双氧水助光催化降解直接大红染料废水的研究

利用溶胶-凝胶法制备二氧化钛薄膜,研究加入微量H2O2协助光催化降解直接大红废水的可行性。分别讨论不同氧化工艺、H2O2投加量和反应时间、pH值、废水的初始浓度对脱色率的影响.结果表明,pH值较低、H2O2投加量为3 mL/L、废水溶液初始浓度较低时有较好的降解效果.

A study of photocatalytic degradation of direct scarlet-dye polluted wastewater with hydrogen peroxide

By using titanium dioxide prepared with solgel processing,the feasibility of photocatalytic degradation of direct scarlet-dye polluted wastewater with the help of a minute amount of H2O2 was investigated.The influence of different oxidation processing,added amount and reaction time-period of H2O2,its pH-value,and initial concentration of wastewater on the decolorizing rate was discussed,respectively.It was shown by the result that the degradation effect would be better for the wastewater solution with lower initial concentration when the pH-value was lower and the added amount of H2O2 was 3 mL/L.