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首页> 外文期刊>Journal of Hazardous Materials >The role of tannins in conventional and membrane treatment of tannery wastewater
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The role of tannins in conventional and membrane treatment of tannery wastewater

机译：单宁在制革废水常规和膜处理中的作用

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摘要

The role that tannins play in tannery wastewater treatment has been evaluated employing a pilot Membrane Bioreactor (MBR) plant and a full scale Conventional Activated Sludge Process (CASP) plant conducted in parallel. The proposed methodology has established the preliminary use of respirometry to examine the biodegradability of a selection of commercial products (synthetic and natural tannins); the subsequent analysis, by means of spectrophotometric reading and RP-IPC (Reverse-Phase Ion-Pair) liquid chromatography, estimates the concentrations of natural tannins and naphthalenesulfonic tanning agents in the influent and effluent samples. The results show that a consistent percentage of the Total Organic Carbon (TOC) in the effluent of the biological phase of the plants is attributable to the presence of natural and synthetic (Sulfonated Naphthalene-Formaldehyde Condensates, SNFC) tannins (17% and 14% respectively). The titrimetric tests that were aimed at evaluating the levels of inhibition on the nitrifying biomass samples did not allow a direct inhibiting effect to be associated with the concentration levels of the tannin in the effluent. Nonetheless, the reduced specific growth rates of ammonium and nitrite oxidising bacteria imply that a strong environmental pressure is present, if not necessarily due to the concentration of tannins, due to the wastewater as a whole. The differences that have emerged by comparing the two technologies (CASP and MBR), in regards to the role that tannins play in terms of biodegradability, did not appear to be significant.
机译：已使用中试膜生物反应器（MBR）工厂和全面开展的常规常规活性污泥工艺（CASP）工厂评估了单宁酸在制革废水处理中的作用。拟议的方法已经建立了呼吸测定法的初步用途，以检查某些商品（合成的和天然的单宁）的生物降解能力；随后的分析，通过分光光度计读数和RP-IPC（反相离子对）液相色谱法，估算了进水和出水样品中天然单宁和萘磺酸鞣剂的浓度。结果表明，植物生物相出水中总有机碳（TOC）的百分比恒定归因于天然和合成（磺化萘-甲醛缩合物，SNFC）单宁的存在（分别为17％和14％）分别）。旨在评估对硝化生物质样品的抑制水平的滴定度测试不允许直接抑制作用与废水中单宁的浓度水平相关。但是，氨和亚硝酸盐氧化细菌的比生长速率降低意味着，由于废水的整体存在，即使不是由于丹宁酸的浓度，也存在很大的环境压力。通过比较两种技术（CASP和MBR）在鞣质在生物降解性方面的作用方面出现的差异似乎并不明显。

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  • 来源
    《Journal of Hazardous Materials》 |2009年第3期|733-739|共7页
  • 作者

    G. Munz; D. De Angelis; R. Gori; G. Mori; M. Casarci; C. Lubello;

  • 作者单位

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

    ENEA (Italian National Agency for New Technologies, Energy and the Environment), C.R. Casaccia, Via Anguillarese, 301-00060 S.Maria di Galeria, Rome, Italy;

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

    Consorzio Cuoiodepur Spa, Via Arginale Ovest 8,56020, San Romano-S.Miniato, Pisa, Italy;

    ENEA (Italian National Agency for New Technologies, Energy and the Environment), C.R. Casaccia, Via Anguillarese, 301-00060 S.Maria di Galeria, Rome, Italy;

    Department of Civil and Environmental Engineering, University of Florence, Via S. Marta n.3,50139 Florence, 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);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    tannery wastewater; membrane bioreactor; natural tannins; naphthalenesulfonic tanning agents; nitrification inhibition;

    机译：制革废水;膜生物反应器天然单宁萘磺酸鞣剂;硝化抑制;

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