Hydrologic and water quality performance of a laboratory scale bioretention unit

doi:10.1007/s11783-018-1011-5

	Hydrologic and water quality performance of a laboratory scale bioretention unit
	Xia, Jun 1,2; Wang, Hongping 3; Stanford, Richard L.4; Pan, Guoyan 1; Yu, Shaw L.5
刊名	FRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING
	2018-02-01
卷号	12 期号:1 页码:9
关键词	Bioretention unit Sponge city Stormwater runoff Peak reduction Pollutant removal
ISSN号	2095-2201
DOI	10.1007/s11783-018-1011-5
通讯作者	Wang, Hongping(hongping.wang@whu.edu.cn)
英文摘要	A bioretention unit (BRU) or cell is a green infrastructure practice that is widely used as a low impact development (LID) technique for urban stormwater management. Bioretention is considered a good fit for use in China's sponge city construction projects. However, studies on bioretention design, which incorporates site-specific environmental and social-economic conditions in China are still very much needed. In this study, an experimental BRU, consisted of two cells planted with Turf grass and Buxus sinica, was tested with eighteen synthesized storm events. Three levels (high, median, low) of flows and concentrations of pollutants (TN, TP and COD) were fed to the BRU and the performance of which was examined. The results showed that the BRU not only delayed and lowered the peak flows but also removed TN, TP and COD in various ways and to different extents. Under the high, medium and low inflow rate conditions, the outflow peaks were delayed for at least 13 minutes and lowered at least 52%. The two cells stored a maximum of 231 mm and 265 mm for turf grass and Buxus sinica, respectively. For both cells the total depth available for storage was 1,220 mm, including a maximum 110 mm deep ponding area. The largest infiltrate rate was 206 mm/ h for both cells with different plants. For the eighteen events, TP and COD were removed at least 60% and 42% by mean concentration, and 65% and 49% by total load, respectively. In the reservoir layer, the efficiency ratio of removal of TN, TP and COD were 52%, 8% and 38%, respectively, within 5 days after runoff events stopped. Furthermore, the engineering implication of the hydrological and water quality performances in sponge city construction projects is discussed. (C) Higher Education Press and Springer-Verlag GmbH Germany 2018.
WOS关键词	SPONGE CITY ; SOIL-WATER ; SYSTEMS ; CHINA ; INFILTRATION ; RETENTION
WOS研究方向	Engineering ; Environmental Sciences & Ecology
语种	英语
出版者	HIGHER EDUCATION PRESS
WOS记录号	WOS:000428398400009
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/57362]
专题	中国科学院地理科学与资源研究所
通讯作者	Wang, Hongping
作者单位	1.Wuhan Univ, State Key Lab Water Resources & Hydropower Engn S, Wuhan 430072, Hubei, Peoples R China 2.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Key Lab Water Cycle & Related Land Surface Proc, Beijing 100101, Peoples R China 3.Wuhan Univ, Sch Resources & Environm Sci, Dept Environm Engn, Wuhan 430079, Hubei, Peoples R China 4.ATR Associates Inc, Strasburg, VA 22657 USA 5.Univ Virginia, Dept Civil & Environm Engn, Charlottesville, VA 22903 USA
推荐引用方式 GB/T 7714	Xia, Jun,Wang, Hongping,Stanford, Richard L.,et al. Hydrologic and water quality performance of a laboratory scale bioretention unit[J]. FRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING,2018,12(1):9.
APA	Xia, Jun,Wang, Hongping,Stanford, Richard L.,Pan, Guoyan,&Yu, Shaw L..(2018).Hydrologic and water quality performance of a laboratory scale bioretention unit.FRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING,12(1),9.
MLA	Xia, Jun,et al."Hydrologic and water quality performance of a laboratory scale bioretention unit".FRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING 12.1(2018):9.