Journal of Korean Society on Water Environment (한국물환경학회지)

Korean Society on Water Environment (한국물환경학회)
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An estimation method for the maintenance timing of the infiltration trench

침투도랑 시설의 유지관리 시점 산정방법에 관한 연구

  • Lee, Seung Won (Team of Environmental Technology Demonstration, Jeollanamdo Environmental Industries Promotion Institute (JEIPI)) ;
  • Cha, Sung Min (Team of Environmental Technology Demonstration, Jeollanamdo Environmental Industries Promotion Institute (JEIPI))
  • 이승원 (전라남도환경산업진흥원 실증시험팀) ;
  • 차성민 (전라남도환경산업진흥원 실증시험팀)
  • Received : 2019.11.22
  • Accepted : 2020.01.23
  • Published : 2020.01.30
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Abstract

To manage the non-point source pollution and restore the water circulation, many technologies including infiltration or reservoir systems were installed in the urban area. These facilities have many problems regarding maintenance as their operation period becomes lengthier. The purpose of this study was to estimate the optimal maintenance timing through a long-term load test on the infiltration trench as one of the low impact development techniques. An infiltration trench was installed in the demonstration test facility, and stormwater was manufactured by Manual on installation and operation of non-point pollution management facilities from the Ministry of Environment, Korea and entered into the infiltration trench. Particle size distribution (PSD), suspended solids (SS) removal efficiency, and infiltration rate change tests were performed on inflow and outflow water. In case of the PSD, the maximum particulate size in the outflow decreased from 64 ㎛ to 33 ㎛ as the operating duration elapsed. The SS removal efficiency improved from 97 % to 99 %. The infiltration rate changed from 0.113 L/sec to 0.015 L/sec during the operation duration. The maintenance timing was determined based on the stormwater runoff requirements with these changes in water quality and infiltration rate. The methodologies in this study could be used to estimate the timing of maintenance of other low impact development techniques.

Keywords

References

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