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双极膜电渗析法从含铍碱液中回收碱的研究

作者：张玉凤¹，郭庆²，曾娟¹，余侃萍¹，雷湘¹，刘孟¹

单位： 1. 长沙矿冶研究院有限责任公司，长沙 410012； 2. 五矿铍业股份有限公司，长沙 410030

关键词：铍；碱液；双极膜电渗析；碱回收

DOI号： 10.16159/j.cnki.issn1007-8924.2026.01.012

分类号： TQ028； X703

出版年,卷(期):页码： 2026,46(1):120-128

摘要：

含铍碱液是萃取法生产工业氢氧化铍过程所产生的生产废水，含有高浓度的氢氧化钠和铍元素等有价组分。为回收含铍碱液中的碱、提高有价组分铍的利用率，采用双极膜电渗析处理含铍碱液，并以自制铍专性吸附剂回收处理后含铍铝溶液中的铍。本研究考察了双极膜电渗析的运行时间、碱浓度、浓缩比等实验条件对回收碱的影响，获得最佳的工艺条件。结果表明，当含铍碱液的碱浓度为0.7 mol/L，浓缩比为2∶1时，回收的碱质量浓度可达49.22 g/L，碱的回收率为92.42%。

Beryllium-containing alkali solution is production wastewater generated during the extraction method for producing industrial beryllium hydroxide, which contains high concentrations of valuable components such as sodium hydroxide and beryllium elements. In order to recycle alkali and beryllium, bipolar membrane electrodialysis was used to treat beryllium-containing alkali solution, and a self-prepared adsorbent for beryllium was used to recover beryllium from the solution containing beryllium and aluminum after treatment. In this paper, the running time, alkali concentration and concentration ratio of bipolar membrane electrodialysis treatment process was investigated. The results showed that when the alkali concentration of beryllium-containing alkali solution was 0.7 mol/L and concentration ratio was 2∶1, the recovered alkali concentration could reach 49.22 g/L, and alkali recovery rate reached 92.42%.

基金项目：

国家重点研发计划（2021YFC2902302）

作者简介：

张玉凤（1990-），女，湖南株洲人，工程师，主要从事废水处理及回用技术研究

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