气冲强化动态超滤处理大豆乳清液  

Pilot study on the treatment of soybean whey with air blasting enhanced vibratory ultrafiltration

作　　者：吕斯濠[1] 陈福明[1] 王晓琳[2] 李旭宁[1] 王晓玉 

机构地区：[1]深圳清华大学研究院,深圳518057 [2]清华大学化学工程系,北京100084 [3]哈尔滨宏兴水处理公司,哈尔滨150090

出　　处：《膜科学与技术》2007年第4期50-54,共5页Membrane Science and Technology

基　　金：深圳市科技三项基金资助项目(S20040101)

摘　　要：通过中试研究,考察气冲强化动态超滤处理大豆乳清液的效果和工艺参数.对于经过预处理的大豆乳清液,采用该动态超滤可以极大地延缓膜通量的衰减速率,在气冲强度5.0m3/h、压力0.05 MPa、温度45℃和pH 7.0的最优操作条件下,膜的过滤周期达到1 200 min以上,远大于死端过滤或切向流过滤时膜的过滤周期.对污染后膜的清洗表明,该组件形式有利于膜的水力冲洗和化学清洗;对蛋白质和糖类的分离效果进行监测,结果表明气冲强化动态形式不改变超滤膜对目标物质的分离特性.A pilot study was carried out to evaluate the application of air blasting enhanced vibratory ultrafiltration in the treatment of soybean whey.The results showed that the decline of membrane permeate flux was slowed down apparently compared with that of dead end or cross flow ultrafiltration.The ultrafiltration circle was as long as more than 1 200 min for the pretreated soybean whey under the optimal operating condition of 45 ℃ of temperature,7.0 of pH,0.05 MPa of transmembrane pressure and 5.0 m3/h of air blasting density.The experiments also revealed that the air blasting enhanced vibratory ultrafiltration module was advantageous for the application of water dynamic flushing and chemical cleaning to reclaim the membrane permeate flux after the fouling of membrane.The retaining ratios of protein and oligosaccharides were not changed by the operation,indicating that the separating characteristics of aimed components were not altered by the adoption of air blasting.

关 键 词：气冲强化动态超滤 大豆乳清液 膜污染 大豆蛋白质 气冲强度 膜通量 

分 类 号：TS214.2[轻工技术与工程—粮食、油脂及植物蛋白工程]