等剪切振动膜过滤浓缩微藻过程中对膜污染的影响
Effect of the uniform shearing vibration membrane filtration on the membrane fouling in the concentration of microalgae
邵壮 1侯文鑫 1刘佳盈 1刘长青 1赵方超1
作者信息
- 1. 青岛理工大学 环境与市政工程学院,青岛 266525
- 折叠
摘要
等剪切振动膜技术是一种新型的膜过滤技术,通过产生强烈且恒定的剪切力有效地减轻膜污染.使用该技术分别进行了回流和浓缩过滤微藻实验,通过对跨膜压差(TMP)、膜形貌变化以及膜上胞外有机物(EOM)组分的分析,探究等剪切振动膜在小球藻浓缩过程中的抗污染能力.结果表明,等剪切振动膜在微藻浓缩实验中受到了较为严重的污染,主要是由于在浓缩过程中藻液浓度不断升高,造成了较高的可逆污染(72.24%),但在冲洗后膜通量可以得到有效恢复,纯水通量由329.8 L/(m2·h)恢复至2400.5 L/(m2·h).综合考虑,采用等剪切振动膜进行微藻过滤浓缩是可行的.
Abstract
Uniform shearing vibration membrane technology is a new type of membrane fil-tration technology,which can generate strong and constant shear force to effectively reduce membrane pollution.In this study,the experiment of the reflux of microalgae filtration and the experiment of the concentration of microalgae filtration were carried out respectively.By analyzing the transmembrane pressure(TMP),changes in membrane morphology and the extracellular organic matter(EOM)components on the membrane,the anti-pollution ability of uniform shearing vibration membrane during the concentration of microalgae harvesting was explored.The results showed that the uniform shearing vibration membrane was seri-ously fouled during the concentration of microalgae harvesting,and the major cause was the continuous increase of microalgae concentration which resulted in a high level of reversible fouling(75.24%),but after rinsing the membrane flux was effectively recovered from 329.8 L/(m2·h)to 2400.5 L/(m2·h).Overall,it is feasible to concentrate microalgae by uni-form shearing vibration membrane.
关键词
等剪切振动膜/膜过滤/膜污染/微藻回收/微藻浓缩Key words
uniform shearing vibration membrane/membrane filtration/membrane fouling/microalgae harvesting/concentration of microalgae引用本文复制引用
基金项目
国家重点研发计划(2020YFD1100303)
出版年
2024
NETL
NSTL
万方数据