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http://dx.doi.org/10.15681/KSWE.2022.38.6.275

Water Quality Variation and Corrosion Index Characteristics of Underground Reservoir in Apartment  

JunYoung, Jang (Department of Environment Engineering, Seoul National University of Science and Technology)
JooWon, Kim (Department of Environment Engineering, Seoul National University of Science and Technology)
YuHoon, Hwang (Department of Environment Engineering, Seoul National University of Science and Technology)
KiPal, Kim (K-1ecotech Co,, Ltd)
HyunSang, Shin (Department of Environment Engineering, Seoul National University of Science and Technology)
ByungRan, Lim (Department of Environment Engineering, Seoul National University of Science and Technology)
Publication Information
Journal of Korean Society on Water Environment / v.38, no.6, 2022 , pp. 275-281 More about this Journal
Abstract
To maintain water quality after water treatment, monitoring whether the quality of treated tap water quality changes is essential. However, current investigations are insufficient to prevent secondary contamination in drinking water supply systems. This study investigated Gyeonggi's e apartment where a red water problem occurred and monitored the water quality and corrosiveness of the overall water supply system to the apartment from June 2021 to April 2022. In a comparison of drinking water quality after water treatment and the influent of the reservoir, turbidity and heavy metal concentrations were increased and residual chlorine was decreased due to increases in temperature. Correlation analysis and principal component analysis (PCA) indicated that a low level of residual chlorine may cause the abscission of Mn2+ and Fe2+ through microorganism activation, which also causes a high level of turbidity. The corrosion index (LI) in the influent of the reservoir tank was increased due to Ca2+ and temperature. These results indicate that the corrosiveness of drinking water and the deterioration of drinking water quality were mainly increased between the drinking water treatment plant and the reservoir tank's influent. The findings provide clear evidence that it is essential to manage water supply systems and reservoir tanks to prevent the secondary contamination of drinking water.
Keywords
Corrosion index; Drinking water; Turbidity; Underground reservoir; Water quality;
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Times Cited By KSCI : 6  (Citation Analysis)
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