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| Study on Treatment of Wastewater after Silver Extraction from Waste Plasma Screen by Hydrometallurgy |
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Received:June 13, 2016
Revised:June 14, 2016
Accepted:June 20, 2016
Published Online:September 20, 2016
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| DOI：doi：10.3969/j.issn.1007-7545.2016.10.018 |
| KeyWord:plasma display panel; hydrometallurgy; neutralization; flocculation; evaporation |
| Author | Institution |
| CHEN Wei |
昆明理工大学环境科学与工程学院 |
| Ning Ping |
昆明理工大学环境科学与工程学院 |
| Yuan Cui-yu |
湖南有色金属研究院 |
| OUYANG Kun |
湖南有色金属研究院 |
| WAN Si |
湖南有色金属研究院 |
| WANG Bing |
湖南有色金属研究院 |
| ZHU An-ling |
湖南有色金属研究院 |
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| Abstract: |
| Waste water from silver extraction by hydrometallurgy from waste plasma display panels was treated by neutralization oxidation flocculation, evaporation, and neutralization flocculation evaporation, respectively. The results show that neutralization flocculation evaporating method has high removal efficiency for heavy metals and COD, and can also achieve basic equilibrium in wastewater treatment and recycling cost value by recovery of nitric acid and sale of neutralization residues. Moreover, condensed water can be recycled in production process with no effect on production index. |
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