WANGZe-xi,WANGJian-long,LüZong-lin,et al.Characteristics and Influencing Factors of Particulate Matter Flush in Stable Clogging Stage of Permeable Brick Pavement[J].China Water & Wastewater,2023,39(21):123-130.
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Characteristics and Influencing Factors of Particulate Matter Flush in Stable Clogging Stage of Permeable Brick Pavement

China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU] volume: 第39卷 Number: 第21期 Page: 123-130 Column: Date of publication: 2023-11-01
Author(s):
WANG　Ze-xi1; 2;  WANG　Jian-long1; 3;  Lü　Zong-lin4;  WANG Xue-ting1;  SUN　Zheng1;  JIA Gao-feng5
（1. Key Laboratory of Urban Stormwater System and Water Environment ， Beijing University of Civil Engineering and Architecture， Beijing 100044， China； 2. China Airport Planning & Design Institute Co. Ltd.， Beijing 100029， China； 3. Beijing Engineering Research Center of Sustainable Urban Sewage System Construction and Risk Control， Beijing University of Civil Engineering and Architecture， Beijing 100044， China； 4. Guangzhou Urban Drainage Co. Ltd.， Guangzhou 510000， China； 5. Beijing Drainage Group Co. Ltd.， Beijing 100034， China）
Keywords:
permeable brick pavement;  particulate matter;  clogging;  permeability coefficient;  peak flush
Abstract:
This paper investigated the change of permeability coefficient during the clogging process of permeable brick pavement (PBP), and the flush characteristics of particulate matter in runoff under different rainfall return periods, initial loads of particulate matter and particle size distribution in the stable clogging stage by artificial rainfall experiment, so as to alleviate the problems of PBP clogging and runoff pollution. With the increase of particulate matter cumulative load, the permeability coefficient of PBP gradually decreased and tended to be stable. The whole process could be divided into linear decay period and exponential decay period. Rainfall return period, initial load of particulate matter and particle size had important effects on the flush characteristics of particulate matter on the PBP. With the increase of rainfall return period and initial load of particulate matter and the decrease of particle size, the gradual increase of the total accumulation of particulate matters in runoff was observed. Under different experimental conditions, the profile of suspended solids (SS) concentration in runoff during the flush process could be divided into initial rapid reduction stage, pre-peak increase stage and post-peak exponential decay stage, and the initial flush phenomenon was not obvious. To control 70%-80% of the total accumulated particulate matter in runoff needed to control 40%-60% of the runoff volume, and there was an obvious “peak flush” phenomenon.
Last Update: 2023-11-01