In recent years,advanced oxidation water treatment technology has attracted the attention of many environmental engineering researchers and technicians,among which the electric Fenton technology has the characteristics of simple operation,safe and efficient experiment,and has received extensive attention.The amount of iron salt dosage is an important factor affecting the efficiency of electric Fenton,and excessive dosing of iron salt may reduce the efficiency of the system,and produce a large amount of iron sludge,which will increase the treatment cost.Optimizing the amount of iron salt dosage in the electric Fenton system is of great significance in engineering application.In this paper,an electric Fenton system is constructed by a combination of graphite rod(anode)and carbon felt(cathode),and rhodamine B dye is used as the degradation object to study the optimal iron salt dosage under the control of aeration and current density.The results show that under the reaction conditions of 40～120 mL/min aeration rate,20～50 mA current,and the initial concentration of rhodamine B is 25～100 mg/L,the optimal ferrous dosage for rhodamine B removal is 0.5 mmol/L.The results can be used to assist in other research and applications of electric Fenton.
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