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| Experimental Research on High-arsenic Wastewater from One Gold Smelting |
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Received:December 03, 2014
Revised:December 03, 2014
Accepted:December 05, 2014
Published Online:August 10, 2015
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| DOI： |
| KeyWord:gold smelting; high-arsenic wastewater;sulfide precipitation; neutralization precipitation; |
| Author | Institution |
| HUANG Hai-hui |
Beijing General Research Institute of Mining Metallurgy |
| WANG Yun |
Beijing General Research Institute of Mining Metallurgy |
| XU Xiao-hui |
Beijing General Research Institute of Mining Metallurgy |
| GUO Chi-hao |
Beijing General Research Institute of Mining Metallurgy |
| CHANG Yao-chao |
Beijing General Research Institute of Mining Metallurgy |
| SUN Liu-gen |
Beijing General Research Institute of Mining Metallurgy |
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| Abstract: |
| Laboratory studies on the treatment of high-arsenic wastewater from a gold smelter were performed with sulfide precipitation and neutralization precipitation process, respectively. Main influence factors of reagent dosage and acidity, etc. were investigated. Results showed that above 99.9% of arsenic can be removed with one stage treatment of sulfide precipitation or neutralization precipitation process, and after second stage treatment of iron salt sedimentation, arsenic concentration in the wastewater can be reduced below 0.5mg/l. Comparative analysis of two processes on the factors including treatment effects, costs, residue output and operation environment, etc. indicated that neutralization precipitation process assumes better economic and environmental benefits for industrial application. |
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