基于形稳阳极-不锈钢阴极-电Fenton处理染料废水的研究

Study on Dye Wastewater Treatment Based on Stable Anode-Stainless Steel Cathode-Electro-Fenton

采用钌铱镀层钛电极为阳极,不锈钢为阴极,电Fenton法处理实际染料废水,采用单因子分析方法考察电极材料、电解时间、电流密度、极板间距、p H值、硫酸亚铁投加量、曝气量和搅拌速度等参数对染料废水COD去除率的影响。当电解时间为2 h,电流密度为1.2 A/mm2,极板间距为2.5 cm,p H值为2.5,硫酸亚铁投加量为0.5 g/L,曝气量为2 L/min,搅拌速度为1000 r/min,COD去除率达到47.84%。对电流密度、极板间距、p H值、硫酸亚铁投加量设计正交实验,极板间距、p H和硫酸亚铁投加量对电Fenton体系去除率的影响显著,电流密度对去除率影响不显著。

The rhodium-coated titanium electrode was used as the anode and the stainless steel was used as the cathode. The Fenton process was used to treat the actual dye wastewater. The electrode material, electrolysis time, current density, plate spacing, pH, and ferrous sulthte dosage were examined by single factor analysis. The effects of parameters such as the amount of aeration, the aeration rate, and the stirring speed on the COD removal rate of the dye wastewater. When the electrolysis time is 2 h, the current density is 1.2 A/mm2 , the plate spacing is 2.5 cm, the pH value is 2.5, the ferrous sulfate dosage is 0.5 g/L, the aeration volume is 2 L/min, and the stirring speed is 1000r/min, COD removal rate reached 47.84 %. The orthogonal experiment was designed for the current density, plate spacing, ptt, and ferrous sulfate dosage. The effect of plate spacing, pH and ferrous sulfate dosage on the removal rate of the electrical Fenton system was significant, and the current density had an effect on the removal rate. Not obvious.