摘要
为了使餐厨垃圾制乙醇过程中产生的糖化残渣得到进一步资源化利用,采用餐厨垃圾糖化残渣制甲烷的工艺,比较了不同污泥接种比例对其糖化残渣的甲烷产量、有机酸含量及组成、碱度、pH等的影响。结果表明:当接种污泥/糖化残渣(以VS计)=1.0时,糖化残渣厌氧消化效果最佳,累积甲烷产量(以VS计)和有机物(VS)去除率分别达到159.84 mL/g和57.86%。将丙酸/乙酸控制在<0.10是本研究厌氧发酵稳定进行的必要条件,总挥发性有机酸(TVFA)/碱度介于0.40~1.40时,甲烷产率相对较高。
In order to make further utilization of the saccharification residue produced in the process of ethanol production from food waste,the process of producing methane from the saccharification residue of food waste was adopted.And the effects of different sludge inoculation ratios on methane yield,content and composition of organic acid,alkalinity as well as pH of the saccharization residue were compared.The results demonstrated that the optimum effect of anaerobic digestion of saccharified residue was obtained when the ratio of inoculation sludge to saccharification residue(in VS)was 1.0,and the cumulative methane yield(in VS)and organic matter(in VS)removal rate reached 159.84 mL/g and 57.86%,respectively.It is a necessary condition for the stable anaerobic fermentation that controlled the ratio of propionic acid to acetic acid less than 0.10.When the rate of total volatile fatty acids(TVFA)to alkalinity was between 0.40 and 1.40,the methane production rate was relatively high.
作者
高明
项娟
张笑
汪群慧
孙晓红
宋娜
常强
GAO Ming;XIANG Juan;ZHANG Xiao;WANG Qunhui;SUN Xiaohong;SONG Na;CHANG Qiang(University of Science and Technology Beijing,Beijing 100083;Beijing Key Laboratory on Resource-oriented Treatment of Industrial Pollutants,Beijing 100083;Beijing Agro-Biotechnology Research Center,Beijing 100097;Tianjin College,University of Science and Technology Beijing,Tianjin 301830)
出处
《环境卫生工程》
2021年第4期22-28,共7页
Environmental Sanitation Engineering
基金
国家重点研发计划项目(2018YFC1900903)
北京市自然科学基金项目(8192028)
天津市科技计划项目(18YFHBZC00020)。
关键词
糖化残渣
乙醇
甲烷
污泥接种比例
saccharification residue
ethanol
methane
sludge inoculation ratio
作者简介
第一作者:高明(1984—),讲师,主要从事有机固体废物生物处理技术及其资源化、能源化利用研究。E-mail:gaoming402@ustb.edu.cn。;通信作者:汪群慧(1959—),教授,主要从事固体废物资源化处理与处置技术研究。E-mail:wangqh59@sina.com。
