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 s...