Abstract
This technical report illustrates an anaerobic digestion plant for the production of biogas designed to be powered by livestock biomass, combined with a 330 kWe CHP unit co-generator, installed in a cattle farm located in the province of Reggio Emilia. The plant consists essentially of a pre-treatment system of the effluents to the load, two anaerobic continuously stirred tank reactors and heated under mesophilic regime sheltered with gasometric coverings with double membrane; at the end of the process of fermentation, the digestate converges in a solid-liquid separation system with helical compression and a storage tank of the clarified fraction, sheltered with a covering for the containment of residual gaseous emissions into the atmosphere. The produced biogas is collected in gasometers placed above the tanks and, after desulfurization, dehumidification and cooling, it fuels the co-generator. The report is determined to illustrate the experimental results for the first 12 months of operation of the plant that confirmed, both in terms of energy and from a financial perspective, the efficiency of biogas plants fueled only by livestock effluents.
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