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Sustainability 2016, 8(7), 669; doi:10.3390/su8070669

Field Evaluation of the Nutrient Removal Performance of a Gross Pollutant Trap (GPT) in Australia

Stormwater Research Group, University of the Sunshine Coast, 90 Sippy Downs Drive, Sippy Downs, 4558 QLD, Australia
These authors contributed equally to this work.
Author to whom correspondence should be addressed.
Academic Editor: Marc A. Rosen
Received: 29 March 2016 / Revised: 5 July 2016 / Accepted: 8 July 2016 / Published: 14 July 2016
(This article belongs to the Section Sustainable Engineering and Science)
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Field testing of a proprietary stormwater treatment device (GPT) was undertaken over a one year period at a commercial site located in Sippy Downs, Queensland. The focus of the study was primarily on evaluating the effectiveness of the GPT device in removing pollution in the form of nutrients (Total Suspended Solids, Total Nitrogen, Total Phosphorus) from stormwater runoff. Water quality analysis was performed on water samples taken from the inflow and outflow of the GPT during 15 natural rainfall events. A new testing protocol was developed to ensure a comprehensive investigation of the stormwater treatment performance of the GPT. Pollution treatment Efficiency Ratios (ER) calculated for the GPT were found to be 49.2% for TSS, 26.6% for TN and 40.6% for TP. Although the nutrient removal rates of the GPT observed in the study were below those specified by Queensland regulations, the results are considered notable for a stormwater treatment device that was not specifically designed to remove nutrients from stormwater. View Full-Text
Keywords: stormwater pollution; gross pollutant trap; nitrogen; phosphorus; suspended solids stormwater pollution; gross pollutant trap; nitrogen; phosphorus; suspended solids

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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Nichols, P.; Lucke, T. Field Evaluation of the Nutrient Removal Performance of a Gross Pollutant Trap (GPT) in Australia. Sustainability 2016, 8, 669.

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