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首页> 外文期刊>Water Research >New phenolic halogenated disinfection byproducts in simulated chlorinated drinking water: Identification, decomposition, and control by ozone-activated carbon treatment
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New phenolic halogenated disinfection byproducts in simulated chlorinated drinking water: Identification, decomposition, and control by ozone-activated carbon treatment

机译：模拟氯化饮用水中的新型苯酚卤化消毒副产物：通过臭氧活化碳处理进行识别，分解和控制

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摘要

Recently, 13 new phenolic halogenated disinfection byproducts (DBPs) were discovered and confirmed in chlorinated drinking water using ultra performance liquid chromatography/electrospray ionization triple quadrupole mass spectrometry (UPLC/ESI-tqMS), which have been attracting a growing concern due to their higher chronic cytotoxicity, developmental toxicity, and growth inhibition compared with commonly known aliphatic DBPs. In this study, another 12 new phenolic halogenated DBPs were detected and identified in simulated chlorinated drinking water samples, including two monohalo-4-hydroxybenzaldehydes, two monohalo-4-hydroxybenzoic acids, three monohalo-salicylic acids, and five mono/di/trihalo-phenols. Decomposition mechanisms of these new phenolic halogenated DBPs during chlorination were speculated and partially verified by identifying intermediate products. These new DBPs could undergo hydrolysis, halogenation, substitution, addition, decarboxylation, and rearrangement reactions to form a series of decomposition products, including dihaloacetic acids, 2-halomaleic acids, and a group of new heterocyclic DBPs (trihalo-hydroxy-cyclopentene-diones). A bench-scale ozone-granular activated carbon (GAC) treatment unit was designed and set up in the lab. It was found that ozonation and GAC filtration were effective in reducing dissolved organic carbon levels and aromaticity (DBP precursors) of simulated raw water samples, and thus were effective in decreasing the concentrations of these new phenolic DBPs by 82.5% and 88.6%, respectively. Furthermore, four different treatment scenarios (i.e., ozonation, GAC filtration, ozonation followed by GAC filtration, and GAC filtration followed by ozonation) were evaluated and compared. Results showed that ozonation followed by GAC filtration was most effective in precursor removal and could decrease the level of these new phenolic DBPs by up to 97.3%. (C) 2018 Elsevier Ltd. All rights reserved.
机译：最近，使用超高效液相色谱/电喷雾电离三重四极杆质谱（UPLC / ESI-tqMS）在氯化饮用水中发现并确认了13种新的酚类卤代消毒副产物（DBP），由于它们的较高含量，它们引起了越来越多的关注。与常见的脂肪族DBP相比，具有慢性细胞毒性，发育毒性和生长抑制作用。在这项研究中，在模拟的含氯饮用水样品中还检测出了另外12种新的酚式卤代DBP，包括两种单卤代4-羟基苯甲醛，两种单卤代4-羟基苯甲酸，三种单卤代水杨酸和五种单/二/三卤代苯酚。 -酚。推测了这些新的酚卤代DBP在氯化过程中的分解机理，并通过鉴定中间产物部分验证了它们的分解机理。这些新的DBP可能会发生水解，卤化，取代，加成，脱羧和重排反应，形成一系列分解产物，包括二卤代乙酸，2-卤代马来酸和一组新的杂环DBP（三卤代-羟基-环戊烯-二酮） ）。在实验室中设计并建立了一个台式臭氧颗粒活性炭（GAC）处理装置。研究发现，臭氧氧化和GAC过滤可有效降低模拟原水样品中的溶解有机碳含量和芳香度（DBP前体），从而有效地将这些新型酚类DBP的浓度分别降低82.5％和88.6％。此外，评估并比较了四种不同的处理方案（即臭氧化，GAC过滤，臭氧化后加GAC过滤和GAC过滤后臭氧化）。结果表明，臭氧氧化和GAC过滤最有效地去除了前体，并且可以将这些新型酚DBP的含量降低多达97.3％。 （C）2018 Elsevier Ltd.保留所有权利。

著录项

  • 来源
    《Water Research》 |2018年第1期|298-306|共9页
  • 作者

    Huang Yan; Li Huan; Zhou Qing; Li Aimin; Shuang Chendong; Xian Qiming; Xu Bin; Pan Yang;

  • 作者单位

    Nanjing Univ, Sch Environm, State Key Lab Pollut Control & Resource Reuse, Nanjing 210023, Jiangsu, Peoples R China;

    Nanjing Univ, Sch Environm, State Key Lab Pollut Control & Resource Reuse, Nanjing 210023, Jiangsu, Peoples R China;

    Nanjing Univ, Sch Environm, State Key Lab Pollut Control & Resource Reuse, Nanjing 210023, Jiangsu, Peoples R China;

    Nanjing Univ, Sch Environm, State Key Lab Pollut Control & Resource Reuse, Nanjing 210023, Jiangsu, Peoples R China;

    Nanjing Univ, Sch Environm, State Key Lab Pollut Control & Resource Reuse, Nanjing 210023, Jiangsu, Peoples R China;

    Nanjing Univ, Sch Environm, State Key Lab Pollut Control & Resource Reuse, Nanjing 210023, Jiangsu, Peoples R China;

    Tongji Univ, Coll Environm Sci & Engn, State Key Lab Pollut Control & Resource Reuse, Shanghai 200092, Peoples R China;

    Nanjing Univ, Sch Environm, State Key Lab Pollut Control & Resource Reuse, Nanjing 210023, Jiangsu, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Phenolic halogenated disinfection byproducts; Identification; Decomposition; Ozone-granular activated carbon treatment; Drinking water;

    机译：苯酚卤代消毒副产物;鉴定;分解;臭氧颗粒活性炭处理;饮用水;

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