| 水热处理泔脚脱油与产物消化性能变化 |
| 摘要点击 2046 全文点击 1277 投稿时间：2008-06-05 修订日期：2008-09-04 |
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| 中文关键词 泔脚废物 水热液化 厌氧消化 生化甲烷势 能量衡算 |
| 英文关键词 canteen waste hydrothermal liquidization anaerobic digestion biochemical methane potential energy balance |
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| 中文摘要 |
| 水热预处理泔脚废物，测定生物化学甲烷势(BMP)，研究废物脱油、水解和消化性能的变化.结果表明，预处理加速废物的溶解和有机物的水解.随着反应温度升高，产物pH 降低，SCOD 和VFA浓度显著升高.150℃、 60 min预处理后，可浮油含量增加并达到较好的分离效果，消化过程在4～6 d内完成，降解速率提高1倍.170℃预处理后4 d生物气产量最高，继续提高温度会降低产物甲烷势.能量衡算分析表明，优化预处理能耗合理. |
| 英文摘要 |
| Canteen waste was hydrothermal pretreated to investigate the characters of degreasing，hydrolysis and digestibility by biochemical methane assays.Liquidization and hydrolysis were enhanced in hydrothermal pretreatment.pH of hydrolysate decreased，and SCOD and VFA increased significantly followed by increasing hydrothermal temperature.Floatable grease increased to appropriate ratio for removal，and digestion process completed in 4 days to 6 days with double degradation rate after pretreatment at 150℃ for 60 minutes.The 4-day incubation biogas yield was maximum after pretreatment at 170℃，and the methane potential，however，was decreased at higher pretreatment temperature.Energy consumption of optimized pretreatment was recoverable with energy balance analysis. |
