废弃活性污泥的预处理由液压冲击机的旋转发电机进行
Sabina Kolbl Repinc1, Gašper Rak2, Blaž Stres3
1University of Ljubljana, Faculty of Civil and Geodetic Engineering, Jamova 2, 1000 Ljubljana, Slovenia; National Institute of Chemistry, Hajdrihova 19, 1000 Ljubljana, Slovenia.
Ultrasonics sonochemistry
|March 16, 2025
概括
这项研究引入了一种新的污泥预处理装置,该装置使用液压冲击波来改善甲生产. 液压冲击的旋转发电机 (RGHS) 有效地分解废物活性污泥,降低粘度并提高生物气产量.
科学领域:
- 环境工程 环境工程
- 生物技术是生物技术.
- 流体力学 流体力学 流体力学
背景情况:
- 废物活性污泥 (WAS) 处理由于其复杂的结构和高粘度而带来挑战.
- 有效的污泥预处理对于提高无氧消化过程中的沼气生产至关重要.
- 现有的预处理方法通常需要大量的能量投入或效率较低.
研究的目的:
- 为了研究一种使用周期性冲击波生成的新型污泥预处理装置的水力动力性能.
- 评估液压冲击旋转发生器 (RGHS) 在分解废物活性污泥中的有效性.
- 评估RGHS预处理对污泥特性和随后的甲生产的影响.
主要方法:
- 使用了一种新的污泥预处理装置,即液压冲击的旋转发电机 (RGHS).
- 该装置通过使用旋转刀片对厚化废物活性污泥产生周期性冲击波.
- 实验是以两种撞击速度 (44 m/s和70 m/s) 进行的,经过30个液体通道.
主要成果:
- 在70米/秒的撞击速度下,RGHS实现了41.3%的分解度 (DD),其特定能耗 (SEC) 为10.4千瓦时/公斤的sCOD.
- 与未经加工的污泥相比,甲产量在70 m/s时提高了9.0%,在44 m/s时提高了33.1%.
- 污泥粘度降低了大约60%,观察到的结构变化包括颗粒大小减少和细胞壁损伤.
结论:
- 新型RGHS装置展示了高效的污泥分解,并显著提高了甲生产.
- RGHS为现有的预处理方法提供了一个有前途的替代方案,可以在较低的能源消耗下实现高分解.
- 观察到的WAS结构变化证实了液压冲击波预处理的有效性.
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