| 含氟废水的粉煤灰吸附研究 |
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| 引用本文： | 阎存仙 谭奎. 含氟废水的粉煤灰吸附研究[J]. 上海环境科学, 1997, 16(7): 30-33,41 |
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| 作者姓名： | 阎存仙 谭奎 |
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| 作者单位： | 上海交通大学 上海200030(阎存仙)，上海交通大学 上海200030(谭奎) |
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| 基金项目： | 上海市环保局科研基金资助项目 |
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| 摘 要： | 采用热电厂库弃物粉煤灰为吸附剂，对氟离子浓度为１００￣５００ｍｇ／Ｌ含氟废水进行了除氟研究，并搪塞了除氟机理。结果表明，除氟性能与粉煤类的粒径大小，吸附时间，氟离子初始浓度，废水的ＰＨ值，温度等有关，粉煤灰－氟离子体系的吸附行为符合Ｌａｎｇｍｕｉｒ吸附等温方程，氟离子在粉灰煤表面形成了氢键吸附和取代吸附。除氟率达９０％以上，除氟后的饱和灰烧制成砖块，对环境不引起二次污染。
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| 关 键 词： | 粉煤灰 废水处理 吸附机理 含氟废水 热电厂 |
Removal of Fluoride from Wastewater by Adsorption on Fly Ash |
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| Yan Cunxian Tan Kui. Removal of Fluoride from Wastewater by Adsorption on Fly Ash[J]. Shanghai Environmental Science, 1997, 16(7): 30-33,41 |
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| Authors: | Yan Cunxian Tan Kui |
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| Abstract: | Removal of fluoride from 100-500mg/L F wastewater with fly ash has been studied, and attempted to explore the adsorption mechanism. The result showed that the adsorption was dependent on the grain size of fly ash, contact time, initial concentration of wastewater. pH and temperature. The experimental data could fit the Langmuir isotherm formula perfectly. Efficiency of difluoridation reached over 90%. It was suggested that making brick with used fly ash would be a good disposal without causing secondary pollution to environment. |
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| Keywords: | Fly ash Fluoride Wastewater treatment Adsorption mechanism |
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