纳米零价铁处理冶炼废水

刘一源; 雷轰; 王伟; 滑熠龙

环境工程学报

纳米零价铁处理冶炼废水

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刘一源, 雷轰, 王伟, 滑熠龙. 纳米零价铁处理冶炼废水[J]. 环境工程学报, 2014, 8(10): 4233-4238.

引用本文:

刘一源, 雷轰, 王伟, 滑熠龙. 纳米零价铁处理冶炼废水[J]. 环境工程学报, 2014, 8(10): 4233-4238.

Liu Yiyuan, Lei Hong, Wang Wei, Hua Yilong. Treatment of smelting wastewater by nanoscale zero-valent iron[J]. Chinese Journal of Environmental Engineering, 2014, 8(10): 4233-4238.

Citation:

Liu Yiyuan, Lei Hong, Wang Wei, Hua Yilong. Treatment of smelting wastewater by nanoscale zero-valent iron[J]. Chinese Journal of Environmental Engineering, 2014, 8(10): 4233-4238.

纳米零价铁处理冶炼废水

1.
同济大学环境科学与工程学院, 污染控制与资源化研究国家重点实验室, 上海 200092
基金项目:
国家自然科学基金资助项目（21277102）

上海市科委基础研究重点项目（11JC1412600）
中图分类号: X703

Treatment of smelting wastewater by nanoscale zero-valent iron

1.
College of Environmental Science and Engineering, State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, Shanghai 200092, China
Fund Project:

摘要: 多年的理论和机制研究发现，纳米零价铁（NZVI）作为还原剂及吸附剂，可处理水溶液中的多种重金属及类金属物质；而高效处理含高浓度重金属且成分复杂的冶炼废水是一项技术难题。本研究针对特定的冶炼废水（高浓度重金属及砷、高浓度氨氮、低pH、高含盐量），研究了pH及NZVI投加量对砷、铜、锌、铅、镍的处理效果，并考察了连续流反应器中水力停留时间（HRT）及NZVI投加量对处理效果的影响。实验通过电感耦合等离子体发射光谱仪（ICP-OES）进行水样测试，扫描电子显微镜（SEM）、X射线衍射仪（XRD）进行固相表征。实验表明，通过NZVI处理，砷、铜、锌、铅、镍去除率均达99%以上，出水浓度均小于0.1 mg/L，达到废水排放标准（GB 8978-1996）。通过连续流反应器的应用发现，适当增大HRT、增加NZVI投加量，有利于更长时间保证出水水质的良好，延长NZVI消耗时间，提高废水处理量。结果显示，NZVI对复杂冶炼废水有极好的处理效果，在废水处理领域有着独特的优势，为后续研究及实际应用提供借鉴。
- 纳米零价铁 /
- 连续流反应器 /
- 冶炼废水
Abstract: Nanoscale zero-valent iron (NZVI) has been found as an efficient reductant and adsorbent for heavy metals in aqueous solution.The treatment of smelting wastewater is highly toxic and difficult due to its complex composition and high density of arsenic and heavy metals.Aiming at treating specific kind of smelting water containing concentrated heavy metals,arsenic and ammonia,low pH and high salinity,an experiment was conducted to study the treatment efficiency of As,Cu,Zn,Pb and Ni with different pH and NZVI doses.The influences of hydraulic retention time (HRT) and NZVI dose on the treatment of continuous flow reactor were examined as well.Samples were analyzed by inductively coupled plasma emission spectrometer (ICP-OES) and characterized by scanning electron microscope (SEM) and X-ray diffraction (XRD).After reaction with NZVI,the removal efficiencies of As,Cu,Zn,Pb and Ni were all over 99%.Meanwhile,the concentrations of heavy metals in effluent were less than 0.1 mg/L,which obviously met the government standard (GB 8978-1996).Further study on the continuous flow reactor proved that a longer breakthrough time and larger treatment capacity was presented by increasing HRT and NZVI dose properly.The result shows that NZVI is highly efficient in smelting wastewater treatment and the study will provide a certain reference for future research and practical application.
- nanoscale zero-valent iron /
- continuous flow reactor /
- smelting wastewater

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刘一源, 雷轰, 王伟, 滑熠龙. 纳米零价铁处理冶炼废水[J]. 环境工程学报, 2014, 8(10): 4233-4238.

引用本文:

刘一源, 雷轰, 王伟, 滑熠龙. 纳米零价铁处理冶炼废水[J]. 环境工程学报, 2014, 8(10): 4233-4238.

Liu Yiyuan, Lei Hong, Wang Wei, Hua Yilong. Treatment of smelting wastewater by nanoscale zero-valent iron[J]. Chinese Journal of Environmental Engineering, 2014, 8(10): 4233-4238.

Citation:

Liu Yiyuan, Lei Hong, Wang Wei, Hua Yilong. Treatment of smelting wastewater by nanoscale zero-valent iron[J]. Chinese Journal of Environmental Engineering, 2014, 8(10): 4233-4238.

纳米零价铁处理冶炼废水

1. 同济大学环境科学与工程学院, 污染控制与资源化研究国家重点实验室, 上海 200092

收稿日期: 2014-06-27

基金项目:

国家自然科学基金资助项目（21277102）

上海市科委基础研究重点项目（11JC1412600）

关键词:

摘要: 多年的理论和机制研究发现，纳米零价铁（NZVI）作为还原剂及吸附剂，可处理水溶液中的多种重金属及类金属物质；而高效处理含高浓度重金属且成分复杂的冶炼废水是一项技术难题。本研究针对特定的冶炼废水（高浓度重金属及砷、高浓度氨氮、低pH、高含盐量），研究了pH及NZVI投加量对砷、铜、锌、铅、镍的处理效果，并考察了连续流反应器中水力停留时间（HRT）及NZVI投加量对处理效果的影响。实验通过电感耦合等离子体发射光谱仪（ICP-OES）进行水样测试，扫描电子显微镜（SEM）、X射线衍射仪（XRD）进行固相表征。实验表明，通过NZVI处理，砷、铜、锌、铅、镍去除率均达99%以上，出水浓度均小于0.1 mg/L，达到废水排放标准（GB 8978-1996）。通过连续流反应器的应用发现，适当增大HRT、增加NZVI投加量，有利于更长时间保证出水水质的良好，延长NZVI消耗时间，提高废水处理量。结果显示，NZVI对复杂冶炼废水有极好的处理效果，在废水处理领域有着独特的优势，为后续研究及实际应用提供借鉴。

English Abstract

Treatment of smelting wastewater by nanoscale zero-valent iron

1. College of Environmental Science and Engineering, State Key Laboratory of Pollution Control and Resource Reuse, Tongji University, Shanghai 200092, China

Received Date: 2014-06-27

Fund Project:

Keywords:

Abstract: Nanoscale zero-valent iron (NZVI) has been found as an efficient reductant and adsorbent for heavy metals in aqueous solution.The treatment of smelting wastewater is highly toxic and difficult due to its complex composition and high density of arsenic and heavy metals.Aiming at treating specific kind of smelting water containing concentrated heavy metals,arsenic and ammonia,low pH and high salinity,an experiment was conducted to study the treatment efficiency of As,Cu,Zn,Pb and Ni with different pH and NZVI doses.The influences of hydraulic retention time (HRT) and NZVI dose on the treatment of continuous flow reactor were examined as well.Samples were analyzed by inductively coupled plasma emission spectrometer (ICP-OES) and characterized by scanning electron microscope (SEM) and X-ray diffraction (XRD).After reaction with NZVI,the removal efficiencies of As,Cu,Zn,Pb and Ni were all over 99%.Meanwhile,the concentrations of heavy metals in effluent were less than 0.1 mg/L,which obviously met the government standard (GB 8978-1996).Further study on the continuous flow reactor proved that a longer breakthrough time and larger treatment capacity was presented by increasing HRT and NZVI dose properly.The result shows that NZVI is highly efficient in smelting wastewater treatment and the study will provide a certain reference for future research and practical application.

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纳米零价铁处理冶炼废水

Treatment of smelting wastewater by nanoscale zero-valent iron

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纳米零价铁处理冶炼废水

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Treatment of smelting wastewater by nanoscale zero-valent iron

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