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Journal of the Korean Society for Environmental Analysis 2018;21(3):165-171.
Correlation between Dissolved Organic-Carbon Distribution Characteristics and Disinfection Byproduct Formation Potential in the Nakdong River
낙동강수계 유기물 분포특성과 소독부산물 생성능과의상관성에 관한 연구
김지혜1, 김정희1, 최일환2, 이영주3, 이은정1
1한국수자원공사
2한국수자원공사 수자원연구원
3친환경수처리연구단
Abstract
Recently, there have been steady increases in the concentration of disinfection byproducts (DBP) in water treatment plants using the Nakdong River as a source. Therefore, a study was carried out investigating the correlation between organic matter and DBP in the Nakdong River water system. There were no significant differences in organic matter concentrations between the main stream and tributaries of the Nakdong River during this study. However, in July and August, the months of heaviest rainfall, humic substances (HS), known to be DBP precursors, increased by over 60% compared with May and June. The origin of organic matter in the Nakdong River was analyzed using an HS-diagram, which generally showed pedogenic fulvic acid (FA) characteristics; this is hypothesized to be the effect of organic material entering with turbid water from upstream. While there was a 26% increase in organic matter in July and August, the DBP trihalomethanes formation potential (THMFP) and haloacetic acid formation potential (HAAFP) increased by 36% and 91%, respectively. Thus, DBP increased at a higher than organic matter during this study. The DBP formation potential per unit organic matter was found to be 0.103 for THMFP and 0.016 for HAAFP.
Key Words: Organic matter, Disinfection ByProduct Formation Potential (DBPFP), Nakdong River, Humic substances
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