Abstract
Solid particles, particularly urban surface dust in urban environments contain large quantities of pollutants. It is considered that urban surface dust is a major pollution source of urban stormwater runoff. The stormwater runoff washes away urban surface dust and dissolves pollutants adsorbed onto the dust and finally discharges into receiving water bodies. The quality of receiving water bodies can be deteriorated by the dust and pollutants in it. Polluted waters can be purified by wetlands with various physical, chemical, and biologic processes. These processes have been employed to treat pollutants in urban stormwater runoff for many years because purification of treatment wetlands is a natural process and a low-cost method. In this paper, we reviewed the processes involved during pollutants transport in urban environments. Particularly, when the urban stormwater runoff enters into wetlands, their removal mechanisms involving various physical, chemical and biologic processes should been understood. Wetlands can remove heavy metals by absorbing and binding them and make them form a part of sediment. However, heavy metals can be released into water when the conditions changed. This information is important for the use of wetlands for removing of pollutants and reusing stormwater.
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Mr. Zhiming Zhang obtained his B.S. and M.S. degrees in Geography, Anhui Normal University, China. He is current a doctoral candidate of School of Environment, Beijing Normal University. His area of expertise includes controlling of contamination and wetlands resources management.
Dr. Baoshan Cui is a research professor of environmental ecology in School of Environment, Beijing Normal University (BNU). He is an environmental scientist with about twenty years professional experience, and holds M.S. and Ph.D. degrees from Northeast Institute of Geography, Chinese Academy of Sciences (CAS). He has ever been involved in and finished about 30 projects. His publications include 4 books and over 180 refereed journal articles and conference papers in international science journals. He has wide experience in management and research administration, including service as vice rector of School of Environment, BNU, vice director of China Society of Natural Resources Wetland Protection Committee and Wetland Ecology Committee of Ecology Society of China, commissioner of Chinese Hydraulic Engineering Society Water Recourse Committee, commissioner of National Wetland Science and Technology Expert Committee, member of Wetlands Export Team in China State Forestry Bureau, guest professor in Beijing Wetlands Research Center, vice director of Environmental Geography Branch of Chinese Society for Environmental Sciences and adjunct professor in Yantai University. His research has driven the subject construction of environmental science, and also focused on the quick and efficient developments in the field of environmental ecology and ecological water conservancy.
Miss. Xiaoyun Fan obtained her M.S. degree in College of Resources and Environmental Sciences, China Agricultural University. She is current a doctoral candidate of School of Environment, Beijing Normal University. She is familiar with the landscape planning and wetland ecology.
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Zhang, Z., Cui, B. & Fan, X. Removal mechanisms of heavy metal pollution from urban runoff in wetlands. Front. Earth Sci. 6, 433–444 (2012). https://doi.org/10.1007/s11707-012-0301-7
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DOI: https://doi.org/10.1007/s11707-012-0301-7