Constructed Rapid Infiltration Systems for Urban Runoff Control: Influences of Medium Contents, Medium Depth and Hydraulic Load Cycle

Q. Feng, Y. Q. Sun, X. Y. Zhao, W. Huang, Z. X. Xue, J. Y. Luo

Abstract

The constructed rapid infiltration system (CRIS) has been widely used in urban stormwater management. However, limited knowledge has been acquired for the selection and optimization of mediums in CRIS. In this paper, the performance of CRIS was improved by different contents of natural soil, natural sand and zeolite. Permeability coefficient (K), uniformity coefficient (K80) and pollutants removal efficiencies were used to evaluate the influences of medium contents on the operation of CRIS in static test. Using the best medium contents, the effects of medium depth and hydraulic load cycle on CRIS performance were further investigated. The result shows that the best and cost-effective permeability coefficient (0.166 cm/min) and high pollutant removal efficiency (> 70%) were obtained when the ratio of sand : soil : zeolite was 47.5% : 47.5% : 5%. The pollutant removal efficiency in the surface layer (0 - 30 cm) was significantly higher than that in bottom (50 - 80 cm). Higher pollutants removal were gotten at hydraulic load cycle of submergencing for 2 hours and drying for 10 hours. The main factor affecting the removal of COD and ammonia nitrogen was the change of aerobic environment in CRIS which mainly relied on biofilms to degrade and adsorb pollutants.

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Paper Citation


in Harvard Style

Feng Q., Sun Y., Zhao X., Huang W., Xue Z. and Luo J. (2018). Constructed Rapid Infiltration Systems for Urban Runoff Control: Influences of Medium Contents, Medium Depth and Hydraulic Load Cycle.In Proceedings of the International Workshop on Environmental Management, Science and Engineering - Volume 1: IWEMSE, ISBN 978-989-758-344-5, pages 637-644. DOI: 10.5220/0007564006370644


in Bibtex Style

@conference{iwemse18,
author={Q. Feng and Y. Q. Sun and X. Y. Zhao and W. Huang and Z. X. Xue and J. Y. Luo},
title={Constructed Rapid Infiltration Systems for Urban Runoff Control: Influences of Medium Contents, Medium Depth and Hydraulic Load Cycle},
booktitle={Proceedings of the International Workshop on Environmental Management, Science and Engineering - Volume 1: IWEMSE,},
year={2018},
pages={637-644},
publisher={SciTePress},
organization={INSTICC},
doi={10.5220/0007564006370644},
isbn={978-989-758-344-5},
}


in EndNote Style

TY - CONF

JO - Proceedings of the International Workshop on Environmental Management, Science and Engineering - Volume 1: IWEMSE,
TI - Constructed Rapid Infiltration Systems for Urban Runoff Control: Influences of Medium Contents, Medium Depth and Hydraulic Load Cycle
SN - 978-989-758-344-5
AU - Feng Q.
AU - Sun Y.
AU - Zhao X.
AU - Huang W.
AU - Xue Z.
AU - Luo J.
PY - 2018
SP - 637
EP - 644
DO - 10.5220/0007564006370644