dc.contributor.author |
Deksissa, T
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dc.contributor.author |
Meirlaen, J
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dc.contributor.author |
Ashton, PJ
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dc.contributor.author |
Vanrolleghem, PA
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dc.date.accessioned |
2007-06-12T07:23:24Z |
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dc.date.available |
2007-06-12T07:23:24Z |
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dc.date.issued |
2004-06 |
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dc.identifier.citation |
Deksissa, T, et al. 2004. Simplifying dynamic river water quality modelling: A case study of inorganic nitrogen dynamics in the Crocodile River (South Africa). Water Air and Soil pollution, vol 155, 04 January, pp 303-320. |
en |
dc.identifier.issn |
0049-6979 |
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dc.identifier.uri |
http://hdl.handle.net/10204/530
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dc.description |
Copyright: 2004 Kluwer Academic Publishers. |
en |
dc.description.abstract |
This study aims to develop a simple dynamic river water quality model that can be applicable in a data limited situation and is compatible with typical activated sludge models, so that the model can be used in integrated modelling of wastewater and river water quality in the future. A simplified river water quality model was formulated based on a conceptual hydraulic sub-model and simplification of an existing river water quality model. The simplified water quality was derived from the River Water Quality Model No. 1, which is one of the most comprehensive basic river water quality models available in literature. The applicability of the simplified model in data limited situations was investigated using a case study of inorganic nitrogen (nitrate and ammonia) in the Crocodile River (South Africa). The model was calibrated and validated on the basis of independent data collected for four years (1987–1990). The results show that the model can adequately describe the seasonal dynamics of inorganic nitrogen in the Crocodile River. The sensitivity of the model output to the model inputs was also analyzed, and the results indicate that the model is most sensitive to the microbial biomass (nitrifier) followed by hydraulic parameters. The relation of river flow versus concentration of inorganic nitrogen in the downstream section of the river was also examined in order to identify the main source and critical time for nitrate pollution. |
en |
dc.language.iso |
en |
en |
dc.publisher |
Kluwer Academic Publishers. |
en |
dc.subject |
Inorganic nitrogen |
en |
dc.subject |
Dynamic modelling |
en |
dc.subject |
River water quality |
en |
dc.subject |
Sensitivity analysis |
en |
dc.subject |
Environmental sciences |
en |
dc.subject |
Water Resources |
en |
dc.title |
Simplifying dynamic river water quality modelling: A case study of inorganic nitrogen dynamics in the Crocodile River (South Africa). |
en |
dc.type |
Article |
en |
dc.identifier.apacitation |
Deksissa, T., Meirlaen, J., Ashton, P., & Vanrolleghem, P. (2004). Simplifying dynamic river water quality modelling: A case study of inorganic nitrogen dynamics in the Crocodile River (South Africa). http://hdl.handle.net/10204/530 |
en_ZA |
dc.identifier.chicagocitation |
Deksissa, T, J Meirlaen, PJ Ashton, and PA Vanrolleghem "Simplifying dynamic river water quality modelling: A case study of inorganic nitrogen dynamics in the Crocodile River (South Africa)." (2004) http://hdl.handle.net/10204/530 |
en_ZA |
dc.identifier.vancouvercitation |
Deksissa T, Meirlaen J, Ashton P, Vanrolleghem P. Simplifying dynamic river water quality modelling: A case study of inorganic nitrogen dynamics in the Crocodile River (South Africa). 2004; http://hdl.handle.net/10204/530. |
en_ZA |
dc.identifier.ris |
TY - Article
AU - Deksissa, T
AU - Meirlaen, J
AU - Ashton, PJ
AU - Vanrolleghem, PA
AB - This study aims to develop a simple dynamic river water quality model that can be applicable in a data limited situation and is compatible with typical activated sludge models, so that the model can be used in integrated modelling of wastewater and river water quality in the future. A simplified river water quality model was formulated based on a conceptual hydraulic sub-model and simplification of an existing river water quality model. The simplified water quality was derived from the River Water Quality Model No. 1, which is one of the most comprehensive basic river water quality models available in literature. The applicability of the simplified model in data limited situations was investigated using a case study of inorganic nitrogen (nitrate and ammonia) in the Crocodile River (South Africa). The model was calibrated and validated on the basis of independent data collected for four years (1987–1990). The results show that the model can adequately describe the seasonal dynamics of inorganic nitrogen in the Crocodile River. The sensitivity of the model output to the model inputs was also analyzed, and the results indicate that the model is most sensitive to the microbial biomass (nitrifier) followed by hydraulic parameters. The relation of river flow versus concentration of inorganic nitrogen in the downstream section of the river was also examined in order to identify the main source and critical time for nitrate pollution.
DA - 2004-06
DB - ResearchSpace
DP - CSIR
KW - Inorganic nitrogen
KW - Dynamic modelling
KW - River water quality
KW - Sensitivity analysis
KW - Environmental sciences
KW - Water Resources
LK - https://researchspace.csir.co.za
PY - 2004
SM - 0049-6979
T1 - Simplifying dynamic river water quality modelling: A case study of inorganic nitrogen dynamics in the Crocodile River (South Africa)
TI - Simplifying dynamic river water quality modelling: A case study of inorganic nitrogen dynamics in the Crocodile River (South Africa)
UR - http://hdl.handle.net/10204/530
ER -
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en_ZA |