Hydraulic tracer studies in a pilot scale subsurface flow constructed wetland

King, AC, Mitchell, CA and Howes, T (1997) Hydraulic tracer studies in a pilot scale subsurface flow constructed wetland. Water Science And Technology, 35 5: 189-196. doi:10.1016/S0273-1223(97)00068-1

Author King, AC
Mitchell, CA
Howes, T
Title Hydraulic tracer studies in a pilot scale subsurface flow constructed wetland
Journal name Water Science And Technology   Check publisher's open access policy
ISSN 0273-1223
Publication date 1997-01-01
Year available 1997
Sub-type Article (original research)
DOI 10.1016/S0273-1223(97)00068-1
Open Access Status Not yet assessed
Volume 35
Issue 5
Start page 189
End page 196
Total pages 8
Language eng
Abstract Current design procedures for Subsurface Flow (SSF) Wetlands are based on the simplifying assumptions of plug flow and first order decay of pollutants. These design procedures do yield functional wetlands but result in over-design and inadequate descriptions of the pollutant removal mechanisms which occur within them. Even though these deficiencies are often noted, few authors have attempted to improve modelling of either flow or pollutant removal in such systems. Consequently the Oxley Creek Wetland, a pilot scale SSF wetland designed to enable rigorous monitoring, has recently been constructed in Brisbane, Australia. Tracer studies have been carried out in order to determine the hydraulics of this wetland prior to commissioning it with sealed sewage. The tracer studies will continue during the wetland's commissioning and operational phases. These studies will improve our understanding of the hydraulics of newly built SSF wetlands and the changes brought on by operational factors such as biological films and wetland plant root structures. Results to date indicate that the flow through the gravel beds is not uniform and cannot be adequately modelled by a single parameter, plug flow with dispersion, model. We have developed a multiparameter model, incorporating four plug flow reactors, which provides a better approximation of our experimental data. With further development this model will allow improvements to current SSF wetland design procedures and operational strategies, and will underpin investigations into the pollutant removal mechanisms at the Oxley Creek Wetland. (C) 1997 IAWQ. Published by Elsevier Science Ltd.
Keyword Engineering, Environmental
Environmental Sciences
Water Resources
Artificial Wetlands
Constructed Wetlands
Gravel Beds
Pilot Scale
Submerged Flow Wetlands
Subsurface Flow Wetlands
Tracer Studies
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status Unknown

Document type: Journal Article
Sub-type: Article (original research)
Collection: School of Chemical Engineering Publications
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Citation counts: TR Web of Science Citation Count  Cited 41 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 51 times in Scopus Article | Citations
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Created: Tue, 14 Aug 2007, 02:49:14 EST