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| Study on the production of high acid-alkali concentration from high-salt wastewater of tungsten smelting |
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Received:March 11, 2024
Revised:May 23, 2024
Accepted:June 05, 2024
Published Online:March 24, 2025
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| DOI： |
| KeyWord:high salt wastewater; bipolar membrane electrodialysis; membrane distillation; tungsten smelting; acid-alkali concentration |
| Author | Institution |
| WANG Songlin |
Jiangxi Xiushui Ganbei Tungsten Industry Co Ltd |
| LEI Chunpeng |
Jiangxi Xiushui Ganbei Tungsten Industry Co Ltd |
| LIAO Dejin |
Cha Tungsten and Hightec Material CO LTD |
| ZOU Yuantao |
Jiangxi Xiushui Ganbei Tungsten Industry Co Ltd |
| GAO Yang |
Datang Environment Industry Group Co Ltd |
| TAO Liming |
Central South University |
| LU Yongqi |
Jiangxi Xiushui Ganbei Tungsten Industry Co Ltd |
| WANG Jianjun |
Central South University |
| GAO Zhiyong |
Central South University |
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| Abstract: |
| In view of the characteristics of high-salt content and complex components in tungsten smelting plant wastewater, this study proposed a treatment method of bipolar membrane electrodialysis-membrane distillation to realize its recycling. The 10 t pilot test results showed that high-salt multi-component tungsten smelting wastewater could be treated with membranes to obtain hydrochloric acid solution with a concentration greater than 206 g/L and sodium hydroxide solution with a concentration of 3380 g/L. The comprehensive utilization rate of NaCl was 80.3%. High-concentration acid or alkaline solutions could be recycled and used in tungsten smelting process of alkaline cooking and acid decomposition. This membrane treatment process could realize the utilization of 85% of high-salt multi-component tungsten smelting wastewater resources. It provided technical support for completely solving the problem of non-pollution of tungsten smelting wastewater. |
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