摘要
为了降低浓差极化和膜污染,剪切强化膜分离技术成为当前膜技术方面的研究热点。剪切强化膜分离技术主要包括旋转管式剪切膜分离技术、旋转盘式剪切膜分离技术和振动剪切膜分离技术。旋转管式和旋转盘式剪切膜分离技术都是通过旋转使膜表面产生剪切力来减少膜表面的污染物。振动剪切膜分离是通过扭转弹簧将偏心块产生的振动传递到过滤膜盘,振动产生的剪切力使污染物不易沉积。旋转管式和旋转盘式剪切膜分离技术因设备旋转耗能较大,从而限制了其实际应用的广泛性。振动剪切膜分离技术能耗较低,且可以浓缩浓度较高的液体,但其核心技术被垄断而限制了推广。因此,振动剪切膜分离技术的研究和设备的开发将是未来研究的重点。
In order to reduce the polarization and membrane fouling, shear-enhanced process has been focused on. The shear-enhanced process contains rotary tubular shear membrane, rotary disk shear membrane and vibratory shear- enhanced process. Rotary tubular shear membrane and rotary disk shear membrane reduces the fouling by the shearing force of the rotation of the membrane. Vibratory shear-enhanced process makes the fouling not easy to deposit by the shearing force generated from the vibration of eccentric block. Rotary tubular and rotary disk shear membranes are limited because of the energy consumption. Vibratory shear-enhanced process has more application due to the low energy consumption and getting high concentration of the liquid. But, its promotion is difficult because of the monopoly of its core technology. Therefore, the study of vibratory shear-enhanced process and the development of equipment will become the emphases in the future.
出处
《现代化工》
CAS
CSCD
北大核心
2014年第11期41-45,47,共6页
Modern Chemical Industry
基金
北京市属高校青年拔尖人才培育计划(CIT&TCD201304098)
北京市属高等学校人才强教深化计划(PHR201107213)
北京市优秀人才培养资助项目(2012D005005000002)
北京市教委科技计划面上项目(2014003)
大学生
研究生URT项目资助(2014J00050
14033921005)
关键词
剪切技术
旋转管式膜
旋转盘式膜
振动剪切膜
shearing technology
rotary tubular shear membrane
rotary disk shear membrane
vibratory shear- enhanced process
