State Key Laboratory of Pollution Control and Resource Reuse, Shanghai Institute of Pollution Control and Ecological Security, School of Environmental Science and Engineering, Tongji University, 1239 Siping Road, Shanghai 200092, China.
Putuo District Center for Disease Control and Prevention, Shanghai 200092, China.
Bioresour Technol. 2020 Sep;311:123579. doi: 10.1016/j.biortech.2020.123579. Epub 2020 May 24.
A novel electrochemical membrane bioreactor (EMBR) was developed for enhancing PPCPs removal from real municipal wastewater. Compared to the control MBR (CMBR) without applying electric field, EMBR exhibited higher removal efficiencies for 14 PPCPs among all investigated PPCPs, including 3 fluoroquinolones, 2 macrolides, 6 sulfonamides and 3 anti-inflammatory drugs, while no significant difference was observed for the rest 8 PPCPs. The enhanced removal of 14 PPCPs was mainly attributed to electrooxidation by the direct anodic oxidation and reactive oxygen species-mediated indirect oxidation. Moreover, membrane fouling rates of EMBR (0.55 ± 0.10 kPa/d) were significantly reduced compared with CMBR (0.99 ± 0.09 kPa/d). Microbial activities and community analyses demonstrated that the applied electric field had no noticeable adverse impact on microbial viabilities, richness and diversity. These findings demonstrated that this EMBR enhanced pollutant removal and mitigated membrane fouling simultaneously, highlighting the potential of the novel technology to be used for removing PPCPs from wastewater.
一种新型电化学膜生物反应器（EMBR）被开发用于增强从实际市政废水中去除 PPCPs。与未施加电场的对照膜生物反应器（CMBR）相比，EMBR 对所有研究的 PPCPs 中的 14 种 PPCPs 表现出更高的去除效率，包括 3 种氟喹诺酮类、2 种大环内酯类、6 种磺胺类和 3 种抗炎药，而其余 8 种 PPCPs 的去除效率没有显著差异。14 种 PPCPs 的去除效率提高主要归因于直接阳极氧化和活性氧介导的间接氧化的电氧化作用。此外，与 CMBR（0.99 ± 0.09 kPa/d）相比，EMBR 的膜污染速率（0.55 ± 0.10 kPa/d）显著降低。微生物活性和群落分析表明，施加的电场对微生物的活力、丰富度和多样性没有明显的不利影响。这些发现表明，这种 EMBR 可以同时增强污染物的去除和减轻膜污染，突出了该新型技术用于去除废水中 PPCPs 的潜力。
