西昌机场路西昌学院段公路径流污染研究

Research on Pollution of Road Runoff on the Xichang College Section of Road to Xichang Airport

本文通过对西昌机场路西昌学院段在降雨期间的连续采样,分析西昌机场路公路路面径流的污染特征。结果表明初期径流污染物浓度较高,固体悬浮物(SS)和化学需氧量(COD)最高分别为74mg/L、189mg/L;初期效应明显,路面径流污染物浓度随降雨径流历时呈前高后低的变化趋势。其很大程度上可能是与自然天气、降雨时间、车流量及路面清扫程度等因素密切相关,因此本文结合相关因素探讨了有效的控制方法,并提出建议。

Based on monitoring the runoff water quality from the Xichang College section of road to airport,we analyzed characteristics of runoff on the road surface.The result showed that the the concentration of pollutants in the initial runoff were higher,and the highest concentration of suspended solids（SS） and chemical oxygen demand（COD）were 74 mg/L and 189 mg/L,respectively.The first flush effect was obviously observed.The concentrations of pollutants in road runoff was decreased with rainfall after reaching a high peak.The characterizes of runoff might be closely related to natural weather,rainfall time,traffic,road cleaning and so on.Considering these factors,this paper discussed and recommended effective methods of pullulation control of road runoff.