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首页> 外文期刊>Environmental Science & Technology >Molecular Characteristics and Differences of Effluent Organic Matter from Parallel Activated Sludge and Integrated Fixed-Film Activated Sludge (IFAS) Processes
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Molecular Characteristics and Differences of Effluent Organic Matter from Parallel Activated Sludge and Integrated Fixed-Film Activated Sludge (IFAS) Processes

机译：平行活性污泥和固定化膜活性污泥（IFAS）联合工艺的出水有机物的分子特征和差异

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摘要

A direct comparison between parallel activated sludge and integrated fixed-film activated sludge (IFAS) processes was performed in this study because both treatments received the same primary effluent, although differences may still remain due to different return flow rates. Modern ultrahigh resolution electrospray ionization Fourier transform ion cyclotron resonance mass spectrometry was applied to characterize the complexity of effluent organic matter (EfOM) and to evaluate both processes in their abilities to change the EfOM molecular composition. At different stages during the two processes a direct comparison of the performance and changes in molecular composition of the IFAS with those of the activated sludge was undertaken. Large differences in the molecular composition between both processes were only apparent in the early stage of the aeration cells and the first cell of the IFAS possibly due to the higher flow rate and a delay in aerobic bacterial degradation. Despite the double flow rate (0.263 m~3 s~(-1)) in the IFAS reactors compared to the activated sludge, by the end of the treatment the EfOM composition of both processes were undistinguishable from each other. However, a much more complex EfOM was generated in both processes, suggesting that bacteria are responsible for an increase in molecular diversity in the effluent.
机译：在这项研究中，对平行活性污泥法和集成固定膜活性污泥法（IFAS）进行了直接比较，因为两种处理方法得到的主要出水都相同，尽管由于回流率的不同可能仍然存在差异。现代超高分辨率电喷雾电离傅里叶变换离子回旋共振质谱用于表征废水有机物（EfOM）的复杂性，并评估这两个过程改变EfOM分子组成的能力。在这两个过程的不同阶段，直接比较了IFAS和活性污泥的性能和分子组成的变化。仅在曝气池和IFAS的第一个池的早期，两个过程之间的分子组成存在较大差异，这可能是由于较高的流速和需氧细菌降解的延迟所致。尽管IFAS反应器中的流速比活性污泥高出两倍（0.263 m〜3 s〜（-1）），但到处理结束时，两个过程的EfOM组成仍无法区分。但是，在这两个过程中都产生了更为复杂的EfOM，这表明细菌是导致流出物中分子多样性增加的原因。

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  • 来源
    《Environmental Science & Technology》 |2013年第18期|10277-10284|共8页
  • 作者

    Linda Y. Tseng; Michael Gonsior; Philippe Schmitt-Kopplin; William J. Cooper; Paul Pitt; Diego Rosso;

  • 作者单位

    Department of Civil and Environmental Engineering, University of California, Los Angeles, California 90095-1593, United States;

    University of Maryland Center for Environmental Science, Chesapeake Biological Laboratory, Solomons, Maryland20688, United States;

    Helmholtz Zentrum Munich, German Research Center for Environmental Health, D-85764 Neuherberg, Germany,Chair of analytical Food Chemistry, Technische Universitaet Muenchen, D-85354 Freising-Weihenstephan, Germany;

    Department of Civil and Environmental Engineering, University of California, Irvine, California 92697-2175, United States,University of California, Urban Water Research Center, Irvine, California 92697-2175, United States;

    Hazen and Sawyer, P.C., 498 Seventh Avenue, New York, New York 10018, United States;

    Department of Civil and Environmental Engineering, University of California, Irvine, California 92697-2175, United States,University of California, Urban Water Research Center, Irvine, California 92697-2175, United States;

  • 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);
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