Journal of Korean Society on Water Environment (한국물환경학회지)

Korean Society on Water Environment (한국물환경학회)
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Removal Efficiency of TSS Loadings from Expressway by Road Sweeping and Sand Filter Facility Using ROADMOD

ROADMOD를 이용한 도로청소 및 모래여과시설에 의한 고속도로에서의 강우시 TSS 저감효과 분석

  • Heeman Kang (Korea Expressway Corporation Research Institute) ;
  • Ji-Hong Jeon (Department of Environmental Engineering, Andong National University)
  • 강희만 (한국도로공사 도로교통연구원 환경연구실) ;
  • 전지홍 (국립안동대학교 환경공학과)
  • Received : 2022.12.22
  • Accepted : 2022.12.28
  • Published : 2023.01.30
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Abstract

In this study, the removal efficiency of road sweeping and sand filter facility for removing total suspended solid (TSS) as nonpoint source pollution from expressway was evaluated for the last 10 years (2012~2021) using ROADMOD. ROADMOD is a screening level model and was calibrated for runoff rate and TSS loading both at the inlet, which is the loading from the drainage area, and the outlet, from the sand filter facility. The drainage area is 715 m2 and the dimensions of sand filter facility are 1.5 m (wide) × 3.8 m (length) × 1.5 m (depth). The monitoring period for model calibration was the rainfall event during Aug. 31~Sep. 1, 2021 and the amount of rainfall was 74.5 mm. As a result of calibration, the determination coefficients (R2) of the flow rate were 0.66 and 0.86, for the inlet and outlet, respectively, and those of TSS loading were 0.50 and 0.84, for the inlet and outlet, respectively. Considering that ROADMOD is a screening level model, the calibration results were reasonable to evaluate the best management practices (BMPs) on the expressway. Using ROADMOD simulation results for 2012~2021, the average yearly runoff rate from the expressway was 82% and removal efficiency was 9% for road sweeping, 35% for sand filter facility, and 39% for both road sweeping and sand filter facility.

Keywords

Acknowledgement

이 논문은 안동대학교 기본연구지원사업에 의하여 연구되었음.

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