Key Laboratory of Environmental and Applied Microbiology, Environmental Microbiology Key Laboratory of Sichuan Province, Chengdu Institute of Biology, Chinese Academy of Science, Chengdu 610041, China.
Chengdu Zhongke Energy & Environmental Protection Co. Ltd, Chengdu 610041, China.
Bioresour Technol. 2015;187:120-127. doi: 10.1016/j.biortech.2015.03.040. Epub 2015 Mar 13.
In order to investigate the effects of feedstock ratio and organic loading rate (OLR) on the anaerobic mesophilic co-digestion of rice straw (RS) and pig manure (PM), batch bottle tests (2.5L) were carried out at volatile solid (VS) ratios of 0:1, 1:2, 1:1, 2:1, and 1:0 (RS/PM), and continuous bench experiments (40L) were carried out at OLRs of 3.0, 3.6, 4.2, 4.8, 6.0, 8.0, and 12.0kg VS/(m(3)d) with optimal VS ratio. The results showed that the optimal ratio was 1:1 in terms of biogas yield. Stable biogas production with an average specific biogas production of 413L/kg VS was obtained at an OLR of 3-8kg VS/(m(3)d). Anaerobic co-digestion was severely inhibited by the accumulation of volatile fatty acids when the OLR was 12kg VS/(m(3)d). Further, light and serious foaming were observed at OLR of 8 and 12kg VS/(m(3)d), respectively.
为了研究进料比和有机负荷率（OLR）对水稻秸秆（RS）和猪粪（PM）厌氧中温共消化的影响，采用批式瓶实验（2.5L）在挥发性固体（VS）比为 0:1、1:2、1:1、2:1 和 1:0（RS/PM）下进行，采用连续小试实验（40L）在最佳 VS 比下在 OLR 为 3.0、3.6、4.2、4.8、6.0、8.0 和 12.0kg VS/（m3d）下进行。结果表明，从沼气产量来看，最佳比例为 1:1。在 OLR 为 3-8kg VS/（m3d）时，可获得稳定的沼气产量，平均比沼气产量为 413L/kg VS。当 OLR 为 12kg VS/（m3d）时，挥发性脂肪酸的积累严重抑制了厌氧共消化。此外，在 OLR 为 8kg VS/（m3d）和 12kg VS/（m3d）时，分别观察到轻微和严重的泡沫。
