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| Experimental study on comprehensive recovery and treatment of tailings slurry containing cyanide |
| Received:August 10, 2017 Revised:September 13, 2017 |
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| DOI： |
| KeyWord:tailings slurry containing cyanide; acid regulation -air stripping process; neutralization-ozonation treatment;total cyanide stripping rate |
| Author | Institution |
| ZOU Jia-lin |
辽宁工程技术大学 环境科学与工程学院 |
| WANG Dao-han |
辽宁工程技术大学 环境科学与工程学院 |
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| Abstract: |
| The treatment of the tailings slurry containing cyanide from a gold smelting company in Northeast China by combined technology of acid regulation -air stripping process and neutralization-ozonation treatment is investigated. The optimal technological parameters for acid regulation-air stripping process are amount of sulfuric acid 18mL/L, reaction temperature 38℃, Gas-liquid ratio 200:1,reaction time 2.0h, Total cyanide stripping rate are above 95%.The optimal technological parameters for the neutralization-ozonation are pH 7.5~8.5,amount of lime milk 103.75~126.67mL/L, amount of ozone 4.0g/(L·h). The effluent for treated wastewater could meet Grade I of discharge standard of GB8978-1996. |
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