雨水花园路面径流污染控制研究——以沈阳市为例

摘要

以沈阳市为例,从道路绿带与雨水花园技术相结合建设的角度,综合考虑污染物去除效果、材料易获取程度等因素,研究了填料层对TP、TN、COD、SS 4种污染物的去除试验.通过AHP分析法综合评价得出使用高炉渣与活性炭作为街道绿化雨水花园填料层材料时最为经济有效的结论,并综合分析相关研究结果,总结雨水花园的构造条件与运行条件对路面径流污染物去除率的影响,提出了针对污染物控制的沈阳市路旁雨水花园合理建设模式.%Take Shenyang City as an example,from the angle of the combination of road greenbelt and rainwater garden technology,and comprehensive consideration of pollutant removal efficiency,material availability and other factors,the removal experiment of packing layer for 4 kinds of pollutants,TP,TN,COD and SS was studied.By means of AHP analysis,it was concluded that the blast furnace slag and activated carbon were the most economical and effective filling material of the street green rainwater garden,and the relevant research results were comprehensively analyzed.The influence of structure condition and operation condition of rainwater garden on pollutant removal rate of road runoff was summarized,the reasonable construction model of roadside rainwater garden in Shenyang was put forward.