墨西哥城市污水处理厂采用常规活性污泥和紫外线辐射去除新出现的污染物和抗生素

IF 2.4 4区 环境科学与生态学 Q2 WATER RESOURCES Water Quality Research Journal Pub Date : 2021-08-01 DOI:10.2166/wqrj.2021.013
Ángeles Martínez-Orgániz, J. E. Bravo, M. Llompart, T. Dagnac, J. Pablo Lamas, Lua Vazquez, L. Sampedro-Rosas
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引用次数: 7

摘要

在Gro Acapulco市某城市污水处理厂(WWTP)中,确定了不同类别的新兴污染物(药物、农药、激素、非法药物和阻燃剂),并测定了4种抗生素(磺胺甲恶唑62.2-94.4%、环丙沙星71-83.1%、诺氟沙星82-89%和氧氟沙星78-97.9%)的去除率。墨西哥。采用固相萃取法(SPE)从进水和出水样品中提取化合物。采用液相色谱-高分辨率质谱法(LC-HRMS)对非目标EPs进行鉴定。采用液相色谱-串联质谱法(LC-MS/MS)对抗生素进行定量分析。大多数非目标化合物仅在进水样品中检测到。抗生素左氧氟沙星和钠利地酸、抗惊厥药卡马西平和氧卡马西平、局麻药利多卡因和农药三毒霉是未被污水处理厂去除的主要EPs。在本研究中,研究表明,Aguas Blancas污水处理厂并不能100%去除废水中发现的各种EPs,尽管在大多数情况下消除程度很高,尽管它是墨西哥的模式工厂之一。
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Emerging pollutants and antibiotics removed by conventional activated sludge followed by ultraviolet radiation in a municipal wastewater treatment plant in Mexico
Different groups of emerging pollutants (EPs) were identified (drugs, pesticides, hormones, illicit drugs, and fire retardant), and the removal of four antibiotics was determined (sulfamethoxazole 62.2–94.4%, ciprofloxacin 71–83.1%, norfloxacin 82–89%, and ofloxacin 78–97.9%) in a municipal wastewater treatment plant (WWTP) in Acapulco, Gro. Mexico. The compounds were extracted from influent and effluent samples by solid phase extraction (SPE). The identification of non-target EPs was performed by liquid chromatography coupled with high-resolution mass spectrometry (LC-HRMS). The antibiotic quantification was performed by liquid chromatography coupled with tandem mass spectrometry (LC-MS/MS). Most of the non-target compounds were detected only in the influent samples. Antibiotics levofloxacin and nalidixic acid, the anticonvulsants carbamazepine and oxycarbamazepine, the local anesthetic lidocaine, and the pesticide tridemorph were the main EPs not removed by the WWTP. In this study, it was shown that the Aguas Blancas WWTP does not manage to remove 100% of the various EPs identified in the effluent, although the elimination degree is high in most cases, despite being one of the model plants in Mexico.
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