Performance evaluation of a full-scale innovative swine waste-to-energy system

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Abstract

Intensive monitoring was carried out to evaluate the performance of a full-scale innovative swine waste-to-energy system at a commercial swine farm with 8640 heads of swine. Detailed mass balances over each unit of the system showed that the system, which includes a 7600 m3 anaerobic digester, a 65-kW microturbine, and a 4200 m3 aeration basin, was able to remove up to 92% of the chemical oxygen demand (COD), 99% of the biological oxygen demand (BOD), 77% of the total nitrogen (TN), and 82% of the total phosphorous (TP) discharged into the system as fresh pig waste. The overall biogas yield based on the COD input was 64% of the maximum theoretical, a value that indicates that even greater environmental benefits could be obtained with process optimization. Overall, the characterization of the materials fluxes in the system provides a greater understanding of the fate of organics and nutrients in large scale animal waste management systems.

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Xu, J., Adair, C. W., & Deshusses, M. A. (2016). Performance evaluation of a full-scale innovative swine waste-to-energy system. Bioresource Technology, 216, 494–502. https://doi.org/10.1016/j.biortech.2016.05.089

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