基于SWMM模型的下凹式绿地污染物削减效应分析  

Analysis on Reduction Effect of Different Pollutants by Sunken Green Space Based on SWMM

作　　者：袁溪[1] 李敏[1] 

机构地区：[1]北京林业大学环境科学与工程学院,水体污染源控制技术北京市重点实验室,北京100083

出　　处：《环境科学与技术》2016年第3期49-55,共7页Environmental Science & Technology

基　　金：“十二五”水专项:城市地表径流减控与面源污染削减技术研究(2013ZX07304-001)

摘　　要：该文基于SWMM模型研究了下凹式绿地对降雨径流中污染物的削减效果,并与实验结果进行了对比。结果表明,绿地能有效削减径流中的关键性污染物(COD、SS、TN、TP),下凹式绿地对污染物的削减率分别为SS 72.73%、COD 61.07%、TN 66.10%、TP 83.40%,削减效果总体较好。该文还对下凹式绿地的关键模型参数进行了率定,将污染物削减率的模型计算结果与实验结果对比发现,除SS误差(25.5%)较大外,TP、TN、COD削减率的误差均在5%以下,结果表明通过参数率定后的模型能较好的模拟实际情况。This study focused on pollutants reduction effect of sunken green space and had a comparison on experimental results based on SWMM. The results showed green space could reduce main pollutants such as COD,SS,TN,TP in runoff effectively. Pollutants reduction in sunken green space were 72.23% for SS,61.07% for COD,66.10% for TN and 83.40% for TP,which indicated that the sunken green space had good reduction results on the whole. This study also calibrated the important model parameters. The comparison on simulated and experimental results showed the errors of TP,TN,COD less than 5% except the error of SS was 25.5%. And results indicated SWMM model could simulate actual pollutants reduction by integrating its parameters from the literature and field experiments.

关 键 词：SWMM模型 污染物削减率 下凹式绿地 模型参数 

分 类 号：X703.1[环境科学与工程—环境工程]