城市路面径流颗粒污染物研究现状分析

ANALYSIS ON RESEARCH STATUS OF PARTICULATE POLLUTANTS IN URBAN ROAD RUNOFF

城市路面径流污染已成为危害我国城市水环境质量的重要污染源,故就城市路面径流特征、区域污染特征、污染物赋存状态等对目前国内城市路面径流污染进行归纳分析。结果表明:国内城市路面径流污染严重,污染程度与土地的利用功能密切相关,各城市路面径流污染物赋存状态差异较大。对路面径流颗粒物的研究现状分析表明:粒径为0. 45～300μm的颗粒物占总颗粒污染物的绝大多数;颗粒物浓度随着降雨历时的延长而降低;颗粒物浓度与大部分污染物浓度相关性高,表明颗粒物是有机物和重金属的重要载体。

Urban road runoff pollution had become an important pollution source for the deterioration of water environment quality in China.This paper summarized and analyzed the existing road runoff pollution situation in China′s domestic cities from the pollution characteristics, the regional pollution characteristics and the status of pollutant occurrence, etc.The results showed that: the domestic urban road runoff pollution was serious, and the pollution degree was closely related to the utilization function of land, and there was a large difference in the occurrence status of pollutants in road runoff of various cities.Analysis of research status on particulate pollutants in road runoff showed that: particulates at the size of 0.45~300 μm accounted for the vast majority of the total particulate pollutants;the concentration of particulates was reduced with prolonged rainfall period;there was a high correlation between concentration of particulates and the concentration of most pollutants, which indicated that particulate was an important carrier of organic matters and heavy metal elements.