摘要
研究了玉米秸与鸡粪在不同混合比例条件下的厌氧消化产气性能和协同作用效果。设计了9种玉米秸与鸡粪的混合比例(1∶0、1∶1、1∶2、1∶3、1∶4、2∶1、3∶1、4∶1、0∶1),每种比例分别在3个不同负荷(50、65和80 g/L)下进行混合厌氧消化。结果表明,与未预处理玉米秸与鸡粪混合厌氧消化相比,NaOH预处理玉米秸与鸡粪混合厌氧消化的单位TS产气量提高了5.5%～62%。当预处理玉米秸与鸡粪的混合比例为1∶2、上料负荷为50 g/L时消化产气性能最好,此时的累积甲烷产量达到19 488 mL,比相同负荷下单一玉米秸厌氧消化的累积甲烷产量高出32.6%,比单一鸡粪厌氧消化的累积甲烷产量高出11.4%。混合厌氧消化协同作用的贡献率达到7.1%～17.7%,其中玉米秸与鸡粪的比例为1∶2时,其贡献率与其他比例相比高出25%～150%。可以为粪草混合原料厌氧消化提供设计和运行依据。
Performance and synergistic effect of anaerobic co-digestion oi corn stover and chicken manure were investigated. Nine ratios of corn stover to chicken manure （CS/CM） （ 1 ： 0,1 ： I, 1 ： 2,1 ： 3,1 ： 4,2：1,3 ： l, 4： 1,and 0： 1）） and three loading rates of total solids （TS） （50, 65 and 80 g/L） were used. The results showed that compared to co-digestion of untreated corn stover and chicken manure, 5.5% -62% more biogas productions were obtained for co-digestion of NaOH pretreated ones. The co-digestion with CS/CM of 1：2 and loading rate of 50 g TS/L obtained the highest total methane production of 19 488 mL, which was 32.6% and 11.4% higher than that of the CS/CM ratios of 1：0 and 0：1 at the same loading rate. The synergistic effect of co-digestion of chicken manure with NaOH pretreated corn stover contributed to methane yield increase of 7.1% - 17.7%. The synergistic effect of the co-digestion with CS/CM of 1：2 was 25% - 150% higher than other radios. This study would provide the parameters for effective operation and optimal design of anaerobic co-digestion facility of straw and manure.
出处
《环境工程学报》
CAS
CSCD
北大核心
2013年第4期1489-1494,共6页
Chinese Journal of Environmental Engineering
基金
国际科技交流与合作专项(2011DFA90800)
国家高技术研究发展计划(863)项目(2008AA062401)
科技部国际科技合作项目(2010DFA62510)
关键词
玉米秸
鸡粪
厌氧消化
协同作用
corn stover
chicken manure
anaerobic digestion
synergistic effect
