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在中温(35℃±1℃)条件下,采用批式发酵方式,进行了鸡粪与互花米草沼渣不同混合比例的厌氧发酵实验.实验设置鸡粪∶互花米草沼渣干物质(TS)比分别为5∶0(T1)、4∶1(T2)、3∶2(T3)、2∶3(T4)、1∶4(T5)和0∶5(T6)共6个处理.结果表明,经中温干发酵后的互花米草沼渣仍具有一定的厌氧产沼气能力,TS产气量为107.25 mL.g-1,甲烷含量为76.92%,厌氧微生物对互花米草沼渣纤维素的结晶区有一定的破坏作用,厌氧发酵后纤维素的相对结晶度指数CrI下降了5.55%;将鸡粪与互花米草沼渣混合发酵,明显提高了原料的厌氧产气性能,T2的产气效果最好,T1、T3～T6的累积产气量分别为T2的61.31%、62.09%、52.15%、39.74%和31.67%;鸡粪与互花米草沼渣混合发酵的产酸类型为混合型发酵,发酵过程中未出现酸化现象;混合发酵对破坏互花米草沼渣纤维素的结晶区有利,促进效果在1.13%～21.61%.
Anaerobic fermentation experiments were conducted at different temperature and temperature (35 ℃ ± 1 ℃) by using batch fermentation method, with different mixture proportions of chicken manure and Spartina alterniflora mixed biogas residue.Experiment set chicken manure: Spartina alterniflora (TS) ratios of 5:0 (T1), 4: 1 (T2), 3: 2 (T3), 2: 3 (T4), 1: 4 (T5) and 0: 5 The results showed that the biogas residue after biogas fermentation still possessed anaerobic biogas production capacity of 107.25 mL.g-1 for TS, 76.92% for methane, The crystallization zone of Spartina alterniflora cellulose had a certain destructive effect. The relative crystallinity index (CIE) of cellulose after anaerobic fermentation decreased by 5.55%. The mixed fermentation of chicken manure and Spartina alterniflora was significantly improved The anaerobic gas production performance of T2 was the best, and the cumulative gas production of T1 and T3 ~ T6 was 61.31%, 62.09%, 52.15%, 39.74% and 31.67%, respectively, of T2; The acidification type of biogas residue fermentation was mixed fermentation without acidification in the fermentation process. The mixed fermentation was beneficial to the destruction of the crystalline region of Spartina alterniflora cellulose, and the promotion effect was 1.13% ~ 21.61%.