文献类型：会议论文

英文题名：Synergistic Degradation of Propionate by Sulfate-Reducing Bacteria in a Single UASB Reactor

作者：Xu, Xin[1];Ding, Lei[1];Zhang, Juan[1];Xu, Yong-ai[1];Zhao, Yi-xian[1]

机构：[1]E China Univ Sci & Technol, State Environm Protect Key Lab Environm Risk Asse, Sch Resources & Environm Engn, Shanghai 200237, Peoples R China

会议论文集：International Conference on Environmental Science and Energy Engineering (ICESEE)

会议日期：JUL 26-27, 2015

会议地点：Phuket, THAILAND

语种：英文

外文关键词：Propionic acid accumulation; Organic loading rate; Sulfate-Reducing bacteria; COD/SO42-; Volatile fatty acids

摘要：By applying propionate as a sole carbon source, the maximum sludge organic loading rate (OLR) was discussed in a single UASB reactor, and the synergistic degradation of propionate by sulfate-reducing bacteria (SRB) was investigated in the experiment. The results showed that the maximum sludge OLR was 1.13 kgHPr-COD/(kgVSS.d), when propionate and COD removal efficiencies decreased to 63% and 52%, respectively. Acetic acid did not accumulate in UASB during propionic acid accumulation, and the metabolism of acetic acid by MPB to produce biogas was less affected. When influent COD/SO42- was 6 in the experiment, the propionic acid in UASB was reduced from 2041 mg/L to 484 mg/L by the synergistic degradation of SRB, and the propionic acid accumulation was eliminated.