Biodegradation time series characteristics and metabolic fate of different aromatic compounds in the biochemical treatment process of coal chemical wastewater.
Biodegradation time series characteristics and metabolic fate of different aromatic compounds in the biochemical treatment process of coal chemical wastewater.
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DOI：
10.1016/j.biortech.2022.127688
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发表时间：
2022-07
影响因子：
11.4
通讯作者：
Lu Yang;Yongjun Liu;Chen Li-;Zhe Liu;Xingshe Liu;Chunxiao Wei;Zhuangzhuang Yang;Aining Zhang
中科院分区：
文献类型：
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作者：
Lu Yang;Yongjun Liu;Chen Li-;Zhe Liu;Xingshe Liu;Chunxiao Wei;Zhuangzhuang Yang;Aining Zhang
本研究以煤化工废水为研究对象，构建了煤化工废水生化处理系统。检测了8种苯系物、6种酚类、10种多环芳烃和3种氮杂环化合物的生物降解时间序列特征。目的是阐明这些芳香族化合物在水、EPS和细胞中的储存特性和动态转化。结果表明，苯系物和NHCs比多环芳烃和酚类更易降解。此外，芳香族化合物最初被微生物吸附到EPS中。然后，一些被降解，另一些被转移到细胞中。最后，它们被彻底降解。在EPS和细胞中剩余量的百分比为PAHs >酚类> NHCs = BTEX。该研究可为生化处理系统稳定运行中CCW的调控和无害化处理奠定理论基础。
In this study, the biochemical treatment system of coal chemical wastewater (CCW) was constructed to degrade aromatic compounds. The biodegradation time series characteristics of 8 benzene series (BTEX), 6 phenols, 10 polycyclic aromatic hydrocarbons (PAHs), and 3 nitrogen heterocyclic compounds (NHCs) were detected. The aim was to clarify the storage characteristics and dynamic transformation in water, EPS, and cells of these aromatic compounds. The results showed that BTEX and NHCs were more easily degraded than PAHs and phenols. Furthermore, aromatic compounds were initially adsorbed into EPS from water by microorganisms. Then, some were degraded, and others were transferred into the cell. Finally, they were completely degraded. The percentage of surplus content with them in EPS and cells were PAHs > phenols > NHCs = BTEX. The study could lay a theoretical foundation for the regulation and harmless treatment of the CCW in the stable operation of the biochemical treatment system.