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为了研究厌氧消化过程中日产气量、累计产气量和甲烷含量随厌氧消化时间的变化规律,在中温35℃±1℃条件下,采用批式单相厌氧消化工艺,分别用香菇、杏鲍菇和平菇废弃菌棒与猪粪混合发酵。结果表明,蘑菇菌棒具有很好的产气潜力,其中香菇菌棒TS产气量最高,为142.9mL.g-1,平均产气量664.1mL.d-1,杏鲍菇菌棒所产气体甲烷含量最高,平均63.8%;添加猪粪调节蘑菇菌棒C/N至25/1,对香菇菌棒前期严重酸化现象起到了很好的缓冲作用,使香菇菌棒、杏鲍菇菌棒和平菇菌棒累计产气量较单一物料分别提高了131.5%、97.9%和79.9%。研究结论为:香菇、杏鲍菇和平菇废弃菌棒均具有良好的产气潜力;添加猪粪能显著提高蘑菇菌棒累计产气量,同时提高香菇菌棒甲烷含量,降低杏鲍菇菌棒甲烷含量,对平菇菌棒甲烷含量影响不大。
In order to study the changes of daily gas production, accumulated gas production and methane content with time of anaerobic digestion during anaerobic digestion, a batch single-phase anaerobic digestion process was used under the condition of 35 ℃ ± 1 ℃ of temperature. Pleurotus ostreatus mushroom waste pig and pig manure mixed fermentation. The results showed that mushroom mushrooms had good gas production potential. Among them, TS gas production of mushroom mushrooms was the highest, 142.9mL.g-1, average gas production was 664.1mL.d-1, The highest content, an average of 63.8%; pig manure added to adjust the mushroom stick C / N to 25/1, a serious pre-acidification of mushroom strains of bacteria played a good buffer, so Lentinula edodes, Pleurotus eryngii and mushroom The accumulative gas production of bacteria rods increased by 131.5%, 97.9% and 79.9% respectively compared with that of single material. The conclusion is that the mushrooms, Pleurotus eryngii and Pleurotus ostreatus have good gas production potential. Adding pig manure can significantly increase the cumulative gas production of mushrooms, increase the methane content of mushrooms, Content, little effect on Pleurotus ostreatus rod methane content.