Anaerobic ceramic membrane bioreactor (AnCMBR) is an attractive alternative for the treatment of high-strength phenol wastewater, but the effects of sludge retention time (SRT) on the performance and membrane fouling are still unclear. The results indicated that the AnCMBR was successfully employed to treat high-strength wastewater containing 5 g phenol L^-1. The removal efficiencies of phenol and chemical oxygen demand (COD) reached over 99.5% and 99%, respectively, with long SRT and short SRT. SRT had no obvious effect on the performance of the AnCMBR treating high-strength phenol wastewater with long time operation. The strong performance robustness of AnCMBR benefited from the enrichment of hydrogenotrophic methanogens and syntrophic phenol-degrading bacteria. However, the decline of SRT led to a more severe membrane fouling in the AnCMBR, which was caused by the small size of sludge flocs and high concentration of protein in the biopolymers. Therefore, this work presented a comprehensive insight to the feasibility and robustness of the AnCMBR for treating high-strength phenol wastewater.

中文翻译：

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污泥停留时间对厌氧陶瓷膜生物反应器处理高浓度苯酚废水性能的影响。

厌氧陶瓷膜生物反应器（AnCMBR）是用于处理高强度苯酚废水的一种有吸引力的替代方法，但污泥保留时间（SRT）对性能和膜污染的影响尚不清楚。结果表明，AnCMBR已成功用于处理5 g酚L ^-1的高强度废水。。长SRT和短SRT时，苯酚和化学需氧量（COD）的去除率分别达到99.5％和99％以上。SRT对AnCMBR长时间运行对高浓度酚废水的处理性能没有明显影响。AnCMBR具有强大的性能鲁棒性，得益于氢营养型产甲烷菌和腐殖酚降解细菌的富集。然而，SRT的下降导致AnCMBR中更严重的膜污染，这是由于污泥絮凝物的尺寸小和生物聚合物中蛋白质的浓度高所致。因此，这项工作为AnCMBR处理高强度酚废水的可行性和耐用性提供了全面的见解。