Nitrogen Removal in Integrated Constructed Wetland Treating Domestic Wastewater Mawuli Dzakpasu 1 , Oliver Hofmann 2 , Miklas Scholz 2 , Rory Harrington 3 , Siobhán Jordan 1 , Valerie McCarthy 1 1 Centre for Freshwater Studies, Dundalk Institute of Technology, Dundalk, Co. Louth, Ireland. 2 Institute for Infrastructure and Environment, School of Engineering, The University of Edinburgh, Edinburgh EH9 3JL. 3 Water Services and Policy Division, Department of Environment, Heritage and Local Government, Waterford, Ireland. 2nd Irish International Conference on Constructed Wetlands for Wastewater Treatment and Environmental Pollution Control 1st – 2nd October 2010
29
Embed
Nitrogen Removal in Integrated Constructed Wetland Treating Domestic Wastewater
Presentation at 2nd Irish International Conference on Constructed Wetlands for Wastewater Treatment & Environmental Pollution Control. 1-2 Oct. 2010
Welcome message from author
This document is posted to help you gain knowledge. Please leave a comment to let me know what you think about it! Share it to your friends and learn new things together.
1 Centre for Freshwater Studies, Dundalk Institute of Technology, Dundalk, Co. Louth, Ireland. 2 Institute for Infrastructure and Environment, School of Engineering, The University of Edinburgh, Edinburgh EH9 3JL. 3 Water Services and Policy Division, Department of Environment, Heritage and Local Government, Waterford, Ireland.
2nd Irish International Conference on Constructed Wetlands for
Wastewater Treatment and Environmental Pollution Control
1st – 2nd October 2010
Presentation outline
• Introduction
o Background
o Aim and objectives
• Case study description
• Materials and methods
• Results
• Conclusions
• Acknowledgements
Background
• Constructed wetlands used to remove wide
range of pollutants
• High removal efficiency (70% up) recorded
for several pollutants e.g. COD, BOD5, TSS
• Nitrogen removal efficiencies usually low and
variable
Background
Integrated Constructed Wetlands (ICW) are:
• Multi-celled with sequential through-flow
• Free water surface flow wetlands
• Predominantly shallow densely
emergent vegetated
Background
ICW
concept Biodiversity enhancement
ICW conceptual framework
Landscape fit
Water treatment
Background
• Application of ICW as main unit for large-scale
domestic wastewater treatment is novel
• Limited information to quantify nitrogen removal
processes in full scale industry-sized ICW
Background
Nitrogen biogeochemical cycle in wetlands
Research aim and objectives
Aim
• To evaluate the nitrogen (N) removal performance of a full scale ICW
Objectives
• To compare annual and seasonal N removal efficiencies of the ICW
• To estimate the areal N removal rates and determine areal first-order kinetic coefficients for N removal in the ICW
• To assess the influence of water temperature on N removal performance of the ICW