In this work application of AOPs such as Fenton process. aqueous phase high voltage electrical discharge (corona) and their combination have been studied for colored wastewater treatment. Experiments were conducted on water solutions of four different organic dyes. two azo dyes C.I. Mordant Yellow 10 (MY10) and C.I. Direct Orange 39 (DO39). and two reactive of azo type C.I. Reactive Red 45 (RR45) and C.I. Reactive Blue 137 (RB 137). The efficiency of studied AOPs has been estimated on the bases of UV-vis spectrophotometric and TOC measurements. The rate constants in the kinetic model have been determined. Experimental data have been compared with the developed mathematical model. (C) 2004 Elsevier B.V. All rights reserved.