The proper dosage of TiO 2 is 5 g/L for Ciba color and Direct Scarlet wastewaters with the decolorization rates of above 85% under ultraviolet irradiation of 60 min.

• 对于汽巴克染绿和直接大红染料溶液 ,适宜的TiO2 添加量均为 5g/L ,紫外灯照射 6 0min ,其脱色率大于 85%25。