含固率和接种比对林可霉素菌渣厌氧消化的影响  

Influence of total solid content and ratio of inoculum to substrate on anaerobic digestion of lincomycin biowaste

作　　者：徐颂[1] 吴铎[1] 吕凡[1] 邵立明[1] 何品晶[1] 

机构地区：[1]同济大学环境科学与工程学院、污染控制与资源化研究国家重点实验室、长江水环境教育部重点实验室,上海200092

出　　处：《中国环境科学》2010年第3期362-368,共7页China Environmental Science

基　　金：国家“863”项目(2008AA062401);上海市优秀学科带头人计划(10XD1404200)

摘　　要：通过林可霉素菌渣的中温厌氧消化摇瓶实验,比较不同的含固率(3%、5%、8%、10%)和接种比(0.5、1、2、3)对菌渣产甲烷能力的影响,以确定菌渣厌氧消化的最优工艺条件.结果表明,在研究参数范围内,含固率越低,接种比越高,越有利于甲烷的产生;经过10d的培养,在含固率为3%、接种比为3时的工况中,菌渣的挥发性固体(VS)累计净产甲烷量最高,为106mL/g;而含固率>5%、接种比<2的工况均受到了不同程度的抑制.因此,林可霉素菌渣的厌氧消化应采用含固率<5%、接种比>2的液态发酵工艺,此条件既能保证厌氧消化不受消化产物(胺和挥发性有机酸)积累的抑制,也可以缓冲菌渣中残留林可霉素对消化微生物可能产生的抑制效应.Batch experiments were conducted to evaluate mesophilic anaerobic digestion of lincomycin biowaste.The performances of anaerobic digestion were compared at different total solid contents（3%, 5%, 8%, 10%） and ratios of inoculum to substrate（0.5,1, 2,3）.According to the analysis on gas and liquid phase, it is shown that the lower total solid content and the higher ratio of inoculum to substrate conduced to higher methane production.After 10 days＇ running, the treatment at 3% in total solid content and 3 in the ratio of inoculum to substrate shows the highest amount of net cumulative methane production from VS of 106 mL/g.Furthermore, the inhibition existed when the total solid content was higher than 5% and the ratio of inoculum to substrate was less than 2.Therefore, anaerobic digestion of lincomycin biowaste should be implemented at less than 5% of total solid content and the ratio of inoculum to substrate greater than 2, so that the inhibition by the residual lincomycin in biowaste and the product of anaerobic digestion（ammonia and volatile fatty acids） could be alleviated.

关 键 词：林可霉素菌渣 厌氧消化 含固率 接种比 产甲烷能力 

分 类 号：X705[环境科学与工程—环境工程]