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期刊信息
  • 主管单位:
  • 上海市教育委员会
  • 主办单位:
  • 上海理工大学、上海市能源研究会、上海电气(集团)总公司
  • 主  编:
  • 陈康民
  • 地  址:
  • 上海市军工路516号
  • 邮政编码:
  • 200093
  • 联系电话:
  • 021-55272843
  • 电子邮件:
  • eribjb@usst.edu.cn
  • 国际标准刊号:
  • 1008-8857
  • 国内统一刊号:
  • 31-1410/TK
  • 邮发代号:
  • 单    价:
  • 5.00
  • 定    价:
  • 20.00
Fe/C微电解协同臭氧氧化组合工艺处理Cu(Ⅱ)-EDTA络合废水
Application of Fe/C micro-electrolysis combined with ozonation process on treating Cu(Ⅱ)-EDTA wastewater
投稿时间:2019-03-27  
DOI:10.13259/j.cnki.eri.2019.02.003
中文关键词:  电镀废水  金属络合物  Fe/C微电解  臭氧氧化
英文关键词:electroplating wastewater  metal complex  Fe/C micro-electrolysis  ozonation
基金项目:
作者单位
颜宁 上海理工大学 环境与建筑学院, 上海 200093 
徐苏云 上海理工大学 环境与建筑学院, 上海 200093 
孙洋洋 上海理工大学 环境与建筑学院, 上海 200093 
刘洪波 上海理工大学 环境与建筑学院, 上海 200093 
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中文摘要:
      采用Fe/C微电解协同臭氧氧化组合工艺对乙二胺四乙酸络合铜[Cu(Ⅱ)-EDTA]废水进行处理。分别考察了先臭氧氧化后微电解 (O3-Fe/C)、先微电解后臭氧氧化 (Fe/C-O3)以及微电解与臭氧氧化同时进行 (Fe/C+O3) 等三种组合方式对Cu(Ⅱ)-EDTA溶液中铜离子及总有机碳(TOC)去除效果的影响,同时对工艺条件进行参数优化,并对反应机理进行初步探讨。结果表明,先微电解后臭氧氧化的处理效果明显优于其他两种组合方式;最佳工艺条件为Fe/C微电解处理10 min后通入O3进行氧化反应20 min,其中Fe、C质量比为1∶1、铁屑投加量为3 g·L-1、溶液初始pH为3。在该条件下,当Cu(Ⅱ)初始质量浓度为5 mg·L-1、EDTA与Cu(Ⅱ)的摩尔比为1∶1时,Cu(Ⅱ)和TOC的去除率分别可达97.5%和71.9%。Fe/C微电解的氧化还原作用使部分Cu(Ⅱ)-EDTA破络并将Cu(Ⅱ)还原去除,同步释放出的Fe2+在臭氧氧化时发挥催化作用,促使产生更多·OH,从而加速Cu(Ⅱ)-EDTA的氧化破络。
英文摘要:
      In this paper, the process of Fe/C micro-electrolysis synergized ozonation was used to treat Cu(Ⅱ)-EDTA wastewater. Different combination processes were investigated on the removal performance of copper ions and TOC in Cu(Ⅱ)-EDTA solution, i.e. ozonation before Fe/C micro-electrolysis process (O3-Fe/C), Fe/C micro-electrolysis followed by ozonation process (Fe/C-O3), and the simultaneous Fe/C micro-electrolysis and ozonation process (Fe/C+O3). The operating parameters were optimized for the combination process, and related reaction mechanisms were also discussed preliminarily. Results showed that the treatment efficiency of Fe/C-O3 process was superior to other two processes, i.e. Fe/C micro-electrolysis of 10 min followed by ozonation of 20 min, which optimized reaction conditions were mass ratio of Fe and C=1:1, iron filings dosage=3 g·L-1 and pH=3. Under this condition, when the initial concentration of Cu(Ⅱ)=5 mg·L-1 and nEDTA:nCu(Ⅱ)=1:1, the removal rates of Cu(Ⅱ) and TOC were 97.5% and 71.9%, respectively. The oxidation-reduction action of Fe/C micro-electrolysis leads to partial decomplexation of Cu(Ⅱ)-EDTA and the reduction of Cu(Ⅱ) to Cu, meanwhile the simultaneously released Fe2+ plays a catalytic role in the ozonation stage, which promotes the generation of more ·OH, thus accelerating the decomplexation of Cu(Ⅱ)-EDTA.
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