Fenton氧化法处理碱性大红模拟废水

Fenton Oxidation Process for the Treatment of Simulated Alkaline Red Wastewater

以碱性大红模拟废水为对象,采用Fe^2+和Fe^3+作为催化剂与H2O2构成芬顿体系进行了Fenton氧化反应,考查了pH值、反应时间、Fenton试剂配比与用量等影响因子对色度处理效果的影响。结果表明:最佳处理条件为:初始pH=3、C(Fe^2+)∶C(H2O2)=1∶5或C(Fe^3+)∶C(H2O2)=1∶5、反应时间为30 min。当碱性大红模拟废水浓度为1000 mg/L,初始H2O2浓度为5 mmol/L时,最佳条件下Fe^2+、Fe^3+芬顿体系的脱色率去除效率分别为92.30%、95.68%。对比了Fe 2+和Fe 3+作为催化剂进行Fenton氧化反应的处理效果。说明Fe^3+作为催化剂与Fe^2+效果相近。

Alkaline bright red simulated wastewater was taken as an object;Fe^2+and Fe^3+were used as catalysts to form Fenton oxidation system with H2O2;and the influence factors such as pH,reaction time,Fenton reagent proportion and dosage on chromaticity treatment effect were investigated.The results showed that the optimal treatment conditions were:initial pH=3,C(Fe^2+)∶C(H2O2)=1∶5 or C(Fe^3+)∶C(H2O2)=1∶5,and the reaction time was 30 min.When the concentration of simulated alkaline red wastewater is 1000 mg/L and the initial H2O2 concentration is 5 mmol/L,the decoloration rate of Fe^2+and Fe^3+Fenton systems under the optimal conditions is 92.30%and 95.68%respectively.The effects of Fe^2+and Fe^3+as catalysts for Fenton oxidation were compared,and the results showed that the effect of Fe^3+was similar to Fe^2+as catalyst.