摘要
采用截留分子量30000,20000,10000和6000的超滤膜,对草浆黑液进行了超滤过程中膜阻力分布的研究.通过测定不同条件下膜样品的通量,对聚乙二醇标准物的截留率,指出在超滤黑液过程中各部分阻力的比例和超滤膜的分离特性的变化.各种膜样品的热重分析结果表明,膜污染是由微量有机物引起的污染.
The UF membranes which have 30000, 20000, 1000 and 6000 molecular weights cut-off were used to study the distribution of the membrane resistance in the process of ultrafiltrating black liquid. According to the flows measured under different conditions and the rejection rates of the standard material - PEG, the ratios of every part of membrane resistance and the changes of characteristic of the separations of UF membranes were presented. The results of thermalgravimetric analysis for various membrane samples showed the membrane fouling was caused by small amount of organic substances.
出处
《中国环境科学》
EI
CAS
CSSCI
CSCD
北大核心
2001年第6期560-563,共4页
China Environmental Science
