Abstract Due to the presence of refractory organic pollutants and toxicity compounds, the choice of the best alternative for the landfill leachate treatment becomes a challenge. In this study the integration of aerobic membrane bioreactor with nanofiltration (MBR-NF) and hybrid Fenton-microfiltration process also with nanofiltration (FMF-NF) were compared for the treatment of landfill leachate. The roles of individual process on the organic and inorganic matter removal and toxicity reduction were discussed. By analyzing the residual compounds of each individual process, the mechanism of organic matter change during these processes was qualitatively investigated. The FMF process had the best percentage of color (47 %), COD (67 %), ammonia nitrogen (37 %) and toxicity (100 %) removal compared to MBR, which demonstrated removal of 31, 22, 27 and 44 % for the same parameters, respectively. NF plays a crucial role as a polishing stage, allowing for final removal rates >99.9 % and 95 % for color, 88 % and 95 % for COD and 92 % and 80 % for ammonia (MBR-NF and FMF-NF treatment routes, respectively), producing high quality and nontoxic permeates. Furthermore, the diversity of compounds identified with different properties and toxicity patterns emphasizes the complexity of the relationships that occur in these aqueous matrices and the effects they cause.

中文翻译：

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综合 Fenton/微滤和好氧膜生物反应器与纳滤处理垃圾渗滤液的综合研究

摘要 由于难处理的有机污染物和有毒化合物的存在，垃圾渗滤液处理的最佳替代方案的选择成为一个挑战。在这项研究中，将好氧膜生物反应器与纳滤 (MBR-NF) 和混合芬顿微滤工艺与纳滤 (FMF-NF) 结合用于处理垃圾渗滤液进行了比较。讨论了个别工艺对有机物和无机物去除和毒性降低的作用。通过分析每个单独过程的残留化合物，定性地研究了这些过程中有机物变化的机制。与 MBR 相比，FMF 工艺具有最佳的颜色 (47 %)、COD (67 %)、氨氮 (37 %) 和毒性 (100 %) 去除百分比，表明去除了 31、22、对于相同的参数，分别为 27% 和 44%。NF 作为抛光阶段起着至关重要的作用，允许最终去除率 >99.9% 和 95% 的颜色，88% 和 95% 的 COD 和 92% 和 80% 的氨（MBR-NF 和 FMF-NF 处理路线，分别），生产高质量和无毒的渗透物。此外，具有不同性质和毒性模式的化合物的多样性强调了这些水性基质中发生的关系及其引起的影响的复杂性。