2011•Anhui nongye kexueRequires access
Study on Pollution Characterization of Rainfall Runoff in Hefei Campus Area
Xie Ji-feng, Ting Xu, HU Zhixin, Cai Zuo, Zhu Chaoyun
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Abstract
[Objective] The aim was to study the pollution characterization of rainfall runoff of two different underlying surface,roof runoff and road runoff,in Hefei campus area.[Method] Choosing SS,CODCr,TN and TP as the main analyzing items of water quality,the distinction law and characterization of contamination from roof runoff and road runoff collected in 4 rainfall events in urban campus area of Hefei in 2010 were analyzed,and their difference was compared.[Result] The pollution loading of rainfall runoff in Hefei campus area was high,and the main contamination concentration was high at the initial stage commonly,while at the later stage the concentration was decreased with prolonging of the rainfall time and trended stable.The effects of different underlying surface on water characterization of rainfall runoff had great differences.Thereinto,the SS and TP average concentration of road runoff directly effected by human action were significantly higher than that of roof rainfall,while CODCr and TN average concentration of road runoff were a little higher than that of roof rainfall.Atmospheric wet deposition in Hefei contributed a lot to the TN of rainfall runoff.[Conclusion] The study can provide the basis for the reasonable development of the control of the runoff pollution and effective use of rainwater resources in urban area.