摘要
为研究海绵道路对降雨径流过程的非点源污染负荷削减效果,以武汉市青山区某工业道路为研究对象,设计3组低影响开发(LID)措施方案:下凹式绿地(方案Ⅰ)、下凹式绿地与透水砖组合(方案Ⅱ)、下凹式绿地与透水砖和透水路面组合(方案Ⅲ)。通过暴雨洪水管理模型对研究区的非点源污染负荷进行模拟研究,分析不同暴雨重现期下研究区降雨径流中污染因子悬浮物(SS)、化学需氧量(COD)、总氮量(TN)和总磷量(TP)的负荷迁移过程及削减效果。结果表明:3组方案在不同降雨事件中对4种污染负荷均有一定削减作用,SS、COD、TP、TN负荷削减率分别提高了21.28%~50.70%、15.31%~49.57%、11.61%~51.23%、13.13%~44.75%。LID方案在小降雨事件中对负荷削减率提升幅度最大,且方案Ⅱ和方案Ⅲ对污染负荷的削减效果明显优于方案Ⅰ,但方案Ⅱ和方案Ⅲ对污染负荷控制效果接近,说明透水路面对污染负荷的控制效果较差。
To study the effect of sponge road in reducing non-point source of pollution load in rainfall runoff,an industrial road in Qingshan district,Wuhan city was taken as the research object. Three groups of low impact development(LID)measures were designed:sunken greenbelt(Scheme Ⅰ),combination of sunken greenbelt and water permeable brick(Scheme Ⅱ),combination of sunken greenbelt and water permeable brick and permeable pavement(Scheme Ⅲ). The storm water management model was used to carry out a simulation study on the non-point source of pollution load in the study area,and then the load transfer process and reduction effect of pollution factors such as suspended solids(SS),chemical oxygen demand(COD),total nitrogen(TN),total phosphorus(TP)of the rainfall runoff in the study area under different rainstorm return periods were analyzed. The results show that the three schemes have reduction effects on the four pollution loads in different rainfall events,the reduction rates in total loads of SS,COD,TP and TN increase by 21.28%-50.70%,15.31%-49.57%,11.61%-51.23% and 13.13%-44.75% respectively. LID schemes have the largest increase in load reduction rate in small rainfall events,and Scheme Ⅱ and Ⅲ have similar pollution load control effect,showing significantly better pollution load reduction effects than Scheme Ⅰ. It is indicated that the permeable pavement has a poor pollution load control effect.
作者
陶文华
李元松
冉小青
占森方
陈阵
TAO Wenhua;LI Yuansong;RAN Xiaoqing;ZHAN Senfang;CHEN Zhen(School of Civil Engineering and Architecture,Wuhan Institute of Technology,Wuhan 430074,China;Wuhan Construction Group Co.,Ltd,Wuhan 430073,China)
出处
《武汉工程大学学报》
CAS
2022年第2期219-225,共7页
Journal of Wuhan Institute of Technology
基金
武汉工程大学第十二届研究生教育创新基金(CX2020125)
中国交建集团重大科技研发项目(2016-ZJKJ-11)。
关键词
海绵道路
非点源污染
低影响开发措施
暴雨洪水管理模型
污染负荷削减
sponge road
non-point source of pollution
low impact development measures
storm water management model
pollution load reduction
