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초록· 키워드
This study was performed to investigate THMs formation by chloramination as a secondary disinfection in drinking water distribution system. As the Cl₂/NH₃-N ratio increased from 1:1 to 4:1, the THMs concentration had actually no change in the breakpoint curve of pH 6, 7. At pH 8, THMs level was not augmented at between 1:1 and 5:1. In the Cl₂/NH₃-N ratio of more than 5:1 and 6:1 respectively, THMs level was raised. Only the chloroform of THMs was insignificantly detected by both preformed chloramine and preammoniation applications, which was probably attributed to the stoichiometrically unstable equilibrium in the preparation of chloramine, whereas CHCl₃, CHCl₂Br and CHClBr₂ of THMs were found in the application of free chlorine. However it turned out that the THMs levels by chloramine was incomparably inferior to that of free chlorine.
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참고문헌
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UCI(KEPA) : I410-ECN-0101-2009-517-012400398
