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- Title
高压脉冲放电降解废水中的盐酸四环素.
- Authors
董冰岩; 殷平平; 李贞栋; 王佩祥; 罗婷
- Abstract
In order to investigate the effects of pulse voltage, pulse frequency, aeration rate and initial conductivity of solution on tetracycline hydrochloride (TCH) removal rate, a self-made multi-needle-plate electro-discharge bench-scale reactor was adopted to remove TCH from the wastewater. The experiment with the reactor was conducted involving the analysis of total organic carbon of the wastewater before and after the electro-dischrge treatment, and the study on the degra⁃ dation mechanism of TCH molecule. As a result, the experiment showed that in the case where the TCH-consisting anti⁃ biotic wastewater was treated by the electro-discharge reactor for 60 min under the condition, i.e., pulse voltage was 24 kV, the pulse frequency 60 Hz, the electrode spacing 7 mm, the air flow 2.5 L/min, the initial concentration 100 mg/L and the initial conductivity of the solution 200 μS/cm, the removal rate could attained up to 87.9% with the mineralization rate of 47.3%. It was also found that in the electro-discharging process, the removal rate of TCH decreased with the increase of its initial concentration and increase with the increase of pulse voltage; as the discharge frequency, needle-plate spac⁃ ing, air flow and conductivity increased, TCH removal rate increased first and declined later; and it was hydroxyl radical that played a key role in the degradation of TCH. In conclusion, the completed experiment with the application of highvoltage pulse-discharge plasma technology provided a potential and effective approach to the treatment of TCH-consisting wastewater.
- Subjects
AIR flow; HYDROXYL group; PSEUDOPOTENTIAL method; WASTEWATER treatment; SEWAGE; UPFLOW anaerobic sludge blanket reactors
- Publication
Environmental Science & Technology (10036504), 2022, Vol 45, Issue 7, p129
- ISSN
1003-6504
- Publication type
Article
- DOI
10.19672/j.cnki.1003-6504.0282.22.338