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Removing nitrogen and phosphorus simultaneously in stormwater runoff using permeable asphalt pavement system with a zeolite-regulated reservoir
Journal of Water Reuse and Desalination ( IF 2.3 ) Pub Date : 2020-06-01 , DOI: 10.2166/wrd.2020.057
Hui Luo 1 , Lin Guan 2 , Zhaoqian Jing 1 , Zeyu Zhang 1 , Mengni Tao 1 , Yin Wang 1 , Chen Chen 1
Affiliation  

Stormwater runoff is identified as a major source of pollution in water bodies, and to limit the impact of these pollutants on groundwater quality, permeable asphalt pavement systems (PAPS) have been built worldwide. But so far, few have considered zeolite or regulated zeolite as a post-treatment in reservoirs in PAPS. This study aimed at investigating the efficiencies of modified zeolites in removing NH4+-N and TP from stormwater runoff and providing a novel insight into the research on the reuse of stormwater runoff by PAPS. The effect of PAPS with a zeolite-regulated reservoir on removing nutrient in stormwater was explored by artificial rainfall experiments and temporary storage experiments. Results showed that the removal rate of NH4+-N and TP in PAPS with a regulated-zeolite reservoir increased by 23.7% and 37.2%, respectively, during simulated rainfall events when compared to those without a regulated-zeolite reservoir. TP was mainly removed by the form of phosphorus precipitation such as Zr(H2PO4)2. Ion exchange and adsorption during the temporary storage period were considered as the main approaches for removal of NH4+-N and TP. This study can help develop an optimal strategy for the operation of PAPS in treating stormwater runoff from urban roads.



中文翻译:

使用具有沸石调节储层的渗透性沥青路面系统同时去除雨水径流中的氮和磷

雨水径流被确定为水体的主要污染源,并且为了限制这些污染物对地下水质量的影响,全世界已经建立了渗透性沥青路面系统(PAPS)。但是到目前为止,很少有人考虑将沸石或常规沸石作为PAPS储层中的一种后处理方法。这项研究旨在研究改性沸石去除雨水径流中NH 4 + -N和TP的效率,并为PAPS对雨水径流的再利用研究提供新的见解。通过人工降雨实验和临时存储实验探讨了具有沸石调节储层的PAPS对去除雨水中养分的作用。结果表明,NH 4 +的去除率与没有调节沸石储层的模拟降雨事件相比,具有调节沸石储层的PAPS中的-N和TP分别增加了23.7%和37.2%。TP主要通过磷沉淀的形式如Zr(H 2 PO 42除去。暂时存储期间的离子交换和吸附被认为是去除NH 4 + -N和TP的主要方法。这项研究可以帮助制定一种最佳的PAPS操作策略,以处理城市道路的雨水径流。

更新日期:2020-06-01
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