Assessing water quality of drinking water distribution system in the South Taiwan |
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Authors: | Jie-Chung Lou Jia-Yun Han |
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Institution: | (1) Institute of Environmental Engineering, National Sun Yat-Sen University, Kaohsiung, Taiwan, 804 |
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Abstract: | This investigation conducted a full-scale survey the drinking water distribution system in Kaohsiung city, Taiwan. The aim
was to investigate whether the distribution system was capable of maintaining high water quality from the water treatment
facilities through to the end user. The results showed that the distribution system can maintain high water quality, except
for suitable chlorine residuals. The authors plotted chlorine residual contour maps to identify areas with low chlorine residuals,
helping them prioritize sections that must be flushed or renewal. The contour maps also provide sufficient and clear information
for locating booster chlorination stations. Contour maps enable water facilities to identify how water quality decays in the
distribution systems and the locations of such decay. Water quality decay can be caused by properties of pipeline materials,
hydraulic conditions, and/or biofilm thickness. However, understanding the exact reasons is unnecessary because the contour
maps provide sufficient information for trouble-shooting the distribution systems. |
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Keywords: | Distribution system Drinking water quality Free available chlorine contour map TTHMs contour map |
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