期刊
SCIENCE OF THE TOTAL ENVIRONMENT
卷 576, 期 -, 页码 549-558出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.scitotenv.2016.10.130
关键词
PFAS; Fluorochemical facility; Wastewater; Sewage sludge; Soil
资金
- Seine-Normandy Water Agency (AESN) [1033326(1)2012]
- Rhone-Mediterranean-Corsica Water Agency (AERM) [2012 1191]
- Water Union of Ile-de-France (SEDIF)
- Ile-de-France Regional Health Agency (ARS) [2012-1/2013-2]
Although industrial sites producing perfluoroalkyl and polyfluoroalkyl substances (PFASs) may introduce these chemicals into the aquatic environment, they are rarely investigated. This study entailed measuring concentrations, mass flows and the fate of 51 PFASs in an industrial wastewater treatment plant receiving raw effluents from a fluorochemical manufacturing facility. Grab and 24-h composite samples were collected at various stages of wastewater treatment over four sampling campaigns. One perfluoroalkyl carboxylic acid (PFCA) and nine fluorotelomers (FTs) were systematically detected in the facility's raw effluent. The overall PFCA mass flow ranged from 0.6 to 8.6 g/day and was negligible compared to the overall mass flow of FTs (from 647 to 2,892 g/day). PFCA mass flows increased drastically after secondary treatment (degradation of precursors) and decreased notably after the floatation tank (adsorption onto floatation sludge), but remained at relatively high levels in the final effluent (from 21 to 247 g/day). Similar patterns in mass flow were observed for the FTs, with mass loadings discharged into the river ranging from 1,623 to 6,963 g/day. Despite analyzing dozens of PFASs, adsorbable organic fluorine determination and oxidative conversion of PFCA precursors showed that a significant part of PFASs remained unidentified. Nevertheless, two overwhelmingly predominant PFASs-6:2 Fluorotelomer sulfonamide alkylbetaine (6:2 FTAB) and 6:2 Fluorotelomer sulfonamide propyl N,N dimethylamine (M4)-were detected and quantified for the first time in water samples, accounting for >75% of the total PFAS mass flow in the final effluent. This study also provided evidence of soil contamination by the aerosol produced over the aeration basin and inadvertent spillage of pieces of sludge cake. (C) 2016 Elsevier B.V. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据