Performance evaluation of representative wildfowl & wetlands trust constructed wetlands treating sewage
Dong, YW, Scholz, M and Mackenzie, S 2013, 'Performance evaluation of representative wildfowl & wetlands trust constructed wetlands treating sewage' , Water and Environment Journal, 27 (3) , pp. 317-327.
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Data collected from five Wildfowl & Wetlands Trust constructed wetland systems offering a range of styles and inflow water types between 2005 and 2009 were examined and compared to identify long-term trends in nutrient removal. Ammonia-nitrogen concentrations were reduced between 31.9 and 96.8%. In contrast, the concentrations of nitrate-nitrogen and total oxidised nitrogen in the effluent exceeded the influent in many of the systems. Reduction in ortho-phosphate-phosphorus and total phosphorous were between −10.5 and 87.6%, and between 6.9 and 92.5%, respectively. Removal efficiencies of biochemical oxygen demand were between 0.0 and 87.3%, and reductions of total suspended solids ranged from −249.3 to 57.6%. Ammonia-nitrogen reduction was effective during summer. Long-term nitrogen removal has been efficient and consistent. However, phosphorous reduction was only sufficient during the early stages of operation, and generally declined as the wetland aged.
|Uncontrolled Keywords:||ammonia-nitrogen;biochemical oxygen demand;hydraulic loading rate, nitrate-nitrogen, ortho-phosphate-phosphorus, suspended solids;wetland ageing|
|Schools:||Schools > School of Computing, Science and Engineering
Schools > School of Computing, Science and Engineering > Salford Innovation Research Centre (SIRC)
|Journal or Publication Title:||Water and Environment Journal|
|Depositing User:||Institutional Repository|
|Date Deposited:||16 May 2014 16:54|
|Last Modified:||30 Nov 2015 23:54|
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