电解电压对电多相催化法去除偶氮染料废水的影响

研究了电解电压对电多相催化法处理染料废水的影响。结果表明:在模拟染料废水质量浓度为300mg/L,pH为6.8,反应时间为1 h,极板间距为6 cm,曝气量为0.08 m~3/h,Na_2SO_4投加质量浓度为800 mg/L的条件下,染料脱色率最高可达到94.36%,COD_(Cr)最大去除率为43.6%。电解电压是电多相催化氧化法中的重要影响因素,合理选择电解电压对于提高电流效率、降低能耗、加快有机物去除率尤为重要。

Study on the infIuences of eIectroIytic voItage on the removaI of azo dye from wastewater by eIectro-heterogeneous cataIysis method

The influences of electrolytic voltage on the treatment of dye wastewater by electro-heterogeneous catalysis method have been studied. Experimental results show that under the following conditions:the simulated dye waste-water concentration is 300 mg/L,pH 6.8,reaction time 1 h,polar plate distance 6 cm,aeration rate 0.08 m3/h,and Na2SO4 dosage 800 mg/L,the maximum dye decolorization rate can reach 94.36%,and the maximum CODCr removing rate can reach 43.6%. The important influential factor of electro-heterogeneous catalytic oxidation method is elec-trolytic voltage. Selecting electrolytic voltage reasonably is especially important to the improvement of current effi-ciency,reduction of energy consumption,and speeding up the removing rate of organic matter.