International Journal of Highway Engineering (한국도로학회논문집)

Korean Society of Road Engineers (한국도로학회)
권호 표지

Characteristics of Particle Size Distribution and Heavy Metal Concentration in Pavement Road Runoff

포장지역 강우유출수에서의 입자성물질의 입도 분포 및 중금속 특성에 관한 연구

  • 박해미 ((주)동호 상하수도부) ;
  • 김영준 (경희대학교 대학원 토목공학과) ;
  • 고석오 (경희대학교 공과대학 토목공학과)
  • Received : 2009.07.01
  • Accepted : 2009.07.23
  • Published : 2009.09.15
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Abstract

Objective of this study was to characterize the particle size distribution(PSD) and quantify the pollutant concentration in highway runoff. Runoff samples during two rainfall events at four road sites in Gyunggi-Do were collected and PSD and associated pollutant distribution was quantified. Also, rainfall amount, flow rate, and other pollutants in samples were analyzed. PSDs in each sample were analyzed and compared with temporal trends of other pollutants. High partial event mean concentrations(PEMC) of particulates were observed at the beginning of runoff and rapid decrease thereafter. Other pollution parameters such as turbidity, TSS, BOD, TN, and TP also have similar temporal runoff trend with the PEMC. Especially PEMC was well correlated with total suspended solids(TSS) and turbidity. Cu, Pb, Zn had high concentration both runoff and sediment. Heavy metals in sediment were strongly bound to fine particles that have the large surface area-to-volume ratios.

본 연구는 고속도로 강우 유출수에서 입도 크기 분포 특성(PSD)을 이해하기 위하여 수행하였다. 경기도내 4곳의 포장도로 지역에서 2번의 강우사상동안 강우유출수 샘플 모니터링을 수행하였고, 시료내 입자의 크기분포를 분석하였다. 또한, 강우량, 유량 및 각 오염물질들을 분석하였다. 시료내 입자의 시간별 변화농도는 강우유출수의 시작 시 높은 값을 보였다가 급속히 감소하였으며 탁도, 총부유물질, BOD, 총질소 및 총인과 같은 오염물질과 유사한 유출경향을 보여주었다. 특히 총부유물질과 탁도와의 높은 상관성을 보여주었다. 강우유출수와 퇴적물내에 포함된 중금속에 있어서 구리, 납, 아연은 높은 농도를 보였으며 대부분의 중금속은 넓이에 대한 부피의 비율이 큰 세립입자에 강하게 결합된 형태로 존재한다.

Keywords

References

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