引用本文:成智文,耿康,陈晓薇,等.雨水径流颗粒物对陶瓷透水砖堵塞的影响[J].水资源保护,2020,36(6):7-11DOI:10.3880/j.issn.1004-6933.2020.06.002
CHENG Zhiwen,GENG Kang,CHEN Xiaowei,et al.Impacts of rainwater runoff particles on clogging of ceramic permeable brick[J].Water Resources Protection,2020,36(6):7-11.
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雨水径流颗粒物对陶瓷透水砖堵塞的影响
成智文1, 耿康2,3, 陈晓薇2,3, 孙昕2,3, 刘婷1
1.咸阳陶瓷研究设计院有限公司, 陕西 咸阳 712000;2.西安建筑科技大学陕西省环境工程重点实验室, 陕西 西安 710055;3.西安建筑科技大学西北水资源与环境生态教育部重点实验室, 陕西 西安 710055
摘要:通过雨水径流水质的实地检测,分析了雨水径流中颗粒物粒径分布规律;采用室内试验模拟了雨水径流引起的陶瓷透水砖堵塞过程,系统研究了雨水径流中颗粒物对陶瓷透水砖堵塞的影响。结果表明:雨水径流中的颗粒物绝大部分平均粒径小于50 μm;陶瓷透水砖堵塞机制主要是粒径 20~<50 μm的颗粒物引起的表面堵塞,砖表面截留的颗粒物质量约占总截留颗粒物质量的75%;陶瓷透水砖表面截留颗粒物的粒径范围与砖表面孔径范围并不一致,主要是因为陶瓷透水砖截留的颗粒物在其表面形成的“类滤膜”的筛滤截留作用。建议合理减小陶瓷透水砖小于50 μm范围的孔径占比,以提高人工清扫恢复陶瓷透水砖透水性能的效率。
关键词:  陶瓷透水砖  雨水径流  污染物颗粒  粒径  堵塞
DOI:10.3880/j.issn.1004-6933.2020.06.002
基金项目:“十三五”国家重点研发计划(2016YFC0701001-02)
Impacts of rainwater runoff particles on clogging of ceramic permeable brick
CHENG Zhiwen1, GENG Kang2,3, CHEN Xiaowei2,3, SUN Xin2,3, LIU Ting1
1.Xianyang Research & Design Institute of Ceramics, Xianyang 712000, China;2.Shaanxi Key Laboratory of Environmental Engineering, Xian University of Architecture and Technology, Xian 710055, China;3.Key Laboratory of Northwest Water Resource, Environment and Ecology, MOE, Xian University of Architecture and Technology, Xian 710055, China
Abstract:The size distribution laws of particles in rainwater runoff were analyzed through field measurement of rainwater runoff quality. The impacts of rainwater runoff particles on the clogging of ceramic permeable brick were systematically investigated employing laboratory tests where the process of the clogging of permeable brick resulted from rainwater runoff was simulated. The results show that the average sizes of most particles in the rainwater runoff are less than 50 μm. The surface clogging caused by particles with sizes of 20~<50 μm is the main clogging mechanism of ceramic permeable bricks, and the mass of particles intercepted on the surface contributes 75% to the total mass of particles intercepted in the bricks. The size range of intercepted particles on the brick surface isnt consistent with the pore size range of the superficial brick, which is mainly caused by the filtration interception of formed filter membrane on the permeable brick surface by intercepted particles. The proportion of pore size under 50 μm of a permeable brick is suggested to be reasonably reduced to improve the permeability recovery of a permeable brick by manual cleaning.
Key words:  ceramic permeable brick  rainwater runoff  pollutant particle  particle size  clogging

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