Statistical Analysis of Field-Based Stormwater Filtration Performance for the Ecosol Litter Basket

Fereydoon Pooya Nejad and Aaron C. Zecchin
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Fereydoon Pooya Nejad: Faculty of Engineering, Computer & Mathematical Sciences, The University of Adelaide, Adelaide 5005, Australia
Aaron C. Zecchin: Faculty of Engineering, Computer & Mathematical Sciences, The University of Adelaide, Adelaide 5005, Australia

Sustainability, 2021, vol. 13, issue 11, 1-23

Abstract: Increasing specificity in water quality regulations for the discharge of stormwater to the environment has increased the requirement to more accurately characterize the performance of filtration interventions. This work presents a statistical performance analysis for the Ecosol Litter Basket , an at source filtration device, based on an extensive field study. The field evaluation of the Ecosol Litter Basket , a primary stormwater filtration device, was performed over a three-year period in an urban catchment in Queensland, Australia. A total of 29 rainfall events were recorded, of which between 13 to 16 events were evaluated as qualifying for the purposes of characterizing the removal efficiency. A variety of pollutant removal evaluation metrics, including concentration-based and total load-based metrics, were utilized in this study to characterize the efficacy of the device for removing a range of pollutants. Two approaches are proposed to facilitate the analysis: a nonlinear regression approach to more effectively deal with nonlinear patterns in the influent and effluent data; and the regression of concentrations (ROC), which is an additional concentration-based metric. A statistical analysis of the results demonstrated that the differences between influent and effluent streams for TSS are significantly different in their mean and median, and the removal efficiency of the Ecosol Litter Basket was evaluated to be 57–65% for TSS with the influent event mean concentration (EMC) up to 142 mg/L.

Keywords: Ecosol Litter Basket; stormwater filtration; regression efficiencies (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2021
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