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

Terry Lucke; Mohamed Ansaf Kachchu Mohamed; Neil W Tindale

doi:10.3390/w6071887

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

Journal article

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Peer reviewed

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

Terry Lucke, Mohamed Ansaf Kachchu Mohamed and Neil W Tindale

Water, Vol.6(7), pp.1887-1904

2014

DOI: https://doi.org/10.3390/w6071887

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Abstract

swales

stormwater pollution

total suspended solids (TSS)

particle size distribution (PSD)

stormwater treatment train

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.

Details

Title: Pollutant Removal and Hydraulic Reduction Performance of Field Grassed Swales during Runoff Simulation Experiments
Authors: Terry Lucke (Author) - University of the Sunshine Coast - Faculty of Science, Health, Education and Engineering
Mohamed Ansaf Kachchu Mohamed (Author) - University of the Sunshine Coast - Faculty of Science, Health, Education and Engineering
Neil W Tindale (Author) - University of the Sunshine Coast - Faculty of Science, Health, Education and Engineering
Publication details: Water, Vol.6(7), pp.1887-1904
Publisher: MDPI AG
Date published: 2014
DOI: 10.3390/w6071887
ISSN: 2073-4441
Copyright note: Copyright © 2014 by the authors; licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/).
Organisation Unit: School of Science and Engineering - Legacy; University of the Sunshine Coast, Queensland; School of Science, Technology and Engineering
Language: English
Record Identifier: 99447770402621
Output Type: Journal article