A novel static spiral shear rig (SSSR) with variable screw pitch was developed to enhance the ozone–water mass transfer and the oxidative degradation of phenolic wastewater. The effects of critical operational parameters on the dissolution and mass transfer of ozone in water and the oxidative degradation rate of phenol were investigated with the proposed SSSR. Moreover, the mass transfer and oxidative degradation of phenols with the SSSR were compared to conventional static mixer (CSM) methods. The results showed that the mass transfer coefficient obtained with the SSSR is 5.33 times greater than that obtained with CSM. With the SSSR, the degradation percentage of phenolic wastewater with an initial concentration of 100 mg/L reached 97.09% within 12 min, and the reaction kinetic constant for phenol degradation obtained with the SSSR is 3.68 times higher than that obtained with the CSM. The SSSR dramatically enhances ozone dissolution and mass transfer, resulting in a higher phenol oxidative degradation percentage and a constant kinetic reaction.

中文翻译：

---

变螺距静态螺旋剪切装置强化臭氧溶解氧化处理含酚废水


开发了一种具有可变螺距的新型静态螺旋剪切装置（SSSR），以增强臭氧-水传质和酚类废水的氧化降解。利用所提出的 SSSR 研究了关键操作参数对水中臭氧溶解和传质以及苯酚氧化降解率的影响。此外，将 SSSR 的苯酚传质和氧化降解与传统静态混合器 (CSM) 方法进行了比较。结果表明，SSSR获得的传质系数是CSM获得的5.33倍。 SSSR对初始浓度为100 mg/L的含酚废水在12 min内降解率达到97.09%，SSSR降解苯酚的反应动力学常数是CSM的3.68倍。 SSSR 显着增强了臭氧溶解和传质，从而导致更高的苯酚氧化降解百分比和恒定的动力学反应。