Graduate School of Science and Technology, Kumamoto University, 2-39-1 Kurokami, Chuo-ku, Kumamoto 860-8555, Japan.
City of Kitakyushu, 1-1 Jonai, Kokurakita-ku, Kitakyushu 803-8501, Japan.
Bioresour Technol. 2020 May;304:123015. doi: 10.1016/j.biortech.2020.123015. Epub 2020 Feb 20.
The relationship between fouling development in a continuous laboratory-scale membrane reactor (MBR/Lab) and the membrane material was investigated using flat-sheet membranes prepared from four materials (polyvinylidene difluoride (PVDF), polyethersulfone, chlorinated polyvinyl chloride, and polytetrafluoroethylene). Further, the characteristics of the suspension liquid in MBR/Lab were compared with those of samples from actual wastewater treatment plants. It was found that, in addition to the membrane material's own characteristics, the structural vulnerability of the membranes had a determining effect on fouling development. The PVDF membrane showed the highest transmembrane pressure during MBR operation and its surface experienced significant damage because of the shearing stress caused by aeration, resulting in the penetration of the membrane by the fouling compounds. The characteristics of suspension liquid in MBR/Lab were almost similar to those in the MBR at a night-soil treatment plant and the aeration tank of a sewage treatment plant.
采用聚偏氟乙烯（PVDF）、聚醚砜、氯化聚氯乙烯和聚四氟乙烯等四种材料制备的平板膜，研究了连续实验室规模膜生物反应器（MBR/Lab）中膜污染发展与膜材料之间的关系。此外，还比较了 MBR/Lab 悬浮液的特性与实际污水处理厂样品的特性。结果表明，除了膜材料本身的特性外，膜的结构脆弱性对污染发展有决定性的影响。在 MBR 运行过程中，PVDF 膜的跨膜压力最高，由于曝气引起的剪切应力，其表面受到严重破坏，导致污染化合物穿透膜。MBR/Lab 悬浮液的特性与粪便处理厂的 MBR 和污水处理厂曝气池的特性几乎相似。
