Impact of Wind on Stormwater Pond Particulate Removal
Stormwater ponds provide cost and space-efficient treatment of urban runoff via gravitational settling. The goal of this paper was to quantify different mechanisms by which wind can affect the particle removal efficiency of a shallow retention pond. An analytical bulk model was developed and validat...
Published in: | Journal of Environmental Engineering |
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American Society of Civil Engineers (ASCE)
2017
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Online Access: | https://hdl.handle.net/20.500.11815/581 https://doi.org/10.1061/(ASCE)EE.1943-7870.0001221 |
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ftopinvisindi:oai:opinvisindi.is:20.500.11815/581 2023-05-15T16:51:08+02:00 Impact of Wind on Stormwater Pond Particulate Removal Andradóttir, Hrund Umhverfis- og byggingarverkfræðideild (HÍ) Faculty of Civil and Environmental Engineering (UI) Verkfræði- og náttúruvísindasvið (HÍ) School of Engineering and Natural Sciences (UI) Háskóli Íslands University of Iceland 2017-08 04017027 https://hdl.handle.net/20.500.11815/581 https://doi.org/10.1061/(ASCE)EE.1943-7870.0001221 en eng American Society of Civil Engineers (ASCE) Journal of Environmental Engineering;143(8) http://ascelibrary.org/doi/pdf/10.1061/%28ASCE%29EE.1943-7870.0001221 Andradóttir, H. Ó. (2017). Impact of Wind on Stormwater Pond Particulate Removal. Journal of Environmental Engineering, 143(8), 04017027. doi:doi:10.1061/(ASCE)EE.1943-7870.0001221 0733-9372 1943-7870 (eISSN) https://hdl.handle.net/20.500.11815/581 Journal of Environmental Engineering https://doi.org/10.1061/(ASCE)EE.1943-7870.0001221 info:eu-repo/semantics/openAccess Particle size Resuspension Settling Short-circuiting Stormwater pond Treatment efficiency Wash loads Wind mixing Tjarnir Umhverfisverkfræði Vindar info:eu-repo/semantics/article 2017 ftopinvisindi https://doi.org/20.500.11815/581 https://doi.org/10.1061/(ASCE)EE.1943-7870.0001221 2022-11-18T06:51:35Z Stormwater ponds provide cost and space-efficient treatment of urban runoff via gravitational settling. The goal of this paper was to quantify different mechanisms by which wind can affect the particle removal efficiency of a shallow retention pond. An analytical bulk model was developed and validated numerically against total suspended solids (TSS) measurements in a small (0.3 ha), optimally designed oval pond during four runoff events with 7–11 m/s winds. Simulations highlighted wind as an effective mixing mechanism, lowering the removal of medium silt particles by 10–20% from ideal plug flow, and severely constraining the removal of small clay and silt particles (<6 μm). Initial background concentrations of <12 mg/L TSS were positively correlated with wind speed 5 h prior to the event, indicative of localized wind resuspension. A widespread remobilization of bed sediments was found unlikely in a 1.7-m deep, 112-m fetch pond. A stirred reactor with 60% effective volume is proposed as a first order tool to assess the treatment performance of ideally structured ponds in areas with strong, unobstructed winds. This work was funded by the University of Iceland Research Fund. The Icelandic Meteorological Office is thanked for data and equipment for PSD assessment. Gudbjörg Esther Vollertsen is thanked for field data collection. Professor Lars Bengtsson at Lund Technical University is thanked for his comments on the manuscript. Peer Reviewed Article in Journal/Newspaper Iceland Opin vísindi (Iceland) Esther ENVELOPE(-57.700,-57.700,-61.917,-61.917) Tjarnir ENVELOPE(-18.050,-18.050,65.583,65.583) Journal of Environmental Engineering 143 8 04017027 |
institution |
Open Polar |
collection |
Opin vísindi (Iceland) |
op_collection_id |
ftopinvisindi |
language |
English |
topic |
Particle size Resuspension Settling Short-circuiting Stormwater pond Treatment efficiency Wash loads Wind mixing Tjarnir Umhverfisverkfræði Vindar |
spellingShingle |
Particle size Resuspension Settling Short-circuiting Stormwater pond Treatment efficiency Wash loads Wind mixing Tjarnir Umhverfisverkfræði Vindar Andradóttir, Hrund Impact of Wind on Stormwater Pond Particulate Removal |
topic_facet |
Particle size Resuspension Settling Short-circuiting Stormwater pond Treatment efficiency Wash loads Wind mixing Tjarnir Umhverfisverkfræði Vindar |
description |
Stormwater ponds provide cost and space-efficient treatment of urban runoff via gravitational settling. The goal of this paper was to quantify different mechanisms by which wind can affect the particle removal efficiency of a shallow retention pond. An analytical bulk model was developed and validated numerically against total suspended solids (TSS) measurements in a small (0.3 ha), optimally designed oval pond during four runoff events with 7–11 m/s winds. Simulations highlighted wind as an effective mixing mechanism, lowering the removal of medium silt particles by 10–20% from ideal plug flow, and severely constraining the removal of small clay and silt particles (<6 μm). Initial background concentrations of <12 mg/L TSS were positively correlated with wind speed 5 h prior to the event, indicative of localized wind resuspension. A widespread remobilization of bed sediments was found unlikely in a 1.7-m deep, 112-m fetch pond. A stirred reactor with 60% effective volume is proposed as a first order tool to assess the treatment performance of ideally structured ponds in areas with strong, unobstructed winds. This work was funded by the University of Iceland Research Fund. The Icelandic Meteorological Office is thanked for data and equipment for PSD assessment. Gudbjörg Esther Vollertsen is thanked for field data collection. Professor Lars Bengtsson at Lund Technical University is thanked for his comments on the manuscript. Peer Reviewed |
author2 |
Umhverfis- og byggingarverkfræðideild (HÍ) Faculty of Civil and Environmental Engineering (UI) Verkfræði- og náttúruvísindasvið (HÍ) School of Engineering and Natural Sciences (UI) Háskóli Íslands University of Iceland |
format |
Article in Journal/Newspaper |
author |
Andradóttir, Hrund |
author_facet |
Andradóttir, Hrund |
author_sort |
Andradóttir, Hrund |
title |
Impact of Wind on Stormwater Pond Particulate Removal |
title_short |
Impact of Wind on Stormwater Pond Particulate Removal |
title_full |
Impact of Wind on Stormwater Pond Particulate Removal |
title_fullStr |
Impact of Wind on Stormwater Pond Particulate Removal |
title_full_unstemmed |
Impact of Wind on Stormwater Pond Particulate Removal |
title_sort |
impact of wind on stormwater pond particulate removal |
publisher |
American Society of Civil Engineers (ASCE) |
publishDate |
2017 |
url |
https://hdl.handle.net/20.500.11815/581 https://doi.org/10.1061/(ASCE)EE.1943-7870.0001221 |
long_lat |
ENVELOPE(-57.700,-57.700,-61.917,-61.917) ENVELOPE(-18.050,-18.050,65.583,65.583) |
geographic |
Esther Tjarnir |
geographic_facet |
Esther Tjarnir |
genre |
Iceland |
genre_facet |
Iceland |
op_relation |
Journal of Environmental Engineering;143(8) http://ascelibrary.org/doi/pdf/10.1061/%28ASCE%29EE.1943-7870.0001221 Andradóttir, H. Ó. (2017). Impact of Wind on Stormwater Pond Particulate Removal. Journal of Environmental Engineering, 143(8), 04017027. doi:doi:10.1061/(ASCE)EE.1943-7870.0001221 0733-9372 1943-7870 (eISSN) https://hdl.handle.net/20.500.11815/581 Journal of Environmental Engineering https://doi.org/10.1061/(ASCE)EE.1943-7870.0001221 |
op_rights |
info:eu-repo/semantics/openAccess |
op_doi |
https://doi.org/20.500.11815/581 https://doi.org/10.1061/(ASCE)EE.1943-7870.0001221 |
container_title |
Journal of Environmental Engineering |
container_volume |
143 |
container_issue |
8 |
container_start_page |
04017027 |
_version_ |
1766041246696996864 |