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目的研究负载型TiO2光催化反应器处理微污染饮用水效能的影响因素,优化光催化反应器的设计。方法以亚甲基蓝为模拟污染物,研究在不同光源强度(8、16和28 W)、光催化镍网圆筒的直径(3、7和10 cm)、亚甲基蓝的浓度(1、5和10 mg/L)和有无反光材料时,负载型TiO2光催化反应器在120 min内对亚甲基蓝溶液的降解效能。结果在光源为16 W紫外灯,负载TiO2泡沫镍网圆筒直径为7 cm,并包覆有反光材料的条件下,负载型TiO2光催化反应器降解亚甲基蓝的效果最佳,120 min内降解率可达57.74%。结论在本实验条件下,负载型TiO2光催化反应器可以高效处理微污染饮用水,紫外光源与负载TiO2泡沫镍网的距离、反光材料等是影响光催化反应器效能的重要因素。
Objective To study the influencing factors on the performance of TiO2-loaded photocatalytic reactor for treating slightly contaminated drinking water and optimize the design of photocatalytic reactor. Methods Methylene blue as a simulated pollutant was used to study the effects of different concentrations of light sources (8, 16 and 28 W), diameters (3, 7 and 10 cm), concentrations of methylene blue (1, 5 and 10 mg / L) and the presence or absence of reflective material, the photocatalytic degradation of methylene blue solution in a loaded TiO2 photocatalytic reactor for 120 min. Results Under the condition of light source is 16 W UV lamp and the diameter of TiO2 foam nickel cylinder is 7 cm and coated with reflective material, the photocatalytic degradation of methylene blue in TiO2 photocatalyst is the best. The degradation rate in 120 min Up to 57.74%. Conclusion Under the experimental conditions, the supported TiO2 photocatalytic reactor can effectively treat the micro-polluted drinking water. The distance between the UV light source and the supported TiO2 nickel foam net and the reflective material are important factors that affect the performance of the photocatalytic reactor.