The role of constructed wetlands in secondary effluent treatment and water reuse in subtropical and arid Australia

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Title The role of constructed wetlands in secondary effluent treatment and water reuse in subtropical and arid Australia
Author Greenway, Margaret
Journal Name Ecological Engineering
Year Published 2005
Place of publication Netherlands
Publisher Elsevier
Abstract Water reclamation and reuse is being actively promoted in Australia. In Queensland, surface-flow constructed wetlands with a diversity of macrophyte types offer the greatest potential for effluent polishing. Constructed wetlands in subtropical climates in coastal regions and arid climates in inland western regions are conducive to high macrophyte growth rates and nutrient removal, in particular nitrogen, producing an effluent suitable for irrigation, restoration of wetlands and/or release into natural waterways. Faecal-coliform removal is also high, producing effluent with <1000 cfu/100 mL and as low as 100 cfu/100 mL, acceptable for agricultural irrigation. Constructed wetlands can be designed to maximise the removal of both nutrients and pathogens by enhancing macrophyte diversity and natural disinfection processes by incorporating lagoons, shallow-water wetlands and subsurface-flow wetlands into the treatment train. Surface-flow wetlands can also be designed to minimise mosquito breeding by increasing macro-invertebrate predators, thereby alleviating community concerns about potential health risks. This paper addresses the role of constructed wetlands in nutrient and pathogen removal in Queensland's wetlands, and presents three case studies with respect to effluent reuse.
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 501
Page to 509
ISSN 0925-8574
Date Accessioned 2006-03-18
Language en_AU
Faculty Faculty of Engineering and Information Technology
Subject PRE2009-Bio-remediation; PRE2009-Environmental Engineering Design; PRE2009-Environmental Technologies
Publication Type Journal Articles (Refereed Article)
Publication Type Code c1

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