摘要
针对上海市湿垃圾处理厂厨余垃圾残渣及当地芦笋秸秆资源化利用率低的问题,对厨余垃圾残渣与芦笋秸秆协同干式厌氧消化产甲烷进行了批式实验研究。结果表明:当设置40 g/L有机负荷(以VS计)且各实验组的C/N分别为10.3、13.4、16.5、19.6、22.7进行厨余垃圾残渣与芦笋秸秆协同干式厌氧实验时,C/N为13.4的实验组获得的最大比产甲烷速率(以VS计)最高,为18.01 mL/(g·d),这时芦笋秸秆占整个进料原料的干基质量比为44.44%。微生物群落结构分析结果表明:各实验组在属水平上主要细菌为norank_f_norank_o_norank_c_norank_p_Firmicutes、norank_f_ST-12K33、Fastidiosipila、norank_f_Dethiobacteraceae等;在属水平上主要古菌为产甲烷菌Methanobacterium和Methanosaeta,且C/N为10.3的纯厨余实验组的氢型产甲烷菌Methanobacterium的丰度明显低于其他协同干式厌氧实验组。
To solve the problem of low resourcelization rate of kitchen waste residue of the wet-type waste treatment plant and asparagus straw in Shanghai,a batch-scale experimental study on dry anaerobic co-digestion of kitchen waste residue and asparagus straw were carried out.The results showed that when the organic loading rates was set for 40 g/L(calculated in VS)and the C/N was 10.3,13.4,16.5,19.6,22.7,respectively,the highest maximum specific methanogenic activity(SMA)reached 18.01 mL/(g·d)(calculated in VS)when the C/N was 13.4,and the asparagus straw accounted for the dry mass ratio of the whole feedstock was 44.44%.The results of microbial community structure analysis showed that the main bacteria on the genus level in each experimental group were norank_f_norank_o_n-orank_c_norank_p_Firmicutes,norank_f_ST-12K33,Fastidiosipila,norank_f_Dethiobacteracea-e,etc.The main archaea on genus level were Methanobacterium and Methanosaeta,and the abundance of hydrogen-type methanogens(Metha-nobacterium)in the kitchen waste mono-digestion experimental group with a C/N of 10.3 was significantly lower than that of other dry anaerobic co-digestion experimental groups.
作者
吴健
胡念
华银锋
乐亮亮
陈卫华
WU Jian;HU Nian;HUA Yinfeng;LE Liangliang;CHEN Weihua(Shanghai Liming Resources Reuse Co.Ltd.,Shanghai 201209;Shanghai Engineering Research Center of Biotransformation of Organic Solid Waste,Shanghai 200241;Shanghai Pudong Environmental Protection Development Co.Ltd.,Shanghai 200127)
出处
《环境卫生工程》
2023年第1期22-32,共11页
Environmental Sanitation Engineering
基金
华东师范大学上海有机固废生物转化工程技术研究中心2021年度开放课题(SERC2021C09)。
关键词
厨余垃圾残渣
芦笋秸秆
协同干式厌氧消化
产甲烷
kitchen waste residue
asparagus straw
dry anaerobic co-digestion
methane production
