一体式厌氧流化床膜生物反应器处理苯并噻唑废水时古菌和细菌群落对水力停留时间变化的响应动态

Dynamics of Archaeal and Bacterial Communities in Response to Variations of Hydraulic Retention Time in an Integrated Anaerobic Fluidized-Bed Membrane Bioreactor Treating Benzothiazole Wastewater.

作者信息

Li Yue, Hu Qi, Gao Da-Wen

机构信息

State Key Laboratory of Urban Water Resource and Environment, Harbin Institute of Technology, Harbin 150090, China.

School of Pharmaceutical Engineering, Shenyang Pharmaceutical University, Shenyang, Liaoning Province 110016, China.

出版信息

Archaea. 2018 Apr 29;2018:9210534. doi: 10.1155/2018/9210534. eCollection 2018.

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 m CH/kg·COD to 0.316 m CH/kg·COD) 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 despite of HRTs. The proportions of were 80.6% (HRT 24), 91.9% (HRT 18), and 91.2% (HRT 12). The dominant bacterial genera were in proportions of 23.9% (HRT 24), 16.4% (HRT 18), and 15.3% (HRT 12), respectively.

研究了一种集成式厌氧流化床膜生物反应器（IAFMBR），用于在水力停留时间（HRT）分别为24、18和12小时的条件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%降至90.9%）、甲烷百分比（从70.9%降至69.27%）和甲烷产量（从0.309 m³CH₄/kg·COD增至0.316 m³CH₄/kg·COD）不受HRT降低的影响。然而，这对膜污染有不利影响（使服务期从5.3天降至3.2天）以及苯并噻唑去除效率（将其从97.5%降至82.3%）。使用Illumina® MiSeq平台对在第185天、第240天和第297天采集的三个污泥样本进行了分析。令人惊讶的是，尽管HRT不同，但古菌的优势属始终是。其比例分别为80.6%（HRT 24）、91.9%（HRT 18）和91.2%（HRT 12）。优势细菌属分别是，比例分别为23.9%（HRT 24）、16.4%（HRT 18）和15.3%（HRT 12）。