Abstract:

This paper studies the influencing factors such as microwave processing time，microwave power，FeSO4 dosing amount，H2O2 dosing amount，H2O2 dosing times and pH value during coking wastewater treatment by Microwave-Fenton oxidation.The optimum process conditions are determined by the experiment：pH value of wastewater：3，FeSO4 dosing amount：300mg/L，H2O2 total dosing amount of H2O2：900mg/L，H2O2 dosing times：3，microwave power：500W，temperature：50℃，reaction time：30min.the removal rate of turbidity，chroma and COD are 97.59%，95.62% and 86.21% respectively.The wastewater after treatment is clear，and the remaining COD is 50.34mg/L.The turbidity，chroma and COD meet the requirement of industrial recirculating water standard.