An integrated anaerobic fluidized-bed membrane bioreactor (IAFMBR) was investigated to treat synthetic high-strength benzothiazole wastewater (50 mg/L) at a hydraulic retention time (HRT) of 24, 18, and 12 h. The chemical oxygen demand (COD) removal efficiency (from 93.6% to 90.9%), the methane percentage (from 70.9% to 69.27%), and the methane yield (from 0.309 m³ CH₄/kg·COD_removed to 0.316 m³ CH₄/kg·COD_removed) were not affected by decreasing HRTs. However, it had an adverse effect on membrane fouling (decreasing service period from 5.3 d to 3.2 d) and benzothiazole removal efficiency (reducing it from 97.5% to 82.3%). Three sludge samples that were collected on day 185, day 240, and day 297 were analyzed using an Illumina® MiSeq platform. It is striking that the dominant genus of archaea was always Methanosaeta despite of HRTs. The proportions of Methanosaeta were 80.6% (HRT 24), 91.9% (HRT 18), and 91.2% (HRT 12). The dominant bacterial genera were Clostridium in proportions of 23.9% (HRT 24), 16.4% (HRT 18), and 15.3% (HRT 12), respectively.

中文翻译：

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厌氧流化床膜生物反应器处理苯并噻唑废水的水力停留时间变化响应古细菌和细菌群落的动力学。

研究了集成厌氧流化床膜生物反应器（IAFMBR）在24、18和12 h的水力停留时间（HRT）下处理合成的高强度苯并噻唑废水（50 mg / L）。化学需氧量（COD）去除效率（从93.6％到90.9％），甲烷百分比（从70.9％到69.27％）和甲烷产率（从0.309 m ³ CH ₄ / kg·_去除的COD到0.316 m ³ CH ₄ / kg·COD_去除）不受HRT减少的影响。但是，它对膜结垢（使用寿命从5.3 d减少到3.2 d）和苯并噻唑的去除效率（从97.5％降低到82.3％）有不利影响。使用Illumina®MiSeq平台分析了在第185天，第240天和第297天收集的三个污泥样品。令人惊讶的是，尽管存在HRT ，古细菌的主要属总是Methanosaeta。甲烷菌的比例分别为80.6％（HRT 24），91.9％（HRT 18）和91.2％（HRT 12）。优势细菌属是梭菌，其比例分别为23.9％（HRT 24），16.4％（HRT 18）和15.3％（HRT 12）。