|
| Experiment on synthetical treatment technology of cyanide wastewater |
|
Received:November 03, 2015
Revised:July 06, 2016
Accepted:November 06, 2015
Published Online:October 21, 2016
|
| View Full Text View/Add Comment Download reader |
| DOI： |
| KeyWord:acidification method; remove; alkali absorption; oxidation depth; complete sets of equipment. |
| Author | Institution |
| SUN Yan-wen |
Beijing General Research Institute of Mining Metallurgy |
| SUN Liu-gen |
Beijing General Research Institute of Mining Metallurgy |
| LIANG Dong-dong |
Beijing General Research Institute of Mining Metallurgy |
| XU Xiao-hui |
Beijing General Research Institute of Mining Metallurgy |
|
| Hits: 4029 |
| Download times: 2284 |
| Abstract: |
| There is a problem that Cyanide waste water treatment cost is high at enterprises, a new type of efficient acidification-blowing off-absorption equipment was designed to solve it, with a large number of trials. Result shows: the optimum technological condition, pH 2.5, 30 min time, temperature 30 ℃ above, waste water circulation flow 1 m3/h, air volume of 900 m3/h, absorbing liquid 20% NaOH concentration, temperature 10 ℃, The removing rate of HCN is above 99%, the absorption rate is more than 96%, acidification residual liquid CN- < 3.5 mg/L, with a much lower concentration and shorten operation time. The residual liquid waste liquid after using SO2 / Air deep oxidation of CN- < 0.1 mg/L, to meet the emissions and recycling standards. Complete sets of equipment with less investment, high efficiency, low production cost, simple operation, can provide greater convenience for gold production enterprises. |
| Close |
|
|
|