Study on Catalytic Ozonation/BAC Process for Advanced Drinking Water Treatment

Catalytic ozonation/biological activated carbon process was applied for advanced drinking water treatment in this study. The results showed that with the ozone dosage of 2.0mg/L, the removal of CODMn, TOC and UV₂₅₄ in catalytic ozonation unit was 24.6%, 15.9% and 59.8%, and increased to 40%, 16% and 68% respectively after being treated by BAC. The catalytic ozonation unit contributed to more than 50% of the total removal. The maximum removal of BDOC was as high as 73.3%. It was also found that ozone and catalyst (activated carbon) acted in synergetic effect rather than in pure addition.