| 膜接触反应器臭氧传质及其对模拟印染废水的降解 |
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| 引用本文： | 张勇, 王军, 侯得印, 刘会娟. 膜接触反应器臭氧传质及其对模拟印染废水的降解[J]. 环境工程学报, 2017, 11(8): 4453-4458. doi: 10.12030/j.cjee.201607215 |
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| 作者姓名： | 张勇 王军 侯得印 刘会娟 |
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| 作者单位： | 1. 中国科学院生态环境研究中心, 环境水质学国家重点实验室, 北京 100085; 2. 中国科学院生态环境研究中心, 高浓度难降解有机废水处理技术国家工程实验室, 北京 100085; 3. 中国科学院大学, 北京 100049 |
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| 基金项目： | 国家重点研发计划（2016YFC0400501） 国家水体污染控制与治理科技重大专项（2012ZX07202006-003-2） 国家自然科学基金资助项目（51578533） |
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| 摘 要： | 对膜接触反应器传质过程及其在模拟印染废水降解中的应用进行了研究。实验表明，产水臭氧浓度随着液相雷诺数、气相臭氧浓度和膜长的增加而升高，随着温度升高而下降。在膜接触反应器中，臭氧体积传质系数kLa可达0.317 s-1，比鼓泡反应器大15~62倍。对模拟印染废水的降解速率常数ka可达0.336 s-1， 比鼓泡反应器大65%，而比臭氧消耗量为鼓泡反应器的45%。实验表明，膜接触反应器具有体积较小，臭氧利用效率较高等优势。
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| 关 键 词： | 膜接触反应器 中空纤维膜 疏水膜 无泡 臭氧 |
| 收稿时间： | 2016-10-18 |
Using a membrane contactor for ozone mass transfer study and model dye wastewater treatment |
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| ZHANG Yong, WANG Jun, HOU Deyin, LIU Huijuan. Using a membrane contactor for ozone mass transfer study and model dye wastewater treatment[J]. Chinese Journal of Environmental Engineering, 2017, 11(8): 4453-4458. doi: 10.12030/j.cjee.201607215 |
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| Authors: | ZHANG Yong WANG Jun HOU Deyin LIU Huijuan |
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| Affiliation: | 1. State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; 2. The National Engineering Laboratory of Industrial Wastewater Treatment, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; 3. University of Chinese Academy of Sciences, Beijing 100049, China |
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| Abstract: | In this work, the mass transfer principles and dyestuff treatment in a membrane contactor were studied. The results indicated that the ozone concentration in the outlet water was promoted by its Reynolds number, ozone concentration in gas phase, and membrane length, while it was restrained by temperature. The mass transfer coefficient kLa was 0.317 s-1, which was 15 to 62 times greater than that of the bubble contactor. The degradation rate coefficient of the model dyestuff was 0.336 s-1, which was 65% greater than that of the bubble contactor, while the ozone consumption rate was 45% lower. The results indicated that the membrane contactor was smaller in size and had a higher ozone utilization efficiency compared to traditional contactors. |
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| Keywords: | membrane contactor hollow fiber membrane hydrophobic membrane bubble-free ozone |
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