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

被引:15
|
作者
Xu, Jiele [1 ]
Adair, Charles W. [2 ]
Deshusses, Marc A. [1 ]
机构
[1] Duke Univ, Dept Civil & Environm Engn, Durham, NC 27708 USA
[2] Duke Univ, Off Execut Vice President, Duke Carbon Offsets Initiat, Durham, NC 27708 USA
关键词
Anaerobic digester; Biogas; Methane; Nutrient management; Swine waste; AUTOTROPHIC NITROGEN-REMOVAL; DIGESTION; LAGOON; WATER; OPERATION; NITRITE; MANURE;
D O I
10.1016/j.biortech.2016.05.089
中图分类号
S2 [农业工程];
学科分类号
0828 ;
摘要
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 m(3) anaerobic digester, a 65-kW microturbine, and a 4200 m(3) 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. (C) 2016 Elsevier Ltd. All rights reserved.
引用
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页码:494 / 502
页数:9
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