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하수도 준설토 재활용에 관한 기초 연구

A Basic Study on the Recycling of Dredged Sewage Sediment

  • 김홍민 (해동종합건설) ;
  • 최윤정 (세명대학교 바이오환경공학과) ;
  • 윤석표 (세명대학교 바이오환경공학과) ;
  • 김준경 (세명대학교 소방방재학과)
  • Kim, Hong Min (Haedong Construction Company) ;
  • Choi, Yun Jeong (Department of Biological and Environmental Engineering, Semyung University) ;
  • Yoon, Seok-Pyo (Department of Biological and Environmental Engineering, Semyung University) ;
  • Kim, Jun Kyoung (Department of Fire and Disaster Prevention, Semyung University)
  • 투고 : 2018.08.22
  • 심사 : 2018.09.12
  • 발행 : 2018.09.30

초록

하수도 준설토를 재활용하기 위해 준설토의 입경과 유기물 함량을 분석하였다. 실험결과 유기물 함량이 상대적으로 낮은 1.0 mm 이상의 입자의 경우 체선별 하여 잔골재로 재활용할 수 있을 것으로 판단된다. 5 mm 이상의 입경에서는 무기성이지만 잔골재 이외의 이물질이 다수 함유되어 있어 이들도 체로 사전에 제거할 필요가 있었다. 1.0 ~ 5.0 mm 사이의 체선별한 성분 중에는 부유성의 유기물질이 존재하므로 이들은 부유선별방법을 통하여 제거하였다. 사전 체선별 후 부유선별 방식을 통해서 하수도 준설토에서 잔골재를 얻을 수 있었으며, 본 연구에서 얻어진 잔골재의 비율은 38 % 수준이었다.

In order to recycle sewage dredging soil, we analyzed particle size distribution and organic content of dredged sewage sediments. Based on this, it was determined that particles with relatively low organic content of 1.0 mm or more could be recycled as fine aggregate. Although it was inorganic at the size of 5 mm or more, it contained a number of foreign substances other than fine aggregate, which were needed to be removed with a sieve. Since there are volatile suspended solids between 1.0 and 5.0 mm size, they were removed by means of flotation. Fine aggregate was obtained from dredging soil by screening followed with flotation method, and the proportion of fine aggregate obtained in this study was around 38 %.

키워드

참고문헌

  1. 2016 Sewage statistics, Korea Ministry of Environment, (2018).
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  3. Dongkuk University Institute of Industrial Technology, A Study on the hazard evaluation and reuse of dredging soil in sewage, pp. 10-121. (2005).
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피인용 문헌

  1. 하수슬러지 가용화와 체외고분자물질(EPS)간의 관계 vol.27, pp.4, 2019, https://doi.org/10.17137/korrae.2019.27.4.43