| 生物活性炭去除水中挥发性苯系物的基础研究 |
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| 引用本文： | 张巍,丁伟杰,应维琪.生物活性炭去除水中挥发性苯系物的基础研究[J].中国环境科学,2011,31(12):1965-1971. |
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| 作者姓名： | 张巍 丁伟杰 应维琪 |
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| 作者单位： | 华东理工大学国家环境保护化工过程环境风险评价与控制重点实验室,上海,200237 |
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| 基金项目： | 国家自然科学基金资助项目，上海市自然科学基金，中央高校基本科研业务费专项资金资助，环保公益性行业科研专项经费 |
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| 摘 要： | 采用连续流生物活性炭(BAC)工艺处理水中挥发性苯系物(BTEX，包括苯、甲苯、乙苯、二甲苯),评价进水负荷、活性炭炭型等因素对于BAC处理性能的影响.研究表明,在40d的处理时间内,除苯之外,其余BTEX的BAC出水中均未检出苯系物(进水为6mg/L).为了检验BAC在高BTEX负荷情况时的处理效果,将进水浓度设定为19~32mg/L左右,在EBCT为1.2min条件下同样只有苯的出水浓度上升至10mg/L(C/Cin为0.45),然后略有下降,最终保持在5~10mg/L(C/Cin为0.3以下),其余苯系物出水浓度均一直保持小于5mg/L.这表明BAC可以有效地处理高负荷BTEX(8.68~12.9kgTOC/(m3·d))的进水.生物活性炭对于活性炭吸附容量的恢复有比较明显的作用,煤质炭和椰壳炭的生物再生效率分别为53.6%和26.6%,煤质炭再生效率高的原因可能是其具备更多的大型中孔和大孔.
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| 关 键 词： | 生物活性炭 苯系物 吸附容量 再生 |
| 收稿时间： | 2011-03-29; |
Biological activated carbon treatment for removing BTEX from water. |
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| ZHANG Wei,DING Wei-jie,YING Wei-chi.Biological activated carbon treatment for removing BTEX from water.[J].China Environmental Science,2011,31(12):1965-1971. |
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| Authors: | ZHANG Wei DING Wei-jie YING Wei-chi |
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| Institution: | ZHANG Wei,DING Wei-jie,YING Wei-chi*(State Environmental Protection Key Laboratory of Environmental Risk Assessment and Control on Chemical Process,East China University of Science and Technology,Shanghai 200237,China). |
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| Abstract: | A series of continuous flow biological activated carbon(BAC) columns were operated for removing benzene,toluene,ethylbenzene and xylene(BTEX) from water to evaluate the effect of high loading and carbon type on the BAC treatment performance.The inoculated granular activated carbon(GAC) columns(EBCT =3.2min) became stable BAC systems quickly;with the exception of benzene,the TEX were totally removed from the 6mg/L single compound influent during the 40d study.The BAC treatment performance was affected for a ... |
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| Keywords: | biological activated carbon BTEX adsorption capacity regeneration |
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