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首页> 外文期刊>Desalination and water treatment >The influence of operating conditions on the filtration behavior of actual extracellular polymeric substances (EPS) using dead-end membrane filtration cell
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The influence of operating conditions on the filtration behavior of actual extracellular polymeric substances (EPS) using dead-end membrane filtration cell

机译：操作条件对使用末端膜过滤池的实际细胞外聚合物（EPS）过滤行为的影响

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摘要

The EPS solution extracted from the activated sludge of sequencing batch reactors (SBRs) by the formaldehyde-NaOH extraction method was filtered in dead-end cell with 0.1 μm PVDF micro-filtration membrane under various operating conditions, and the filtration behaviors of actual EPS solution were investigated. The experimental results show that: firstly, the membrane filtration mechanism is governed by cake filtration, and the cake is compressible; secondly, the cake specific resistance increased with the increase of transmembrane pressure (TMP) and decreased as the concentration increased; thirdly, all operating conditions had a significant influence on the cumulative filtrate volume (CFV) of actual EPS solution; finally, the CFV increased with the rise of temperature and TMP, but decreased as EPS concentration increased. The sequence of influence degree of operating conditions is the temperature (38.1%) ＞ the TMP (34.8%) ＞ the EPS concentration (27.1%). A quantitative regression relationship between the CFV and the temperature (T), TMP (ΔP) and EPS concentration (C) was obtained as follows: CFV = - 3.7 × 10~(-8) C + 5.79 × 10~7 T + 1.27 × 10~(-4) ΔP.
机译：通过甲醛-NaOH提取法从测序间歇反应器（SBRs）的活性污泥中提取的EPS溶液在各种操作条件下用0.1μmPVDF微滤膜过滤到死池中，并过滤实际EPS溶液的行为被调查了。实验结果表明：首先，滤饼的过滤机理决定了膜的过滤机理，滤饼是可压缩的。其次，滤饼电阻率随跨膜压（TMP）的增加而增加，随浓度的增加而减小。第三，所有操作条件对实际EPS溶液的累积滤液体积（CFV）都有重要影响。最后，CFV随着温度和TMP的升高而增加，但随着EPS浓度的增加而降低。操作条件的影响程度顺序为温度（38.1％）＞ TMP（34.8％）＞ EPS浓度（27.1％）。 CFV与温度（T），TMP（ΔP）和EPS浓度（C）之间的定量回归关系如下：CFV =-3.7×10〜（-8）C + 5.79×10〜7 T + 1.27 ×10〜（-4）ΔP

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  • 来源
    《Desalination and water treatment》 |2012年第3期|52-59|共8页
  • 作者

    Mei Liu; Zhan Wang; Longyue Shi; Yin Song; Wenyue Dong; Yuenan Zhou; Jing Zhang; Liying Yang; Qian Zhang;

  • 作者单位

    Department of Chemistry and Chemical Engineering, College of Environment and Energy Engineering, Beijing University of Technology, Beijing P.R. China 100124;

    Department of Chemistry and Chemical Engineering, College of Environment and Energy Engineering, Beijing University of Technology, Beijing P.R. China 100124;

    Department of Chemistry and Chemical Engineering, College of Environment and Energy Engineering, Beijing University of Technology, Beijing P.R. China 100124;

    Department of Chemistry and Chemical Engineering, College of Environment and Energy Engineering, Beijing University of Technology, Beijing P.R. China 100124;

    Department of Chemistry and Chemical Engineering, College of Environment and Energy Engineering, Beijing University of Technology, Beijing P.R. China 100124;

    Department of Chemistry and Chemical Engineering, College of Environment and Energy Engineering, Beijing University of Technology, Beijing P.R. China 100124;

    Department of Chemistry and Chemical Engineering, College of Environment and Energy Engineering, Beijing University of Technology, Beijing P.R. China 100124;

    Department of Chemistry and Chemical Engineering, College of Environment and Energy Engineering, Beijing University of Technology, Beijing P.R. China 100124;

    Department of Chemistry and Chemical Engineering, College of Environment and Energy Engineering, Beijing University of Technology, Beijing P.R. China 100124;

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  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    Microfiltration; Dead-end; Cumulative filtrate volume; Regression method; Actual EPS solution; Influence degree;

    机译：微滤;死路;累积滤液量;回归方法;实际的EPS解决方案;影响程度;

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