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首页> 外文期刊>Journal of industrial and engineering chemistry >Modification of a hollow fiber membrane and its three-dimensional analysis of surface pores and internal structure for a water reclamation system
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Modification of a hollow fiber membrane and its three-dimensional analysis of surface pores and internal structure for a water reclamation system

机译：中空纤维膜的改性及其表面孔隙和内部结构的三维分析

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摘要

A modified hollow fiber membrane with organic solvents was used for a membrane separation reactor to configure a water reclamation system. Changes in the surface and inner pores of the modified follow fiber membrane were analyzed three dimensionally. The results from the operation of the membrane separation reactor with MLSS of 7200 mg/1 for 120 days were compared with those from pure water. Monitoring changes in permeate flux and separation efficiency, we made an effort to predict the possibility of back wash and the breakthrough point. During the initial operation, contamination of membrane surface was increased gradually without changes in inner pores whereas a long-term operation exhibited a decrease in inner pores and a change in microfibril, suggesting that there would be a rare possibility for backwashing. As the suction pressure was raised from 1 atm to greater than 2 atm due to the increased membrane surface contamination with 40 days of operation, the permeate flux and suction pressure were required to be continuously monitored. The results of more than 100 days of operation suggested that backwashing was not possible due to fouling.
机译：将具有有机溶剂的改性中空纤维膜用于膜分离反应器以配置水回收系统。三维分析了改性跟随纤维膜的表面和内部孔的变化。将膜分离反应器在MLSS为7200 mg / 1的条件下运行120天的结果与纯水的结果进行了比较。监测渗透通量和分离效率的变化，我们努力预测反洗的可能性和突破点。在初始操作过程中，膜表面的污染逐渐增加，而内部孔没有变化，而长期操作显示内部孔减少并且微原纤维发生了变化，这表明反冲洗的可能性极小。由于在40天的运行中由于膜表面污染的增加，吸入压力从1个大气压升至大于2个大气压，因此需要连续监测渗透通量和吸入压力。超过100天的运行结果表明，由于结垢而无法进行反冲洗。

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