RADIATION-INDUCED OH RADICAL GENERATION AND ITS USE FOR GROUNDWATER REMEDIATION

Because of nitrite and hydrogenperoxide formation irradiation treatment alone is not apt for groundwater remediation with regard to utilization as drinking water. Addition of ozone to the water before irradiation eliminates the nitrite and hydro-en peroxide as well and causes the reducin- species of water radiolysis to be converted into OH radicals. The resulting advanced oxidation process is the only one which is based on two OH radical sources: water radiolysis and ozone decomposition. The basic chemistry and a 3 m3 prototype installation is described.