• Top scientific programme at the MACROWINE 2021 congress
    Virtual Conference - from 23 to 30 June 2021
    It is considered to be the most important scientific congress for the wine sector, due to the breadth of topics covered - from vine to glass - and due to the number and origin of the researchers wh...
    Published on: 06/01/2021

Impacts of Winemaking Methods on Wastewaters and their Treatment.


The volume, composition and organic load of wastewaters from five wineries producing white, ros and red wines by thermovinification, as well as traditionally vinified red wines (75 000 hL to 240 000 hL wine), were studied in terms of the vinification methods used. Liquid-phase vinifications (white, ros, thermovinification) produce wastewaters rich in sugars: 70% of the chemical oxygen demand (COD) when the must is treated, and flows depend on the daily supply of grapes, representing 40 to 46% of the annual volume of wastewaters during the first month of activity (September). In contrast, solid-phase vinifications do not produce large quantities of waste at harvest, and wastewaters produced mainly during devatting are characterised by a predominance of ethanol (<= 75% COD) and by staggered flows towards the second month (October), which are less intense (26.7 to 33.6%) and more spread out. The specific pollution coefficients of liquid-phase vinifications (5.18 to 6.04 kg COD/t grapes) are greater than those of solid-phase vinifications (3.82 kg COD/t grapes). The higher the winery's liquid-phase vinification rate, the more the maximal monthly volume of waste will be intense and early. These results should contribute to the improved design and management of winery wastewater treatments. (We recommend that you consult the full text of this article).
Published on 01/25/2011
Related sheets
© All Right Reserved
ISSN 1826-1590 VAT: IT01286830334
powered by Infonet Srl Piacenza
Privacy Policy
This website and its related third-party services make use of cookies necessary for the purposes described in the cookie policy. If you want to learn more about cookies or how to disable them (either totally or partially), please see the cookie policy. By closing this banner, scrolling through this page, clicking on a link or continuing navigation in any other way, you consent to the use of cookies.
More informationOK

- A +
ExecTime : 1,390625