无氧消化的细菌和藻类-细菌有氧颗粒污泥的重新颗粒化和性能
Xingyu Chen1, Xiaochuan Dong2, Jixiang Wang3
1Institute of Life and Environmental Sciences, University of Tsukuba, 1-1-1 Tennodai, Tsukuba, Ibaraki, 305-8572, Japan; Department of Mechanical Engineering, City University of Hong Kong, Kowloon Tang, Hong Kong.
Journal of environmental management
|January 31, 2025
概括
这项研究表明,重新颗粒化消化的细菌和藻类细菌污泥可以快速恢复废水处理的有氧颗粒污泥 (AGS) 系统,提高生物炼油厂的效率和可持续性.
科学领域:
- 环境科学 环境科学
- 微生物学 微生物学
- 生物技术是生物技术.
背景情况:
- 可持续的废水处理和污泥管理对生物炼油厂至关重要.
- 有氧颗粒污泥 (AGS) 系统需要长期运行以进行颗粒化.
- 研究污泥再颗粒化提供了一种方法来维持基于AGS的废水处理厂 (WWTP).
研究的目的:
- 评估无氧消化的细菌和藻类-细菌AGS重新颗粒化的可行性.
- 为了确定在连续运行中重新颗粒化的AGS的效率.
- 确定促进AGS重粒化和性能的因素.
主要方法:
- 细菌和藻类-细菌污泥的无氧消化.
- 在AGS系统中重新颗粒化消化的污泥.
- 基于去除污染物 (DOC,,) 的性能评估.
- 微生物社区分析和有机物质的表征.
主要成果:
- 在12天 (细菌AGS) 和6天 (藻类-细菌AGS) 中实现了快速重粒化.
- 重粒化的细菌AGS实现了>90%的溶解有机碳 (DOC) 去除.
- 重粒化的藻类-细菌AGS显示出高去除率 (>89%) 和去除率 (>56%).
- 芳香蛋白和类似富尔维酸的有机物促进了重新颗粒化;特定的细菌,如Erythromicrobium,Leptolyngbya和Rhodobacter增加了.
结论:
- 重粒化消化的AGS是一种可行的策略,以维持基于AGS的WWTP的持续运行.
- 这种方法提高了污泥的稳定性,沉降性和污染物去除效率.
- 这些发现支持推进可持续的生物炼油实践和循环生物经济.
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