高校化学工程学报2016，Vol.30Issue(5)：1213-1221,9.DOI:10.3969/j.issn.1003-9015.2016.05.033
双套型中空纤维膜接触器用于脱除水溶液中氨氮
Removal of Ammonia from Aqueous Solutions Using a Dual-Hollow Fiber Membrane Contactor
张宗阳 1郝兴阁 1赵建敏 1秦英杰 1姚兵 2马文婵 3刘立强3
作者信息
- 1. 天津大学 化工学院，天津 300072
- 2. 天津凯铂能膜工程技术有限公司，天津 300308
- 3. 石药集团中诺药业有限公司，河北 石家庄 050041
- 折叠
摘要
Abstract
Removal of ammonia from aqueous solutions using a dual-hollow fiber membrane contactor (which contains two sets of hydrophobic microporous hollow fibers) was investigated, and a theoretical model was developed to simulate the experimental results. The influence of various experimental parameters on the performance of the new membrane contactor was studied and compared with traditional membrane contactors under similar operation conditions. Experimental results show that the concentration of the by-product (ammonium sulfate solution) obtained by the new contactor is 29% higher than that from the traditional one, due to the osmotic distillation reducing effect. When the hydrogen ion molar flow rate in the stripping solution is 1.2 times lower than that of ammonia in the feed solution, the overall mass transfer coefficient K of the new contactor is >6 times higher than that of the traditional one. This result indicates that the new contactor overcomes the obvious shell mass transfer resistance caused by non-ideal flow in the traditional module. The long-term experiment lasting 600 days using pretreated landfill leachate as feed shows that the potential working life of the new contactor is much longer.关键词
双套膜型膜接触器/脱氨/传质系数/稳定性Key words
Dual-hollow fiber membrane contactor/ammonia removal/mass transfer coefficient/stability分类
化学化工引用本文复制引用
张宗阳,郝兴阁,赵建敏,秦英杰,姚兵,马文婵,刘立强..双套型中空纤维膜接触器用于脱除水溶液中氨氮[J].高校化学工程学报,2016,30(5):1213-1221,9.
