| 饮用水处理中活性炭吸附卤乙酸的特性 |
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| 引用本文： | 曹莉莉,张晓健,王占生,刘文君,李爽,张素霞,姜颍,吴卫革,金维荣.饮用水处理中活性炭吸附卤乙酸的特性[J].环境科学,1999,20(5):72-75. |
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| 作者姓名： | 曹莉莉 张晓健 王占生 刘文君 李爽 张素霞 姜颍 吴卫革 金维荣 |
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| 作者单位： | [1]清华大学环境科学与工程系 [2]北京市自来水公司第九水厂 |
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| 摘 要： | 采用静态和动态试验研究了活性炭对卤乙酸的物理吸附特性。静态试验表明：在单吸附质条件下，二氯乙酸和三氯乙酸的吸附等温线在低浓度区（Ｃｅ〈５０μｇ／Ｌ）表现为单层吸附，在高浓度区表现为多层吸附。活性炭对三氯乙酸的吸附能力高于二氯乙酸。在饮用水处理常见的浓度范围内，活性炭对三氯乙酸的吸附容量约为二氯乙酸的２倍。在多吸附质条件下，对三氯乙酸的吸附容量只略的降低，对二氯乙酸的吸附容量则显著下降，这与有机物的
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| 关 键 词： | 饮用水 卤乙酸 颗粒活性炭 吸附等温线 水处理 |
| 收稿时间： | 1998/11/6 0:00:00 |
Adsorption Characteristics of Haloacetic Acids by Activated Carbonin Drinking Water Treatment |
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| Cao Lili,Zhang Xiaojian,Wang Zhansheng,Liu Wenjun,Li Shuang,Zhang Suxi,Jiang Ying,Wu Weige and Jin Weirong.Adsorption Characteristics of Haloacetic Acids by Activated Carbonin Drinking Water Treatment[J].Chinese Journal of Environmental Science,1999,20(5):72-75. |
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| Authors: | Cao Lili Zhang Xiaojian Wang Zhansheng Liu Wenjun Li Shuang Zhang Suxi Jiang Ying Wu Weige and Jin Weirong |
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| Affiliation: | Dept. of Environ. Sci. & Eng., Tsinghua University, Beijing 100084, China;Dept. of Environ. Sci. & Eng., Tsinghua University, Beijing 100084, China;Dept. of Environ. Sci. & Eng., Tsinghua University, Beijing 100084, China;Dept. of Environ. Sci. & Eng., Tsinghua University, Beijing 100084, China;Dept. of Environ. Sci. & Eng., Tsinghua University, Beijing 100084, China;NO.9 Water Works of Beijing;NO.9 Water Works of Beijing;NO.9 Water Works of Beijing;Dept. of Environ. Sci. & Eng., Tsinghua University, Beijing 100084, China |
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| Abstract: | Isotherm tests and column tests were made to study characteristics of adsorption of haloacetic acids (HAAs) by activated carbon.Isotherm tests show that single layer adsorption occurs at low concentration zone(ce<50g/L)under single component system for trichloroacetic acid (TCAA) and dichloroacetic acid(DCAA),while multiple layer adsorption occurs at higher concentration zone.Carbon adsorption capacity for TCAA is higher than for DCAA.In the concentration range usually met in drinking water treatment,adsorption capacity for TCAA is approximately twice as much as for DCAA.Under multicomponent system,adsorption capacity for TCAA drops slightly while the capacity for DCAA drops significantly.The above results consist with structure character of different organic compounds.Column tests show that DCAA is the controlling compound for GAC operation by physical adsorption when influent concentration of TCAA and DCAA are at the same level. When influent concentration of TCAA and DCAA both are 10g/L,the exhaustive times for TCAA and DCAA of the GAC bed used in water treatment are no longer than 1094d and 462d,respectively.The operation efficiency of GAC column is very high and the saturation percent are all above 92%.GAC adsorption in an efficient way to remove HAAs in drinking water. |
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| Keywords: | drinking water HAAs GAC adsorption isotherm |
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