摘要
为了提升污泥的厌氧消化效率,文章从改善原料碳氮比入手,在温度为35℃,挥发性固体(VS)浓度为4%条件下,将果蔬废弃物与污泥按不同VS比例复配,并进行协同厌氧消化产甲烷潜力实验。实验结果表明:在厌氧消化过程中,不同配比实验组的pH值、氨氮浓度和挥发性脂肪酸浓度均在适宜的范围内;不同配比实验组的累积产甲烷量由高到低依次为6∶4,5∶5,4∶6,3∶7,8∶2,7∶3,2∶8,1∶9和9∶1,其分别比纯污泥组提高了516%,485%,430%,360%,335%,330%,290%,144%和-64%。通过Gomperzt修正方程拟合发现,果蔬废弃物与污泥协同厌氧消化的最佳VS配比为6∶4,此时体系的单位VS理论甲烷产率和单位VS最大甲烷日产量分别为114.05mL/g和14.61 mL/(g·d),分别比纯污泥组提高了422%和353%。
In order to improve the efficiency of anaerobic digestion of sludge, the article starts with improving the carbon-nitrogen ratio of the raw materials. Under the condition of a temperature of 35 ℃ and a volatile solids(VS) concentration of 4%, the fruit and vegetable waste and the sludge were recovered in different VS ratios. And the experiment carried out on the potential of synergistic anaerobic digestion for methane production. The results showed that during the digestion process, pH value, total ammonia nitrogen and total volatile fatty acid content of all groups varied in the appropriate ranges;the cumulative methane production of the experimental groups with different ratios was from high to bottom in order 6∶4, 5∶5, 4∶6, 3∶7, 8∶2, 7∶3, 2∶8, 1∶9 and 9∶1, which were 516%, 485%, 430%, 360%, 335%, 330%, 290%, 144% and-64% reduction corresponding higher than that of the pure sludge group. It was found that the maximum methane production VS ratio of FVW and SW synergistic digestion was 6∶4 based on the modified Gomperzt equation fitted curve, with theoretical unit VS methane production rate and actual maximum daily methane production were 114.05 m L/g and 14.61 m L/(g·d) respectively, which are 422% and 353%higher than SW.
作者
谢炎东
蒋心茹
闫志英
刘杨
吕青阳
许力山
陈静
刘明刚
张忠武
宾石玉
Xie Yandong;Jiang Xinru;Yan Zhiying;Liu Yang;Lv Qingyang;Xu Lishan;Chen Jing;Liu Minggang;Zhang Zhongwu;Bin Shiyu(College of Life Science,Guangxi Normal University,Guilin 541006,China;Chengdu Institute of Biology,Chinese Academy of Sciences,Chengdu 610041,China;Key Laboratory of Environmental and Applied Microbiology of Chinese Academy of Sciences,Chengdu 610041,China;Sichuan Water Affairs Investment Co.,Ltd.,Chengdu 610041,China)
出处
《可再生能源》
CAS
CSCD
北大核心
2022年第1期8-14,共7页
Renewable Energy Resources
基金
四川省区域创新合作项目(2020YFQ0026)
中国科学院“西部之光”交叉团队项目(2019XBZG-JCTD-ZDSYS-001)
2019年中国科学院科技服务网络计划项目(KFJ-STS-QYZD-098)
山西省重点研发计划项目(201903D211013)
桂林市科学研究与技术开发计划项目(20190205)。
关键词
协同厌氧消化
剩余污泥
果蔬废弃物
混合比例
产气实验
anaerobic co-digestion
sludge waste
fruit and vegetable waste
mixing ratio
gas production experiment
作者简介
通讯作者:宾石玉(1963-),男,博士,教授,研究方向为动物营养学.E-mail:binsy@gxnu.edu.cn。
