Monitoring of Hazardous Chemicals for Wastewater Discharge Facilities in the Nakdong River Basin

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Research article

Journal of the Korean Society for Environmental Analysis 2011;14(3):128-136.

낙동강 수계 배출원별 유해물질 오염실태 조사

이인정¹, 이철구¹, 허성남¹, 이재관¹, 김혜란¹, 양득석², 김종하², 이용희²

¹국립환경과학원
²대구지방환경청

Abstract

There are many industrial factories in the central Nakdong river basin and have been occurred water pollution accidents by hazardous chemicals such as phenol, 1,4-dioxane and perchlorate. The object of this study is to establish the database on the hazardous chemicals for the industrial wastewater and to prevent the pollutant accident of the Nakdong river. We categorized 20 hazardous chemicals potentially discharged into the Nakdong river. The concentrations of 20 compounds were measured in surface water samples, wastewater treatment plants(WWTPs) influents/effluents and wastewater discharge facilities in the Nakdong River basin. One compound(1,4-dioxane) was detected in surface waters and three(1,4-dioxane, perchlorate, vinyl acetate) were detected in WWTPs. Eleven compounds(beryllium, perchlorate, 1,3-butadiene, vinyl acetate, ethyl acrylate,styrene, hexachloroethane, 1,4-dioxane, diethyl phthalate, di-n-butyl phthalate, 4,4'-bisphenol A) were detected in wastewater discharge facilities. 1,4-Dioxane was most frequently observed in surface waters, WWTPs and wastewater discharge facilities.

Key Words: hazardous chemicals, Nakdong river basin, wastewater discharge facilities