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首页> 外文期刊>Science of the total environment >Treatment of fresh leachate by microaeration pretreatment combined with IC-AO~2 process: Performance and mechanistic insight
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Treatment of fresh leachate by microaeration pretreatment combined with IC-AO~2 process: Performance and mechanistic insight

机译：通过微曝种预处理治疗新鲜渗滤液，结合IC-AO〜2工艺：性能与机械洞察

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摘要

Fresh leachate is commonly featured with high concentrations of degradable organic matters, which can impede the performance of traditional biological treatment, especially the anaerobic reactor. Aiming at improving the biological treatment process of fresh leachate, this study creatively proposed a microaerobic-IC-AO~2 (MAICAO~2) process and compared it with traditional biological process, then optimized the operating conditions. Meanwhile, this work investigated the transformation rules and molecular compositions of dissolved organic matters (DOM) during MAICAO~2 process, particularly the hazardous DOM (antibiotics). The innovative MAICAO~2 process can effectively remove 99% chemical oxygen demand (COD), 91% total nitrogen (TN) and 91% ammonia (NH_4~+-N) during the operation time, and the removal efficiencies of COD, TN and NH_4~+-N in MAICAO~2 process increased approximately 2%, 14% and 13% compared to ICAOAO process. Electrospray ionization Fourier transform ion cyclotron resonance mass spectrometry (ESI FT-ICR MS) confirmed that microaeration could ensure over 53% small molecular organic acids degrade before the subsequent anaerobic reaction so the system could resist the high concentration organic matters stress and improve the denitrification efficiency. Further analysis showed that different categories of antibiotics (including 6 sulfonamides, 4 tetracyclines, 2 macrolides, 4 quinolones and 2 chloramphenicols) could be effectively removed by MAICAO~2 process with the total removal efficiency of 50%. This work proposed a new scenario for fresh leachate treatment by proposing the importance of the microaeration pretreatment during the biological treatment process.
机译：新鲜渗滤液通常具有高浓度可降解的有机物，这可能妨碍传统生物处理，尤其是厌氧反应器的性能。旨在改善新鲜渗滤液的生物处理过程，这项研究创造性地提出了一种微生物-CI-AO〜2（Maicao〜2）过程，并将其与传统的生物过程进行比较，然后优化操作条件。同时，该作品研究了Maicao〜2过程中溶解有机物质（DOM）的转化规则和分子组成，特别是危险DOM（抗生素）。创新的Maicao〜2过程可以在操作时间内有效地消除99％的化学需氧量（COD），91％的总氮（TN）和91％氨（NH_4〜+ -N），以及COD，TN和的去除效率与ICAoao工艺相比，Maicao〜2过程中的NH_4〜+ -NN〜2过程增加了约2％，14％和13％。电喷雾电离傅里叶变换离子回火谐振质谱（ESI FT-ICR MS）证实，微扫可确保在随后的厌氧反应之前降解超过53％的小分子有机酸，因此该系统可以抵抗高浓度有机物质应力并提高反硝化效率。进一步的分析表明，MaicaO〜2工艺可以有效地除去不同类别的抗生素（包括6磺酰胺，4四环素，2种，4次喹啉和2种氯霉素），其总去除效率为50％。这项工作提出了一种新的场景，通过提出在生物处理过程中微疗预处理的重要性来进行新的渗滤液处理。

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  • 来源
    《Science of the total environment》 |2021年第1期|147939.1-147939.10|共10页
  • 作者

    Mengqi Wei; Ruina Zhang; Mingjian Zhou; Zhiqiang Yuan; Haiping Yuan; Nanwen Zhu;

  • 作者单位

    School of Environmental Science & Engineering Shanghai Jiao Tong University Shanghai 200240 China;

    Shanghai Institute for Design & Research on Environmental Engineering Co. Ltd Shanghai 200040 China Shanghai Environmental Sanitation Engineering Design Institute Co. Ltd Shanghai 200001 China;

    School of Environmental Science & Engineering Shanghai Jiao Tong University Shanghai 200240 China;

    School of Environmental Science & Engineering Shanghai Jiao Tong University Shanghai 200240 China;

    School of Environmental Science & Engineering Shanghai Jiao Tong University Shanghai 200240 China;

    School of Environmental Science & Engineering Shanghai Jiao Tong University Shanghai 200240 China Shanghai Engineering Research Center of Solid Waste Treatment and Resource Recovery Shanghai 200240 China;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Fresh leachate; Biological treatment; Microaeration; Molecular information; Antibiotics;

    机译：新鲜的渗滤液;生物治疗;微孔;分子信息;抗生素;

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