北京春季屋面融雪径流污染空间分布特征研究  

Spatial distribution characteristics of roof runoff pollution from snowmelt in spring in Beijing

作　　者：严玉林 张蕾 韩杰[2] 战楠 YAN Yulin;ZHANG Lei;HAN Jie;ZHAN Nan(Beijing Water Science and Technology Institute,Beijing 100048,China;Hohai University,Nanjing 210098,China)

机构地区：[1]北京市水科学技术研究院,北京100048 [2]河海大学,江苏南京210098

出　　处：《北京水务》2023年第3期29-32,57,共5页Beijing Water

摘　　要：为掌握北京春季融雪径流污染情况,基于2022年春季北京8个区14处融雪屋面径流监测数据,对融雪径流污染空间分布、污染物浓度水平及区域污染分布特征进行分析。除总氮外,住宅区屋面融雪径流污染物中,悬浮物、氨氮、总磷和高锰酸盐浓度均在北部区域较低;悬浮物和氨氮的空间分布相似,从北部至东南部,浓度呈现增加趋势;氨氮、总磷和高锰酸盐平均浓度均低于相应的地表水质量标准Ⅴ类限值;相同区域的屋面融雪径流受降雪量、屋面特征及污染物特性等因素影响,污染特征存在差异性。研究成果可为控制面源污染、地表径流污染提供数据支撑。Based on the monitoring data of runoff from 14 snowmelt roofs in 8 districts in Beijing in the spring of 2022,this study analyzed the spatial distribution of snowmelt runoff pollution,pollutant concentration level,and regional pollution distribution characteristics to understand the pollution situation of snowmelt runoff in spring of Beijing.Except for total nitrogen,the concentrations of suspended solids,ammonia nitrogen,total phosphorus and permanganate index in the roofing snowmelt runoff of residential areas were lower in the northern region.The spatial distribution of suspended matter and ammonia nitrogen was similar,with an increasing trend from the north to the southeast.The average concentrations of ammonia nitrogen,total phosphorus and permanganate index were lower than the class V standard limits of the corresponding surface water quality standard.The pollution characteristics of roofing snowmelt runoff in the same area were different,affected by factors such as snowfall,roofing characteristics and pollutant characteristics.The results could provide data support for non-point source pollution and surface runoff pollution control and measures.

关 键 词：春季融雪 屋面径流 污染物浓度 空间分布 

分 类 号：X523[环境科学与工程—环境工程]