Wu Jing, Wang Guang-qi, Cao Zhi-ping, Li Zhong-hua, Hu Yu-ying, Wang Kai-jun, Zu Jian-e
Huan Jing Ke Xue. 2014 Sep;35(9):3461-5.
A pilot-scale experiment about the process of "thermal pretreatment at 70°C/thermophilic anaerobic digestion" of waste activated sludge of high solid content (8% -9% ) was conducted. The process employed thermal treatment of 3 days to accelerate the hydrolysis and thermophilic digestion to enhance anaerobic reaction. Thus it was good at organic removal and stabilization. When the solid retention time (SRT) was longer than 20 days, the VSS removal rate was greater than 42. 22% and it was linearly correlated to the SRT of the aerobic digestion with the R2 of 0. 915 3. It was suggested that SRT of anaerobic digestion was 25 days in practice. VSS removal rate and biogas production rate of the pilot experiment were similar to those of the run-well traditional full-scale sludge anaerobic digestion plants (solid content 3% -5% ) and the plant of high solid content using German technique.
针对高固体含量（8%-9%）的废弃活性污泥开展了“70°C热预处理/嗜热厌氧消化”过程的中试实验。该过程采用3天的热处理以加速水解和嗜热消化，从而增强厌氧反应。因此，其在有机物去除和稳定化方面表现良好。当固体停留时间（SRT）超过20天时，挥发性悬浮固体（VSS）去除率大于42.22%，且与好氧消化的SRT呈线性相关，相关系数R2为0.915 3。建议实际厌氧消化的SRT为25天。中试实验的VSS去除率和沼气产率与运行良好的传统全规模污泥厌氧消化厂（固体含量3%-5%）以及采用德国技术的高固体含量工厂相似。
