The decomposition of the organic substrate present in wine distillery waste
waters (WDW) is studied in batch reactors, by an ozonation process, by an a
erobic degradation and by another ozonation of the aerobically pretreated w
astewaters. In the ozonation process, the effects on the substrate removal
obtained of the temperature, pH and the presence of H2O2 and UV radiation a
re established, and an approximate kinetic study is conducted which leads t
o the evaluation of the apparent kinetic constants for the substrate reduct
ion. In the aerobic degradation treatment, the evolution of the substrate,
biomass and total phenolic compounds are followed during the process, and a
kinetic study is performed by using the Contois model, which applied to th
e experimental data provides the specific kinetic parameters q(max) and K-1
. Finally, in the ozonation of the pretreated wastewaters, the influence of
the operating variables is established, and the effect of this aerobic pre
treatment on the substrate removal and kinetic constants obtained in the oz
onation stage is also discussed.