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首页> 外文期刊>Environmental Science & Technology >Molecular Characterization of Organics Removed by a Covalently Bound Inorganic-Organic Hybrid Coagulant for Advanced Treatment of Municipal Sewage
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Molecular Characterization of Organics Removed by a Covalently Bound Inorganic-Organic Hybrid Coagulant for Advanced Treatment of Municipal Sewage

机译：共价结合的无机-有机混合混凝剂去除有机物的分子特征，用于城市污水的深度处理

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摘要

Coagulation is an important process to remove organics from water. The molecular composition and structure of organic matter influence water quality in many ways, and the lack of information regarding the organics removed by different coagulants makes it challenging to optimize coagulation processes and ensure reclaimed water safety. In this paper, we investigated coagulation of secondary biological effluent from a municipal sewage treatment plant with different coagulants. We emphasized investigation of organics removal characteristics at the molecular level using Fourier transformion cyclotron resonance mass spectrometry (FT-ICR MS) coupled with electrospray ionization (ESI). We found that conventional coagulants can only partially remove condensed polycyclic aromatics and polyphenols with low H/C (H/C 0.7) and highly unsaturated and phenolic compounds and aliphatic compounds with high O/C (O/C 0.6). A new coagulant, CBHyC, had better removal efficiencies for all organics with different element compositions and molecular structures, especially organics that are resistant to conventional coagulants such as highly unsaturated and phenolic compounds and aliphatic compounds located in 0.3 O/C 0.8 and 1.0 H/C 2.0 regions and sulfur-containing compounds with higher O/C (e.g., anionic surfactants and their metabolites or coproducts). This study provides molecular insights into the organics removed by different coagulants and provides data supporting the possible optimization of advanced wastewater treatment processes.
机译：混凝是从水中去除有机物的重要过程。有机物的分子组成和结构以多种方式影响水质，缺乏有关由不同混凝剂去除的有机物的信息，这对优化混凝过程和确保再生水安全性提出了挑战。在本文中，我们研究了使用不同混凝剂对市政污水处理厂的次生生物废水进行混凝。我们强调使用傅里叶变换回旋共振质谱（FT-ICR MS）结合电喷雾电离（ESI）在分子水平上研究有机物的去除特性。我们发现常规凝结剂只能部分除去H / C（H / C <0.7）低，高O / C（O / C> 0.6）的高度不饱和和酚类化合物以及脂族化合物的缩合多环芳族化合物和多酚。对于具有不同元素组成和分子结构的所有有机物，新的混凝剂CBHyC具有更好的去除效率，尤其是对常规混凝剂具有抵抗力的有机物，例如0.3

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  • 来源
    《Environmental Science & Technology》 |2018年第21期|12642-12648|共7页
  • 作者

    Geng Chun-Xiang; Cao Na; Xu Wei; He Chen; Yuan Zi-Wen; Liu Jin-Wei; Shi Quan; Xu Chun-Ming; Liu Si-Tong; Zhao Hua-Zhang;

  • 作者单位

    Peking Univ, Coll Environm Sci & Engn, Beijing 100871, Peoples R China;

    Minist Educ, Key Lab Water & Sediment Sci, Beijing 100871, Peoples R China;

    China Univ Petr, Coll Chem & Chem Engn, Qingdao 266555, Peoples R China;

    China Univ Petr, State Key Lab Heavy Oil Proc, Beijing 102249, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
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