Characterization and treatment of olfactory pollution emitted by wastewater in wineries of Mediterranean region

The emission of malodorous compounds from residual wastewater of four winer ies in the Mediterranean region was studied. In order to avoid the discharg e of this effluent to a river, it must be concentrated or eliminated; for e xample, by evaporation. The odorous compound emission from the wastewater s torage was characterized and to try to stop malodorous compound formation d ue to biological degradation of organic matter, the liquid effluent was aci dified and aerated. The acidification test showed some modification of odou r quality, however,the unpleasant smell still remained. On the other hand, the aeration of such an effluent resulted in the removal of the smell but o nly for wastewater with a total organic carbon value lower than 500 ppm.