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Hydrologic and water quality performance of a laboratory scale bioretention unit
Xia, Jun1,2; Wang, Hongping3; Stanford, Richard L.4; Pan, Guoyan1; Yu, Shaw L.5
2018-02-01
Source PublicationFRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING
ISSN2095-2201
Volume12Issue:1Pages:9
Corresponding AuthorWang, Hongping(hongping.wang@whu.edu.cn)
AbstractA 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.
KeywordBioretention unit Sponge city Stormwater runoff Peak reduction Pollutant removal
DOI10.1007/s11783-018-1011-5
WOS KeywordSPONGE CITY ; SOIL-WATER ; SYSTEMS ; CHINA ; INFILTRATION ; RETENTION
Indexed BySCI
Language英语
WOS Research AreaEngineering ; Environmental Sciences & Ecology
WOS SubjectEngineering, Environmental ; Environmental Sciences
WOS IDWOS:000428398400009
PublisherHIGHER EDUCATION PRESS
Citation statistics
Document Type期刊论文
Identifierhttp://ir.igsnrr.ac.cn/handle/311030/57363
Collection中国科学院地理科学与资源研究所
Corresponding AuthorWang, Hongping
Affiliation1.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
Recommended Citation
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.
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