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电絮凝-膜分离反应器还原-絮凝-超滤一体化处理六价铬废水

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李梦琦, 杨春风, 赵凯, 孙境求, 李静, 骆丽宁, 胡承志. 电絮凝-膜分离反应器还原-絮凝-超滤一体化处理六价铬废水[J]. 环境工程学报, 2018, 12(1): 79-85. doi: 10.12030/j.cjee.201705147
引用本文: 李梦琦, 杨春风, 赵凯, 孙境求, 李静, 骆丽宁, 胡承志. 电絮凝-膜分离反应器还原-絮凝-超滤一体化处理六价铬废水[J]. 环境工程学报, 2018, 12(1): 79-85. doi: 10.12030/j.cjee.201705147
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LI Mengqi, YANG Chunfeng, ZHAO Kai, SUN Jingqiu, LI Jing, LUO Lining, HU Chengzhi. Removal of Cr(Ⅵ) from wastewater by electrocoagulation membrane reactor based on reduction,flocculation and ultrafiltration[J]. Chinese Journal of Environmental Engineering, 2018, 12(1): 79-85. doi: 10.12030/j.cjee.201705147
Citation: LI Mengqi, YANG Chunfeng, ZHAO Kai, SUN Jingqiu, LI Jing, LUO Lining, HU Chengzhi. Removal of Cr(Ⅵ) from wastewater by electrocoagulation membrane reactor based on reduction,flocculation and ultrafiltration[J]. Chinese Journal of Environmental Engineering, 2018, 12(1): 79-85. doi: 10.12030/j.cjee.201705147
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电絮凝-膜分离反应器还原-絮凝-超滤一体化处理六价铬废水

  • 1.

    河北工业大学土木与交通学院,天津 300401

  • 2.

    中国科学院生态环境研究中心,中国科学院饮用水科学与技术重点实验室,北京 100085

  • 3.

    中国科学院大学,北京 100049

  • 基金项目:

    国家自然科学基金资助项目(51678556)

Removal of Cr(Ⅵ) from wastewater by electrocoagulation membrane reactor based on reduction,flocculation and ultrafiltration

  • 1.

    School of Civil and Transportation, Hebei University of Technology, Tianjin 300401,China

  • 2.

    Key Laboratory of Drinking Water Science and Technology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China

  • 3.

    University of Chinese Academy of Sciences, Beijing 100049, China

  • Fund Project:

  • 摘要: 采用电絮凝-膜分离反应器(electrocoagulation membrane reactor,ECMR)对含铬废水进行研究。讨论了电化学参数和水质条件对Cr(Ⅵ)去除的影响,对比了ECMR和EC-UF抑制膜污染的作用机制。结果表明,在电流密度J=55 A·m-2、初始浓度C(Cr6+)=40 mg·L-1、初始pH=3、电解时间60 min、水力停留时间20 min条件下,ECMR出水总Cr去除率达到99.2%,废水中Cr(Ⅵ)的去除率达到99.4%。同时发现ECMR膜通量优于EC-UF,通量高出近15%,ECMR装置不但能够充分利用电絮凝中的电场和气浮作用,进一步强化减缓膜污染,而且可以使装置系统更加紧凑,节省占地空间。
    Abstract: Recently, chromium (Cr) removal via coagulation has attracted great attention. Cr(Ⅵ) removal by electrocoagulation membrane reactor (ECMR) was investigated. The performance of Cr(Ⅵ) removal under various electrochemical parameters and solution conditions were evaluated. Besides, the mechanism of antifouling by ECMR and EC-UF were compared. The results show that, when the current density is J=55 A·m-2, electrolysis time of 60 min and hydraulic retention time of 20 min, the Cr(Ⅵ) and total chromium removal reached 99.4% and 99.2% in the solution of initial pH=3, C(Cr6+)=40 mg·L-1 respectively. The flux of ECMR shows an enhancement by 15% than that of EC-UF, indicating there exists a powerful antifouling effect under electric conditions.The ECMR device can not only make full use of the electric field and air floaing in the electrocogulation, but also further effectively slow down the membrane fouling.Moreover, the device can make the system more compact and save space.
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  • 刊出日期:  2018-01-14

电絮凝-膜分离反应器还原-絮凝-超滤一体化处理六价铬废水

  • 1. 河北工业大学土木与交通学院,天津 300401
  • 2. 中国科学院生态环境研究中心,中国科学院饮用水科学与技术重点实验室,北京 100085
  • 3. 中国科学院大学,北京 100049
基金项目:

国家自然科学基金资助项目(51678556)

摘要: 采用电絮凝-膜分离反应器(electrocoagulation membrane reactor,ECMR)对含铬废水进行研究。讨论了电化学参数和水质条件对Cr(Ⅵ)去除的影响,对比了ECMR和EC-UF抑制膜污染的作用机制。结果表明,在电流密度J=55 A·m-2、初始浓度C(Cr6+)=40 mg·L-1、初始pH=3、电解时间60 min、水力停留时间20 min条件下,ECMR出水总Cr去除率达到99.2%,废水中Cr(Ⅵ)的去除率达到99.4%。同时发现ECMR膜通量优于EC-UF,通量高出近15%,ECMR装置不但能够充分利用电絮凝中的电场和气浮作用,进一步强化减缓膜污染,而且可以使装置系统更加紧凑,节省占地空间。

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