摘要
快速的城市化给城市水环境带来严重威胁。本研究通过基于InfoWorks ICM构建的研究区域排水管网模型来评价低影响开发(LID)设施的性能。经对适用于本区域的4种LID(生物滞留池、雨水花园、下凹式绿地和植草沟)参数的灵敏性分析发现,护坡高度、表面糙率系数、表面坡度和土壤导水率是灵敏性最高的4个参数。结果表明,布设相同面积时,4种LID的径流污染控制效果差异不大,其中生物滞留池和下凹式绿地的控制效果最好;按最大面积布设时,植草沟因可布设面积最大而具有最好的削减污染物能力。在此基础上,提出串联连接LID组合方案,使其径流污染负荷控制率比未串联时提升13.24%~16.89%,可以有效控制区域径流污染,为决策者确定LID布设方案提供优化思路。
Rapid urbanization brings about a serious threat to urban water environment.The performance of low-impact development(LID)facilities was studied by using the drainage network model of the aera which was constructed by InfoWorks ICM.According to the sensitivity analysis of the parameters of the 4 types of LID,including bio-retention cell,rain garden,vegetative swale and green land,which were applicable to this area,it was found that the height of slope protection,surface roughness coefficient,surface slope and soil water conductivity were the four most sensitive parameters.When arranged in the same area,it was found that there was little difference in the runoff pollution control effect among the different kinds of LID.Compared with other two types,the bio-retention cell and green land have the relatively good control effect.When arranged according to the maximum area,vegetative swale has the best ability to reduce pollutants for the area that can be arranged for it was the largest.On this basis,the series connection LID combination scheme was proposed and its runoff pollution load control rate was increased by 13.24%~16.89%compared with that without series connection.This scheme can effectively control regional runoff pollution and it also provide optimization ideas for decision makers to determine LID layout scheme.
作者
熊园
陆丽君
Xiong Yuan;Lu Lijun(College of Environmental Science and Engineering,Tongji University,Shanghai 200092,China)
出处
《广东化工》
CAS
2022年第9期146-150,170,共6页
Guangdong Chemical Industry
基金
福建省区域发展项目(2019Y3003)。
