Assessing Hydrological Effects of Bioretention Cells for Urban Stormwater Runoff in Response to Climatic Changes

Wang, Mo; Zhang, Dongqing; Lou, Siwei; Hou, Qinghe; Liu, Yijie; Cheng, Yin-Hui; Qi, Jian; Tan, Soon Keat

doi:10.3390/w11050997

Cited by 28 publications

(12 citation statements)

References 55 publications

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“…The runoff control rate greatly reduced because the temporary water depth rise rate on the surface of the bioretention system increases with the increase of the rainfall intensity, resulting in a rapid shortening of the overflow start time and a large increase in the overflow, lead to increase in the proportion of overflow in the total amount of runoff, and the runoff control rate is reduced. The runoff reduction rate increased slightly with the increase of rainfall intensity, which is consistent with the previous studies [29,30]. However, the reduction of runoff in the whole bioretention system was limited, and the runoff reduction rate of the three systems A1, A2, and A3 varied between 17.8% and 30.9%.…”

Section: Water Quality Analysissupporting

confidence: 90%

Hydrologic and Pollutant Removal Performance of Media Layers in Bioretention

Yang

Liu

et al. 2020

Water

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The current study was aimed to investigate the filler layer structure in modified bioretention systems. Three different structural layers in bioretention were proposed to evaluate their hydrologic performance and pollutant removal efficiency under different rainfall intensities. These layers were as follows: all three layers (filter, transition, and drainage layers), without transition layer, and without drainage layer. Synthetic stormwater was used for experimental purpose in current work. Results revealed that compared with “all three layers”, runoff control rate of “without transition layer” and “without drainage layer” was reduced by 0 to 7.4%, 0 to 10.1%, and outflow start time was advanced by 6 to 8 min and 1.5 to 4.5 min, respectively. Moreover, CODcr (chemical oxygen demand), NH4+-N (ammonium nitrogen), TN (total nitrogen) and TP (total phosphorus) removal rates were 86.0%, 85.4%, 71.8%, and 68.0%, respectively. Particle size distribution of the fillers revealed that during operation, particle moved downward were mainly within 0.16–0.63 mm size. Findings showed that transition and drainage layer played an important role in runoff control, and total height of the filler layer should not be less than 800 mm. Filter layer effectively reduce runoff pollution but the thickness of the filter layer should not be less than 500 mm. Whereas, transition layer has the function of preventing the filler loss of the filter layer; therefore, proper measures must be taken into consideration during structural optimization.

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Section: Water Quality Analysissupporting

confidence: 90%

Hydrologic and Pollutant Removal Performance of Media Layers in Bioretention

Yang

Liu

et al. 2020

Water

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“…It means the rain garden could not process the rainfall with long duration. Similarly, other researches [27,50] found a similar result. Wang et al [27] found that there is an obvious decrease in effectiveness under longer return period (e.g., 100 years) events compared to the simulated runoff reduction for 1 year, 1 h storms.…”

Section: Performance Of Rain Gardensupporting

confidence: 80%

“…Similarly, other researches [27,50] found a similar result. Wang et al [27] found that there is an obvious decrease in effectiveness under longer return period (e.g., 100 years) events compared to the simulated runoff reduction for 1 year, 1 h storms. The research of Wang et al [50] also shows that when the intensity of climate increased, LIDs were not very helpful.…”

Section: Performance Of Rain Gardensupporting

confidence: 80%

Choosing the LID for Urban Storm Management in the South of Taiyuan Basin by Comparing the Storm Water Reduction Efficiency

Cui

Long

Wang

2019

Water

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Low impact development (LID) is a storm management philosophy. This paper aims at choosing the LID for urban storm management by comparing the efficiency in the south urban district in the Taiyuan Basin. Firstly, we set up a 1D–2D model to simulate the hydrological and hydraulic process of the area. Then the efficiency of different LID scenarios was analyzed by ratio of surcharging pipeline, percentage of ponding road, external outflow, infiltration, surface runoff, facility storage, and LID area ratio. It was found that the continuous porous pavement and rain garden are beneficial for use in residential and commercial settings in urban areas, and the rain garden performs more effectively and efficiently than the continuous porous pavement. The area occupied by LID might be under 20% of the impervious building area, because the LID performance was not improved significantly with the LID area when the ratio exceeded 20%. The LIDs could be more useful for small return periods and short duration storms, and could not replace conventional runoff management practices and drainage systems.

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“…Several studies recognize the sensitivity of LID modeling to LID scale and distribution (Wolfand et al 2018; Wang et al 2019), to rainfall event size and duration (Qin et al 2013; Fry and Maxwell 2017; Mao et al 2017), and to physical LID parameters such as hydraulic conductivity or soil thickness (Gülbaz and Kazezyılmaz‐Alhan 2017; Gao et al 2018). However, model sensitivity to other siting and routing parameters such as outflow routed from LID, LID placement with adjusted imperviousness, and the percent of impervious area runoff treated by LID is not well studied.…”

Section: Introductionmentioning

confidence: 99%

SWMM Sensitivity to LID Siting and Routing Parameters: Implications for Stormwater Regulatory Compliance

Panos

Wolfand

Hogue

2020

J American Water Resour Assoc

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Misrepresentation of sensitive siting and routing parameters for low impact development (LID) affects hydrologic model outputs, stormwater infrastructure design, and regulatory compliance. ABSTRACT: Cities are experiencing new growth through infill development, or "redevelopment," where lower density land uses are redeveloped to high density with increased impervious surfaces. Cities need revised stormwater criteria to manage increases in stormwater runoff and flooding from redevelopment via low impact development (LID). Watershed-scale hydrologic modeling in the Storm Water Management Model (SWMM) can help policy makers revise regulations to adapt to redevelopment. However, LID modeling is still relatively new and the understanding of model sensitivity to certain parameters is lacking. In particular, LID siting and routing parameters such as outflow routing from, area treated by, and placement of LID are not well studied. Using a case study of a redeveloping neighborhood in Denver, Colorado, we tested 32 configurations of these parameters in a calibrated, SWMM for PC (PCSWMM) model. We found some configurations lead to counteracting model processes that result in similar runoff reduction across a variety of configurations, suggesting to policy makers that reduction targets may be met in a myriad of ways. The relative sensitivity of runoff volume to area treated and LID placement was found to be on average 3.0 and 11.2 times higher than other model parameters. Given this sensitivity, practitioners and modelers should consider LID siting and routing parameters in hydrologic modeling efforts that inform regulations.

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Assessing Hydrological Effects of Bioretention Cells for Urban Stormwater Runoff in Response to Climatic Changes

Cited by 28 publications

References 55 publications

Hydrologic and Pollutant Removal Performance of Media Layers in Bioretention

Hydrologic and Pollutant Removal Performance of Media Layers in Bioretention

Choosing the LID for Urban Storm Management in the South of Taiyuan Basin by Comparing the Storm Water Reduction Efficiency

SWMM Sensitivity to LID Siting and Routing Parameters: Implications for Stormwater Regulatory Compliance

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