A novel combined bioreactor integrating anaerobic baffling and anaerobic filtration process was developed and operated for 210 days to treat low-strength rural wastewater. The effects of hydraulic residence time (HRT) and organic loading rate (OLR) on chemical oxygen demand (COD) removal and methane (CH4) production of the combined bioreactor were investigated. The combined bioreactor can start up successfully in 25 days and achieve enhanced performance. The COD removal rate and CH4 yield were influenced significantly by HRT and OLR. The influent COD was removed effectively through the synergistic effects of the anaerobic baffling and anaerobic filtration. The baffle zone played the main role in the degradation of the pollutants, and the filter zone mainly contributed to improve the resistance to shock loading. High-throughput sequencing technology was used to analyze the bacterial and archaeal community structure and diversity. Clostridium_sensu_stricto, Longilinea, Acetoanaerobium, Arcobacter, and Acinetobacter were found to be the dominant bacteria. While Methanothrix and Methanoregula were the dominant archaea, which were responsible for methane generation. This study not only highlights the good energy recovery and resource utilization potential of the combined bioreactor but also presents significant guidance for the application of the combined anaerobic process for low-strength rural wastewater treatment.

中文翻译：

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新型厌氧生物反应器结合厌氧折流板和厌氧滤池工艺处理低强度农村污水的性能和微生物群落。

开发了一种结合厌氧折流和厌氧过滤工艺的新型组合生物反应器，并运行了210天以处理低强度的农村废水。研究了水力停留时间（HRT）和有机负荷率（OLR）对组合生物反应器中化学需氧量（COD）去除和甲烷（CH4）产生的影响。组合的生物反应器可以在25天内成功启动，并获得增强的性能。HRT和OLR对COD去除率和CH4产量有显着影响。通过厌氧折流板和厌氧滤池的协同作用，有效去除了进水COD。挡板区在污染物的降解中起主要作用，而过滤区则主要有助于提高抗冲击负荷能力。高通量测序技术用于分析细菌和古细菌的群落结构和多样性。发现梭状芽胞杆菌，Longilinea，醋杆菌，杆菌和不动杆菌是优势细菌。甲烷菌和甲烷甲虫是主要的古细菌，它们负责甲烷的产生。这项研究不仅突出了组合生物反应器良好的能量回收和资源利用潜力，而且为组合厌氧工艺在低强度农村污水处理中的应用提供了重要指导。甲烷菌和甲烷甲虫是主要的古细菌，它们负责甲烷的产生。这项研究不仅突出了组合生物反应器良好的能量回收和资源利用潜力，而且为组合厌氧工艺在低强度农村污水处理中的应用提供了重要指导。甲烷菌和甲烷甲虫是主要的古细菌，它们负责甲烷的产生。这项研究不仅突出了组合生物反应器良好的能量回收和资源利用潜力，而且为组合厌氧工艺在低强度农村污水处理中的应用提供了重要指导。