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

Citation
Fj. Benitez et al., Enhancement of the ozonation of wine distillery wastewaters by an aerobic pretreatment, BIOPROC ENG, 21(5), 1999, pp. 459-464
Citations number
13
Categorie Soggetti
Biotecnology & Applied Microbiology
Journal title
BIOPROCESS ENGINEERING
ISSN journal
0178515X → ACNP
Volume
21
Issue
5
Year of publication
1999
Pages
459 - 464
Database
ISI
SICI code
0178-515X(199911)21:5<459:EOTOOW>2.0.ZU;2-X
Abstract
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.