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논문

수영장 욕조수의 소독방법에 따른 THMs 발생 특성

The Characteristics of THMs Production by Different Disinfection Methods in Swimming Pools Water

하광태|조경덕|이진
한국환경보건학회 (Korean Society of Environmental Health)|2006.04|한국환경보건학회지 (JOURNAL OF ENVIRONMENTAL HEALTH SCIENCES)|제32권 제2호|pp. 171-178

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초록

Abstract

The objectives of this study were to investigate the formation of trihalomethanes (THMs) and to compare the concentration level of THMs of swimming pools water by different disinfection methods such as chlorine, ozone-chlorine, and salt brine electrolysis generator (SBEG). The concentration of chloroform was the highest in the chlorine system, and the SBEG was the highest in the production of bromodichloromethane (BDCM), dibromochloromethane (DBCM) and bromoform. The average concentration of total trihalomethanes (TTHMs) in three disinfection systems were 64.5 27.4 mg/l (SBEG), 43.822.3 mg/l (chlorine), and 30.616.1 mg/l (ozone-chlorine), respectively. In chlorine and ozone-chlorine disinfection system, chloroform concentration was highest, followed by BDCM, then DBCM. In the SBEG, TTHMs was composed of 42% of chloroform, 28.9% of bromoform, 15.1% of BDCM and 14% of DBCM, respectively. The strongest correlation was obtained in the levels of chloroform and TTHMs in chlorine, and ozonechlorine disinfection systems from both indoor and outdoor swimming pools (r=0.989~0.999, p<0.01). In the SBEG, the levels of BDCM and TTHMs showed a good correlation (r=0.913, p<0.01). In chlorine and ozone-chlorine disinfection systems at indoor swimming pools, pH, TOC and KMnO4 consumption showed strong correlation with chloroform and TTHMs concentrations (p<0.01). In the SBEG, pH and TOC were also strongly correlated with chloroform (p<0.01). pH and TTHMs were correlated as well (p<0.05).

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