扇形过流通道多孔陶瓷膜的过滤性能研究

Filtration Performance of Porous Ceramic Membrane with Fan-shaped Flow Channel

提出了一种新的多孔陶瓷膜水流组织方式,将常规多孔陶瓷膜过滤时水流从过流通道向外侧单向渗透的方式改变为双向渗透;分析了多孔陶瓷膜有效过滤面积计算方法的不足,并提出了一种新的计算方法;进行了扇形过流通道多孔陶瓷膜对纯水和池塘水的过滤试验,结果表明,扇形过流通道多孔陶瓷膜的有效过滤面积为同规格圆形过流通道多孔陶瓷膜的1.3倍,过滤通量是圆形过流通道多孔陶瓷膜的1.45倍,但两者对池塘水的净化效果基本相当。

A new water flow pattern in porous ceramic membrane was proposed. The infiltration direction of water flow from the flow channel to the outside of the conventional porous ceramic membrane was changed from unidirectional to bidirectional. The deficiency of the existing computation method for calculating effective filtering area of porous ceramic membrane was analyzed, and a new computation method was proposed. Tests were carried out on the filtration of pure water and pond water using porous ceramic membrane with fan-shaped flow channel. The results showed that the effective filtering area of the porous ceramic membrane with fan-shaped flow channel was 1.3 times that of the porous ceramic mem- brane with circular flow channel. The filtration flux of flow channel porous ceramic membrane was 1.45 times that of the porous ceramic membrane with circular flow channel. However, the purification effect of pond water was the same in both kinds of membranes.