EXAMINATION OF CONTROL FACTOR IN OZONE/HYDROGEN PEROXIDE TREATMENT

Abstract

 The strongest factor against bromate formation was dissolved ozone concentraiton even in the case of mixture of hydrogen peroxide. The decomposition rate of odorous substances were proportional to the amount of ozone consumption, regardless of the existence of hydrogen peroxide. When the water temperature is low, it was effective to set the hydrogen peroxide dosage to value that can sufficiently decompose the supplied ozone, and to set the ozone dosage corresponding to the load of the odorous substances at the same time.