Monitoring of 943 organic micropollutants in wastewater from municipal wastewater treatment plants with secondary and advanced treatment processes

Journal of Environmental Sciences (China)
Juan WangYu Zhang

Abstract

To perform a systematic survey on the occurrence and removal of micropollutants during municipal wastewater treatment, 943 semi-volatile organic chemicals in 32 wastewater samples including influents of secondary treatments, secondary effluents and final effluents (effluents of advanced treatments), which were collected from seven full-scale municipal wastewater treatment plants (MWTPs) in China, were examined by gas chromatography-mass spectrometry (GC-MS) coupled with an automated identification and quantification system with a database (AIQS-DB). In total, 196 and 145 chemicals were detected in secondary and final effluents, respectively. The majority of the total concentrations (average removal efficiency, 87.0%±5.9%) of the micropollutants were removed during secondary treatments. However, advanced treatments achieved different micropollutant removal extents from secondary effluents depending on the different treatment processes employed. Highly variable removal efficiencies of total concentrations (32.7%-99.3%) were observed among the different advanced processes. Among them, ozonation-based processes could remove 70.0%-80.9% of the total concentrations of studied micropollutants. The potentially harmful micropollutants, ...Continue Reading

Citations

Jun 10, 2019·Water Environment Research : a Research Publication of the Water Environment Federation·B S Choudri, Yassine Charabi
Jul 12, 2019·Ambio·Justyna RogowskaLidia Wolska
Nov 18, 2020·Journal of Contaminant Hydrology·Gajendra Kumar GauravDeepak Yadav
Feb 20, 2021·The Science of the Total Environment·Erick R BandalaAshantha Goonetilleke
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Aug 8, 2021·Environmental Science and Pollution Research International·Gustaf Mo Ekelund UggeOlof Berglund
Dec 27, 2021·The Science of the Total Environment·Qingyang ShiJay Gan

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