Heavy Metal Emission Characteristics of Urban Road Runoff

Authors

  • Xintuo Chen Institute of Water Environment Research, Chengdu Research Academy of Environmental Protection Science, Chengdu, China;Environmental Monitoring and Analysis Laboratory, Chengdu Research Academy of Environmental Protection Science, Chengdu, China
  • Chengyue Lai Institute of Water Environment Research, Chengdu Research Academy of Environmental Protection Science, Chengdu, China;Environmental Monitoring and Analysis Laboratory, Chengdu Research Academy of Environmental Protection Science, Chengdu, China
  • Yibin Yuan Institute of Water Environment Research, Chengdu Research Academy of Environmental Protection Science, Chengdu, China
  • Jia She Institute of Water Environment Research, Chengdu Research Academy of Environmental Protection Science, Chengdu, China;Institute of Model Research and Application, Chengdu Research Academy of Environmental Protection Science, Chengdu, China
  • Yiyao Wang Institute of Water Environment Research, Chengdu Research Academy of Environmental Protection Science, Chengdu, China
  • Jiayang Chen Chengdu Experimental Primary School, Chengdu, China
  • Zhaoli Wang Institute of Water Environment Research, Chengdu Research Academy of Environmental Protection Science, Chengdu, China;Environmental Monitoring and Analysis Laboratory, Chengdu Research Academy of Environmental Protection Science, Chengdu, China;Institute of Model Research and Application, Chengdu Research Academy of Environmental Protection Science, Chengdu, China
  • Ke Zhong Institute of Water Environment Research, Chengdu Research Academy of Environmental Protection Science, Chengdu, China;Institute of Watershed Research, Chengdu Research Academy of Environmental Protection Science, Chengdu, China

DOI:

https://doi.org/10.30564/jees.v2i1.1711

Abstract

Pavement runoff sampling points were set up on the main roads of Chengdu city. Six rainfall-runoff events from July to September in 2017 were sampled by synchronous observation of rainfall, runoff and pollution. The concentration changes of copper, lead, zinc, chromium and cadmium in the runoff process were monitored, and the pollution emission regularity and initial scouring effect were studied. The results show that the emission regularity of pavement runoff pollution is closely related to rainfall characteristics and pollutant occurrence, and the concentration of dissolved heavy metals reaches its peak at the initial stage of runoff. The peak time of particulate heavy metal concentration lagged slightly behind that of rainfall intensity. There is a big difference between the strength of initial scouring degree and dissolved heavy metals the stronger the initial scouring degree of total heavy metals, the weaker the dissolved heavy metals. Reducing pavement runoff in the early stage of rainfall is an effective means to control heavy metal pollution.

Keywords:

Heavy Metal; Pavement Runoff; Emission Characteristics; Flush Effect; Pollutant

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How to Cite

Chen, X., Lai, C., Yuan, Y., She, J., Wang, Y., Chen, J., Wang, Z., & Zhong, K. (2020). Heavy Metal Emission Characteristics of Urban Road Runoff. Journal of Environmental & Earth Sciences, 2(1), 21–30. https://doi.org/10.30564/jees.v2i1.1711

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