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Water Science & Technology Vol 51 No 1 pp 19–26 © IWA Publishing 2005 Microbiological characterization of winery effluents: an inventory of the sites for different treatment systemsF. Jourjon*, S. Khaldi**, M. Reveillere***, C. Thibault****, A. Poulard*****, P. Chretien****** and J. Bednar********Laboratoire GRAPPE, Ecole Supérieure d'Agriculture d'Angers, 55, rue Rabelais, B.P. 748, F-49007 Angers Cedex, France (E-mail: f.jourjon@groupe-esa.com) ABSTRACT In a more and more regulated and socially pressured environment, the durable management of winery effluents must take into account their characteristics and their potential impact on their natural setting. The object of this exploratory study is to establish an inventory of the microbiological composition of winery effluents coming from different treatment systems. We have observed that winery effluents are charged with micro-organisms, by a factor that ranges from 105 to 108 UFC/ml, and that the level of "microbiological pollution" is independent of the type of system. The composition of the flora is closely tied to the time of year and therefore to winery activities, so certain micro-organisms will be favoured in certain periods and others will have a tendency to decrease. We have seen that from one year to another our observations remain identical; the flora equilibrium therefore occurs systematically and naturally. Faecal germs are found in very small quantities in winery effluent treatment systems. They represent minor sanitary risks. Good correlations were observed between some micro-organisms and some physical-chemical parameters (COD). It is, however, difficult to use these "easy-to-measure" parameters as reliable markers of certain microbial populations. eProduct: Buy this article for £24.00 (IWA MEMBER PRICE: £18.00) All prices include VAT. For customers where VAT should not be applied, the VAT amount will be removed upon payment |
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