校园不同下垫面雨水径流水质监测分析

摘要

通过对校园内不同下垫面雨水径流进行水质监测分析，数据显示初期雨水径流污染物浓度较高，随着降雨持续，其浓度下降并趋于平稳。结果表明，校园屋面雨水径流水质较校园道路好，雨水径流中pH、电导率、BODs、溶解氧、总余氯、氨氮、TP、度及嗅和味等指标均符合”城市杂用水标准”要求，而SS、TN、浊度等指标含量较高，超过该标准要求。%Water quality monitoring and analysis of rainwater runoff of the different underlying surface on campus show that the main water quality indexes of rainwater runoff have a regular change. The results reveal that pollutant of urban runoff is in higher concentration, and the concentration decreases gradually with the rainfall continues, then becomes relatively stable. And the results indicate that the rain water quality of the school roof is better than that of the road. The concentration of pH, conductivity, BOD5, dissolved oxygen, total residual chlorine, ammonia, TP, color, smell and taste meet the "Urban Reused Water Standard", while the concentration of SS, TN, turbidity levels of rainwater runoff exceed the Standard.