微波无极紫外点阵光催化氧化降解酸性蓝BGA的研究

Study on the degradation of acidic blue BGA by photocatalytic oxidation based on microwave electrodeless UV lattice

以不规则石英片作为TiO2光催化剂的载体,与微波无极紫外灯形成点阵光催化氧化降解酸性蓝BGA。通过比较不同反应体系的处理效果,验证了微波无极紫外点阵光催化氧化法的优越性。实验结果表明,当反应时间为60 min、H2O2投加量2 mL/L、酸性蓝BGA初始质量浓度300 mg/L、曝气量0.15 L/min时,其对酸性蓝BGA废水的TOC去除率和脱色率分别达到42.74%和90.17%。在降解的过程中它受pH影响较大,采用分段控制pH的方法,能够进一步提高脱色效果。

Irregular quartz flat has been used as TiO2 photocatalyst carrier, and formed lattice photocatalytic oxidation degradation acidic blue BGA with microwave electrodeless UV lamp. Through comparative experiments,the superiority of photocatalytic oxidation based on microwave electrodeless UV lattice is validated. The results show that when the reaction time is 60 min, H2O2 dosage 2 mL/L, initial concentration of dyestuff 300 mg/L, aerobic volume 0.15 Umin, the TOC removal rate and decoloration rate of acidic blue BGA are 42.74% and 90.17% respectively. The key factor having influence on the degradation of the photocatalytic oxidation is pH. Subsection control is used for controlling the pH, and further improvement of decoloration is obtained.