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Presence, behaviour and removal of selected organic micropollutants through drinking water treatment
Chemosphere ( IF 5.778 ) Pub Date : 2021-02-22 , DOI: 10.1016/j.chemosphere.2021.130023
Josep Borrull; Agustí Colom; Josepa Fabregas; Francesc Borrull; Eva Pocurull

This paper investigates the occurrence and removal of 60 organic micropollutants (OMPs) including pharmaceuticals, personal care products, pesticides and per- and polyfluoroalkyl substances in a drinking water treatment plant (DWTP) treating raw water from the Ebro River (NE Spain). The behaviour of the OMPs was evaluated in each treatment: pre-ozonation, flocculation-coagulation-decantation-sand filtration, post-ozonation and granular activated carbon filtration. Thirty-one of the sixty OMPs studied were detected in source water with individual median concentrations below 10 ng·L-1 for all the compounds except for caffeine (64.1 ng·L-1). The highest concentration peaks in the source water were found for caffeine (124.5 ng·L-1), terbuthylazine (52.0 ng·L-1), imidacloprid (30.2 ng·L-1) and paracetamol (25.6 ng·L-1). Of the 31 compounds detected in the source water, 17 were also detected in the finished drinking water. Of these 17 compounds, 10 were PFASs, which indicated that this group of compounds had not been effectively removed throughout the drinking water treatments. The overall removal efficiencies of OMPs in the DWTP ranged from -50.9% to 100%. The most efficient removal technologies were ozonation and granular activated carbon.



中文翻译:

饮用水处理中某些有机微量污染物的存在,行为和去除

本文调查了饮用水处理厂(DWTP)处理来自埃布罗河(西班牙西班牙)的原水的60种有机微量污染物(OMP)的发生和去除情况,包括药物,个人护理产品,农药以及全氟和多氟烷基物质。在每种处理中评估OMP的行为:臭氧化前,絮凝-凝结-倾析-砂滤,臭氧化后和颗粒活性炭过滤。在所研究的60种OMP中,有31种在除咖啡因(64.1 ng·L -1)以外的所有化合物中的中位浓度均低于10 ng·L -1。咖啡因(124.5 ng·L -1),丁苯噻嗪(52.0 ng·L)的源水中最高浓度峰-1),吡虫啉(30.2 ng·L -1)和扑热息痛(25.6 ng·L -1)。在原水中检测到的31种化合物中,在最终饮用水中还检测到17种化合物。在这17种化合物中,有10种是PFAS,这表明在整个饮用水处理过程中并未有效去除该类化合物。DWTP中OMP的总体去除效率为-50.9%至100%。最有效的去除技术是臭氧处理和颗粒状活性炭。

更新日期:2021-02-22
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