CHENG Zhi-wen,GENG Kang,CHEN Xiao-wei,et al.Effect of Stormwater Runoff Conditions on Rapid Clogging of Ceramic Permeable Brick[J].China Water & Wastewater,2021,37(5 5):116.
Effect of Stormwater Runoff Conditions on Rapid Clogging of Ceramic Permeable Brick
China Water & Wastewater[ISSN:1000-4062/CN:12-1073/TU]
volume:
第37卷
Number:
5 5
Page:
116
Column:
Date of publication:
2021-03-01
- Keywords:
- ceramic permeable brick; clogging; stormwater runoff
- Abstract:
- Effects of sediment concentration, sediment diameter and runoff velocity on rapid clogging of ceramic permeable brick were explored by using a self-developed experimental device for simulating the rapid clogging of ceramic permeable brick by stormwater runoff. When sediment diameter in stormwater was between 10 μm and 150 μm, the clogging process mainly included three stages:rapid clogging, local fluctuation and gradual clogging. The sediment concentration and particle size distribution in stormwater runoff were the main factors affecting the rapid clogging of ceramic permeable brick. When sediment concentration was between 200 mg/L and 1 000 mg/L, the clogging process was slowed down and the clogging was less severe with the increase of sediment concentration. However, opposite clogging characteristics were obtained with the increase of sediment diameter. Stormwater runoff velocity was the minor factor influencing the rapid clogging of ceramic permeable brick. When the runoff velocity was increased from 1.5 cm/s to 6.5 cm/s, the clogging process became slow, but the final clogging degree was not significantly influenced. Ceramic permeable brick with proper specifications should be selected and applied according to the sediment diameters in the local stormwater runoff.
Last Update:
2021-03-01