微波辅助Fenton试剂氧化法深度处理印染废水的研究

Research on the Advanced Treatment of the Dyeing and Printing Wastewater by the Microwave-assisted Fenton Reagent Oxidation Process

以实际印染废水排放口的出水为研究对象,考察了微波辅助Fenton试剂氧化法深度处理印染废水的效果和影响因素。结果表明,微波辅助Fenton试剂氧化法对印染废水具有良好的深度处理效果,在进水COD_（Cr）为150~160 mg/L的条件下,处理出水COD_（Cr）小于60 mg/L,达到《污水综合排放标准》（GB 8978-1996）的一级标准。在试验条件下,最佳的反应参数为：初始pH为2.5,FeSO_4·7H_2O投加量为4.4 g/L,30%H_2O_2投加量为8 g/L,微波功率为500 W,微波反应时间为5 min。微波辅助Fenton试剂氧化法的COD_（Cr）去除率可达65.1%。

Taking the actual dyeing and printing discharge water as research object, the efficiency and influencing factors in advanced treatment of the dyeing and printing wastewater by microwave-assisted Fenton reagent oxidation process was investigated. The results show that the microwave-assisted Fenton reagent oxidation process has high treatment efficiency of dyeing and printing wastewater. When the influent COD_（Cr） is 150~160 mg/L, the effluent COD_（Cr） less than 60 mg/L, which can meet the first grade standards of GB 8978-1996. Under the experiment condition, the optimal operating conditions are as follows： initial pH is 2.5, FeSO_4·7H_2O dosage is 4.4 g/L, and 30 % H_2O_2 dosage is 8g/L, microwave power is 500 W and microwave reaction time is 5min. The removal efficiency of CODCrby microwave-assisted Fenton reagent oxidation process was 65.1 %.