| 天津某住宅区降雨径流颗粒粒径分布及污染物赋存形态 |
| |
| 引用本文： | 谢尚宇,邱春生,张昱,王晨晨,王少坡,孙力平,赵乐军,宋现财.天津某住宅区降雨径流颗粒粒径分布及污染物赋存形态[J].环境科学研究,2022,35(2):566-573. |
| |
| 作者姓名： | 谢尚宇 邱春生 张昱 王晨晨 王少坡 孙力平 赵乐军 宋现财 |
| |
| 作者单位： | 1.天津城建大学环境与市政工程学院，天津 300384 |
| |
| 基金项目： | 国家水体污染控制与治理科技重大专项(No.2017ZX07106001)~~； |
| |
| 摘 要： | 为考察城市不同下垫面降雨径流中颗粒粒径分布及与污染物的关系，2020年7—8月在相同降雨条件下对天津市某居民区油毡屋面、塑钢屋面、水泥瓦屋面和沥青路面的6场降雨事件进行采样，分析降雨径流污染特征及颗粒物分布. 结果表明:①沥青路面降雨径流中悬浮颗粒物（suspended solids, SS）浓度最高，与油毡屋面、塑钢屋面和水泥瓦屋面径流SS浓度在统计上有显著差异(P<0.05)；②不同下垫面降雨径流中颗粒物粒径主要分布在10~200 μm之间，4种下垫面中值粒径（D50）浓度在计量上均有显著差异(P<0.05)；③粒径在10~50 μm的颗粒物占比最大，在油毡屋面、塑钢屋面、水泥瓦屋面和沥青路面径流中占比分别为30.95%、25.53%、30.41%和50.47%，粒径大于300 μm的颗粒物体积分数占比最小；④降雨径流中颗粒物是污染物的主要载体，径流中化学需氧量（COD）和总磷（TP）主要以颗粒态形式存在，而总氮（TN）主要以溶解态形式存在. 通过对降雨径流中颗粒物粒径分布和污染物赋存形态的研究，以期为城市径流污染控制及雨水净化方法的选取提供数据支撑.
|
| 关 键 词： | 降雨径流 下垫面 颗粒物 污染物 粒径分布 |
| 收稿时间： | 2021-09-07 |
Particle Size Distribution and Pollutant Speciation Analyses of Rainfall Runoff in Urban Residential Community of Tianjin |
| |
| XIE Shangyu,QIU Chunsheng,ZHANG Yu,WANG Chenchen,WANG Shaopo,SUN Liping,ZHAO Lejun,SONG Xiancai.Particle Size Distribution and Pollutant Speciation Analyses of Rainfall Runoff in Urban Residential Community of Tianjin[J].Research of Environmental Sciences,2022,35(2):566-573. |
| |
| Authors: | XIE Shangyu QIU Chunsheng ZHANG Yu WANG Chenchen WANG Shaopo SUN Liping ZHAO Lejun SONG Xiancai |
| |
| Affiliation: | 1.School of Environmental and Municipal Engineering, Tianjin Chengjian University, Tianjin 300384, China2.Tianjin Key Laboratory of Aquatic Science and Technology, Tianjin Chengjian University, Tianjin 300384, China3.Tianjin Municipal Engineering Design and Research Institute, Tianjin 300384, China |
| |
| Abstract: | In order to investigate the particle size distribution of particulate pollutants and its relationship with pollutants on different underlying surfaces in urban rainfall runoff, six rainfall events were selected and sampled to analyze the pollution characteristics and particle distribution of rain runoff from asphalt roof, plastic steel roof, cement tile roof and bituminous pavement in a residential area of Tianjin under the same rainfall conditions from July to August in 2020. The results showed that the suspended solids (SS) concentration of rainfall runoff from bituminous pavement was the highest and statistically significantly different from the SS concentration of rainfall runoff from asphalt roof, plastic steel roof and cement tile roof. The particle size of rainfall runoff from different underlying surfaces was mainly distributed in the range of 10-200 μm, and the median particle size (D50) concentration of the four underlying surfaces was significantly different. The particles with a particle size of 10-50 μm had the largest volume fraction, accounting for 30.95%, 25.53%, 30.41% and 50.47% of runoff in asphalt roof, plastic steel roof, cement tile roof and bituminous pavement respectively. However, the volume fraction of particles with particle size of >300 μm was the smallest. Particulate matter was the main carrier of pollutants in rainfall runoff. COD and TP were mainly associated with particulate matter, while TN was mainly dissolved in the rain runoff. The study of particle size distribution and pollutant speciation in rainfall runoff provided data support for urban runoff pollution control and rainwater purification method selection. |
| |
| Keywords: | |
| 本文献已被 万方数据 等数据库收录！ |
| 点击此处可从《环境科学研究》浏览原始摘要信息 |
|
点击此处可从《环境科学研究》下载全文 |
|
