Kinetic Study and Optimum Control of the Ozone/UVProcess Measuring Hydrogen Peroxide Formed In-situ

摘要

This study was conducted to develop the kinetic model of ozone/UVrnprocess monitoring the trend of hydrogen peroxide formed in-situ. Arnspecifically devised setup, which could continuously measure thernconcentration of hydrogen peroxide as low as 10 μg/L, was used.rnFrom this kinetic study, it was possible to determine the UV intensityrn(Io) of photo-reactor and the quantum yields (ΦO3 and Φper) of ozonernand hydrogen peroxide and to calculate the hydroxyl radical (OH°)rnconcentrations.rnThe optimum ozone dose was also investigated at the fixed UV dosernusing the removal rate of UV absorbance at 254nm (A254) in source ofrndinking water. The result showed that the continuous monitoring ofrnhydrogen peroxide formed in-situ in ozone/UV process could be usedrnas an important tool to operate the ozone/UV process at the optimumrncondition.