Monitoring the restart-up of an upflow anaerobic sludge blanket (UASB) reactor for the treatment of a soybean processing wastewater
2010
Dong, Fang | Zhao, Quan-Bao | Zhao, Jin-Bao | Sheng, Guo-Ping | Tang, Yong | Tong, Zhong- Hua | Yu, Han-Qing | Li, Yu-You | Harada, Hideki
Restart-up of an upflow anaerobic sludge blanket (UASB) reactor for the treatment of soybean processing wastewater was investigated. During the restart-up period, both chemical oxygen demand (COD) degradation efficiency and gas production rate increased. The specific methanogenic activity of anaerobic sludge and the fluorescence score for coenzyme F₄₂₀ in the effluent increased from 0.31 to 0.81g-CH₄-COD/gVSS/d and from 153 to 313, respectively. Among the various operating parameters the volatile fatty acids (VFA) and the CH₄ content were the first to become stable, which could be used as the main parameter for the reactor restart-up. The coenzyme F₄₂₀ also existed in the effluent and its concentration had a similar changing trend to the specific methanogenic activity value of the anaerobic sludge. Therefore, the F₄₂₀ fluorescence score in the effluent could be used to determine the methanogenic activity of anaerobic reactors.
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