CHENGZhi-wen,GENGKang,CHENXiao-wei,et al.Clogging of Permeable Ceramic Brick and Its Control Method[J].China Water & Wastewater,2022,38(7):116-121.
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Clogging of Permeable Ceramic Brick and Its Control Method

China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU] volume: 第38卷 Number: 第7期 Page: 116-121 Column: Date of publication: 2022-04-01
Author(s):
CHENG　Zhi-wen1;  GENG　Kang2; 3;  CHEN　Xiao-wei2; 3;  SUN　Xin2; 3;  LIU　Ting1;  LI　Qing1
（1. Xianyang Research & Design Institute of Ceramics Co. Ltd.， Xianyang 712000， China； 2. Shaanxi Key Laboratory of Environmental Engineering， Xi’an University of Architecture and Technology， Xi’an 710055， China； 3. Northwest China Key Laboratory of Water Resource and Environment Ecology ， Xi’an University of Architecture and Technology， Xi’an 710055， China）
Keywords:
permeable ceramic brick;  clogging;  vacuum cleaning;  high-pressure gun flushing;  surface sweeping
Abstract:
To solve the widespread clogging problems of permeable ceramic brick in application, experiments on clogging and recovery of permeable ceramic brick by three cleaning methods were carried out in a self-developed real-time simulation device for clogging of permeable brick by using tap water and simulated runoff. Under the same runoff discharge and water depth, the clogging of permeable brick was mainly attributed to the interception of particles in rainwater runoff on the surface and inside of the brick. The clogging process could be divided into three stages: rapid clogging, fluctuation and stable clogging. The clogging could be classified into surface clogging and internal clogging according to the position of particles entering into the permeable brick. The intercepted particles on the surface were more than those inside the permeable brick, and the particle size of most intercepted particles was less than 50 μm. The recovery rates of the permeability coefficient of the permeable brick by vacuum cleaning, high-pressure gun flushing and surface sweeping were 76.80%, 46.43% and 40.52%, respectively. The intercepted particles on the brick surface could be completely removed by the three methods. However, the latter two could not remove the intercepted particles inside the brick. Therefore, the vacuum cleaning was recommended to control the clogging of the permeable ceramic brick.
Last Update: 2022-04-01