Bacterial Modelling Of A Rural Tropical Stream Using The Qual2k Model

Lesley Maurice, Bilung and Ling, Teck Yee and Lim, S. W. and Lee, Nyanti (2014) Bacterial Modelling Of A Rural Tropical Stream Using The Qual2k Model. Journal of Sustainability Science and Management, 9 (2). pp. 58-70. ISSN 1823-8556

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Previous studies showed that the Serin River and its tributaries water and sediment were contaminated with Escherichia coli (E. coli) due to human activities along the river. Since the water of this river is important as a source of drinking water, body contact recreation, laundry and fish culture, it is important that E. coli count be kept at a safe level for the health of the communities. Therefore, the objective of this study is to utilize the water quality model to simulate E. coli concentration in the river water for its designated use. The QUAL2K model was calibrated and validated using field data from October 2009 to March 2010. The results showed that 80% of the predicted concentrations fall in the range of the observed values. Subsequently, the model was applied to simulate two different scenarios of designated use. The model simulation results showed that for the river water to be suitable as drinking water, no E. coli should be discharged from the headwater and from Bukah tributary. As for the suitability of the river water for recreational purposes, the maximum allowable concentrations of E. coli for the headwater, and the following tributaries, namely, the Bukah River, Pam River and Bukar River were 400 CFU/100mL, 900 CFU/100mL, 1000 CFU/100mL and 380 CFU/100mL respectively during low water level. During high water level, the maximum allowable concentrations from those tributaries are higher than that during low level due to increased dilution.

Item Type: Article
Uncontrolled Keywords: Water quality modelling, Serin River, E. coli, QUAL2K, unimas, university, universiti, Borneo, Malaysia, Sarawak, Kuching, Samarahan, ipta, education, research, Universiti Malaysia Sarawak.
Subjects: G Geography. Anthropology. Recreation > GE Environmental Sciences
S Agriculture > S Agriculture (General)
Divisions: Academic Faculties, Institutes and Centres > Faculty of Resource Science and Technology
Faculties, Institutes, Centres > Faculty of Resource Science and Technology
Depositing User: Gani
Date Deposited: 10 Aug 2020 03:23
Last Modified: 10 Aug 2020 03:23

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