工艺参数对电去离子技术浓缩分离含镍离子溶液的影响

王玉珍 1; 2; 王建友 1; 吴志强 1; 卢会霞 1

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工艺参数对电去离子技术浓缩分离含镍离子溶液的影响

更新时间：2025-05-08

- 工艺参数对电去离子技术浓缩分离含镍离子溶液的影响
- Influences of Operation Parameters on Concentration and Separation of Nickel-Containing Solution by Electrodeionization Process
- 西安交通大学学报 2012年46卷第5期页码：114-119
- 作者机构：
  
  1. 南开大学环境科学与工程学院,天津,300071
  2. 西安交通大学能源与动力工程学院,西安,710049
- 作者简介：
- 基金信息：
  
  : 2011-08-29. 作者简介: 王玉珍(1985-),女,硕士生;王建友(通信作者),男,教授,博士生导师. 基金项目: 国家高技术研究发展计划资助项目(2007AA06Z330);天津市科技支撑计划重点项目(08ZCKFSH01800)
- DOI：
  中图分类号： TQ028.8
- 网络首发：2012-05-10，
  
  纸质出版：2012
- 稿件说明：
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王玉珍 1, 2, 王建友 1, 等. 工艺参数对电去离子技术浓缩分离含镍离子溶液的影响[J]. 西安交通大学学报, 2012,46(5):114-119.

Influences of Operation Parameters on Concentration and Separation of Nickel-Containing Solution by Electrodeionization Process[J]. 2012, 46(5): 114-119.
王玉珍 1, 2, 王建友 1, 等. 工艺参数对电去离子技术浓缩分离含镍离子溶液的影响[J]. 西安交通大学学报, 2012,46(5):114-119. DOI：

Influences of Operation Parameters on Concentration and Separation of Nickel-Containing Solution by Electrodeionization Process[J]. 2012, 46(5): 114-119. DOI：

摘要

采用浓缩室填充树脂的强化电去离子(EDI)对含Ni

溶液进行了浓缩分离

从中研究了工作电压、淡化室隔板厚度、原水浓度及组分对EDI分离性能的影响.结果表明

在15 V电压下

EDI以增强传质模式运行可在较低能耗下获得高质量的出水; 电压增大使淡水室内发生水解离而产生结垢

影响EDI的稳定运行.淡化室隔板由3 mm增至5 mm时

膜堆电阻增大

分离效率降低.对于含Ni

为50 mg·L

-1

的NiSO

原水

在优化条件下

浓、淡水出水中Ni

浓度分别为11 031和2.78 mg·L

-1

的浓缩倍数达223.对于含Ni

和Cu

各25 mg·L

-1

的双组分原水

EDI对Cu

有更好的浓缩效果.实验结束时

浓水出水中Ni

、Cu

浓度分别为3 258和4 690 mg·L

-1

浓缩倍数分别为130和187; 淡水出水中Ni

及Cu

浓度分别为4.71和3.71 mg·L

-1

Abstract

The enhanced electrodeionization(EDI)in the dilute and concentrate chambers filled with ion exchanges resins was adopted for the concentration and separation of nickel-containing solution. The influences of operation voltage

partition thickness of the dilute chamber

feed concentration and composition on separation performance were examined. The results show that the EDI process operating under the enhanced mass transfer mode at applied stack voltage of 15V could ensure high quality effluent with lower energy consumption. As the voltage increased

significant water decomposition occurred in the dilute compartments

resulting in scaling problem and unstable operation. When the partition thickness of dilute chambers increased from 3mm to 5mm

the separation performance of the EDI process decreased as the stack resistance increased. Under the optimized conditions

for the Ni

feed concentration of 50 mg·L

-1

the Ni

concentration of the outlet concentrate and dilute was 11 131 and 2.78 mg·L

-1

respectively

i.e.

the concentration ratio of higher than 223. However

when the feed solution contained Ni

and Cu

with the same concentration of 25 mg·L

-1

the concentration effect of Cu

was better than that of Ni

. At the end of the experiment

the concentration of Ni

and Cu

in the concentrate effluent was 3 258 and 4 690mg·L

-1

while that in the dilute effluent was 4.71 and 3.71 mg·L

-1

respectively.

关键词

Keywords

references

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