Character of heavy metals in rainwater of rainwater and sewage town

摘要

Taking the Daniel Fong and Yulin Village in Beijing as cases to study. the quality characteristics of rainwater runoff and the pollution situation were obtained by monitoring the rainwater samples from the roof and road in different rainfall intensity. The emphasis was placed on the characteristics of four heavy metals (Zn, Cu, Cr and Cd) over time, as well as the relationship between the Concentration of heavy metals and The concentration of suspended solids. The results showed that compared with the roof runoff, surface runoff water quality was poor. At start, the concentration of heavy metals was larger, with the rainfall time, the concentration decreased. The linear correlations of the Concentration between Zn, Cu, Cr, Cd and SS were different. The correlations of the Concentration between Cd and SS was the highest, with a correlation coefficient of 0.6245, its concentration was most significantly impacted by the Concentration of SS.