DOI: 10.1016/j.watres.2018.05.045
Scopus记录号: 2-s2.0-85046484080
论文题名: Non-target screening to trace ozonation transformation products in a wastewater treatment train including different post-treatments
作者: Schollée J.E. ; Bourgin M. ; von Gunten U. ; McArdell C.S. ; Hollender J.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 142 起始页码: 267
结束页码: 278
语种: 英语
英文关键词: Advanced wastewater treatment
; Micropollutants
; Non-target screening
; Ozonation
; Transformation products
Scopus关键词: Activated carbon
; Activated carbon treatment
; Bioreactors
; Cluster analysis
; Drug products
; Electrospray ionization
; Hierarchical systems
; Liquid chromatography
; Mass spectrometry
; Ozone
; Ozone water treatment
; Ozonization
; Phase separation
; Principal component analysis
; Reclamation
; Electrospray ionization (ESI)
; Hierarchical cluster analysis
; Liquid chromatography high resolution tandem mass spectrometries
; Micropollutants
; Non-target screenings
; On-line solid phase extraction
; Transformation products
; Wastewater treatment plants
; Wastewater treatment
; activated carbon
; activated carbon
; bioreactor
; extraction method
; oxidation
; ozonation
; ozone
; principal component analysis
; transformation
; wastewater treatment
; wastewater treatment plant
; Article
; cluster analysis
; electrospray
; liquid chromatography-mass spectrometry
; ozonation
; principal component analysis
; priority journal
; screening
; waste water management
; water sampling
英文摘要: Ozonation and subsequent post-treatments are increasingly implemented in wastewater treatment plants (WWTPs) for enhanced micropollutant abatement. While this technology is effective, micropollutant oxidation leads to the formation of ozonation transformation products (OTPs). Target and suspect screening provide information about known parent compounds and known OTPs, but for a more comprehensive picture, non-target screening is needed. Here, sampling was conducted at a full-scale WWTP to investigate OTP formation at four ozone doses (2, 3, 4, and 5 mg/L, ranging from 0.3 to 1.0 gO3/gDOC) and subsequent changes during five post-treatment steps (i.e., sand filter, fixed bed bioreactor, moving bed bioreactor, and two granular activated carbon (GAC) filters, relatively fresh and pre-loaded). Samples were measured with online solid-phase extraction coupled to liquid chromatography high-resolution tandem mass spectrometry (LC-HRMS/MS) using electrospray ionization (ESI) in positive and negative modes. Existing non-target screening workflows were adapted to (1) examine the formation of potential OTPs at four ozone doses and (2) compare the removal of OTPs among five post-treatments. In (1), data processing included principal component analysis (PCA) and chemical knowledge on possible oxidation reactions to prioritize non-target features likely to be OTPs. Between 394 and 1328 unique potential OTPs were detected in positive ESI for the four ozone doses tested; between 12 and 324 unique potential OTPs were detected in negative ESI. At a specific ozone dose of 0.5 gO3/gDOC, 27 parent compounds were identified and were related to 69 non-target features selected as potential OTPs. Two OTPs were confirmed with reference standards (venlafaxine N-oxide and chlorothiazide); 34 other potential OTPs were in agreement with literature data and/or reaction mechanisms. In (2), hierarchical cluster analysis (HCA) was applied on profiles detected in positive ESI mode across the WWTP and revealed 11 relevant trends. OTP removal was compared among the five post-treatments and 54–83% of the non-target features that appeared after ozonation were removed, with the two GAC filters performing the best. Overall, these data analysis strategies for non-target screening provide a useful tool to understand the behavior of unknown features during ozonation and post-treatment and to prioritize certain non-targets for further identification. © 2018 Elsevier Ltd Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112622
Appears in Collections: 气候减缓与适应
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作者单位: Eawag, Swiss Federal Institute of Aquatic Science and Technology, Dübendorf, 8600, Switzerland; Institute of Biogeochemistry and Pollutant Dynamics, ETH Zurich, Zürich, 8092, Switzerland; School of Architecture, Civil, and Environmental Engineering (ENAC), École Polytechnique Fedérale de Lausanne, Lausanne, 1015, Switzerland
Recommended Citation:
Schollée J.E.,Bourgin M.,von Gunten U.,et al. Non-target screening to trace ozonation transformation products in a wastewater treatment train including different post-treatments[J]. Water Research,2018-01-01,142