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Nitrogen Removal Performance Of Roadside Bioretention Cells Amended With Aluminum-Based Drinking Water Treatment Residuals, Carl Betz

UVM Patrick Leahy Honors College Senior Theses

Urban stormwater runoff transports a suite of environmental pollutants that can degrade the quality of receiving waters. Bioretention cells, a type of engineered raingarden, have been shown to reduce runoff volumes and remove a variety of pollutants. The ability of conventional bioretention cells to remove nitrogen and phosphorus, however, is variable and bioretention soil media can act as a net exporter of nutrients. This is concerning as excess loading of nitrogen and phosphorus can lead to eutrophication of surface waters. Drinking water treatment residuals (DWTR), metal (hydr)oxide rich byproducts of the drinking water treatment process, have been studied as an …