Abstract This research aimed to mitigate fouling in membrane bioreactors (MBR) through concurrent usage of zinc oxide as an antibacterial agent (A) and sodium alginate as a hydrophilic agent (H) within a polyacrylonitrile membrane (PM) structure. The antibacterial polymeric membranes (APM) and antibacterial hydrophilic polymeric membranes (AHPM) synthesized showed a higher porosity, mechanical strength and bacterial inhibition zone, and a lower contact angle in comparison with PM membranes. EDS, SEM and AFM analyses were used to characterize the chemical, structural, and morphological properties of PM, APM, and AHPM. The flux of PM, APM, and AHPM in MBR was 37, 48, and 51 l m−2 h−1 and COD removal was 81, 93.5, and 96.7%, respectively. After MBR operation for 35 days in an urban wastewater treatment, only 50% of the flux of PM was recovered, while the antibacterial and hydrophilic agents yielded a flux recovery of 72.7 and 100% for APM and AHPM, respectively.

中文翻译：

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氧化锌和海藻酸钠在膜生物反应器处理城市污水中的生物污染防治中的应用

摘要 本研究旨在通过在聚丙烯腈膜 (PM) 结构中同时使用氧化锌作为抗菌剂 (A) 和海藻酸钠作为亲水剂 (H) 来减轻膜生物反应器 (MBR) 的污染。与PM膜相比，合成的抗菌聚合物膜（APM）和抗菌亲水聚合物膜（AHPM）显示出更高的孔隙率、机械强度和细菌抑菌圈，以及更低的接触角。EDS、SEM 和 AFM 分析用于表征 PM、APM 和 AHPM 的化学、结构和形态特性。MBR 中 PM、APM 和 AHPM 的通量分别为 37、48 和 51 lm-2 h-1，COD 去除率分别为 81、93.5 和 96.7%。某城市污水处理MBR运行35天后，仅回收了50%的PM通量，