Modeling water quality parameter bod in johor river and muar river

Rivers are one of the important sources of water. Rivers also support a diverse flora and fauna. As Malaysia is a fast becoming an industrial country, many of the rivers have become polluted. Water pollution is very harmful to human, animals and water life. Therefore, water quality models are very i...

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Main Author:	Puah, Lih Chii
Format:	Thesis
Language:	English
Published:	2015
Subjects:	Q Science (General)
Online Access:	http://eprints.utm.my/id/eprint/81442/1/PuahLihChiiMFS2015.pdf
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id	my-utm-ep.81442
record_format	uketd_dc
spelling	my-utm-ep.814422019-08-23T05:18:42Z Modeling water quality parameter bod in johor river and muar river 2015 Puah, Lih Chii Q Science (General) Rivers are one of the important sources of water. Rivers also support a diverse flora and fauna. As Malaysia is a fast becoming an industrial country, many of the rivers have become polluted. Water pollution is very harmful to human, animals and water life. Therefore, water quality models are very important to describe and to predict the observed effects of a change in the river system. Biochemical oxygen demand (BOD) concentration data of Sungai Johor and Sungai Muar in Johor were fitted to two models, namely Streeter-Phelps and nonlinear regression (NLR) models, by using weighted least squares method and Gauss-Newton method respectively. BOD is one of the indicators for river. The data used in the study is BOD concentration data of Sungai Johor and Sungai Muar in Johor state from year 1981 to year 1990 and the data were obtained from Drainage and Irrigation Department Malaysia. The performance of the results was tested by mean squared error (MSE). The NLR model gives the smaller MSE values for Sungai Johor and Sungai Muar with values of 0.662319 and 2.367337 respectively. Conclusively, the results showed that NLR model is a better model than Streeter-Phelps model in estimating the parameters of BOD concentration data of Sungai Johor and Sungai Muar in Johor. 2015 Thesis http://eprints.utm.my/id/eprint/81442/ http://eprints.utm.my/id/eprint/81442/1/PuahLihChiiMFS2015.pdf application/pdf en public http://dms.library.utm.my:8080/vital/access/manager/Repository/vital:120130 masters Universiti Teknologi Malaysia Mathematics
institution	Universiti Teknologi Malaysia
collection	UTM Institutional Repository
language	English
topic	Q Science (General)
spellingShingle	Q Science (General) Puah, Lih Chii Modeling water quality parameter bod in johor river and muar river
description	Rivers are one of the important sources of water. Rivers also support a diverse flora and fauna. As Malaysia is a fast becoming an industrial country, many of the rivers have become polluted. Water pollution is very harmful to human, animals and water life. Therefore, water quality models are very important to describe and to predict the observed effects of a change in the river system. Biochemical oxygen demand (BOD) concentration data of Sungai Johor and Sungai Muar in Johor were fitted to two models, namely Streeter-Phelps and nonlinear regression (NLR) models, by using weighted least squares method and Gauss-Newton method respectively. BOD is one of the indicators for river. The data used in the study is BOD concentration data of Sungai Johor and Sungai Muar in Johor state from year 1981 to year 1990 and the data were obtained from Drainage and Irrigation Department Malaysia. The performance of the results was tested by mean squared error (MSE). The NLR model gives the smaller MSE values for Sungai Johor and Sungai Muar with values of 0.662319 and 2.367337 respectively. Conclusively, the results showed that NLR model is a better model than Streeter-Phelps model in estimating the parameters of BOD concentration data of Sungai Johor and Sungai Muar in Johor.
format	Thesis
qualification_level	Master's degree
author	Puah, Lih Chii
author_facet	Puah, Lih Chii
author_sort	Puah, Lih Chii
title	Modeling water quality parameter bod in johor river and muar river
title_short	Modeling water quality parameter bod in johor river and muar river
title_full	Modeling water quality parameter bod in johor river and muar river
title_fullStr	Modeling water quality parameter bod in johor river and muar river
title_full_unstemmed	Modeling water quality parameter bod in johor river and muar river
title_sort	modeling water quality parameter bod in johor river and muar river
granting_institution	Universiti Teknologi Malaysia
granting_department	Mathematics
publishDate	2015
url	http://eprints.utm.my/id/eprint/81442/1/PuahLihChiiMFS2015.pdf
_version_	1747818332806971392

Modeling water quality parameter bod in johor river and muar river

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