Civil Engineering, College of Engineering and Informatics, National University of Ireland, Galway, Ireland.
Bioresour Technol. 2012 Jan;104:289-97. doi: 10.1016/j.biortech.2011.11.076. Epub 2011 Nov 26.
Anaerobic co-digestion of the solid fraction of separated pig manure (SPM) with dried grass silage (DGS) was evaluated in three identical continuously stirred tank reactors (CSTRs) at 35±1 °C. The feedstock contained 20% DGS in CSTR1, 30% DGS in CSTR2 and 40% DGS in CSTR3 on a volatile solids (VS) basis. Organic loading rates (OLR) of 1.0, 1.5, 2.0 and 3.0 kg VS/m(3)/d were studied and it was found that the OLR affected the digester performance more than the DGS proportion in the feedstock. Tripling the OLR increased volumetric methane yields by 88% and decreased specific methane yields by 38%. At the OLR of 3 kg VS/m(3)/d, post-methane production potentials of digestates ranged from 38% to 41% of total methane production potentials of the feedstock. An energy yield estimation on a 654-sow pig unit showed that 268-371 MWh/a electricity and 383-530 MWh/a heat would be generated.
采用 3 个完全相同的连续搅拌釜式反应器（CSTR），在 35±1°C 条件下对分离猪粪（SPM）的固相和干草青贮（DGS）进行混合厌氧共消化。进料在 CSTR1 中含有 20%的 DGS，在 CSTR2 中含有 30%，在 CSTR3 中含有 40%，均基于挥发性固体（VS）。研究了有机负荷率（OLR）分别为 1.0、1.5、2.0 和 3.0 kg VS/m(3)/d 的情况，结果表明，OLR 比进料中 DGS 的比例对消化器的性能影响更大。OLR 增加两倍使体积甲烷产量增加了 88%，而特定甲烷产量减少了 38%。在 OLR 为 3 kg VS/m(3)/d 时，消化物的后期甲烷生产潜力范围为进料总甲烷生产潜力的 38%至 41%。对一个拥有 654 头母猪的养猪场进行的能量产量估算表明，每年将产生 268-371 MWh/a 的电力和 383-530 MWh/a 的热能。
