ZHANGZi-yang,QIHao,ZHANGXiao-ran,et al.Migration of Surface Runoff Pollutants in Permeable Pavement System[J].China Water & Wastewater,2022,38(9):123-132.
Click Copy

Migration of Surface Runoff Pollutants in Permeable Pavement System

China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU] volume: 第38卷 Number: 第9期 Page: 123-132 Column: Date of publication: 2022-05-01
Author(s):
ZHANG　Zi-yang1; 2;  QI　Hao3;  ZHANG　Xiao-ran1; 2;  BAI　Xiao-juan2;  TAN　Chao-hong2;  LI　Hai-yan1
（1. Key Laboratory of Urban Stormwater System and Water Environment ， Beijing University of Civil Engineering and Architecture， Beijing 100044， China； 2. Nanjing Water Purification Environment Institute Co. Ltd.， Nanjing 210044， China； 3. Engineering Research Center of Sustainable Urban Sewage System Construction and Risk Control， Beijing University of Civil Engineering and Architecture， Beijing 100044， China）
Keywords:
permeable pavement system;  runoff pollution;  low impact development;  non-point source pollution
Abstract:
According to the characteristics of rainfall runoff in Beijing, three typical permeable pavement systems, namely cement permeable brick, sand-based permeable brick and shale permeable brick, were selected to investigate the conventional runoff pollutants (COD, NH4+-N, TN and TP) removal efficiency and removal mechanism of the permeable pavement system by surface damage experiment and column experiment, and the effects of different rainfall return periods and permeable pavement beds on runoff control were investigated. After the damaged surface material was soaked by rainwater, the pollutants might dissolve out and aggravated the runoff pollution. The variable trends of runoff pollutants concentration in the effluent from the three permeable pavement systems were basically the same. With the extension of operation time, most of the pollutants concentration firstly decreased sharply and then increased in different degrees. The pollutants removal efficiencies of the cement brick and sand?based brick permeable pavement systems were similar and superior to that of the shale brick permeable pavement system. The surface layer, the lower base layer and the bottom base layer of the three permeable pavement systems had a better COD and NH4+-N removal performance. The removal performance of TN in each bed of the system was poor, and even TN release phenomenon was observed. However, the removal performance of TP was good. When the rainfall return period increased, the pollutants removal performance of the permeable pavement system became worse.
Last Update: 2022-05-01