In this study, fluidization of granular activated carbon (GAC) by the recirculation of a bulk suspension through an anaerobic fluidized bed membrane bioreactor (AFMBR) and biogas sparging from the bottom of an anaerobic membrane bioreactor (G-AnMBR) for treating low-strength wastewater were compared to investigate organic removal and fouling rate. The chemical oxygen demand (COD) removal efficiency obtained by both the AFMBR and G-AnMBR exceeded 90 %, and the proportion of methane in the biogas produced was 60 % at the same hydraulic retention time (HRT). In the AFMBR, the transmembrane pressure (TMP) gradually increased, but a rapid TMP jump was not observed during operational period. In the G-AnMBR, the TMP increased rapidly as the biogas flowrate was 2 and 3 L/min (LPM) at 8 h of HRT while the TMP below 0.1 bar was maintained over 90 d at 4 LPM. Our results also indicated that organic micropollutants, such as Bisphenol A (BPA), Sulfamethoxazole (SMX), and Methylparaben (MeP), were removed by AFMBR almost completely. However, the G-AnMBR showed relatively low SMX and MeP removal efficiencies of 47.6 % and 74.9 %, respectively. The estimated energy required to operate the G-AnMBR was 1.37 kW h/m³, while it was only 0.06 kW h/m³ for AFMBR.

在这项研究中，颗粒活性炭 (GAC) 通过大量悬浮液通过厌氧流化床膜生物反应器 (AFMBR) 的再循环和从厌氧膜生物反应器 (G-AnMBR) 底部喷射的沼气进行流化，以处理低强度比较废水以研究有机物去除率和污染率。AFMBR 和 G-AnMBR 获得的化学需氧量 (COD) 去除效率均超过 90%，在相同的水力停留时间 (HRT) 下，产生的沼气中甲烷的比例为 60%。在 AFMBR 中，跨膜压 (TMP) 逐渐增加，但在操作期间未观察到 TMP 的快速跳跃。在 G-AnMBR 中，随着沼气流速在 HRT 8 小时时分别为 2 和 3 L/min (LPM)，TMP 迅速增加，而在 4 LPM 时将 TMP 保持在 0.1 bar 以下超过 90 天。AFMBR 几乎完全去除了双酚 A (BPA)、磺胺甲恶唑(SMX) 和对羟基苯甲酸甲酯(MeP)。然而，G-AnMBR 的 SMX 和 MeP 去除效率相对较低，分别为 47.6% 和 74.9%。运行 G-AnMBR 所需的估计能量为 1.37 kW h/m ³，而AFMBR仅为 0.06 kW h/m ³。