An experimental study was undertaken by Monash University to develop and test enviss™ stormwater treatment and harvesting technologies – non-vegetated filtration systems with an extremely low footprint. This paper focuses on the water quality and hydraulic performance of two systems tested over a ‘year’ of operation in a Melbourne climate: (1) REUSE enviss™ filters, designed for stormwater harvesting systems for non-potable supply substitution, and (2) WSUD enviss™ filters, developed to treat urban stormwater prior to discharge to downstream systems. The presence of chlorine as a disinfection agent proved to be very efficient for the removal of microorganisms in REUSE enviss™ filters. WSUD enviss™ filters had the benefit of providing an elevated nutrient treatment performance, due to an extended depth of filter media. However, nutrient outflow concentrations (total nitrogen (TN) in particular) were found to increase during the testing period. Also, extended dry weather periods were found to have a detrimental effect on the treatment performance of almost all pollutants for both filters (nutrients, Escherichia coli and heavy metals). Although hydraulic conductivity results indicated two or three sediment trap replacements per year are required to maintain filtration rates, it is expected that the compressed loading rate schedule overestimated this maintenance frequency.
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Research Article|
August 01 2012
Performance of enviss™ stormwater filters: results of a laboratory trial
K. Bratières;
1Centre for Water Sensitive Cities and Department of Civil Engineering, Monash University, Clayton, VIC 3800, Australia
E-mail: katia.bratieres@gmail.com
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C. Schang;
C. Schang
1Centre for Water Sensitive Cities and Department of Civil Engineering, Monash University, Clayton, VIC 3800, Australia
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A. Deletić;
A. Deletić
1Centre for Water Sensitive Cities and Department of Civil Engineering, Monash University, Clayton, VIC 3800, Australia
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D. T. McCarthy
D. T. McCarthy
1Centre for Water Sensitive Cities and Department of Civil Engineering, Monash University, Clayton, VIC 3800, Australia
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Water Sci Technol (2012) 66 (4): 719–727.
Article history
Received:
November 16 2011
Accepted:
March 19 2012
Citation
K. Bratières, C. Schang, A. Deletić, D. T. McCarthy; Performance of enviss™ stormwater filters: results of a laboratory trial. Water Sci Technol 1 August 2012; 66 (4): 719–727. doi: https://doi.org/10.2166/wst.2012.228
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Citation
K. Bratières, C. Schang, A. Deletić, D. T. McCarthy; Performance of enviss™ stormwater filters: results of a laboratory trial. Water Sci Technol 1 August 2012; 66 (4): 719–727. doi: https://doi.org/10.2166/wst.2012.228
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CiteScore 2.9 • Q2