| 用梯度氧化铝膜净化空气 |
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| 引用本文： | 黄肖容,隋贤栋,刘悦晖. 用梯度氧化铝膜净化空气[J]. 环境工程, 2001, 19(3): 32-35 |
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| 作者姓名： | 黄肖容 隋贤栋 刘悦晖 |
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| 作者单位： | 华南理工大学化工系, |
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| 基金项目： | 广东省自然科学基金资助项目 !(980 52 6) |
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| 摘 要： | 研究了孔径沿径向由大到小自然过渡的梯度氧化铝陶瓷膜管对空气的过滤净化。梯度氧化铝膜管控制层平均孔径为 0 2 μm ,对于空气中粒径大于或等于 0 2 2 μm的颗粒 ,膜管的截留率达到 10 0 % ;细菌的总滤除率为 99 99%。提高操作压力和错流线速度都有利于提高膜的过滤通量。空气净化过程中截留在空气中的微粒沉积于梯度氧化铝膜的管内壁 ,防止膜管的深层堵塞 ,使用过程通量下降缓慢 ,一次性使用寿命为 4年 ,易于清洗 ,清洗后过滤通量和过滤效率仍达 10 0 %
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| 关 键 词： | 无机陶瓷膜 梯度氧化铝膜 空气净化 |
CLEANING AIR BY FILTRATION OF GRADIENT ALUMINA MEMBRANES |
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| Huang Xiaorong et al. CLEANING AIR BY FILTRATION OF GRADIENT ALUMINA MEMBRANES[J]. Environmental Engineering, 2001, 19(3): 32-35 |
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| Authors: | Huang Xiaorong et al |
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| Affiliation: | Huang Xiaorong et al |
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| Abstract: | Cleaning air by filtration of the gradient tubular alumina membranes was studied.The retention efficiency of the total suspended particulates larger than 0.22μm was 100%.Sterilization efficiency was 99.99%.The higher the filtration pressure,the higher the flux of the membrane.The higher the velocity of the cross flow,the higher the flux of the membrane.The contaminants of the air were deposited on the controlled layer of the gradient tubular alumina membrane without deep pollution and plug of the membrane.The decline of the flux was smooth with time.The use life of the membrane was 4 years without cleaning.It was cleaned easily when the gradient tubular alumina membrane was polluted.The flux and the filtration efficiency were 100% after cleaning. |
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| Keywords: | inorganic ceramic membrane gradient alumina membrane and air cleaning |
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