In the Citadel area of Hue City, drainage systems that include canals and ponds are considerable sources of fecal contaminants to inundated water during the rainy season because canals and ponds receive untreated wastewater. It is important to investigate the characteristics of hydraulics and water pollution in canals and ponds. At the canals and ponds, water sampling was conducted during dry and wet weather periods in order to evaluate fecal contamination and to investigate changes in water pollution caused by runoff inflow. Inundated water was also collected from streets during heavy rainfall. At the canals and ponds, concentrations of Escherichia coli and total coliform exceeded the Vietnamese regulation values for surface water in 23 and 24 out of 27 samples (85 and 89%), respectively. The water samples were categorized based on the characteristics of water pollution using cluster analysis. In the rainy season, continuous monitoring was conducted at the canals and ponds using water depth and electrical conductivity (EC) sensors to investigate the dynamic relationship between water level and water pollution. It is suggested that in the canals, high EC meant water stagnation and low EC signified river water inflow. Therefore, EC might be a good indicator of water flow change in canals.
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Research Article|
June 14 2014
Characterization of water pollution in drainage networks using continuous monitoring data in the Citadel area of Hue City, Vietnam Available to Purchase
Y. Nagano;
1Department of Urban Engineering, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, Japan
E-mail: [email protected]
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T. Teraguchi;
T. Teraguchi
1Department of Urban Engineering, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, Japan
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P. K. Lieu;
P. K. Lieu
2Department of Environmental Science, College of Sciences, Hue University, 77 Nguyen Hue Street, Hue City, Vietnam
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H. Furumai
H. Furumai
1Department of Urban Engineering, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, Japan
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Water Sci Technol (2014) 70 (4): 612–619.
Article history
Received:
December 04 2013
Accepted:
May 15 2014
Citation
Y. Nagano, T. Teraguchi, P. K. Lieu, H. Furumai; Characterization of water pollution in drainage networks using continuous monitoring data in the Citadel area of Hue City, Vietnam. Water Sci Technol 1 August 2014; 70 (4): 612–619. doi: https://doi.org/10.2166/wst.2014.243
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