| “热水解-高温厌氧消化”工艺处理高含固率剩余污泥的中试研究 |
| 摘要点击 4128 全文点击 1899 投稿时间：2014-02-23 修订日期：2014-03-31 |
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| 中文关键词 高含固率 剩余污泥 高温厌氧消化 热水解 |
| 英文关键词 high solid content waste activated sludge thermophilic anaerobic digestion thermal treatment |
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| 中文摘要 |
| 采取热水解（70℃）-高温厌氧消化工艺处理高固含率（8%~9%）的剩余污泥（中试）. 该工艺利用SRT为3 d的热水解促进细胞溶解以及高温厌氧消化加快污泥消化速率，有机物去除能力较强，并获得了较好的污泥稳定化效果. 当厌氧消化的SRT在20 d以上时，总VSS去除率达到42.22%以上，且VSS去除率与厌氧消化的SRT呈线性正相关，相关系数达到0.9153. 在实际应用中，推荐高温厌氧消化的SRT为25 d. 当停留时间接近时，本工艺与运行良好的传统污泥厌氧消化工程（含固率3%~5%）以及采用德国技术的高固消化工程的有机物去除率和甲烷产率相当. |
| 英文摘要 |
| A pilot-scale experiment about the process of "thermal pretreatment at 70℃/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 0.9153. 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. |
