【摘要】 以超重力旋转填充床（RPB）为反应装置,研究了O₃/UV工艺处理罗丹明B染料废水的效果。考察了旋转填充床转速、液体流量、催化剂P25质量浓度、臭氧质量浓度等因素对脱色率和COD去除率的影响。结果表明,随着旋转填充床转速、液体循环量、催化剂P25质量浓度以及臭氧质量浓度的增加,罗丹明B废水的处理效果增加;当温度为25℃、液体体积为2 L、RPB转速为1 000 r/min、废水pH为4、气体体积流量为150 L/h、液体循环量为30 L/h、臭氧质量浓度为35 mg/L、催化剂P25质量浓度为400 mg/L时,罗丹明B废水经处理20 min后脱色率和COD去除率分别可达100%和40%。更多还原

【Abstract】 The treatment effect of Rhodamine B dye wastewater by the O₃/UV process is studied in a rotating packed bed（ RPB）. Influences of RPB rotating speed,liquid circulating flow rate,dosage of P25 catalyst,ozone（ O₃）concentration on the decolorization and COD removal efficiency are investigated. Study results show that the treatment effect of Rhodamine B wastewater increases with the increase of RPB rotating speed,liquid circulating flow rate,catalyst P25 dosage and ozone concentration.The decolorization and COD removal efficiency reach 100% and 40%,respectively after the wastewater has been treated for 20 minutes at 25℃,a RPB rotating speed of 1,000 rpm,a liquid flow rate of 30 L·h^-1,a pH of 4,a gas flow rate of 150 L·h^-1,an O₃ concentration of 35 mg·L-1 and a catalyst P25 dosage of 400 mg·L-1.更多还原