Quantifying the Fate of Wastewater Nitrogen Discharged to a Canadian River

This is a Preprint and has not been peer reviewed. The published version of this Preprint is available: https://doi.org/10.1139/facets-2018-0028.

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Authors

Jason J. Venkiteswaran , Sherry Schiff, Brian Ingalls

Abstract

Addition of nutrients, such as nitrogen, can degrade water quality in lakes, rivers, and estuaries. To predict the fate of nutrient inputs, an understanding of the biogeochemical cycling of nutrients is needed. We develop and employ a novel, parsimonious, process-based model of nitrogen concentrations and stable isotopes that quantifies the competing processes of volatilization, uptake, nitrification, and denitrification in nutrient-impacted rivers. Calibration of the model to nitrogen discharges from two wastewater treatment plants in the Grand River, Ontario, Canada show that ammonia volatilization was negligible relative to uptake, nitrification, and denitrification within 5 km of the discharge points.

DOI

https://doi.org/10.31223/osf.io/mq2gn

Subjects

Biogeochemistry, Earth Sciences, Environmental Indicators and Impact Assessment, Environmental Monitoring, Environmental Sciences, Life Sciences, Physical Sciences and Mathematics, Systems Biology, Water Resource Management

Keywords

Rivers, isotopes, ammonia, ammonium, nitrate

Dates

Published: 2018-06-21 15:44

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License

CC BY Attribution 4.0 International

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