Petrochemical industrial effluent contains industrial wastewater from various manufacturing processes. The mixed treatment of these different petrochemical wastewater effluents may influence the organic removal performance of the anaerobic processes. In this study, three typical petrochemical effluents, including polyester (PE), polyethylene terephthalate, and purified terephthalic acid wastewater, were collected. The effect of the mixed petrochemical wastewater on the organic removal and microbial community structure was investigated in the anaerobic batch assays via spectroscopy and high-throughput sequencing. The organic removal efficiencies were similar (71-85%) in all the batch assays for 90 h acclimation. The mixture of wastewater, especially the addition of PE wastewater, significantly prolonged organic removal process. It was related to the aromatic removal performance and microbial community structure during the mixed wastewater treatment. The microbial community structure in the mixed wastewater batch assay showed high similarity with that in the PE wastewater batch assay. Ignavibacterium, Syntrophus, and Pelotomaculum were crucial to the degradation of aromatic compounds together with Methanosaeta. The mixture of wastewater, especially the addition of PE wastewater, caused the decay of these functional microbes and resulted in the inefficient removal of the aromatic compounds.

中文翻译：

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不同废水来源的混合石化废水对厌氧处理的影响：有机去除行为和微生物群落。

石化工业废水包含来自各种制造过程的工业废水。这些不同的石油化工废水的混合处理可能会影响厌氧过程的有机去除性能。在这项研究中，收集了三种典型的石化废水，包括聚酯（PE），聚对苯二甲酸乙二酯和纯对苯二甲酸废水。通过厌氧分批测定，通过光谱和高通量测序，研究了混合石化废水对有机物去除和微生物群落结构的影响。在所有适应90 h的批次分析中，有机去除效率均相似（71-85％）。废水的混合物，尤其是PE废水的添加，显着延长了有机去除过程。它与混合废水处理过程中的芳香去除性能和微生物群落结构有关。混合废水分批测定中的微生物群落结构与PE废水分批测定中的微生物群落结构显示出高度相似性。隐孢子虫，棘皮动物和Pelotomaculum对芳香化合物与甲烷菌一起降解至关重要。废水的混合物，尤其是PE废水的添加，导致这些功能性微生物的腐烂，并导致芳香化合物的去除效率低下。和Pelotomaculum对与Methanosaeta一起降解芳族化合物至关重要。废水的混合物，尤其是PE废水的添加，导致这些功能性微生物的腐烂，并导致芳香化合物的去除效率低下。和Pelotomaculum对与Methanosaeta一起降解芳族化合物至关重要。废水的混合物，尤其是PE废水的添加，导致这些功能性微生物的腐烂，并导致芳香化合物的去除效率低下。