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Enhancement of the ozonation of wine distillery wastewaters by an aerobic pretreatment

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The decomposition of the organic substrate present in wine distillery wastewaters (WDW) is studied in batch reactors, by an ozonation process, by an aerobic degradation and by another ozonation of the aerobically pretreated wastewaters. In the ozonation process, the effects on the substrate removal obtained of the temperature, pH and the presence of H2O2 and UV radiation are established, and an approximate kinetic study is conducted which leads to the evaluation of the apparent kinetic constants for the substrate reduction. 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 the experimental data provides the specific kinetic parameters qmax and K1. Finally, in the ozonation of the pretreated wastewaters, the influence of the operating variables is established, and the effect of this aerobic pretreatment on the substrate removal and kinetic constants obtained in the ozonation stage is also discussed.

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Received: 22 December 1998

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Benitez, F., Beltran-Heredia, J., Real, F. et al. Enhancement of the ozonation of wine distillery wastewaters by an aerobic pretreatment. Bioprocess Engineering 21, 459–464 (1999). https://doi.org/10.1007/s004490050702

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  • Biomass
  • Ozonation
  • Phenolic Compound
  • Organic Substrate
  • Kinetic Study