Influence of Organic Loading Rate on the Performance of a Two-Phase Pressurized Biofilm (TPB) System Treating Food Waste
文献类型: 外文期刊
第一作者: Li, Yeqing
作者: Li, Yeqing;Yan, Fang;Liu, Hong;Wang, Yafei;Jiang, Hao;Qian, Mingyu;Zhou, Hongjun;Liu, Hong;Nie, Hong;Qian, Mingyu
作者机构:
关键词: anaerobic digestion;organic loading rate;pressure;TPPB system;food waste
期刊名称:POLISH JOURNAL OF ENVIRONMENTAL STUDIES ( 影响因子:1.699; 五年影响因子:1.654 )
ISSN: 1230-1485
年卷期: 2017 年 26 卷 5 期
页码:
收录情况: SCI
摘要: A two-phase pressurized biofilm (TPPB) system, including a continuously stirred tank reactor (CSTR) and a pressurized biofilm anaerobic reactor (PBAR), was used to produce high calorific biogas without additional upgrading equipment. The influence of organic loading rate (OLR) on biogas and methane production performance was investigated. Three different OLR levels (4, 5, and 6 g-COD/L/d) were applied to the PBAR in sequence. The headspace pressure of PBAR was controlled at 1.0 MPa. Biogas production, gas composition, and process stability parameters were measured. Results found that the highest methane yield of 332.8 mL/g-COD was obtained at OLR of 5 g-COD/L/d. As compared to approximately 90% methane concentration at OLR of 3.1 g-COD/L/d, the methane content in produced biogas was only 76% at OLR of 5.0 g-COD/L/d. The pH value in the pressurized reactor has an important impact on the quality of produced biogas. Further study should focus on the solution strategies of maintaining suitable pH under higher pressure and higher OLR.
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