Conference Proceedings

Advancing biofilter design for co-optimised nitrogen and phosphorus removal

B Glaister, TD Fletcher, PLM Cook, BE Hatt

Proceedings of the 7th International Water Sensitive Urban Design Conference | Published : 2012

Abstract

This study investigates the influence of several design parameters; vegetation, filter media type (loamy sand, Skye sand - a locally available iron rich sand) and saturated zone, on the nutrient removal performance of biofilters to develop a design which is "co-optimised" for nitrogen and phosphorus removal. Twenty laboratory-scale biofilter columns were constructed to compare four design configurations (five replicates of each). Over a period of twelve months the columns were dosed with semi-synthetic stormwater, with volumes reflecting both wet and dry weather periods, based on average Melbourne rainfall. Water quality samples collected at five week intervals were analysed for total nitrog..

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