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http://dx.doi.org/10.4491/KSEE.2012.34.5.326

Study on Concentrations and Mass Flows of Perfluorinated Compounds (PFCs) in a Wastewater Treatment Plant  

Park, Jong-Eun (Department of Environmental Engineering, Chonbuk National University)
Kim, Seong-Kyu (Department of Marine Science, University of Incheon)
Oh, Jung-Keun (Department of Environmental Engineering, Chonbuk National University)
Ahn, Sung-Yun (Department of Environmental Engineering, Chonbuk National University)
Lee, Mi-Na (Department of Environmental Engineering, Chonbuk National University)
Cho, Chon-Rae (Korea Reasearch Institute of Chemical Technology)
Kim, Kyoung-Soo (CRD, Core Technology Lab. Samsung SDI)
Publication Information
Abstract
To determine the concentrations and the mass flow of selected 10 perfluorinated compounds (PFCs), a field study was conducted in a wastewater treatment plant. Raw influent, primary influent, primary effluent, aeration tank effluent, secondary effluent, final effluent, dehydration liquor, primary sludge, thickened sludge, final sludge were collected over 3 days in the summer and the winter respectively. Collected samples were equally mixed and then served as an analytical sample. Total 10 compounds were analyzed. In terms of treated water, the concentration of perfluorooctanesulfonate (PFOS) and perfluorooctanoate (PFOA) were in range of N.D.~26.29 ng/L and N.D.~38.15 ng/L respectively. Perfluorononanoate (PFNA) and perfluorohexanesulfonate (PFHxS) were ranged from N.D. to 36.79 ng/L and from N.D. to 24.36 ng/L. In terms of sludges, a concentration of PFOS, PFOA, and perfluorodecanesulfonate (PFDS) were detected from 6.82 to 59.37 ng/g, from 0.13 to 0.37 ng/g, from N.D. to 0.83 ng/g respectively. Mass loading for PFCs increased during wastewater treatment except for PFNA. The observed increase in mass flow of PFCs may have resulted from biodegradation of precursor compounds.
Keywords
PFCs; Wastewater Treatment Plant; Mass Flow; Concentration;
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