摘要
设计了污泥厌氧发酵反应器进行污泥产乙酸的小试研究。6个月的试验结果表明,pH值、接种底物浓度均对厌氧发酵产酸和产氢有较大影响。常温条件下当pH值为6.5时,其产氢率高达6.88 mL/gVS;当接种底物质量分数为10%、发酵时间为120 h时,其累积产氢量为1 122mL。与此同时,该厌氧发酵系统还具有较优的产酸特点,当未接种底物、发酵时间为120 h时其VFA含量仅为465 mg/L;当发酵底物质量分数为10%时,其VFA含量高达1 125 mg/L。
An anaerobic sludge fermentation reactor was designed to conduct a small-scale test for production of acetic acid from sludge. The results of 6-month experiment indicated that pH and substrate concentration had significant effect on acid and hydrogen production from anaerobic fermentation of sludge. Under normal temperature conditions, the hydrogen production rate was 6.88 mL/gVS at pH of 6.5, and the accumulative hydrogen production was 1 122 mL when the mass fraction of the substrate was 10%, and the fermentation time was 120 h. At the same time, the anaerobic fermentation system also had optimum acid production characteristic. The content of VFA was only 465 mg/L when the substrate was uninoculated, and the fermentation time was 120 h, but the content of VFA was 1 125 mg/L when the mass fraction of the substrate was 10%.
出处
《中国给水排水》
CAS
CSCD
北大核心
2014年第15期11-13,19,共4页
China Water & Wastewater
基金
国家自然科学基金资助项目(51206061)
吉林省教育厅"十二五"科技项目(吉教科合2014243)
吉林建筑大学青年发展科技基金资助项目(520111026)
住房和城乡建设部科技计划项目(2014-K7-019)
关键词
污泥厌氧发酵
产氢率
PH值
VFA
anaerobic fermentation of sludge
hydrogen production rate
pH
VFA
