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首页> 外文期刊>Environmental Technology >A new route of bioaugmentation by allochthonous and autochthonous through biofilm bacteria for soluble chemical oxygen demand removal of old leachate
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A new route of bioaugmentation by allochthonous and autochthonous through biofilm bacteria for soluble chemical oxygen demand removal of old leachate

机译：通过生物膜细菌进行异源和自生生物增强的新途径，用于去除旧渗滤液中的可溶性化学需氧量

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摘要

Landfill leachate contains environmental pollutants that are generally resistant to biodegradation. In this study, indigenous and exogenous bacteria in leachate were acclimated in both biofilm and suspension forms to increase the removal of soluble chemical oxygen demand (SCOD). The bacteria from the leachate and sewage were acclimated to gradually increasing leachate concentration prepared using a reverse osmosis membrane over 28 days. The SCOD removal was measured aerobically or nominally anaerobically. Biofilms were prepared using different carrier media (glass, rubber, and plastic). The maximum SCOD removal in suspensions was 32% (anaerobic) and in biofilms was 39% (aerobic). In the suspension form, SCOD removal using acclimated bacteria from leachate and sewage anaerobically increased in comparison with the control (P<.05). In the biofilm form, the aerobic condition and the use of acclimated bacteria from leachate and sewage increased the removal efficiency of SCOD in comparison with other biofilm groups (P<.05). Three species of bacteria, including Bacillus cereus, Bacillus subtilis, and Pseudomonas aeruginosa were identified in the biofilm from leachate and sewage. Bioaugmentation technology using biofilms and acclimations can be an effective, inexpensive, and simple way to decrease SCOD in old landfill leachate.
机译：垃圾填埋场渗滤液中含有通常可抗生物降解的环境污染物。在这项研究中，渗滤液中的本地细菌和外源细菌都以生物膜和悬浮液形式适应环境，以增加对可溶性化学需氧量（SCOD）的去除。使来自渗滤液和污水的细菌适应28天后，逐渐增加使用反渗透膜制备的渗滤液的浓度。有氧或名义上无氧地测量了SCOD的去除。使用不同的载体介质（玻璃，橡胶和塑料）制备生物膜。悬浮液中最大的SCOD去除率为32％（厌氧），生物膜的最大SCOD去除率为39％（需氧）。在悬浮液形式中，与对照相比，使用驯化的细菌从渗滤液和污水中厌氧菌去除率提高了（P <.05）。与其他生物膜组相比，在生物膜形式下，好氧条件和渗滤液和污水中驯化细菌的使用提高了SCOD的去除效率（P <0.05）。在渗滤液和污水中的生物膜中鉴定出三种细菌，包括蜡状芽孢杆菌，枯草芽孢杆菌和铜绿假单胞菌。使用生物膜和驯化技术进行生物强化技术可以有效，廉价且简单地减少旧垃圾渗滤液中的SCOD。

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  • 来源
    《Environmental Technology》 |2017年第20期|2447-2455|共9页
  • 作者

    Ardeshir Rashid Alijani; Rastgar Sara; Peyravi Majid; Jahanshahi Mohsen; Rad Ali Shokuhi;

  • 作者单位

    Khorramshahr Univ Marine Sci & Technol, Fac Marine Sci, Dept Marine Biol, Khorramshahr, Iran;

    Khorramshahr Univ Marine Sci & Technol, Fac Marine Sci, Dept Marine Biol, Khorramshahr, Iran;

    Babol Noshirvani Univ Technol, Nanotechnol Res Inst, Nanoenvironm Res Grp, Babol Sar, Iran;

    Babol Noshirvani Univ Technol, Nanotechnol Res Inst, Nanoenvironm Res Grp, Babol Sar, Iran;

    Islamic Azad Univ, Qaemshahr Branch, Dept Chem Engn, Qaemshahr, Iran;

  • 收录信息 美国《科学引文索引》(SCI);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

    Bioaugmentation; biofilms; leachate; soluble chemical oxygen demand; acclimation;

    机译：生物强化;生物膜;渗滤液;可溶性化学需氧量;驯化;

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