Controlling noxious odours from settling ponds The problem A co-operative oil mill in southern France (Le Moulin de Villevieille, Sommières) discharges waste mill water into a storage pond where it evaporates. The pond is some way from the mill and used to be the source of unpleasant odours. The mill co-operative, in partnership with French National Institute for Agronomical Research (INRA), sought ways and means of abating these noxiou

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