|
| Tungsten Smelting COD Wastewater Catalyzed by Different Catalyst Support Catalytic Oxidation Technology |
|
Received:March 12, 2020
Revised:March 17, 2020
Accepted:March 19, 2020
Published Online:June 20, 2020
|
| View Full Text View/Add Comment Download reader |
| DOI：doi：10.3969/j.issn.1007-7545.2020.07.019 |
| KeyWord:ozone; catalytic oxidation; catalyst carrier; tungsten hydrometallurgical wastewater; COD |
| Author | Institution |
| Lai Lanping |
赣州有色冶金研究所 |
| Chen Houxing |
赣州有色冶金研究所 |
| Chen Dongying |
赣州有色冶金研究所 |
| Wang Ming |
赣州有色冶金研究所 |
| Zhou Jieying |
赣州有色冶金研究所 |
|
| Hits: 1612 |
| Download times: 2129 |
| Abstract: |
| Fe-Ce/activated alumina, activated carbon, ceramsite, zeolite and kaolinite catalysts were prepared by impregnation calcination method and applied for catalytic ozonation of tungsten hydrometallurgical wastewater. Based on single factor tests and applying COD removal rate as evaluation index, effects of five factors including roasting temperature, ozone dosage, pH value of wastewater, catalyst dosage, reaction time and reaction numbers were investigated. The results show that COD removal rate is 80.9%, 74.2%, 69.5%, 85.9% and 66.6%, respectively with ozone dosage of 700 mg/L under the optimal conditions. In terms of COD removal efficiency, the sequence is zeolite > activated alumina > activated carbon > ceramsite > kaolin, and in terms of price and COD removal rate, the sequence is zeolite activated alumina > zeolite > activated carbon > ceramsite > kaolin. |
| Close |
|
|
|