Effect of rainfall characteristics on the sewer sediment, hydrograph, and pollutant discharge of combined sewer overflow
Research output: Contribution to journal › Journal article › Research › peer-review
Standard
Effect of rainfall characteristics on the sewer sediment, hydrograph, and pollutant discharge of combined sewer overflow. / Yu, Dawei; Dian, Liu; Hai, Yonglong; Randall, Mark T.; Liu, Li; Liu, Jibao; Zhang, Junya; Zheng, Xiang; Wei, Yuansong.
In: Journal of Environmental Management, Vol. 303, 114268, 2022.Research output: Contribution to journal › Journal article › Research › peer-review
Harvard
APA
Vancouver
Author
Bibtex
}
RIS
TY - JOUR
T1 - Effect of rainfall characteristics on the sewer sediment, hydrograph, and pollutant discharge of combined sewer overflow
AU - Yu, Dawei
AU - Dian, Liu
AU - Hai, Yonglong
AU - Randall, Mark T.
AU - Liu, Li
AU - Liu, Jibao
AU - Zhang, Junya
AU - Zheng, Xiang
AU - Wei, Yuansong
N1 - Funding Information: The work was funded by Major Science and Technology Program for Water Pollution Control and Treatment of China (2017ZX0710202-001), China Europe Water Platform (CEWP) Lot 3 Water and Urbanization (PI/2017/382?116). All the authors would like to acknowledge Professor Peter Engelund Holm from University of Copenhagen, for pre-peer reviewed the manuscript. Funding Information: The work was funded by Major Science and Technology Program for Water Pollution Control and Treatment of China ( 2017ZX0710202-001 ), China Europe Water Platform (CEWP) Lot 3 Water and Urbanization ( PI/2017/382–116 ). All the authors would like to acknowledge Professor Peter Engelund Holm from University of Copenhagen, for pre-peer reviewed the manuscript. Publisher Copyright: © 2021 Elsevier Ltd
PY - 2022
Y1 - 2022
N2 - Significant management needs raised in urban sewer system to facilitate urban resilience to rainstorm. The work investigated the effects of temporal evolution of rainfall on hydrograph and pollutant discharge of CSO over an intensive observation period of 12 months, with special attention to differences in temporal scale for supporting management decision making. The characteristics of rainfall in different temporal scales helped overflow-risk identification and assessment. Prolonged dry seasons over 112 days in the CSO monitored year 2018 increased the sediment buildup in the pipes. The built sediment was mostly flushed out to overflow (and the treatment facility) by initial rainfall during 47 h. Following CSO hydraulics and pollutant discharge follows initial peak patterns which responded to rainfall patterns. Results of Redundancy analysis and network analysis showed that the combined effects of rainfall, urbanization, and sediments as “CSO troika” are the driving forces for CSO pollutants in the long-term. The improved characterization of CSO events and the associated pollutants has refined our understanding of how overflow hydrograph and pollutant discharge responds to rainfall temporally, which methodology supported decision making in the combining source/process control with terminal management for facilizing urban resilience.
AB - Significant management needs raised in urban sewer system to facilitate urban resilience to rainstorm. The work investigated the effects of temporal evolution of rainfall on hydrograph and pollutant discharge of CSO over an intensive observation period of 12 months, with special attention to differences in temporal scale for supporting management decision making. The characteristics of rainfall in different temporal scales helped overflow-risk identification and assessment. Prolonged dry seasons over 112 days in the CSO monitored year 2018 increased the sediment buildup in the pipes. The built sediment was mostly flushed out to overflow (and the treatment facility) by initial rainfall during 47 h. Following CSO hydraulics and pollutant discharge follows initial peak patterns which responded to rainfall patterns. Results of Redundancy analysis and network analysis showed that the combined effects of rainfall, urbanization, and sediments as “CSO troika” are the driving forces for CSO pollutants in the long-term. The improved characterization of CSO events and the associated pollutants has refined our understanding of how overflow hydrograph and pollutant discharge responds to rainfall temporally, which methodology supported decision making in the combining source/process control with terminal management for facilizing urban resilience.
KW - Combined sewer overflow
KW - Hydrograph
KW - Pollutant discharge
KW - Rainfall
KW - Sewer sediment
U2 - 10.1016/j.jenvman.2021.114268
DO - 10.1016/j.jenvman.2021.114268
M3 - Journal article
C2 - 34894491
AN - SCOPUS:85120888607
VL - 303
JO - Journal of Environmental Management
JF - Journal of Environmental Management
SN - 0301-4797
M1 - 114268
ER -
ID: 307369888