Alternative analysis of BOD removal in subsurface flow constructed wetlands employing Monod kinetics

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Show simple item record Mitchell, CA McNevin, D 2009-12-21T02:30:45Z 2001-01
dc.identifier.citation Water Research, 2001, 35 (5), pp. 1295 - 1303
dc.identifier.issn 0043-1354
dc.identifier.other C1 en_US
dc.description.abstract A new, mechanistic approach for design and analysis of subsurface flow (SSF) constructed wetlands is presented. The model is based on the assumption that the biological processes in wetlands, like other biological systems, exhibit Monod kinetics. A Monod approach fits well with observed wetland performance. It predicts first-order behaviour at low concentrations, that is, pollutant removal rates which increase with increasing pollutant concentration; and zero-order or saturated behaviour at high pollutant concentrations, that is, a maximum pollutant removal rate. A kinetic analysis of subsurface flow constructed wetlands exhibiting Monod kinetics reveals that loading rate, as well as the zero-order degradation rate constant, are essential parameters for efficient wetlands design for the removal of organic carbon. In particular, Monod kinetics enables the identification of an absolute maximum removal rate which is necessary to prevent undersizing in design. This is significant because it represents a theoretical upper bound on loading rate for wetlands design. The analysis is applied to wetlands data collected in North America by the US EPA in order to extract design criteria for BOD removal. It reveals that maximum loadings for SSF wetlands are at least 80kgha-1d-1 for BOD. In addition, a new dimensionless performance efficiency parameter, Omega, is presented as a more effective means of comparing wetland performance.
dc.publisher Pergamon
dc.relation.isbasedon 10.1016/S0043-1354(00)00373-0
dc.title Alternative analysis of BOD removal in subsurface flow constructed wetlands employing Monod kinetics
dc.type Journal Article
dc.parent Water Research
dc.journal.volume 5
dc.journal.volume 35
dc.journal.number 5 en_US
dc.publocation USA en_US
dc.identifier.startpage 164 en_US
dc.identifier.endpage 186 en_US Management en_US
dc.personcode 010821
dc.description.keywords constructed wetlands
dc.description.keywords kinetics
dc.description.keywords Monod
dc.description.keywords design
dc.description.keywords performance
dc.description.keywords loading rate
dc.description.keywords removal rate
pubs.embargo.period Not known
pubs.organisational-group /University of Technology Sydney
pubs.organisational-group /University of Technology Sydney/DVC (Research)
pubs.organisational-group /University of Technology Sydney/DVC (Research)/Institute For Sustainable Futures
pubs.organisational-group /University of Technology Sydney/Strength - Sustainable Futures
utslib.copyright.status Closed Access 2015-04-15 12:17:09.805752+10
utslib.collection.history Closed (ID: 3)

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