基于硫酸根自由基的高级氧化法处理染料废水的研究

Study on Dye Wastewater Treated with the Advanced Oxidation Technology Based on Sulfate Radical

本文对紫外光活化过硫酸钾技术处理亚甲基蓝模拟染料废水进行了研究。结果表明,紫外光/过硫酸钾对于亚甲基蓝降解有明显的促进效果,在过硫酸钾浓度为50 mmol·L^(-1)、亚甲基蓝初始浓度为50 mg·L^(-1)、反应温度为40℃、光照时间为10 min的条件下,亚甲基蓝降解率最大,为95.03%。硫酸根对染料废水降解有少许的抑制作用,亚铁离子在0.6 mmol·L^(-1)以下的浓度范围内对降解有促进作用。

The degradation of methylene blue simulated dye wastewater based on sodium persulfate activated by UV was studied. The results showed that UV/K2S2O8 had an obvious promoting effect upon the degradation of methylene blue. On condition that the concentration of K2S2O8 was 50 mmol.L-1, the initial concentration of methylene blue was 50 mmol.L-1, The reaction temperature of 40 of, and irradiation time under ultraviolet light was 10 minutes, the best decolorization rate could be up to 95.03%. Sulfate had a little inhibition to the degradation of dye wastewater, however, Fe2＋ had promoting effect under the concentration of 0.6 mmol.L-1.