Stormwater Treatment Evaluation of a Constructed Floating Wetland after Two Years Operation in an Urban Catchment

Christopher Walker; Katharina Tondera; Terry Lucke

doi:10.3390/su9101687

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Stormwater Treatment Evaluation of a Constructed Floating Wetland after Two Years Operation in an Urban Catchment

Journal article

Open access

Peer reviewed

Stormwater Treatment Evaluation of a Constructed Floating Wetland after Two Years Operation in an Urban Catchment

Christopher Walker, Katharina Tondera and Terry Lucke

Sustainability, Vol.9(10), 1687

2017

DOI: https://doi.org/10.3390/su9101687

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Abstract

constructed floating wetlands

stormwater pollution

urban runoff

treatment area to catchment ratio

Constructed Floating Wetlands (CFW) for stormwater treatment are increasingly used to treat urban runoff. However, studies of large-scale systems and the long-term evaluation of their treatment efficiency are scarce. This article presents the final results of a two-year study of the pollutant removal performance of a CFW in a stormwater pond capturing runoff from a low-residential catchment in South-East Queensland (Australia) under subtropical conditions. Although the CFW treatment area to catchment ratio was only 0.14%, the results demonstrated a significant removal of both Total Suspended Solids (TSS) and Total Phosphorus (TP) from the stormwater inflows by the CFW. The efficiency ratios for TSS and TP were 81% and 52%, respectively. While the removal rate for total nitrogen was not significant for the CFW evaluated in this study, the ER was still 17%. However, the ERs for nitrate and nitrogen oxide were both 47%. The study results suggest that it may be possible to increase the pollution removal performance of the CFW by upsizing the system and including intermittent re-aeration zones in the surrounding stormwater pond. The results of this research study clearly demonstrate that CFW can be an effective treatment solution for the removal of pollution from urban stormwater runoff.

Details

Title: Stormwater Treatment Evaluation of a Constructed Floating Wetland after Two Years Operation in an Urban Catchment
Authors: Christopher Walker (Author) - Covey Associates Pty Ltd
Katharina Tondera (Author) - University of the Sunshine Coast - Faculty of Science, Health, Education and Engineering
Terry Lucke (Author) - University of the Sunshine Coast - Faculty of Science, Health, Education and Engineering
Publication details: Sustainability, Vol.9(10), 1687; 10
Publisher: MDPI AG
Date published: 2017
DOI: 10.3390/su9101687
ISSN: 2071-1050
Copyright note: Copyright © 2017 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 (CC BY) license (http://creativecommons.org/licenses/by/4.0/).
Organisation Unit: Faculty of Science, Health, Education and Engineering; School of Science and Engineering - Legacy; University of the Sunshine Coast, Queensland
Language: English
Record Identifier: 99450550802621
Output Type: Journal article

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