Wang Rui, You Hong, Li Zhipeng, Xie Binghan, Qi Shaojie, Zhu Jing, Qin Qiqing, Wang Han, Sun Jinxu, Ding Yi, Jia Yuhong, Liu Feng
State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China.
State Key Laboratory of Urban Water Resource and Environment, School of Environment, Harbin Institute of Technology, Harbin 150090, China; School of Marine Science and Technology, Harbin Institute of Technology at Weihai, Weihai 264209, China.
Bioresour Technol. 2023 May;376:128917. doi: 10.1016/j.biortech.2023.128917. Epub 2023 Mar 18.
A novel electric field membrane bioreactor (EMBR) for mariculture wastewater treatment utilizing reduced graphene oxide/polypyrrole ceramic membrane (rGO/PPy CM) was constructed and compared with MBRs using CM support and rGO/PPy CM. EMBR (rGO/PPy) obtained the highest pollutant removal rates (84.99% for TOC, 85.98% for NH-N), the lowest average membrane fouling rate (2.42 kPa/d) and pollutant adhesion performance by characterization. Meanwhile, the specific fluxes of characteristic foulants in EMBR were enhanced, and the total resistances were reduced by 8.12% to 62.46%. The underlying mechanisms included reduced attraction energy and improved electrostatic repulsion between contaminants in EMBR and membrane by the extended Derjaguin-Landau-Verwey-Overbeek (XDLVO) theory, DLVO model and force analysis. Therefore, this study complemented the understanding of antifouling effect and mechanism in EMBR by interaction energy and force analysis of characteristic pollutants. These findings also provided new insights into the application of EMBR for mariculture wastewater treatment.
构建了一种用于海水养殖废水处理的新型电场膜生物反应器（EMBR），该反应器使用还原氧化石墨烯/聚吡咯陶瓷膜（rGO/PPy CM），并与使用陶瓷膜载体（CM）和rGO/PPy CM的膜生物反应器（MBR）进行了比较。通过表征发现，EMBR（rGO/PPy）具有最高的污染物去除率（总有机碳（TOC）去除率为84.99%，氨氮（NH-N）去除率为85.98%）、最低的平均膜污染速率（2.42 kPa/d）和污染物附着性能。同时，EMBR中特征性污染物的比通量得到提高，总阻力降低了8.12%至62.46%。其潜在机制包括通过扩展的Derjaguin-Landau-Verwey-Overbeek（XDLVO）理论、DLVO模型和力分析，降低了EMBR中污染物与膜之间的吸引力能量，并改善了静电排斥力。因此，本研究通过对特征污染物的相互作用能和力分析，补充了对EMBR中抗污染效果和机制的理解。这些发现也为EMBR在海水养殖废水处理中的应用提供了新的见解。
