摘要
为考察羊粪与尾菜联合高固体厌氧消化性能,采用批式试验,在初始有机负荷为45 gVS·L^(-1)和中温(37℃)的条件下研究羊粪与尾菜不同挥发性固体(VS)质量配比(1∶0、3∶1、2∶1、1∶1、1∶2、1∶3、0∶1)对厌氧消化性能的影响。结果表明:羊粪与尾菜在3∶1、2∶1、1∶1、1∶2、1∶3的不同配比处理条件下累积VS甲烷产率分别为181.6、158.7、194.2、184.6、197.2 mL·g^(-1)VS,与羊粪单独发酵处理相比,甲烷产率提高7.3%~33.3%,与尾菜单独发酵处理相比,厌氧消化迟滞期(λ)与达到最大VS累积甲烷产量90%所需的时间(T90)分别缩短3.2~5.8 d与2.8~5.4 d。联合厌氧消化协同效应分析表明,除2∶1处理外,羊粪与尾菜不同配比联合高固体厌氧发酵均存在协同作用。在中温高固体厌氧消化工程应用中,建议羊粪与尾菜VS配比为1∶1,设计水力停留时间为20 d,累积VS甲烷产率为194.2 mL·g^(-1)VS。
In order to investigate the effect of the mass ratio of sheep manure to vegetable residues on anaerobic digestion, high-solid anaerobic batch co-digestion of sheep manure and vegetable residues at 1：0, 3：1, 2：1, 1：1, 1：2, 1：3, and 0：1 ratios was carried out at 37℃ with initial organic loading of 45 g VS·L-1. The results showed that the cumulative methane yields based on volatile solids of sheep manure and vegetable residues at 3：1, 2：1, 1：1, 1：2, and 1：3 ratios were 181.6, 158.7, 194.2, 184.6, and 197.2 mL·g-1 VS, respectively, which increased by 7.3%～33.3% compared to that with only sheep manure as the substrate. Compared with only vegetable residues as the substrate, the lag periods of anaerobic digestion （λ） and the time to achieve 90% of the maximum cumulative methane yield （T90） were shortened by 3.2～5.8 d and 2.8～5.4 d, respectively. Synergistic effect analysis of the anaerobic co-digestion showed that synergistic effects existed between anaerobic co-digestion of sheep manure and vegetable residues at the different mass ratios, except for 2：1. For practical project application, a 1：1 substrate mixture of sheep manure to vegetable residues was recommended, as the designed retention time and cumulative methane yield based on volatile solids were 20 d and 194.2 mL·g-1 VS, respectively.
作者
齐利格娃
张克强
田雪力
翟中葳
杜连柱
丁飞飞
梁军锋
QI Li-ge-wa;ZHANG Ke-qing;TIAN Xue-li;ZHAI Zhong-wei;DU Lian-zhu;DING Fei-fei;LIANG Jun-feng(Agro-Environmental Protection Institute,Ministry of Agriculture and Rural Affairs,Tianjin 300191,China;Scientific Observing and Experimental Station of Dali,Ministry of Agriculture and Rural Affairs,Dali 671004,China)
出处
《农业环境科学学报》
CAS
CSCD
北大核心
2018年第11期2475-2482,共8页
Journal of Agro-Environment Science
基金
国家重点研发计划项目(2017YFD0800801-02)
中国农业科学院科技创新工程协同创新项目(CAAS-XTCX2016011-02)~~
关键词
羊粪
尾菜
联合厌氧发酵
高固体
甲烷
sheep manure
vegetable residues
anaerobic co-digestion
high solids
methane
