OXIDATIVE TREATMENT OF A WASTE WATER STREAM FROM A MOLASSES PROCESSING USING OZONE AND ADVANCED OXIDATION TECHNOLOGIES

摘要

The discoloration of a biologically pretreated waste water stream from a molasses processing by ozonation and two advanced oxidation processes (O_3/H_2O_2 and O_3/γ-irradiation, respectively) was studied. Colour removal occurred with all three processes with almost the same efficiency. The main difference of the methods applied was reflected by the BOD increase during the discoloration period. By ozonation it was much higher than by AOPs but it also appeared with AOPs. AOPs were, therefore, not apt for an effective BOD control during discoloration.