Testing of Roadside Vegetation for Highway Runoff Pollutant Removal

Jr, R J Kaighn; Yu, Shaw L.

doi:10.3141/1523-14

Cited by 19 publications

(21 citation statements)

References 5 publications

(4 reference statements)

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“…Previous research also reports that swale length, slope, vegetation cover and soil type, all factor into pollution removal performance. Pollutant properties, such as the sediment particle size distributions (PSD) and concentrations, and the amount of particulate bound pollutants also directly affects the pollutant treatment efficiency of swales [1,13,14].…”

Section: Previous Researchmentioning

confidence: 99%

“…In addition, swales reduce runoff pollutants, require little maintenance, and can be easily incorporated in projects that require a cost-effective stormwater conveyance system. This can often make swales a better choice than traditional curb-and-gutter systems [1]. It has been demonstrated that grassed swales minimise stormwater runoff pollution levels [2] by reducing stormwater flow velocities, which decreases peak outlet discharges and allows filtering and sedimentation processes to occur within the swale.…”

Section: Introductionmentioning

confidence: 99%

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Pollutant Removal and Hydraulic Reduction Performance of Field Grassed Swales during Runoff Simulation Experiments

Lucke

Mohamed

Tindale

2014

Water

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Abstract:Four different field swales were tested in this study, using 24 standardised synthetic runoff simulation experiments to evaluate their performance in removing Total Suspended Solids (TSS), Total Nitrogen (TN) and Total Phosphorous (TP) from stormwater runoff. Hydraulic reduction capability of the swales was also assessed. The study demonstrated that a swale's TSS removal performance is highly dependent on the inlet TSS concentrations. Results showed that between 50% and 80% of the TSS was generally removed within the first 10 m of the swale length. The study found no reduction in TN concentrations due to treatment by the swales. However, it did demonstrate a reduction in measured TP levels of between 20% and 23% between the inlet and the outlet. The study results demonstrated that swales can be successfully used to attenuate peak stormwater flow rates, reduce runoff volumes and to improve the quality of stormwater runoff, particularly in runoff with high concentrations of TSS and TP. The results from this study will assist designers to estimate the appropriate length of swale required to achieve specific TSS and TP pollution reductions in urban stormwater runoff and to reduce downstream runoff volumes.

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Section: Previous Researchmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Pollutant Removal and Hydraulic Reduction Performance of Field Grassed Swales during Runoff Simulation Experiments

Lucke

Mohamed

Tindale

2014

Water

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“…A study by Kaighn and Yu (1996) shows that pollutant removal was impacted more by the presence of check dams rather than changes in slope. The study was done between grass swales with check dams and grass swales without check dams, but having equal length and having different slopes.…”

Section: Performance Of Grass Swale With Check Damsmentioning

confidence: 99%

“…With the presence of two check dams and the long swale, complete captured events will occur for storms less than approximately 12.7 mm total precipitation. However, for a shorter swale (30 m), complete captured events will occur from storms with less than 5 and 7 mm total precipitation (Kaighn and Yu 1996).…”

Section: Performance Of Grass Swale With Check Damsmentioning

confidence: 99%

“…Ferguson (1998) proposed some empirical design criteria such as the water velocity should be less than 0.15 m/s, swale length should be at least 60 m and residence time in the swale should be at least 9 minutes. Furthermore, Yu et al (2001) 1994, 1996Yu et al 1994;Kaighn and Yu 1996). Both pollutants were chosen since usually regulations are written in terms of sediment and phosphorus removal.…”

Section: Grass Swale Specification Design For Pollution Controlmentioning

confidence: 99%

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Field Evaluation of Hydrologic and Water Quality Benefits of Grass Swales with Check Dams for Managing Highway Runoff

Jamil¹

2008

Low Impact Development for Urban Ecosystem and Habitat Protection

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Managing highway runoff is a complex storm water management problem.This research is an input/output field study that specifically examines the hydrologic and water quality benefits of having grass swales with an additional pre-treatment area and incorporation of check dams for managing highway runoff at a Maryland highway. These swales manage the hydrology of the stormwater by increasing the lag time (2-3 hours), reducing the overall average peak (32-44%) and reducing the total runoff volume (4-46%). The overall mass pollutant loads are reduced for TSS (38-62%), nitrate (92-95%), nitrite (54-71%), lead (78-82%), copper (56-70%) and zinc (67-79%). On the other hand, TKN (-120 to 44%), TP (-5 to 40%) and chloride (-61 to -4%) show mass increase. Compared to previous study, swales with check dams do not show any significant improvement over swales without check dams. However, a check dam swale with a pretreatment area has higher reduction of the overall mass pollutants removal for all pollutants except for TSS.

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Evaluation of site-specific factors influencing heavy metal contents in the topsoil of vegetated infiltration swales

Horstmeyer

Huber

Drewes

et al. 2016

Science of The Total Environment

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Testing of Roadside Vegetation for Highway Runoff Pollutant Removal

Cited by 19 publications

References 5 publications

Pollutant Removal and Hydraulic Reduction Performance of Field Grassed Swales during Runoff Simulation Experiments

Pollutant Removal and Hydraulic Reduction Performance of Field Grassed Swales during Runoff Simulation Experiments

Field Evaluation of Hydrologic and Water Quality Benefits of Grass Swales with Check Dams for Managing Highway Runoff

Evaluation of site-specific factors influencing heavy metal contents in the topsoil of vegetated infiltration swales

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