of fibrous materials including friable asbestos in soils. Asbestos removal equipment, was invented using artifical friability and its optimun working conditions were examined. Then, the suggested working conditions such as 200 rpm of rotation for brush, 3 m/s of inhale velocity and 0.1 m/s of moving equipment velocity were applied in the field. Soil samples were collected from various places including playground of elementary school, orchard and farmland and then analyzed with 20 retuning times in order to measure asbestos concentration before and after remediation. The collected asbestos from the soils by the developed equipment were 18.414 f/cc, 12.668 f/cc and 104.310 f/cc for playground, orchard and farmland respectively. Asbestos contents in soils were decreased from 1% to 0.5% with 50% removal effectiveness before and after soil remediation using the developed equipment. Additional facilities reducing soil water contents and disturbing the contaminated soil are suggested to improve the asbestos removal efficiency of the developed equipment.
참고문헌 (7)
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