An intensified ozonation system in a tank reactor with foam block stirrer: Synthetic textile wastewater treatment and mass transfer modeling
| Autor: | Xueqin Zhang, Jing Ye, Zhang Na, Meitian Xiao, Yucheng Yang, Shi‐Ying Yang, Yi Ouyang, Yayan Huang, Shang-Sheng Zeng, Le Sang |
|---|---|
| Rok vydání: | 2021 |
| Předmět: |
Mass transfer coefficient
Ozone Materials science Textile business.industry Filtration and Separation 02 engineering and technology 021001 nanoscience & nanotechnology Analytical Chemistry chemistry.chemical_compound 020401 chemical engineering chemistry Wastewater Scientific method Mass transfer Degradation (geology) Sewage treatment 0204 chemical engineering 0210 nano-technology Process engineering business |
| Zdroj: | Separation and Purification Technology. 257:117909 |
| ISSN: | 1383-5866 |
| DOI: | 10.1016/j.seppur.2020.117909 |
| Popis: | A novel multiphase tank reactor with foam block stirrer, also called rotating foam stirrer reactor (RFSR), was used to intensify ozone mass transfer and oxidation of synthetic textile wastewater processes for the first time. Results show that the RSFR can improve the ozone mass transfer process by adjusting operation conditions and gas hydromechanics. In order to predict the volumetric mass transfer coefficient, a set of correlation was developed within ±15% deviation. Further, based on an Acid Red B (ARB) solution used as simulated synthetic textile wastewater, it was found that the removal efficiency was improved by intensifying ozone mass transfer process, and changing operation conditions can promote the transformation of the ozone oxidation path to an indirect reaction way. Finally, results show that the Fe-Co oxides coated on the foam block stirrer can further intensify the degradation processes in the ARB solution. This study gives a fundamental understanding of the intensification mechanism of the RFSR and shows the promising prospect of an RFSR used in in the wastewater treatment. |
| Databáze: | OpenAIRE |
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