餐厨垃圾中温与中高温过渡区厌氧产沼效率研究

宫亚斌; 姚建刚; 谭婧

doi:10.13205/j.hjgc.202203020

餐厨垃圾中温与中高温过渡区厌氧产沼效率研究

doi: 10.13205/j.hjgc.202203020

杭州能源环境工程有限公司, 杭州 310020

基金项目:

2021年度浙江省省级重点研发计划(2021C03024)

详细信息

通讯作者:
宫亚斌(1986-),男,工程师,主要研究方向城乡固体废弃物厌氧发酵和沼液资源化处理等。gongyabin@heee-biogas.com

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出版历程
- 收稿日期: 2021-07-22
- 网络出版日期: 2022-07-07

ANAEROBIC BIOGAS PRODUCTION EFFICIENCY OF FOOD WASTE AT THE MEDIUM TEMPERATURE AND INTERMEDIATE TEMPERATURE ZONE

Hangzhou Energy&Environmental Engineering Co., Ltd, Hangzhou 310020, China

摘要

摘要: 以餐厨垃圾为研究对象,采用连续动态发酵试验,探究中温和中高温过渡区下餐厨垃圾连续厌氧发酵产沼及其微生物分布情况。结果表明:餐厨垃圾连续发酵试验中,在同等有机负荷下,中高温过渡区温度(44℃)下餐厨垃圾产沼量、甲烷浓度及发酵液关键参数等均明显优于中温(38℃)发酵温度下的发酵系统,其产沼率更高、发酵参数更为稳定。高通量微生物测序发现,44℃和38℃发酵体系中,细菌的群落结构及丰富度差异显著,而古细菌的群落结构及丰富度则差异不显著,表明餐厨垃圾在44℃发酵温度下的发酵性能优于38℃的主要原因在于其更加丰富的发酵型细菌的存在促进了发酵过程水解、产酸阶段的进一步进行,从而利于甲烷微生物的消化利用。
- 餐厨垃圾 /
- 厌氧发酵 /
- 中高温过渡区温度 /
- 微生物群落
Abstract: This paper took the food waste as the research object, and conducted the continuous dynamic fermentation experiment to explore the biogas production and microbial distribution of the food waste in the transition zone between medium and high temperature. The results showed that under the same organic load, the biogas yield, methane concentration and key parameters of fermentation broth were significantly better than those of the fermentation system under the medium temperature (38℃) fermentation temperature, with higher biogas yield and more stable fermentation parameters. Through high-throughput microbial sequencing, it was found that there were significant differences in bacterial community structure and richness between 44℃ and 38℃ fermentation system, while there were no significant differences in archaea community structure and richness, which indicated that the main reason why the fermentation temperature of food waste at 44℃ was better than that at 38℃, was that more abundant fermentative bacteria promoted hydrolysis stage and acid production stage. That was conducive to the digestion and utilization of methane microorganism.
- food waste /
- anaerobic fermentation /
- intermediate temperature zone /
- microbial community

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