Evaluation of anaerobic acidification potential for winery effluent

• Autor(a) principal: Lopes, Celine de Oliveira Marques
• Data de Publicação: 2012
• Tipo de documento: Dissertação
• Idioma: eng
• Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
• Texto Completo: http://hdl.handle.net/10773/10253
• topic: Estudos ambientais; Efluentes industriais; Indústria vinícola; Tratamento de efluentes; Tratamento anaeróbico; Reactores biológicos; Acidificação

Given that the industrial wastewater represent a negative contribution of great significance to environmental, developed this work with a practical study on the behavior of a particular industrial effluent, in this case the wine, when subjected to tests of anaerobic acidification in batch reactors, in order to obtain value-added products from this waste. In this sense we studied the effects of this treatment in three operating parameters: organic load, alkalinity and using a thermal pre-treatment for biomass, in order to inhibit methanogenic activity. In all there were three sets of reactors, with three reactors each, totaling nine reactors were analyzed with varying concentrations of four different organic load, three different concentrations of alkalinity solution of calcium bicarbonate, NaHCO3. It was observed a good acidogenic potential for the wine effluent where it was achieved, for reactors higher organic load, a degree of acidification of 85%, it was found that the alkalinity is related to the organic load used and shows great significance in the formation of the peaks of maximum acidogenic production and diversity of VFAs, higher alkalinities favor acids of longer carbon chain, and the peak is produced earlier. The thermal pre-treatment was not beneficial despite achieved good results in terms of degree of acidification it has not exceeded the values obtained in the reactors were the thermal pre-treatment was not applied to the sludge.