a hybrid chemical / biological process which is highly effective to destroy the herbicide , atrazine , in wasterwater solutions is herein disclosed . the process comprises subjecting the atrazine molecule in an aqueous carrier to ozone to produce the oxidized product , diamino - s - triazine and thereafter , metabolizing the diamine in soil having indigenous and selected microogranism capable of degrading the diamine to carbon dioxide . also disclosed is a disposal system capable of preforming the process of the invention in a single system .