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富含活性氯与Al13水处理药剂对铜氰络合物去除效能

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游丽燕, 胡承志, 刘会娟, 曲久辉, 张强斌. 富含活性氯与Al13水处理药剂对铜氰络合物去除效能[J]. 环境工程学报, 2014, 8(4): 1391-1396.
引用本文: 游丽燕, 胡承志, 刘会娟, 曲久辉, 张强斌. 富含活性氯与Al13水处理药剂对铜氰络合物去除效能[J]. 环境工程学报, 2014, 8(4): 1391-1396.
shu
You Liyan, Hu Chengzhi, Liu Huijuan, Qu Jiuhui, Zhang Qiangbin. Effective treatment of copper-cyanide complex by a novel water treatment reagent[J]. Chinese Journal of Environmental Engineering, 2014, 8(4): 1391-1396.
Citation: You Liyan, Hu Chengzhi, Liu Huijuan, Qu Jiuhui, Zhang Qiangbin. Effective treatment of copper-cyanide complex by a novel water treatment reagent[J]. Chinese Journal of Environmental Engineering, 2014, 8(4): 1391-1396.
shu

富含活性氯与Al13水处理药剂对铜氰络合物去除效能

  • 1.

    中国科学院生态环境研究中心环境水质学国家重点实验室, 北京 100085

  • 2.

    中国石油大学(北京)地球科学学院, 北京 102249

  • 3.

    中国石油大学(北京)油气污染防治北京市重点实验室, 北京 102249

  • 基金项目:

    国家自然科学基金资助项目（51225805，51221892）

  • 中图分类号: X703

Effective treatment of copper-cyanide complex by a novel water treatment reagent

  • 1.

    State Key Laboratory of Environmental Aquatic Chemistry, Research Center for Eco-Environment Sciences, Chinese Academy of Sciences, Beijing 100085, China

  • 2.

    College of Geoscience, China University of Petroleum (Beijing), Beijing 102249, China

  • 3.

    Beijing Key Laboratory of Oil and Gas Pollution Control, China University of Petroleum (Beijing), Beijing 102249, China

  • Fund Project:

  • 摘要: 含重金属铜离子与氰离子（CN）的络合物广泛存在于电镀、冶金等工业废水中，是一种较难处理的污染物。富含活性氯和Al13聚合体的水处理药剂（PACC）兼具氧化和絮凝效能，在处理含重金属氰络合物（[Cu(CN)3]2-）废水方面具有良好的应用前景。研究PACC与[Cu(CN)3]2-的反应计量学、动力学，考察了pH、反应时间和投药量等影响因素，确定PACC的最佳工作参数。结果表明，PACC可同时实现对CN的氧化和对Cu2+的絮凝，有效去除水中[Cu(CN)3]2-。使用PACC对[Cu(CN)3]2-的无害化处置过程分为2个阶段：CN-首先被氧化成氰酸根（OCN-）；然后OCN-被进一步氧化并生成碳酸氢根和氮气，同时所释放的游离态铜离子被絮凝去除。这2个阶段反应的最佳pH分别为11和8，去除1 mol [Cu(CN)3]2-的最佳投药量为9.35 mol Cl2的PACC；在此条件下反应43 min后，其出水中CN-和Cu2+的浓度均达到排放标准（GB21900-2008）要求。
    Abstract: Copper cyanide complexes ([Cu(CN)3]2-) are produced in several types of industry that include electroplating,mining,and they are difficult to be removed from wastewater.A novel water treatment reagent containing high content of active chlorine and Al13 polymer (PACC) was prepared by electrochemical method.PACC has shown a promising potential for the removal of metal-cyanide complex due to the combined functions of oxidation and coagulation.In order to determine the optimal working conditions of PACC,stoichiometry and kinetics of the reaction between PACC and [Cu(CN)3]2- were investigated,and a series of experiments about pH value,reaction time and dosage effect were carried out.The results indicate that PACC is effective for the treatment of [Cu(CN)3]2- through the oxidation of CN- by active chloride and the subsequent removal of Cu2+ by coagulation with Al13 polymer.Two stages were carried out for the complete treatment of [Cu(CN)3]2-.CN- was oxidized to OCN- in the first stage,then OCN- was further converted into carbonate and nitrogen and the liberated Cu2+ was removed by coagulation in the second stage.The optimal pH values of these two-stages are pH 11.0 and pH 8.0,respectively.The optimal dosage is 9.35 mol Cl2 PACC for the treatment of 1 mol [Cu(CN)3]2-.The reaction time is about 43 minutes under these conditions and the concentration of cyanide and copper both meet the requirement of GB21900-2008.
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  • 收稿日期:  2013-02-28
  • 刊出日期:  2014-03-28
游丽燕, 胡承志, 刘会娟, 曲久辉, 张强斌. 富含活性氯与Al13水处理药剂对铜氰络合物去除效能[J]. 环境工程学报, 2014, 8(4): 1391-1396.
引用本文: 游丽燕, 胡承志, 刘会娟, 曲久辉, 张强斌. 富含活性氯与Al13水处理药剂对铜氰络合物去除效能[J]. 环境工程学报, 2014, 8(4): 1391-1396.
shu
You Liyan, Hu Chengzhi, Liu Huijuan, Qu Jiuhui, Zhang Qiangbin. Effective treatment of copper-cyanide complex by a novel water treatment reagent[J]. Chinese Journal of Environmental Engineering, 2014, 8(4): 1391-1396.
Citation: You Liyan, Hu Chengzhi, Liu Huijuan, Qu Jiuhui, Zhang Qiangbin. Effective treatment of copper-cyanide complex by a novel water treatment reagent[J]. Chinese Journal of Environmental Engineering, 2014, 8(4): 1391-1396.
shu

富含活性氯与Al13水处理药剂对铜氰络合物去除效能

  • 1.  中国科学院生态环境研究中心环境水质学国家重点实验室, 北京 100085
  • 2.  中国石油大学(北京)地球科学学院, 北京 102249
  • 3.  中国石油大学(北京)油气污染防治北京市重点实验室, 北京 102249
  • 收稿日期:  2013-02-28
基金项目:

国家自然科学基金资助项目（51225805，51221892）

摘要: 含重金属铜离子与氰离子（CN）的络合物广泛存在于电镀、冶金等工业废水中，是一种较难处理的污染物。富含活性氯和Al13聚合体的水处理药剂（PACC）兼具氧化和絮凝效能，在处理含重金属氰络合物（[Cu(CN)3]2-）废水方面具有良好的应用前景。研究PACC与[Cu(CN)3]2-的反应计量学、动力学，考察了pH、反应时间和投药量等影响因素，确定PACC的最佳工作参数。结果表明，PACC可同时实现对CN的氧化和对Cu2+的絮凝，有效去除水中[Cu(CN)3]2-。使用PACC对[Cu(CN)3]2-的无害化处置过程分为2个阶段：CN-首先被氧化成氰酸根（OCN-）；然后OCN-被进一步氧化并生成碳酸氢根和氮气，同时所释放的游离态铜离子被絮凝去除。这2个阶段反应的最佳pH分别为11和8，去除1 mol [Cu(CN)3]2-的最佳投药量为9.35 mol Cl2的PACC；在此条件下反应43 min后，其出水中CN-和Cu2+的浓度均达到排放标准（GB21900-2008）要求。

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