同海大学 Tongji University The free radicals formed,H0,and HO,have great oxidizing powers,and are probab/y the active form in the disinfection process. These free radicals also possess the oxidizing power to react with other impurities in aqueous solution. (refractory organics,such as pesticides,algae)Tongji University The free radicals formed, HO2 and HO, have great oxidizing powers, and are probably the active form in the disinfection process. These free radicals also possess the oxidizing power to react with other impurities in aqueous solution. (refractory organics, such as pesticides, algae)