The hydraulic efficiency of fringing versus banded vegetation in constructed wetlands

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Title The hydraulic efficiency of fringing versus banded vegetation in constructed wetlands
Author Jenkins, Graham Andrew; Greenway, Margaret
Journal Name Ecological Engineering
Year Published 2005
Place of publication Netherlands
Publisher Elsevier
Abstract This paper describes a numerical model study that has been undertaken to investigate the effects of emergent fringing and banded vegetation on the hydraulic characteristics of constructed wetlands. The model study demonstrates that poorly designed wetlands with inappropriate layout of wetland vegetation can result in a significant reduction in the hydraulic efficiency of the wetland system. An empirical relationship is developed between the vegetation characteristics, the wetland shape and the hydraulic efficiency of the system. The relationship developed allows wetland designers and managers to combine computationally simple continuously stirred tank reactor models of the wetland system with long-term hydrologic analysis to determine the impacts of different design strategies. This relationship also indicates that the hydraulic efficiency will not be significantly influenced by the length-to-width ratio for heavily vegetated wetlands where short-circuiting occurs. The aim of the study has been to aid designers of constructed wetlands by developing a qualitative understanding of the hydraulic effects of wetland vegetation and wetland shape on the hydraulic efficiency of the system.
Peer Reviewed Yes
Published Yes
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Copyright Statement Copyright 2005 Elsevier : Reproduced in accordance with the copyright policy of the publisher : This journal is available online - use hypertext links.
Volume 25
Page from 61
Page to 72
ISSN 0925-8574
Date Accessioned 2006-03-18
Language en_AU
Faculty Faculty of Engineering and Information Technology
Subject PRE2009-Environmental Engineering Modelling
Publication Type Journal Articles (Refereed Article)
Publication Type Code c1

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