CAJ | 학술논문

往复旋转管式陶瓷膜过滤系统通过膜组件往复旋转在膜表面反复产生高剪切率，达到减缓膜污染的效果。在相同操作条件下，与单向旋转过滤和死端过滤相比较，往复旋转过滤具有更好的减缓膜污染的作用。本实验利用往复旋转膜过滤装置超滤脱脂奶水溶液，考察了各种参数对该膜系统过滤特性的影响。实验结果表明，料液浓度增大，膜通量减小；过高的操作压差将会抑制膜通量增加；旋转速度增大，膜表面剪切强化作用增强，膜通量相应增大；膜稳态通量随往复旋转周期增大呈现先增大后减小的趋势。当料液速度达到膜组件转速时，瞬时反方向旋转膜组件，膜表面产生最大的剪切率，膜稳态通量也达到最大值。能耗分析表明，往复旋转过滤较单向旋转过滤单位通量能耗低。
왕복선전관식도자막과려계통통과막조건왕복선전재막표면반복산생고전절솔，체도감완막오염적효과。재상동조작조건하，여단향선전과려화사단과려상비교，왕복선전과려구유경호적감완막오염적작용。본실험이용왕복선전막과려장치초려탈지내수용액，고찰료각충삼수대해막계통과려특성적영향。실험결과표명，료액농도증대，막통량감소；과고적조작압차장회억제막통량증가；선전속도증대，막표면전절강화작용증강，막통량상응증대；막은태통량수왕복선전주기증대정현선증대후감소적추세。당료액속도체도막조건전속시，순시반방향선전막조건，막표면산생최대적전절솔，막은태통량야체도최대치。능모분석표명，왕복선전과려교단향선전과려단위통량능모저。
The reciprocating rotary tubular ceramic membrane filtration system could create high shear rate at the membrane surface repeatedly by rotating membrane module in a reciprocating motion to reduce membrane fouling. Compared with the unidirectional rotating filtration and dead-end filtration under the same conditions,the reciprocating rotary filtration system showed superiority in reducing membrane fouling. This research designed ultrafiltration skim milk solution tests to investigate the influence of operating parameters. The results revealed that feed concentration increase could lead to the decrease of membrane permeate flux,and membrane flux could be reduced once the TMP was too high. The increase of rotating speed could induce the increase of shear enhancement and the membrane permeate flux. As the reciprocating rotating cycle increased,the quasi steady membrane permeate flux firstly increases before it decreased. When the feed fluid velocity was at the membrane module velocity,the membrane module being rotated in opposite direction instantaneously generated the largest shear rate on the membrane surface and gained the largest permeate flux. The specific energy consumption per m3 permeate of the reciprocating rotary filtration system was lower than the unidirectional rotating filtration.