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首页> 外文期刊>The Science of the Total Environment >Characteristics and mechanism of dimethyl trisulfide formation during sulfide control in sewer by adding various oxidants
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Characteristics and mechanism of dimethyl trisulfide formation during sulfide control in sewer by adding various oxidants

机译：通过添加各种氧化剂在下水道中硫化物对照期间二甲基三硫化物形成的特征及机制

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摘要

The addition of chemical agents to control the production of hydrogen sulfide (H2S) is currently the principal technology used to control odor emissions from sewers. In this study, laboratory reactors were used to investigate the change in dimethyl trisulhde (DMTS) concentrations when dosing with oxidant to control sulfide in sewers. Our results show that the intermittent addition of oxidant leads to sulfide regeneration and increased DMTS formation. Additional experiments were conducted to investigate the processes that result in the formation of DMTS. The results indicate that the polysulfide produced after oxidant addition was a key intermediate in DMTS production. Enzymatic methylation of polysulfide was an important process in DMTS formation. Dimethylsulfoxide (DMSO) was observed in the reactor when oxidant was again added but it was reduced to DMTS when the oxidant was depleted. There are side-effects of adding oxidant, and alternative control measures for volatile sulfur compounds (VSCs) need to be investigated further. (C) 2019 Elsevier B.V. All rights reserved.
机译：添加化学试剂以控制硫化氢（H2S）的产生是目前用于控制下水道的气味排放的主要技术。在该研究中，使用实验室反应器在用氧化剂给药时在用下水道中对硫化物进行给药时的二甲基三硫醚（DMT）浓度的变化。我们的结果表明，氧化剂的间歇加入导致硫化物再生和增加的DMTS形成。进行额外的实验以研究导致DMTS形成的过程。结果表明，氧化剂加入后产生的多硫化物是DMTs生产中的关键中间体。聚硫化物的酶促甲基化是DMTS形成的重要过程。当再次加入氧化剂时，在反应器中观察二甲基磺砜（DMSO），但当氧化剂耗尽时，将其还原为DMT。添加氧化剂的副作用，需要进一步研究挥发性硫化合物（VSC）的替代控制措施。 （c）2019 Elsevier B.v.保留所有权利。

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  • 来源
    《The Science of the Total Environment》 |2019年第jul10期|719-725|共7页
  • 作者

    Gu Tianfeng; Tan Peiying; Zhou Yongchao; Zhang Yiping; Zhu David; Zhang Tuqiao;

  • 作者单位

    Zhejiang Univ Coll Civil Engn & Architecture Hangzhou 310027 Zhejiang Peoples R China;

    Zhejiang Univ Coll Civil Engn & Architecture Hangzhou 310027 Zhejiang Peoples R China;

    Zhejiang Univ Coll Civil Engn & Architecture Hangzhou 310027 Zhejiang Peoples R China;

    Zhejiang Univ Coll Civil Engn & Architecture Hangzhou 310027 Zhejiang Peoples R China;

    Univ Alberta Dept Civil & Environm Engn Edmonton AB T6G 2W2 Canada;

    Zhejiang Univ Coll Civil Engn & Architecture Hangzhou 310027 Zhejiang Peoples R China;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Sulfide control; Polysulfide; Volatile sulfur compounds (VSCs); Odorants;

    机译：硫化物控制;多硫化物;挥发性硫化合物（VSCs）;气味剂;

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