| 大块液膜技术处理含六价铬废水 |
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| 引用本文： | 张卫东,马竞男,任钟旗,王厚林,杜昌顺.大块液膜技术处理含六价铬废水[J].电镀与涂饰,2007,26(12):31-33. |
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| 作者姓名： | 张卫东 马竞男 任钟旗 王厚林 杜昌顺 |
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| 作者单位： | 北京化工大学化工资源有效利用国家重点实验室,北京,100029 |
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| 基金项目： | 国家自然科学基金(20576008)，教育部新世纪优秀人才支持计划(NCET-05-0122)，北京化工大学青年教师基金(QN0606)。 |
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| 摘 要： | 以磷酸三丁酯(TBP)为载体,煤油为稀释剂,NaOH为反萃剂,采用大块液膜技术处理含95~100mg/LCr(VI)的模拟废水。考察了液膜相用量、载体体积分数及反萃剂浓度对大块液膜过程中Cr(VI)传质过程的影响。结果表明,大块液膜技术对废水中Cr(VI)的去除效果较好。Cr(VI)迁移速率随TBP体积分数的提高而加快。当反萃剂NaOH浓度大于0.5mol/L时,反萃剂浓度对Cr(VI)传质过程的影响较小。处理后废水中Cr(VI)含量降至0.5mg/L以下,达到国家排放标准。
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| 关 键 词： | 六价铬 废水处理 大块液膜 磷酸三丁酯 |
| 文章编号： | 1004-227X(2007)12-0031-03 |
| 修稿时间： | 2007年5月25日 |
Treatment of chromium(VI)-containing wastewater by bulk liquid membrane technology |
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| ZHANG Wei-dong,MA Jing-nan,REN Zhong-qi,WANG Hou-lin,DU Chang-shun.Treatment of chromium(VI)-containing wastewater by bulk liquid membrane technology[J].Electroplating & Finishing,2007,26(12):31-33. |
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| Authors: | ZHANG Wei-dong MA Jing-nan REN Zhong-qi WANG Hou-lin DU Chang-shun |
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| Abstract: | The bulk liquid membrane (BLM) was used to treat artificial wastewater containing 95-100 mg/L Cr(VI) by using tri-n-butyl phosphate (TBP) as carrier, kerosene as diluent and NaOH solution as stripper. The effects of the volume of liquid membrane phase, volume fraction of the carrier and concentration of the stripper on the mass transport of Cr(VI) were studied. The results showed that the removal efficiency of Cr(VI) is high by BLM technology. The transport of Cr(VI) is accelerated with increasing volume fraction of carrier and is less affected by the concentration of stripper at NaOH concentration >0.5 mol/L. The content of Cr(VI) in the treated wastewater is less than 0.5 mg/L, reaching the national discharge standard. |
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| Keywords: | hexavalent chromium wastewater treatment bulk liquid membrane (BLM) tri-n-butyl phosphate (TBP) |
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