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J Environ Sci (China)

Title:		Monitoring of 943 organic micropollutants in wastewater from municipal wastewater treatment plants with secondary and advanced treatment processes
Author(s):		Wang J; Tian Z; Huo Y; Yang M; Zheng X; Zhang Y;
Address:		"State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China. Electronic address: juanwang@rcees.ac.cn. State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China. State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China. North China Municipal Engineering Design & Research Institute, Tianjin 300074, China. State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; University of Chinese Academy of Sciences, Beijing 100049, China. Electronic address: zhangyu@rcees.ac.cn"
Journal Title:		J Environ Sci (China)
Year:		2018
Volume:		20171004
Issue:
Page Number:		309 - 317
DOI:		10.1016/j.jes.2017.09.014
ISSN/ISBN:		1001-0742 (Print) 1001-0742 (Linking)
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, based on their detection frequency and concentration in secondary and final effluents, were polycyclic aromatic hydrocarbons (PAHs) (2-methylnaphthalene, fluoranthene, pyrene, naphthalene and phenanthrene), phosphorus flame retardants (tributyl phosphate (TBP), tris(2-chloroethyl) phosphate (TCEP) and tris(1,3-dichloro-2-propyl) phosphate (TDCP)), phthalates (bis(2-ethylhexyl)phthalate (DEHP)), benzothiazoles (benzothiazole, 2-(methylthio)-benzothiazol, and 2(3H)-benzothiazolone) and phenol. This study indicated that the presence of considerable amounts of micropollutants in secondary effluent creates the need for suitable advanced treatment before their reuse"
Keywords:		"China *Environmental Monitoring Flame Retardants/analysis Organophosphates/analysis Volatile Organic Compounds/analysis *Waste Disposal, Fluid Wastewater/*chemistry Water Pollutants, Chemical/*analysis Advanced treatment Automated identification and quant;"
Notes:		"MedlineWang, Juan Tian, Zhe Huo, Yingbin Yang, Min Zheng, Xingcan Zhang, Yu eng Netherlands 2018/05/21 J Environ Sci (China). 2018 May; 67:309-317. doi: 10.1016/j.jes.2017.09.014. Epub 2017 Oct 4"