Journal of the Korean Recycled Construction Resources Institute (한국건설순환자원학회논문집)

Korean Recycled Construction Resources Institute (한국건설순환자원학회)
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Study on the Recycling of Waste Soil from Constructed Site - Focused on Agricultural Planting Soil -

순환토사 재활용에 관한 연구 - 농업성토용 중심으로 -

  • Kim, Jae-Hyung (Department of Environmental Engineering, Kumoh National Institute of Technology) ;
  • Park, Je-Chul (Department of Environmental Engineering, Kumoh National Institute of Technology)
  • 김재형 (금오공과대학교 환경공학과) ;
  • 박제철 (금오공과대학교 환경공학과)
  • Received : 2018.12.20
  • Accepted : 2019.03.14
  • Published : 2019.03.30
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Abstract

This study has its aim to judge both applicability and suitability of recycling of waste soil for the use of farmland amelioration and low-lying farmland reclamation through growth and development experiment and component analysis. As results of physical characteristic evaluation on recycling of waste soil, the classification based on unified soil classification system has investigated as SW and SP affiliation and soil classification has appeared to be a loamy sand. As results of chemical component analysis, pH has appeared to be 7.0~8.4 which is relatively higher than general soil, however, heavy metal has investigated within the 1 region's standard value of soil pollution standards. As results of germination experiment, when using it by mixing recycling soil less than 75%, there is no significant influence on germination, and in the growth and development experiment, when using horticultural bed soil which is mixed with less than 40% of recycling of waste soil, it has confirmed that there is no significance difference with general soil. In case of farmland, the growth disorder of recycling of waste soil rate no more than 40% has shown that it has relatively small influences, and in case of using it by mixing with agricultural soil, it has evaluated to require concrete review of factors which may restrict growth condition including nutrition and pH.

본 연구에서는 순환토사가 농지개량용으로 적용 가능성이 있는지 그리고 채움재로서의 활용 가능성이 있는지 알아보기 위하여 순환토사의 물리적 화학적 성분 분석을 평가하였고, 비교생육실험 및 발아실험 그리고 식생대층 높이에 따른 생육실험을 진행하였다. 물리적 성분 분석결과 SW와 SP계열로 조사되었으며 토성은 양질사토로 조사되었다. 순환토사를 농지개량용으로 사용하기 위해서는 점토 및 미사와 혼합하여 사용하면 될 것으로 사료된다. 화학적 성분 분석결과 pH는 일반 토양보다 높으나 중금속은 토양오염우려기준의 1지역 기준치 이내로 나타났다. 발아실험결과 순환토사를 75% 미만으로 혼합하여 사용했을때 영향이 거의 없는 것으로 조사되었고, 원예용 상토에 순환토사 40% 미만을 혼합하여 사용하면 생육장해가 미비한 것으로 나타나 일반적인 토양과 차이가 없는 것으로 확인되었다.

Keywords

Table 1. Physical characteristics of recycled soil(recycled aggregate <15mm)

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Table 2. Analysis of particle size distribution of recycled soil

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Table 3. Chemical characteristics of recycled soil(recycled aggregate <15mm)

GSJHDK_2019_v7n1_16_t0003.png 이미지

Table 4. Result of germination experiment by mixing ratio of recycled soil

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Table 5. Result of white radish growth and development by mixing ratio of recycled soil

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Table 6. Result of cabbage growth and development by mixing ratio of recycled soil

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Table 7. Analysis results by mixing ratio of recycled soil

GSJHDK_2019_v7n1_16_t0007.png 이미지

References

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