【摘要】 研究了超声波内环流气升式反应器用于去除水中苯酚的效果与性能。探讨了反应器的表观气速、介质温度对超声-H2O2与超声-H2O2-CuO两种体系对苯酚去除效果的影响。试验结果表明,超声-H2O2-CuO体系对苯酚的去除效果优于超声-H2O2体系,且更能发挥超声与气升式反应器具有流化效果的协同作用。在处理液体积为1000 mL、苯酚初始质量浓度为25 mg／L、CuO加量为1 mg／mL、H2O2加量为300 mg／L、声强为4.97 W／cm2的条件下,两种体系苯酚的去除率均随反应器的表观气速减小而增大;介质温度从20℃上升到50℃时,超声-H2O2体系苯酚去除率随着温度升高而降低,而超声-H2O2-CuO体系苯酚去除率随着温度升高而增大;反应器中超声-H2O2与超声-H2O2-CuO体系对苯酚的去除过程均符合拟一级反应。更多还原

【Abstract】 The performance and efficiency of ultrasonic internal loop airlift reactor in the treatment of phenol water were studied. The effects of gas velocity,medium temperature on phenol removal in ultrasound - HaO2 and ultrasound- H2O2 - CuO systems were explored. The results show that the effect of ultrasound - H2O2 - CuO system on phenol removal is better than that of ultrasound - H2O2 system;airlift reactor and ultrasound - H2O2 -CuO system have better synergistic effects. Under the conditions of aqueous solution 1000 mL, phenol initialmass concentration 25 mg/L,CuO dosage 1 mg/L,H2O2 dosage 300 mg/L and ultrasound intensity 4.97 W/ cm2, the removal rate of phenol increases with gas velocity decreasing. When the temperature increases from 20℃ to 50℃ , the removal rate of phenol in ultrasound - H2O2 system decreases, but in ultrasound - H2O2 - CuO system it increases with temperature increasing. The phenol removal in ultrasound - H2O2 system and ultrasound - H2O2 - CuO system both follow pseudo - first - order reaction.更多还原