Assessing the environmental and economic efficacy of two integrated constructed wetlands at mitigating eutrophication risk from sewage effluent

Cooper, Richard, Hawkins, Elizabeth, Locke, Jake, Thomas, Terry and Tosney, Jonah (2020) Assessing the environmental and economic efficacy of two integrated constructed wetlands at mitigating eutrophication risk from sewage effluent. Water and Environment Journal. ISSN 1747-6585

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Abstract

The nutrient removal efficiency of two integrated constructed wetlands (ICWs) installed at commercial wastewater treatment plants (WWTPs) in Norfolk, UK, is assessed – the River Ingol ICW (1 year old) and the River Mun ICW (5 years old). Analysing water samples collected across the ICWs between February and September 2019, significant reductions in both effluent nutrient concentration and load were recorded. At the River Mun ICW, mean nitrate and phosphate concentrations were reduced by ~63% across the wetland, whilst nutrient loadings were reduced by ~57%. At the River Ingol ICW, mean nitrate and phosphate concentrations were reduced by ~30%, whilst nutrient loadings were reduced by ~70%. Economically, the total capital cost of both ICWs was comparable at £31-39 per person served. Overall, this study demonstrates ICWs can significantly reduce the eutrophication risk associated with WWTP discharges and can do so whilst providing a cost-effective alternative to conventional tertiary wastewater treatment.

Item Type: Article
Uncontrolled Keywords: municipal waste,nitrogen,organic carbon,phosphorus,rivers,wastewater treatment plant,environmental engineering,water science and technology,pollution,management, monitoring, policy and law ,/dk/atira/pure/subjectarea/asjc/2300/2305
Faculty \ School: Faculty of Science > School of Environmental Sciences
Related URLs:
Depositing User: LivePure Connector
Date Deposited: 12 Jun 2020 00:16
Last Modified: 03 Aug 2020 23:46
URI: https://ueaeprints.uea.ac.uk/id/eprint/75577
DOI: 10.1111/wej.12605

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