摘要
通过测定颗粒悬浮液通过陶瓷微滤膜时的渗透通量及污染阻力，确定了陶瓷膜处理微米级颗粒悬浮液时，颗粒粒径和膜孔径对微滤过程的影响和膜污染机理，获得了微米级颗粒悬浮液微滤过程中膜孔径的选择方法。
In order to obtain the selection method of membrane pore size and fouling mechanism in suspension filtration, ceramic membranes of different properties were used to filter aqueous suspensions carrying fine particles of known size and chemical composition. By changing the membrane pore size,structure and particle size in a system manner and calculating the filtration resistances, the importance of the particle size/membrane pore size ratio to membrane flux and fouling mechanism was illustrated.When dp /dm is less than 2.4, membrane fouling was produced by pore plugging and particle bridging; when dp/dm is larger than 2.4, the fouling was produced by cake layer deposited on membranes. A selection criteria of ceramic membrane pore size for fine particles microfiltration was also obtained. The membrane pore size should fall in the range of dp/dm larger than 2.4 and less than 10 when filtered suspensions with fine particles of known size.
出处
《高校化学工程学报》
EI
CAS
CSCD
北大核心
2000年第3期230-234,共5页
Journal of Chemical Engineering of Chinese Universities
基金
国家"九五"科技攻关项目!96-A13-02-01
关键词
陶瓷微滤膜
微米级颗粒
微滤
颗粒粒径
膜孔径
ceramic microfiltration membrane
micro-sized particles
fouling mechanism
particle size/membrane pore size
