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雞糞沼渣聯(lián)合好氧堆肥基質(zhì)降解與氣體排放研究
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教育部新世紀(jì)優(yōu)秀人才支持計劃項目(NCET-12-0524)和國家國際科技合作專項(2015DFA90370)


Substrate Degradation and Gases Emission during Co-composting of Chicken Manure Digestion
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    摘要:

    利用好氧堆肥反應(yīng)器系統(tǒng)開展雞糞沼渣聯(lián)合好氧堆肥試驗,,進行物理,、化學(xué),、生物學(xué)指標(biāo)和甲烷(CH4),、氨氣(NH3)及氧化亞氮(N2O)等排放氣體的多元動態(tài)表征,,并開展主要排放氣體與堆體氧濃度和溫度相關(guān)性分析。研究結(jié)果表明,,通過合理物料配比,、適度供氧的聯(lián)合好氧堆肥可更有效地實現(xiàn)雞糞沼渣安全,、優(yōu)質(zhì)資源化利用。雞糞沼渣聯(lián)合好氧堆肥過程中,,物理,、化學(xué)、生物學(xué)指標(biāo)動態(tài)變化具有良好的動態(tài)對應(yīng)關(guān)系,,纖維素類物質(zhì)的降解主要集中在反應(yīng)中后期,。堆肥過程中CH4與堆體氧濃度和溫度均呈現(xiàn)良好的負(fù)相關(guān)關(guān)系,NH3和N2O與溫度均呈正相關(guān)關(guān)系,;可通過控制堆體氧濃度和溫度調(diào)控氣體排放,。綜上,基于多元參數(shù)表征,、相關(guān)性分析可為雞糞沼渣聯(lián)合好氧堆肥工藝優(yōu)化提供理論和方法學(xué)支撐,。

    Abstract:

    A laboratory scale experiment of chicken manure digestion cocomposting was carried out using a reactor system with oxygen monitoring and feedback control. The physiochemical indexes, including temperature, oxygen concentration, volatile solid content (VS), moisture, C/N, pH value, EC, cellulose, hemicellulose, lignin, biological index, and main gas emissions (CH4, NH3 and N2O) were monitored and analyzed, respectively. Physical, chemical and biological indicators presented a good dynamic corresponding relationship, and the degradation of cellulose materials mainly appeared at the middle and later periods of aerobic cocomposting. Temperature and oxygen concentration had an effect on gas emissions: high temperature promoted the emissions of NH3 and N2O with a significantly positive correlation (r=0.378; r=0.695), high temperature and oxygen concentration decreased the emission of CH4 with a significantly negative correlation (r=-0.470; r=-0.494). Gas emissions can be controlled through adjusting the levels of composing oxygen concentration and temperature. Multiparameters characterization and correlation analyses can provide theoretical and methodological basis for process optimization of chicken manure and digestion co-composting. However, characterization and the coordination mechanism should be explored in depth on fermentation performance and gas emissions combining with comprehensive multiindexes during and digestion cocomposting in future studies.

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黃光群,黃晶,張陽,韓魯佳.雞糞沼渣聯(lián)合好氧堆肥基質(zhì)降解與氣體排放研究[J].農(nóng)業(yè)機械學(xué)報,2016,47(9):220-226. Huang Guangqun, Huang Jing, Zhang Yang, Han Lujia. Substrate Degradation and Gases Emission during Co-composting of Chicken Manure Digestion[J]. Transactions of the Chinese Society for Agricultural Machinery,2016,47(9):220-226.

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  • 收稿日期:2016-04-04
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  • 在線發(fā)布日期: 2016-09-10
  • 出版日期: 2016-09-10
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