Journal of Korean Society of Environmental Engineers (대한환경공학회지)

Korean Society of Environmental Engineers (대한환경공학회)
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Runoff Characteristics of Non-Point Sources on the Stormwater

강우에 의한 도로 비점오염원 유출 특성

  • Kim, Seog-Ku (Korea Institute of Construction Technology, Construction Environment Research Department) ;
  • Kim, Young-Im (Korea Institute of Construction Technology, Construction Environment Research Department) ;
  • Kang, Sung-Won (Korea Institute of Construction Technology, Construction Environment Research Department) ;
  • Yun, Sang-Leen (Korea Institute of Construction Technology, Construction Environment Research Department) ;
  • Kim, So-Jung (Korea Institute of Construction Technology, Construction Environment Research Department)
  • 김석구 (한국건설기술연구원 건설환경연구부) ;
  • 김영임 (한국건설기술연구원 건설환경연구부) ;
  • 강성원 (한국건설기술연구원 건설환경연구부) ;
  • 윤상린 (한국건설기술연구원 건설환경연구부) ;
  • 김소정 (한국건설기술연구원 건설환경연구부)
  • Published : 2006.01.31
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Abstract

Growth in population and urbanization has progressively increased the loadings of pollutants from non-point sources as well as point sources. Accordingly, release of contaminants from non-point sources, released with surface runoff of rainwater, is influenced by atmospheric phenomena, geology, and topography. This makes the control of non-point source difficult. Therefore, this study intends to reveal the characteristics of runoff and particle size distribution to observe the fundamental characteristics of runoff. Experiments were carried out at inner road of research center. Average concentration of runoff ranged from 26.8 to 126.4 mg/L for SS and $COD_{Cr}\;15.3{\sim}117.7mg/L,\;TN\;0.07{\sim}5.16mg/L,\;TP\;0.06{\sim}0.49mg/L$ and heavy metals $0.00{\sim}0.29mg/L$. First flush, indicated wash off of pollutant at first rain, was observed for all types of pollutants. Most pollutants revealed a very close correlation with SS ($R^2=0.93{\sim}0.99$). After analyzing characteristics of particle, particle was finer than that from previously examined data.

도시화로 인해 증가하고 있는 불투수층은 강우시 지표면 유출수와 함께 유출되는 비점오염물질의 유출량을 증가시킨다. 비점오염원은 인위적인 조절이 어려운 기상, 지형 등의 영향을 받는 특성을 지니고 있어 제어가 어렵다. 따라서 비점오염원에 대한 기초적인 조사는 오염물질 유출 저감에 기여할 수 있을 것으로 판단되어 본 연구에서는 오염물질 유출특성과 유출입자의 입도분포를 조사하였다. 본 연구는 연구단지 내 주차장과 인접한 도로에서 진행되었으며, 오염물질의 평균 농도는 $SS\;26.8{\sim}126.4mg/L,\;COD_{Cr}\;15.3{\sim}117.7mg/L,\;TN\;0.07{\sim}5.16mg/L,\;TP\;0.06{\sim}0.49mg/L$, 중금속류 $0.00{\sim}0.29mg/L$의 범위를 나타냈다. 또한 강우에 따라 차이를 보이나 오염물질의 초기 세척효과가 나타났으며, SS와 오염물질의 유출은 $0.93{\sim}0.99$의 높은 상관관계를 나타냈다. 도로면 유출수의 입도 특성을 살펴본 결과, 기존 자료보다 미세한 것으로 관찰되었다.

Keywords

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