低温蛋白质氨化复合菌系对沼气酸化液pH及产甲烷活性的影响  

Effects of biogas acidizing fluid pH and methane-producing activity on low-temperature protein ammoniation composite strains

作　　者：王玥婷[1] 徐凤花[1] 李金 赵忠宝[1] 郭建全[1] 

机构地区：[1]东北农业大学资源与环境学院,哈尔滨150030

出　　处：《东北农业大学学报》2011年第2期104-108,共5页Journal of Northeast Agricultural University

基　　金：国家高技术研究发展计划项目(2007AA100705)

摘　　要：研究了低温蛋白质氨化复合菌系对3组不同处理酸化液的pH及产甲烷活性的影响。结果表明,接低温蛋白质氨化复合菌系的酸化液中氨态氮和pH均在5d时达到最高和适宜的pH范围,较KHCO3调试的酸化液和自然发酵酸化液提前2d,且产气量最高,15d达到产气高峰时产气量较KHCO3调试的酸化液和自然发酵酸化液提高了45.45%和77.78%;同时CO2和甲烷含量也分别提高7.13%、14.29%和10.27%、24.08%。由此可见,低温蛋白质氨化复合菌系可加快含氮有机物转化为氨态氮的速度,缩短了调节酸化液pH的时间,并为产甲烷菌生长提供所需要的氨态氮和甲烷形成的前体物质,提高了产甲烷菌的活性,使产气启动期提前。This experiment studied on the effects of low-temperature protein ammoniation composite strains on pH and methane-producing activity through three groups of different processing acidizing fluid. The results showed that ammoniacal nitrogen was reached the highest and pH was reached the suitable scope in the group which added low-temperature protein ammoniation composite strains on the fifth day,advanced 2 days than KHCO3 debugging acidizing fluid and the natural fermentation acidizing fluid,moreover,the gas production was the highest,on the fifteenth day reached the peak of biogas production,increased 45.45% and 77.78% than KHCO3 debugging acidizing fluid and the natural fermentation acidizing fluid;meanwhile the gas content of CO2 and the methane contents improved 7.13%,14.29% and 10.27%,24.08%. Thus,low-temperature protein ammoniation composite strains night accelerate the rate of decomposition of nitrogen organic compounds translating into ammoniacal nitrogen,abbreviating the time of adjusting pH,provided the ammoniacal nitrogen for methanogens growth and precursors for methane formation,improved the methanogens activity,and made the start time of gas production in advance.

关 键 词：低温蛋白质氨化复合菌系 低温产甲烷菌复合系 酸化液pH 产气量 甲烷含量 

分 类 号：Q939.96[生物学—微生物学]