食微比对丙氨酸菌渣厌氧消化的影响  

Influence of Food to Microorganism Ratio on Anaerobic Digestion of Bacterial Residues from Alanine Production

作　　者：汤若昊 刘洋 郁亮[2] 贾士儒[1] 陈树林[2] 李德茂[2] 

机构地区：[1]天津科技大学生物工程学院工业微生物教育部重点实验室,天津300308 [2]中国科学院天津工业生物技术研究所工业生物系统与生物加工工程重点实验室,天津300457 [3]安徽华恒生物科技股份有限公司,安徽合肥230041

出　　处：《中国沼气》2016年第2期13-17,共5页China Biogas

摘　　要：文章在中温（35℃）条件下对丙氨酸菌渣进行厌氧消化试验,比较5种食微比（0.5,1,2,4,8）接种对500m L厌氧消化体系的p H值,TS,VS,COD,氨氮,VFA,产气量和甲烷含量的影响。结果表明,在F/M=2时,系统的TS,VS去除率,COD去除总量,产气总量和平均甲烷含率都为最高。其中,反应p H值为7.4～7.9,TS和VS去除率分别达到46.67%和26.64%,COD去除总量达到4029 mg,产气总量达到840 m L,甲烷含率为50.2%。此外,反应过程中氨氮浓度稳定在2.4～2.8 g·L-1,表明氨基酸菌渣处理过程中的氨氮产生得到了控制。Bacteria residue from Alanine production was treated by anaerobic digestion at 35℃. The effects of 5 food to microorganism ratio（ F / M 0. 5,1,2,4,8） on p H,TS,VS,COD,ammonia nitrogen,VFA,gas output and methane content,were compared. The results showed that the F / M of 2 obtained the best of TS and VS degradation rate,COD removal efficiency,total gas production and average methane content,for which the p H were 7. 4 ～ 7. 9,the TS and VS degradation rate reached 46. 67% and 26. 64% respectively,the total COD removal was 4029 mg,total gas production was 840 m L,and the biogas methane content was 50. 2%. The ammonia nitrogen concentration was maintained within 2. 4 ～ 2. 8g·L- 1,which indicated the ammonia production was effectively controlled in the anaerobic digestion process.

关 键 词：丙氨酸菌渣 厌氧消化 食微比 产甲烷能力 

分 类 号：S216.4[农业科学—农业机械化工程] X172[农业科学—农业工程]