TiO2/膨润土催化剂降解工业废水研究

以改性的新疆乌兰陵格膨润土、钛酸丁酯和四氯化钛为原料，制备PEG改性TiO₂/膨润土催化剂和TiO₂/柱撑膨润土催化剂。将两种催化剂分别应用于新疆某毛纺厂印染废水、甲基橙模拟印染废水、某石化废水进行降解研究。研究结果：PEG改性TiO₂/膨润土催化剂对甲基橙模拟印染废水的最高降解率2 h达87.67%，TiO₂/柱撑膨润土催化剂对某石化废水的最高降解率2 h达78.12%。而两者对新疆某毛纺厂废水的最高降解率2 h内分别为44.15%,40.53%。还对PEG改性TiO₂/膨润土催化剂的回收利用以及毛纺厂印染废水的二级降解进行了初探。

Study on TiO2 /Bentonite Catalyst to Treat Industrial Wastewater

Taking the modified bentonite, n-butyl titanate and titanium tetrachloride from Xinjiang Wulanlingge as the raw material, PEG modified TiO₂/bentonite catalyst and TiO₂/pillared bentonite catalyst are prepared.Then these two catalysts are respectively applied to treat dyeing wastewater from a Xinjiang woolen mill, methylorange simulated wastewater and petrochemical wastewater.The research showed that PEG modified TiO₂/bentonite photocatalyst realized a maximum degradation rate to 87.67% at 2 h on methylorange simulated wastewater, and TiO₂/ pillared bentonite photocatalyst realized the highest degradation rate to 78.12% at on the degradation of petrochemical wastewater.Meanwhile, both above mentioned can reach the highest degeneration rates of 44.15% and 40.53% respectively at 2 h on Xinjiang woolen mill waste water.The recycling recovery on the PEG modified TiO₂/bentonite catalyst and the secondary degradation of woolen mill wastewater were also studied.