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首页> 外文期刊>Environmental Science & Technology >Fate of Surfactants in Membrane Bioreactors and Conventional Activated Sludge Plants
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Fate of Surfactants in Membrane Bioreactors and Conventional Activated Sludge Plants

机译：膜生物反应器和常规活性污泥厂中表面活性剂的去向

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Two membrane bioreactors (MBRs) were operated at high sludge retention time (SRT) (between 30 and 75 d) in parallel to a conventional activated sludge plant (CASP) conducted at SRT = 10 d. The fate of linear alkylbenzene sulfonate (IAS), nonylphenol ethoxylates (NP_nEO, n = 1-15), nonylphenoxy carboxylates (NP_nEC, n = 1-2), and nonylphenol (NP) in these systems was investigated. All systems were very efficient in the removal of LAS (around 99%). The analysis of variance showed that the difference in the removal efficiency of LAS in the CASP and the MBR operated at SRT = 65-75 d (respectively 99.0 ± 0.43 and 99.8 ±0.11) were significant (p < 0.051, confirming the importance of SRT in the removal of LAS. Comparison between the CASP and the MBRs in the removal efficiency of nonylphenolic compounds were conducted considering NP_(3-15)EO, the sum of NP_(1-15)EO, NP_(1-2)EC, and nonylphenol (NP). In all cases MBRs were more efficient than the CASP. In the case of NP the removal was about 76 ± 7.5% for the CASP and 90% ± 12.1 and 82 ± 8.7% for the MBRs. Better performance of MBRs in the removal of nonylphenolic compounds can be attributed to a better degradation. For example, if the sum of NP_(1-15)EO and NP_(1-2)EC is considered, estimated biodegradation was about 48% for the CASP and 72% for MBRs.
机译：两个膜生物反应器（MBR）在高污泥保留时间（SRT）（30到75 d之间）下运行，与在SRT = 10 d进行的常规活性污泥厂（CASP）并行运行。在这些系统中，研究了直链烷基苯磺酸盐（IAS），壬基酚乙氧基化物（NP_nEO，n = 1-15），壬基苯氧基羧酸盐（NP_nEC，n = 1-2）和壬基酚（NP）的命运。所有系统都非常有效地去除了LAS（约99％）。方差分析表明，在SRT = 65-75 d时CASP和MBR的LAS去除效率差异（分别为99.0±0.43和99.8±0.11）是显着的（p <0.051，证实了SRT的重要性考虑到NP_（3-15）EO，NP_（1-15）EO，NP_（1-2）EC，NP_（3-15）EO，NP_（1-2-15EC）的总和，比较了CASP和MBR在壬基酚类化合物去除效率上的比较。在所有情况下，MBR均比CASP更有效；在NP情况下，CASP的去除率约为76±7.5％，MBR的去除率约为90％±12.1和82±8.7％。去除壬基酚类化合物中的MBR可以归因于更好的降解，例如，如果考虑NP_（1-15）EO和NP_（1-2）EC的总和，则CASP和NP_（1-2）EC的估计生物降解约为48％。 MBR的72％。

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  • 来源
    《Environmental Science & Technology》 |2010年第21期|p.8223-8229|共7页
  • 作者

    RICCARDO GORI; LAURA CAMMIUI; MIRA PETROVIC; SUSANA GONZALEZ; DAMIA BARCELO; CLAUDIO LUBELLO; FRANCESCA MALPEI;

  • 作者单位

    Department of Civil and Environmental Engineering, University of Florence, via S. Marta, 3, 50139 Florence, Italy;

    rnDepartment of Civil and Environmental Engineering, University of Florence, via S. Marta, 3, 50139 Florence, Italy,Politecnico di Milano,piazza Leonardo da Vinci, 32, Milano, Italy;

    rnDepartment of Environmental Chemistry, IDAEA-CSIC, Jordi Girona 18-26, Barcelona, Spain, DIIAR,ICREA - Catalan Institute of Research and Advanced Studies, Barcelona Spain;

    rnDepartment of Environmental Chemistry, IDAEA-CSIC, Jordi Girona 18-26, Barcelona, Spain, DIIAR;

    rnDepartment of Environmental Chemistry, IDAEA-CSIC, Jordi Girona 18-26, Barcelona, Spain, DIIAR,ICRA-Catalan Institute for Water Studies, Girona, Spain;

    rnDepartment of Civil and Environmental Engineering, University of Florence, via S. Marta, 3, 50139 Florence, Italy;

    rnPolitecnico di Milano,piazza Leonardo da Vinci, 32, Milano, Italy;

  • 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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