猪粪干式沼气发酵中试研究

发布时间：2018-07-07 23:30

本文选题：猪粪 + 干式沼气发酵　；参考：《中国沼气》2016年06期

【摘要】：生猪规模化养殖的发展在局部地区产生了大量猪粪,干式沼气发酵作为一种处理猪粪的技术手段,具备不需要稀释、沼液量少、容易等优势。笔者在已有小试的基础上,进行了为期12个月的猪粪连续干发酵中试。每日产气量,每月沼气成分、进出料的TS,VS,pH值,氨氮等指标的监测结果表明,该中试能正常产气,基本能顺利进出料,大多数月份甲烷含量稳定在53%以上,平均容积产气率为0.162 m~3·m~(-3)d~(-1),平均原料产气率为0.112m~3·kg~(-1)TS,pH值稳定在7.8~8.5之间,游离氨浓度在400 mg·L~(-1)以下基本不存在氨抑制问题,具备工程上推广应用的潜力。但是,由于没有升温保温,该中试的产气效率低,且产气不稳定。
[Abstract]:The development of large-scale pig breeding has produced a large amount of pig manure in local areas. As a technical means to treat pig manure dry biogas fermentation has the advantages of no need of dilution little amount of biogas liquid and so on. Based on the experimental results, a 12-month pilot-scale continuous dry fermentation of pig manure was conducted. The monitoring results of daily gas production, biogas composition per month, TSN VSU pH value, ammonia nitrogen and so on show that the pilot test can produce gas normally and basically smoothly, and the methane content in most months is above 53%. The average volumetric gas production rate is 0.162 mm3 d-1, the average raw material gas yield is 0.112m~3 kg-1, the pH value of TSN is between 7.8 and 8.5.The free ammonia concentration below 400mg L ~ (-1) has no ammonia inhibition problem, so it has the potential to be applied widely in engineering. The results are as follows: (1) the average volume gas production rate is 0.162 m ~ (-3) d ~ (-1), and the average gas production rate of raw material is 0.112m~3 ~ (-1) 路kg ~ (-1). However, the gas production efficiency of the pilot test is low and the gas production is unstable due to the absence of heating and heat preservation.
【作者单位】：农业部沼气科学研究所;
【基金】：国家自然科学基金(31572450) 国家生猪技术产业体系(CARS-36-10B)
【分类号】：S216.4;X713

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