城市污水污泥的综合性热水预处理:一种系统的方法
Abir Hamze1, Basem S Zakaria2, Mohamed Sherif Zaghloul3
1Department of Civil Engineering, Toronto Metropolitan University, Toronto, Ontario, M5B 2K3, Canada.
Journal of environmental management
|May 31, 2024
概括
废物活性污泥的水热预处理 (HTP) 显著增强无氧消化 (AD),提高了51%的甲产量,并改善了脱水能力. 这个过程支持过渡到资源回收设施.
科学领域:
- 环境工程 环境工程
- 生物技术是生物技术.
- 废物管理 废物管理
背景情况:
- 市政加厚废物活性污泥 (TWAS) 提出了处置方面的挑战.
- 无氧消化 (AD) 是有机废物处理的关键技术.
- 优化AD性能对于资源恢复至关重要.
研究的目的:
- 研究水热预处理 (HTP) 对TWAS的影响.
- 评估HTP治疗的TWAS与AD的整合.
- 评估对生物降解性,甲产量和消化物脱水性的影响.
主要方法:
- 水热预处理 (HTP) 应用于TWAS在170°C,3个酒吧30分钟.
- 半连续无氧消化 (AD) 生物反应器.
- 分析有机化合物溶解,化学氧气需求 (COD),挥发性固体 (VS) 破坏,甲产量和消化物脱水能力.
- 微生物社区分析.
主要成果:
- HTP增加了大分子有机化合物溶解率的41%.
- 用HTP处理的污泥的AD显示了50%的COD减少和63%的VS破坏增加.
- 甲产量增加了51%,达到176毫升/克的COD.
- 消化剂的脱水能力翻了一番,尽管聚合物剂量增加了.
- HTP增强了微生物对氨有毒性的抵抗力.
结论:
- HTP是一种有效的预处理,可以增强TWAS的AD.
- 结合的HTP-AD工艺改善了资源回收和污泥管理.
- 这种方法与循环经济原则相一致,用于废水处理厂 (WWTP) 过渡到资源回收设施 (RRF).
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