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豬糞麥稈不同比例混合厭氧發(fā)酵特性試驗
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國家自然科學基金資助項目（30700482）;“十一五”國家科技支撐計劃資助項目（2007BAD89B16）;陜西省13115重大科技計劃資助項目（2009ZDKG—03、2010ZDKG—06）


Characteristics of Co-digestion of Pig Dung and Wheat Straw in Various Ratios
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    摘要:

    以豬糞、麥稈為原料，研究了35℃下二者按不同比例混合對厭氧消化產(chǎn)沼氣的影響，分析了消化過程中日產(chǎn)氣量,、累積產(chǎn)氣量、甲烷含量,、原料去除率,、pH值以及氨態(tài)氮質(zhì)量濃度的變化,。結(jié)果表明，豬糞與麥稈配比（干物質(zhì)量比）1∶1時產(chǎn)氣量最大,，為383.0mL/g,，是麥稈單獨發(fā)酵產(chǎn)氣量（231.8mL/g）的1.6倍；混合原料（豬糞和麥稈配比分別為1∶1,、2∶1,、3∶1）的VS去除率均在37%以上，比麥稈提高12.0%～26.9%,；添加豬糞可提高發(fā)酵液中氨態(tài)氮含量,，較麥稈提高35.6%～64.8%。因此,，合理調(diào)控糞稈混合厭氧發(fā)酵的比例,，能提高秸稈的產(chǎn)氣率和利用率。

    Abstract:

    Pig dung and wheat straw (the ratio of pig dung to wheat straw was 1∶1, 2∶1, 3∶1)were used as fermentation materials. The experiments were carried out at 35℃. The biogas production rate, cumulative biogas yield, methane content, material reduction, pH value and NH3-N content were tested. The results showed that the co-digestion of pig dung to wheat straw could increase the biogas yield and material reduction of wheat straw. The biogas production yield of 1∶1 was highest (383.0mL/g), which was 1.6 times of biogas production yield of wheat straw (231.8mL/g). VS reductions of combination materials were 12.0%～26.9% higher than wheat straw. Compared with wheat straw, the NH3-N contents of combination materials increased by 35.6%～64.8%. Reasonable co-digestion ratio of livestock dung and crop straw could increase the biogas production rate and utilization of crop straw.

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楚莉莉,李軼冰,馮永忠,楊改河,任廣鑫.豬糞麥稈不同比例混合厭氧發(fā)酵特性試驗[J].農(nóng)業(yè)機械學報,2011,42(4):100-104. Chu Lili, Li Yibing, Feng Yongzhong, Yang Gaihe, Ren Guangxin. Characteristics of Co-digestion of Pig Dung and Wheat Straw in Various Ratios[J]. Transactions of the Chinese Society for Agricultural Machinery,2011,42(4):100-104.

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