菌渣与麦秸厌氧消化产气潜能研究
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摘要
为了帮助企业处理菌渣厌氧消化产沼气的问题,试验采用菌渣与麦秸共发酵的方式,结合现有处理工序,重点考察不同原料配比及消化温度对产气的影响。试验结果表明:相同消化温度下,不同物料的混合比例对产气结果的影响有所不同。单一菌渣累积产气量和容积产气率较低,但单位有机质产气率高,说明菌渣作为底物用于厌氧消化产沼是可行的;随着麦秸的添加比例增大,各组累积产气量和容积产气率有不同程度的增加,厌氧消化时间有所提前。综合各项产气结果,当菌渣与麦秸比例为1∶1,消化温度为35℃时产气性能最佳。该项研究结果可为企业菌渣资源化处理及提高产气效率提供基础参数。
In order to help the enterprise to deal with the problem of biogas production of bacterial residue, the co-digestion of bacteria residue and wheat straw was designed in considering with the existing process in the enterprise, and the effects of raw material mixing ratio and digestion temperature on biogas production were investigated. The results showed thats, at the same digestion temperature, the mixing ratio of different materials had different effects on the gas production. The cumulative gas production and volumetric gas production rate of sole bacteria residue were low, but the gas yield per unit organic matter was high, indicating that the bacteria residue could be used as substrate for anaerobic digestion. As the proportion of wheat straw increased, the cumulative gas production and volumetric gas production rate of each group increased to different degrees, and the anaerobic digestion time was advanced. According to the gas production results, it was suggested that the optimum ratio of bacteria residue to wheat straw was 1∶1, and the optimum temperature was 35°C.
In order to help the enterprise to deal with the problem of biogas production of bacterial residue, the co-digestion of bacteria residue and wheat straw was designed in considering with the existing process in the enterprise, and the effects of raw material mixing ratio and digestion temperature on biogas production were investigated. The results showed thats, at the same digestion temperature, the mixing ratio of different materials had different effects on the gas production. The cumulative gas production and volumetric gas production rate of sole bacteria residue were low, but the gas yield per unit organic matter was high, indicating that the bacteria residue could be used as substrate for anaerobic digestion. As the proportion of wheat straw increased, the cumulative gas production and volumetric gas production rate of each group increased to different degrees, and the anaerobic digestion time was advanced. According to the gas production results, it was suggested that the optimum ratio of bacteria residue to wheat straw was 1∶1, and the optimum temperature was 35°C.
引文
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[2] 胡纪萃,周孟津,左剑恶,等.废水厌氧生物处理理论与技术[M].北京:中国建筑工业出版社,2002.
[3] ChayanonSawatdeenarunat K C,Surendra Devin Takara,et al.Anaerobic digestion of lignocellulosic biomass:Challenges and opportunities[J].Bioresource Technology,2015,178:178-186.
[4] 陈芬,李伟,刘奋武,等.3种畜禽粪便产气特性差异分析[J].环境工程学报,2015,9(9):4540-4546.
[5] Wei S Z,Zhang H F,Cai X B,et al.Psychrophilic anaerobic co-digestion of highland barley straw with two animal manures at high altitude for enhancing biogas production[J].Energy Conversion and Management,2014,88:40-48.
[6] Zhou Q,Shen F,Yuan H R,et al.Minimizing asynchronism to improve the performances of anaerobic co-digestion of food waste and corn stover[J].Bioresource Technology,2014,166:31-36.
[7] Liu C,Li H,Zhang Y Y,et al.Characterization of methanogenic activity during high-solids anaerobic digestion of sewage sludge[J].Biochemical Engineering Journal,2016,109:96-100.
[8] Apha,Awwa wef .Standard Methods for the Examination of Water and Wastewater,19th ed.American Public Health Association/America Water Works Association/Water Environment Federation[M].Washington DC:USA,1995.
[9] 国家环境保护总局,《水和废水监测分析方法》编委会.水和废水检测分析方法(第四版)[M].北京:中国环境科学出版社,2002.
[10] 杜静,陈广银,黄红英,等.温和湿热预处理对稻秸理化特性及生物产沼气的影响[J].中国环境科学,2016,36(2):485-491.
[11] 张彤.羊粪厌氧消化影响因素分析及产气特性研究[D].陕西:西北农林科技大学,2014.
[12] 杨茜,鞠美庭,候其东,等.微波辅助MgO/SBA-15预处理对玉米秸秆厌氧消化的影响[J].太阳能学报,2018,39(6):1711-1719.
[13] 楚莉莉.不同原料及其配比厌氧发酵产气效果研究[D].陕西:西北农林科技大学,2008.
[14] Liu C M,Yuan H R,Zou D X,et al.Improving biomethane production and mass bioconversion of corn stover anaerobic digestion by adding NaOH pretreatment and trace elements[J].Hindawi Publishing Corporation,2015:1-9.