Ozonation And Catalytic Ozonation Of P-Chlorophenol And Sulfosalicylic Acid

The physical chemistry properties and application in water treatment of ozone were reviewed and the research objection was proposed too.There was two parts in this paper: Ozonation and catalytic ozonation of P-Chlorophenol; Degradation of sulfosalicylic acid by O3/UV, O3/TiO2/UV, O3/V-O2/TiO2, respectively.In the third chapter, after the degradation of P-chlorophenol by O3/UV> T1O2/UV and O3/TiO2/UV, the results showed ozone combined with TiO2/UV was the most signfictant. After Smins under the same expermental condition,the removal rates of P-chlorophenol by O^/UV^ TiO2/UV and O3/TiO2/UV were 55%,10%,77%,respectively. The nature of degradation of P-chlorophenol by ozone combined with TiO2/UV was the ozone could capture the electrons of TiC>2 (e~ h+) when TiO2 adsorbed the UV light, then produced the more hydroxyl radical to faster the degradation of organic matter.And in the same condition , O3/V-O2/TiO2 had been used to degrade the P-chlorophenol.The results showed the degradation by O3/V-O2/TiO2 was better than by O3/UV and worse than by O3/TiO2/UV.In the forth chapter, three ways (O3/UV , O3/TiO2/UV , O3/V-O2/TiO2)had been used to degrade the sulfosalicylic acid in thisexperiment. The results showed that the affection of Oa/V-Oi/TiC^ to the sulfosalicylic acid was the best in three advanced oxidation processes. In the same experimental condition , the results after 30 minutes showed that the removal rates of COD in three advanced oxidation processes were 47%,55%,and70%,respectively. The results under different pH conditions showed that O3/TiO2/UV is more sensitive to the pH of waterbody. In the presence of scavenger, the results showed that the order of the activity of hydroxyl radical in three advanced oxidation process was O3/V-O2/TiO2 > O3/TiO2/UV > O3/UV.