Journal of Korean Society on Water Environment (한국물환경학회지)

Korean Society on Water Environment (한국물환경학회)
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Characteristics and Recycling of Sewer Sediments from Land Use

토지이용별 하수관거 퇴적토의 특성과 재활용

  • Won, Chul-hee (Institute of Environmental Research, Kangwon National University) ;
  • Lee, Byung-won (Department of Environmental Engineering, Kangwon National University) ;
  • Choi, Joong-dae (Department of Agricultural Engineering, Kangwon National University) ;
  • Rim, Jay-myoung (Department of Environmental Engineering, Kangwon National University)
  • Received : 2009.03.05
  • Accepted : 2009.04.06
  • Published : 2009.05.30
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Abstract

In this study, research for physical and chemical characteristics were conducted through analysis of sediments, grading and heavy metals (e.g., Mn, Cu, Cd, Zn and Pb ) in sewers which are classified by drainage types. After that, cement solidification and yellow soil calcinations made heavy metals stabilized and then, ways of recycling it were examined. The grain size distribution of all sediments was relative graded. When evaluating heavy metal pollution through index of geoaccumulation (Igeo), Cu showed moderately pollution or strong pollution in forest and street site and Zn was assessed by moderately pollution in military, residential, and street site. Analysis of Pearson Correlation coefficient of heavy metal indicated that all items in street site have tight relationship respectively. Especially, Cd-Zn, Cu-Pb, Cu-Mn, and Pb-Mn have relationship at 99% confidence intervals in statistical analysis. Recycling it with cement solidification was satisfied with compressive strength standard under 55% deposit contents and Zn, Pb, Mn were stabilized effectively. If time and temperature plasticity and compressive strength would be standard, it is revealed that yellow soil calcinations is valuable aggregate when it has 50-60 Wt% contents. When considering economic feasibility and stabilization of heavy metals, cement solidification would be more appropriate than yellow soil calcinations as solution to recycling.

Keywords

Acknowledgement

Supported by : 환경부

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