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This test successfully prepared better morphology, was hollow, tube end opening anatase TiO 2 nanotubes whose diameter 5-7nm, 1nm thickness around long 200-300nm, more than surface area of ??276m2 · g-1. Under the same conditions as the target of landfill leachate, 60min when O 3 / UV / TiO 2 nanotubes than O 3 / UV/P25 and O 3 / UV COD removal were increased by 20.83% and 32.65%. In the light catalytic ozonation process, TNTs optimum calcination temperature was 400 ℃. O 3 / UV / TNTs humic acid degradation of the optimum parameters for the reaction temperature of 30 ℃, pH value of 8.5-10.7, catalyst dosage of 0.4g / L, ozone dosage 383.46mg / h / L, light intensity 0.62mW/cm2, TOC removal rate of 80.12%, UV254 removal of up to 96.55%. The dynamic model of the existing correction so that it can draw the best process parameters, the theoretical optimum process parameters pH of 7.35, TNTs dosage 0.806g / L, O 3 dosage 490.00mg/h/L. O 3 / UV / TNTs humic acid degradation followed hydroxyl radical theory; strongly alkaline raw water to the initial value of IC and IC values ??during the reaction resulted in the accumulation of a decline in TOC removal ; initial reaction catalyst contaminated with the passage of time more and more serious, the maximum is reached after a period of time, with the time after the situation has been improved pollution. Select 10mol / L of NaOH dosage is 19mL, 1.0gP25 best Al 2 O 3 doping amount of 0.05g, doping morphology of the powder, the most Jia calcination temperature was 400 ℃, resulting Al-doped TiO 2 nanotubes (Al-TNTs) have good visible light photocatalytic performance. Response surface methodology through Al-TNTs visible photocatalytic ozonation of humic acid TOC research and analysis, initial pH on TOC removal with minimal impact, Al-TNTs dosage and O 3 Investment increase the amount of influence on the TOC removal is more significant, and are a positive impact, while, Al-TNTs dosage and O 3 dosage significant interactions. The Al-TNTs designed as cylindrical separable products, macro-state diameter 2mm, 3mm length of the cylinder, and the specifications are more consistent with the state of the micro porous structure, through high-powered field emission scanning electron microscope can be seen columnar Al-TNTs inner diameter 5-7nm, wall about 1nm, the length of about 30nm-100nm nanotubes. Columnar Al-TNTs specific surface area from Al-TNTs of 220m2 · g-1 reduced to 153m2 · g-1. On columnar Al-TNTs reuse degradation of landfill leachate were investigated. As the catalyst reuse of landfill leachate COD removal decreased, 60min, the catalyst first time, COD removal rate was 59.27%, the third use of only 11.4%. After the three contaminated exhaust catalyst regeneration ozone alone, COD removal efficiency reached 31.3%. Therefore, the exhaust after ozone pollution columnar Al-TNTs regenerative ability. Design new photocatalytic ozonation integrated fluidized bed reactor, set the contaminant degradation and catalyst regeneration in one. Test results 8g / L columnar Al-TNTs best dosage, 582.12mg/h/L optimal ozone dosage.
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