H2O2-固载型TiO2光催化对城市污水消毒作用研究

摘要

以泡沫镍作为载体,利用电沉积技术将纳米TiO2负载在泡沫镍上,制成固载型TiO2光催化反应器,在光催化反应器中加入H2O2,研究H2O2-固载型TiO2光催化反应系统对城市污水消毒效果。试验表明,固载型TiO2光催化反应中加入10 ppm H2O2,能大大提高紫外消毒效果,降低原水浊度对紫外消毒系统的影响,同时显著减少紫外消毒系统出水光复活现象。H2O2-固载型TiO2光催化反应系统,对降低紫外消毒投资和运行成本,提高紫外消毒效果稳定性,促进城市污水紫外消毒技术的推广具有重要意义。%TiO2 was loaded on its carrier nickel foam by electrodeposition to combined with 10ppm hydrogen peroxide so as to construct H2O2-TiO2 photocatalytic reactor.The disinfection effect of H2O2-photocatalytic reactor is better than photocatalytic reactor and UV.The influence of turbidity on inactivation and photo-reactivation of some inactivated bacteria can be reduced obviously in H2O2-photocatalytic reactor.The study shows that H2O2-photocatalytic react can promote the inactivation effect,reduce UV dosage and influence of turbidity on inactivation.The study of the H2O2-photocatalytic reactor is of great significance for saving investment,operation cost and development of UV disinfection.