微波Fenton耦合超声催化内电解处理垃圾压缩废水

摘要

采用微波Fenton耦合超声催化内电解工艺处理垃圾压缩废水.考察了微波升温速率、Fenton试剂投加量、超声功率、超声时间、Fe/Cu/沸石质量比、曝气量及回流比等因素对水样COD和色度去除率的影响.结果表明,保持水样pH不变,H2O2与FeSO4投加量分别为117.6mmol/L、23.4mmol/L,在170W功率下辐射100s,升温速率为12.0℃/min,COD和色度去除率分别达到了27.14％和74.15％.调节水样pH为3.0,超声功率80W,Fe-Cu-沸石质量比为6∶3∶2,在曝气量为0.2L/min下反应90min,COD和色度去除率分别为42.38％和82.60％.在回流比为0.8下,耦合工艺出水本质稳定,COD去除率均在55％以上,最高达到62.81％；色度去除率均大于83％,最高达到94.7％.%Microwave-enhanced Fenton coupled with ultrasonic catalyzed iron internal electrolysis process was examined to treat garbage compression wastewater. Various operating conditions were evaluated including microwave heating rate, Fenton reagent dosage, ultrasonic power, ultrasonic time, Fe-Cu-zeolite mass ratio, aeration rate, reflux ratio. Results show that when the wastewater has a constant pH, microwave power and time set as 170W and 100s, heating rate of 12.0t/min,the dosing quantity of FeSO4 and H2O2 were 117. 6mmol/L and 23.4mmol/L,C0D and color removal rate were achieved at 27.14% and 74. 15% respectively. Using ultrasonic catalyzed iron internal electrolysis process for the treatment of garbage compression wastewater, removal rate of COD and color were 42. 38% and 82.60% respectively when reacting under experimental conditions are as fol- ~ low: water pH adjusted to 3.0, ultrasonic power set as 80W, Fe-Cu-zeolite mass ratio is 6: 3= 2, aeration rate 0.2L/min for 90 minutes. With the reflux ratio of 0. 8, the coupling process has a stable water quality of the effluent, and high COD and color removal, average removal rate of which are 55% and 83% ,the supreme removal rate achieved at 62. 81% and 94. 7% respectively.