Evaluating backwashing efficiency of poly(vinylidene fluoride) (PVDF) membrane fouled by yeast and sodium alginate

This collection is the result of an investigation into the backwashing efficiency of poly(vinylidene fluoride) (PVDF) membrane fouled by yeast and sodium alginate. In this experiement, poly(vinylidene fluoride) (PVDF) membrane was used to filter two types of organic foulants from suspensions in a dead-end stirred cell. The organic foulants including yeast and sodium alginate were stained with fluorescent dyes before filtration. After filtration, the PC membrane was backwashed. Consequently, a stack of images were captured from the fouling layers on the PVDF membrane surface using confocal laser scanning microscope (CLSM) and its associated image acquisition software. The data collection contains image data of poly(vinylidene fluoride) (PVDF) membranes' fouling layer when two types of organic foulants (yeast and sodium alginate) are present. By comparing with the same membrane without backwashing, the efficiency of backwashing was computed. The collection would be useful to researchers evaluating the backwashing efficiency of poly(vinylidene fluoride) (PVDF) membrane in order to optimize frequency and operational conditions of backwashing by membrane materials and by water.

本数据集为针对酵母与海藻酸钠污染的聚偏氟乙烯（poly(vinylidene fluoride), PVDF）膜反冲洗效率开展的研究成果。本实验采用PVDF膜在死端搅拌池中过滤含两类有机污染物的悬浮液，实验前先将酵母与海藻酸钠这两种有机污染物用荧光染料进行染色。过滤完成后，对PVDF膜实施反冲洗操作，随后借助共聚焦激光扫描显微镜（confocal laser scanning microscope, CLSM）及其配套图像采集软件，捕获PVDF膜表面污染层的序列图像。本数据集涵盖两类有机污染物（酵母与海藻酸钠）存在时PVDF膜污染层的图像数据。通过与未进行反冲洗的同批次膜进行对照，可测算反冲洗效率。该数据集可服务于评估PVDF膜反冲洗效率的研究人员，助力其优化膜材料及水处理场景下反冲洗的频率与运行工况。