• 제목/요약/키워드: Contaminated site

검색결과 468건 처리시간 0.033초

중금속 및 유류로 오염된 토질의 성토재료로서의 안정성에 관한 연구 (The Research on The Stability as Fill Material of Soil Defiled by Oil Element and Heavy Metals)

  • 이충숙;엄태규;최용규;이민희
    • 한국지반환경공학회 논문집
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    • 제5권2호
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    • pp.5-13
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    • 2004
  • 아파트 건설용 부지내에서 중금속 및 유류로 오염된 토사가 발견되었다. 7개 위치에서 대표적인 시료를 채취하였으며 이 오염된 토사의 지반공학적 안정성을 확인하기 위하여 중금속 및 유류에 대한 환경공학적 검토가 이루어졌다. 2개 위치의 토사는 유류로 심하게 오염되어 있어 현장의 특정지역으로 반출하여 폐기해야 하는 것으로 판단하였다. 토양오염우려수준인 1개 위치의 토사에 대하여 성토재로서의 활용가능성을 확인하기 위하여 성토 안정성에 대한 해석을 수행하였으며 성토재로 사용할 수 있는 것으로 판단하였다.

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Study for Phytostabilization using Soil Amendment and Aster koraiensis Nakai in Heavy Metal Contaminated Soil of Abandoned Metal Mine

  • Jung, Mun-Ho;Lee, Sang-Hwan;Ji, Won-Hyun;Park, Mi-Jeong;Jung, Kang-Ho
    • 한국토양비료학회지
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    • 제49권5호
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    • pp.627-634
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    • 2016
  • The objectives of this study were to select optimal soil amendments through analysis of heavy metal availability in soil and uptake to Aster koraiensis Nakai for forest rehabilitation of heavy metal contaminated soil of abandoned metal mine. A. koraiensis was cultivated for 6 months at contaminated soil with several soil treatments (bottom ash 1 and 2%, fly ash 1 and 2%, waste lime+oyster 1 and 2%, Acid mine drainage sludge (AMDS) 10 and 20%, compost 3.4%, non-contaminated natural forest soil, and control). The analysis results of heavy metal concentrations in the soil by Mehlich-3 mehthod, growth and heavy metal concentrations of A. koraiensis showed that waste oyster+lime 1% and compost were more effective than the other amendments for phytostabilization. However, it is needed comprehensive review of factors such as on-site condition, slope covering to reduce soil erosion and vegetation introduction from surround forest for revegetation to apply forest rehabilitation.

Distribution of Heavy Metal Content in Plants and Soil from a Korean Shooting Site

  • Baek, Kyung-Hwa;Kim, Hyun-Hee;Park, Jin-Sung;Bae, Bumhan;Chang, Yoon-Young;Lee, In-Sook
    • The Korean Journal of Ecology
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    • 제27권4호
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    • pp.231-237
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    • 2004
  • In this research we determined the levels of heavy metals in soil and metal-accumulating plants from a D military shooting site in the Kyungkido district of Korea. The data obtained may be useful in the development of methods for the efficient phytoremediation of contaminated soil. The total Cd, Cu, Pb, and Zn concentrations in the soil were found to be 1.67-5.04 mg/kg, 52.51-106.26 mg/kg, 37.24-90.32mg/kg, and 111.45-188.19mg/kg, respectively. These results show that the soil is contaminated with Cd and Cu, and this contamination is particularly severe in the case of Cd because of its high bioavailability (25-57% of the total metal in the soil is exchangeable). The high concentrations of heavy metals in the shoots of Persicaria thunbergii and Artemisia princeps var. orientalis indicate that these plants (all perennial herbs) accumulate heavy metal efficiently. Further, these plants were found to contain more Cd in its shoots (>60% of the total metal found in the plant) than any other plant; these results indicate that these native species are particularly suited to use in Cd phytoextraction.

Logistical Simulation for On-site Concrete Waste Management in Decommissioning

  • Lee, Eui-Taek;Kessel, David S.;Kim, Chang-Lak
    • 방사성폐기물학회지
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    • 제17권4호
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    • pp.389-403
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    • 2019
  • Large amounts of concrete waste are likely to arise from the decommissioning of a Kori-1 nuclear power plant. Several studies have been conducted on decommissioning concrete waste in recent decades, however, they have been limited to contaminated concrete issues or were small pilot-scale experiments. This study constructed two industrial-scale models of on-site concrete waste management for clean as well as contaminated concrete. To evaluate the performance of both the models, simulations were conducted using the Flexsim software. The concrete particle size distribution of Kori-1 and concrete processor properties based on widely used construction equipment were used as sources of input data for the simulations. It was observed that it may take over two years to complete the on-site concrete management processes owing to the performance of existing processors. In addition, it was demonstrated that it is essential to identify bottlenecks in the system and enhance the performance of the relevant processors to avoid delays of the decommissioning schedule. Our results suggest that this novel approach can contribute to developing schedules or expediting delayed activities in the Kori-1 decommissioning project.