牟子婕,李俊奇

• 1:北京建筑大学城市雨水系统与水环境教育重点实验室
• 2:北京节能减排与城乡可持续发展省部共建协同创新中心

摘要(Abstract)：

城市道路等下垫面积累大量污染物被雨水径流冲刷汇入受纳水体，造成污染威胁。透水铺装是削减径流污染的有效措施之一。为研究铺装隔离层土工布强化透水铺装对径流污染阻控的作用，明确铺装中土工布的选用，实现透水铺装性能的优化，采用模拟均匀降雨方式，在透水铺装中加铺不同材质、规格、层数的土工布研究其对出水悬浮物(SS)浓度、粒径以及总磷(TP)浓度的影响。结果表明：对于悬浮物(SS),聚酯长丝土工布去除效果较好；在双层200 g/m~2土工布的基础上每加铺同等规格100 g/m~2的土工布，出水90 min时去除率提高2.4%～3.3%,加铺双层600 g/m~2土工布的铺装去除率可达89.71%;加铺土工布后可以有效去除0～76μm粒径的SS。对于总磷(TP),聚酯长丝和聚丙烯短纤土工布去除效果好；加铺双层600 g/m~2土工布的铺装对TP去除效果最好，出水120min时去除率为86.24%。因此，在铺装内加铺双层聚丙烯短纤或聚酯长丝材质土工布并适当增大规格，既能缓解铺装堵塞，又能强化铺装径流污染阻控，加铺土工布对透水混凝土铺装污染物去除率影响较大，在装置中可稳定发挥作用。

关键词(KeyWords)： 透水铺装;土工布;雨水径流;悬浮物;总磷

Abstract:

Keywords:

基金项目(Foundation): 北京市自然科学基金重点项目(8191001)

作者(Author): 牟子婕,李俊奇

DOI: 10.13928/j.cnki.wrahe.2022.06.017

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