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Numerical model for the transport and degradation of pollutants through wetlands

Constructed wetlands are increasingly being designed and used to treat wastewaters. The majority of constructed wetlands are designed based on steady-state releases of pollutant loading. However, in some cases (i.e., aquaculture ponds) pollutant loadings are not steady-state, rather are intermittent...

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Main Authors: Imteaz, Monzur Alam, Uddameri, Venkatesh, Ahsan, Amimul
Format: Article
Language:English
Published: Inderscience 2016
Online Access:http://psasir.upm.edu.my/id/eprint/53403/1/Numerical%20model%20for%20the%20transport%20and%20degradation%20of%20pollutants%20through%20wetlands%20.pdf
http://psasir.upm.edu.my/id/eprint/53403/
http://www.inderscienceonline.com/doi/abs/10.1504/IJW.2016.073738
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spelling my.upm.eprints.534032017-10-27T03:59:23Z http://psasir.upm.edu.my/id/eprint/53403/ Numerical model for the transport and degradation of pollutants through wetlands Imteaz, Monzur Alam Uddameri, Venkatesh Ahsan, Amimul Constructed wetlands are increasingly being designed and used to treat wastewaters. The majority of constructed wetlands are designed based on steady-state releases of pollutant loading. However, in some cases (i.e., aquaculture ponds) pollutant loadings are not steady-state, rather are intermittent. Analysis based on steady-state release (inflow) will be quite different from an analysis based on intermittent loading/inflow. A simple numerical model was developed based on conservation of mass principle for the pollutants and convection through a wetland, considering a series of tanks. Tank-in-series approach assumes that the wetland is comprised of several interconnected tanks, each of which can be modelled as a continuous flow stirred tank reactor. The developed numerical model can simulate pollutant transport and degradations for steady-state, continuous and/or irregular/intermittent pollutant loadings. Numerical model results were verified with earlier developed analytical solutions for intermittent pollutant loadings. Numerical model results are very close to the results derived from analytical solutions for the same condition. The developed numerical model was used to present different scenarios using different flow rates, pond volumes, degradation constants and different masses of intermittent pollutants. Inderscience 2016 Article PeerReviewed application/pdf en http://psasir.upm.edu.my/id/eprint/53403/1/Numerical%20model%20for%20the%20transport%20and%20degradation%20of%20pollutants%20through%20wetlands%20.pdf Imteaz, Monzur Alam and Uddameri, Venkatesh and Ahsan, Amimul (2016) Numerical model for the transport and degradation of pollutants through wetlands. International Journal of Water, 10 (1). pp. 1-12. ISSN 1465-6620; ESSN:1741-5322 http://www.inderscienceonline.com/doi/abs/10.1504/IJW.2016.073738 10.1504/IJW.2016.073738
institution Universiti Putra Malaysia
building UPM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Putra Malaysia
content_source UPM Institutional Repository
url_provider http://psasir.upm.edu.my/
language English
description Constructed wetlands are increasingly being designed and used to treat wastewaters. The majority of constructed wetlands are designed based on steady-state releases of pollutant loading. However, in some cases (i.e., aquaculture ponds) pollutant loadings are not steady-state, rather are intermittent. Analysis based on steady-state release (inflow) will be quite different from an analysis based on intermittent loading/inflow. A simple numerical model was developed based on conservation of mass principle for the pollutants and convection through a wetland, considering a series of tanks. Tank-in-series approach assumes that the wetland is comprised of several interconnected tanks, each of which can be modelled as a continuous flow stirred tank reactor. The developed numerical model can simulate pollutant transport and degradations for steady-state, continuous and/or irregular/intermittent pollutant loadings. Numerical model results were verified with earlier developed analytical solutions for intermittent pollutant loadings. Numerical model results are very close to the results derived from analytical solutions for the same condition. The developed numerical model was used to present different scenarios using different flow rates, pond volumes, degradation constants and different masses of intermittent pollutants.
format Article
author Imteaz, Monzur Alam
Uddameri, Venkatesh
Ahsan, Amimul
spellingShingle Imteaz, Monzur Alam
Uddameri, Venkatesh
Ahsan, Amimul
Numerical model for the transport and degradation of pollutants through wetlands
author_facet Imteaz, Monzur Alam
Uddameri, Venkatesh
Ahsan, Amimul
author_sort Imteaz, Monzur Alam
title Numerical model for the transport and degradation of pollutants through wetlands
title_short Numerical model for the transport and degradation of pollutants through wetlands
title_full Numerical model for the transport and degradation of pollutants through wetlands
title_fullStr Numerical model for the transport and degradation of pollutants through wetlands
title_full_unstemmed Numerical model for the transport and degradation of pollutants through wetlands
title_sort numerical model for the transport and degradation of pollutants through wetlands
publisher Inderscience
publishDate 2016
url http://psasir.upm.edu.my/id/eprint/53403/1/Numerical%20model%20for%20the%20transport%20and%20degradation%20of%20pollutants%20through%20wetlands%20.pdf
http://psasir.upm.edu.my/id/eprint/53403/
http://www.inderscienceonline.com/doi/abs/10.1504/IJW.2016.073738
_version_ 1643835386110148608
score 13.211869

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