【摘要】 分析海口市4种主要下垫面的径流水质,研究其污染程度和变化规律,并与国内其他城市进行对比。监测项目包括pH、SS、COD Cr、TN、TP、Pb、Cr、Cd、Zn、石油类。结果表明,各下垫面径流水样水质较好,除路面径流COD Cr超过《地表水环境质量标准》(GB 3838—2002)V类标准2倍,其他水质指标均达到标准要求;各污染物浓度初期较高,随降雨历时降低并趋于稳定,绿地径流污染物浓度下降速率比路面与屋面缓慢;相比国内其他海边城市,海口城区污染程度较轻。更多还原

【Abstract】 Analysis on the water-runoff quality of the four main underlying surfaces in Haikou city.The researches of pollution degree and the change rules are compared with the studies of the other cities.Monitoring projects including:pH,SS,COD Cr,TN,TP,Pb,Cr,Cd,Zn,and so on.The results show that most of the underlying surface runoff water qualities conform to the standards.All of the concentrations of the pollutants decline to the stable level along with the continuous rain from early high values,but the COD Cr value of road surface runoff is 2 times higher than the grade V standard of surface water quality.Contrast in other seaside cities,the water-runoff pollution degree in Haikou city is lesser.更多还原