A NOVEL NaClO2-UV/O-3 TREATING ACID TURQUOISE BLUE A IN AQUEOUS SOLUTION: DYNAMICS MODEL AND SYNERGISTIC EFFECT

作者：Shen, Yongjun^*; Hu, Yuanyuan; Xu, Qihui; Zhu, Peng; Fan, Kaixia; Sun, Yao

来源：Fresenius Environmental Bulletin, 2017, 26(10): 5700-5706.

• NaClO2-UV/O-3
• Acid Turquoise Blue A
• dynamics
• synergistic effect

The process sodium chlorite-ultraviolet/ozone (NaClO2/UV-O-3) is utilized to deal with simulated wastewater of Acid Turquoise Blue A (ATBA). It is a brand-new mode which combined the advantages of both chlorine dioxide (ClO2) and O-3. It achieves strong degradation effect in alkaline conditions. Commonly, it takes 15 minutes when the removal rate goes higher than 95%, but it only required about 3 minutes under the best operating conditions (PH=10, 150 mg/L dosing quantity of NaClO2, 18 W UV intensity, 36 L/h O-3 flux, room temperature) when simulated wastewater of ATBA (25 mg/L, 1L) was treated. The degradation reaction was consistent with first-order kinetics model, and instant dynamics equation could be established to determine the values of its apparent rate constant k(obs). The pH had maximal influence on the kinetics model that had been discussed under two conditions of pH >5.8 and pH<5.8. When pH=10, the k(obs) was maximum which was 1.6525. The synergistic co-factor E was obviously about 4.

• 出版日期2017
• 单位南通大学