화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Clean Technology, Vol.23, No.3, 302-307, September, 2017
DOI10.7464/ksct.2017.23.3.302  Export Citation
유류오염토양 처리를 위한 컬럼식 토양세정기술 평가
Evaluation of Soil Flushing Column Test for Oil-contaminated Soil Treatment
강희천, 한병기1, 김정대2, 서승원3, 신철호4, 박준석1, †
  • (재)환경기술정책연구원, 02841 서울 성북구 안암로 145
  • 1강원대학교 지구환경시스템공학과, 25913 강원도 삼척시 중앙로 346
  • 2한림성심대학교 보건환경과, 24210 강원도 춘천시 동면 장학길 48
  • 3(주)동명엔터프라이즈, 06245 서울 강남구 역삼동 839-11
  • 4(재)서해환경과학연구소, 54817 전북 전주시 덕진구 호성동 1가 175
Hui-Cheon Kang, Byeong-Gi Han1, Joung-Dae Kim2, Seung-Won Seo3, Chul-Ho Shin4, and Joon-Seok Park1, †
  • National Environment Lab., 145 Anam-ro, Seongbuk-gu, Seoul 02841, Korea
  • 1Department of Earth & Environmental Engineering, Kangwon National University, 346 Joongang-ro, Samcheok-si, Gangwon-do 25913, Korea
  • 2Department of Health & Environment, Hallym Polytechnic University, 48 Janghak-gil, Dong-myeon, Chuncheon, Gangwon-do 24210, Korea
  • 3Department of Environmental Business, Dongmyung Ent. Co., Ltd., 839-11 Yeoksam-dong, Gangnam-gu, Seoul 06245, Korea
  • 4Seohae Environment Science Institute, 175 1-ga, Hoseong-dong, Deokjin-gu, Jeonju, Jeonrabuk-do 54817, Korea
E-mail:
초록
본 연구는 오염현장에서 채취한 유류오염토양을 in situ 토양세정법으로 정화시 기술 적용성을 평가하기 위한 컬럼식 실험이다. 실험에 사용한 오염토양의 토성은 사토(sand)이었으며, 초기 TPH 오염농도는 9,369 mg kg-1이었다. 세정용액으로 0.1% Tween-80을 사용하였으며, 반응기로는 아크릴 원형컬럼과 유리 시린지컬럼을 사용하였다. 아크릴 원형컬럼 실험에서 0.1% Tween-80을 1 PV 주입하였을 때 토양 TPH의 35%가 제거되었고 이후 5 PV까지도 제거효율이 약 40% 정도로 큰 증가가 나타나지 않았으나 7 PV 주입하였을 때 약 60%가 제거되었다. 아크릴 원형컬럼 대신 유리 시린지컬럼을 사용하여 체류시간을 증가시키자 5 PV까지는 아크릴 원통컬럼을 사용한 경우보다 제거효율이 전반적으로 약 3 ~ 12% 높았으나 7 PV을 모두 주입하였을 때의 제거효율은 약 60%로 서로 차이가 없었다. 단독 alum과 alum+polymer 혼합응집제를 사용하여 폐세정액을 응집처리한 결과 최적 주입농도는 두 경우 모두 150 mg L-1인 것으로 나타났다. 응집처리한 Tween-80 폐세정액에 Tween-80을 0.1% 농도로 새로 용해하여 재사용 세정을 실시한 결과의 제거효율은 41.0%로 재사용하지 않은 0.1% Tween-80의 32.0%보다 약 9% 높게 나타났다.
This study was conducted to evaluate the feasibility of in situ soil flushing for TPH-contaminated soil remediation with column test. The soil texture of the soil was sand and the initial TPH concentration was 9,369 mg kg-1. 0.1% Tween-80 was selected as surfactant solution. And the acrylic and the glass syringe columns were used as reactors. In the acrylic column test, 35% of the initial TPH was removed in 1 PV of flushing and approximately 40% in 5 PV and finally 7 PV showed about 60%. The glass column test showed 3 ~ 12% higher removal efficiency than that of acrylic test until 5 PV of flushing. However, there was no difference in TPH removal efficiency when 7 PV of surfactant was finally flushed. Both of alum only and alum+polymer mixed surfactants showed also the best coagulation efficiency in 150 mg L-1 of concentraion. When Tween 80 was newly dissolved in 0.1% to the recovered solution after the coagulation treatment, the removal efficiency was increased from 32.0% to 41.0% in comparison to the new 0.1% Tween 80 solution without reuse by coagulation treatment.
Keywords:Soil flushing;Column test;TPH (total petroleum hydrocarbon);Surfactant
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