State Key Laboratory of Separation Membranes and Membrane Processes, Tianjin Polytechnic University, Tianjin 300387, China; School of Environmental and Chemical Engineering, Tianjin Polytechnic University, Tianjin 300387, China.
CNOOC Tianjin Chemical Research and Design Institute, Tianjin 300387, China.
Sci Total Environ. 2019 Mar 25;658:1219-1227. doi: 10.1016/j.scitotenv.2018.12.121. Epub 2018 Dec 11.
This study compared the performance of two different gas-permeable membranes, PVDF and PP membrane, in a membrane-aerated biofilm reactor (MABR). The surface characteristics and membrane pore blocking of these two membrane materials were studied utilizing AFM, SEM and CLSM. The PVDF membrane surface was more rough and hydrophilic, and possessed a better microbial affinity compared to PP. Furthermore, the MABR equipped with a PVDF membrane removed more COD (97.06 ± 0.97%) and TN (85.66 ± 0.87%) compared to the MABR with PP membrane (87.13 ± 0.87% and 71.13 ± 0.71%, respectively). As well, the PP membrane exhibited severe membrane pore blocking and had a lower oxygen transfer rate than the PVDF membrane. It is concluded that the PVDF membrane has potential as an aeration membrane material for MABRs.
本研究比较了两种不同的透气膜，聚偏氟乙烯（PVDF）膜和聚丙烯（PP）膜，在膜曝气生物膜反应器（MABR）中的性能。利用原子力显微镜（AFM）、扫描电子显微镜（SEM）和共聚焦激光扫描显微镜（CLSM）研究了这两种膜材料的表面特性和膜孔堵塞情况。与 PP 相比，PVDF 膜表面更粗糙、更亲水，具有更好的微生物亲和性。此外，与配备 PP 膜的 MABR 相比，配备 PVDF 膜的 MABR 去除更多的 COD（97.06±0.97%）和 TN（85.66±0.87%）（分别为 87.13±0.87%和 71.13±0.71%）。此外，PP 膜表现出严重的膜孔堵塞，其氧传递速率低于 PVDF 膜。因此，PVDF 膜作为 MABR 的曝气膜材料具有潜力。
