摘要
生物强化除磷(EBPR)工艺会产生大量的富磷污泥。富磷污泥中的聚磷菌(PAOs)在厌氧消化过程中吸收外界碳源并释放大量正磷,高浓度的磷会对厌氧消化系统中厌氧微生物的代谢产生影响,使得消化过程更加复杂。富磷污泥厌氧消化过程会产生磷、氮、有机物和金属离子等物质,其中磷的回收利用可以减少磷矿资源的开采,从而实现磷资源的可持续循环利用。因此,研究富磷污泥厌氧消化过程中磷的变化规律,既为厌氧消化系统的稳定运行提供理论依据,又为磷的资源化回收利用提供参考。对富磷污泥厌氧消化释磷的相关研究成果以及磷回收进行分析和总结,并提出了相应的研究方向。
Enhanced biological phosphorus removal （EBPR） process would produced a large amount of phos phorusrich waste activated sludge. Phosphorus accumulating organisms （PAOs） existing in the waste activated sludge took up carbon sources and released excessive phosphate during the anaerobic digestion process. High concen trations of phosphate influenced the metabolism of anaerobic bacteria in the digestion system, made anaerobic digestion process more complex. During the anaerobic digestion of phosphorusrich sludge, phosphorus, nitrogen, organic matter and metal ions were discharged. The reuse of phosphorus from anaerobic digestion could reduce the mining of phos phate resource, and make phosphorus utilization sustainable. The research of phosphate variation during the phos phorusrich sludge anaerobic digestion not only provided theory basis for stable anaerobic digestion, but also gave the support for phosphorus recycling. In this study, the results of phosphorusrich waste activated sludge anaerobic diges tion as well as phosphorus reclamation were summarized, and some related measures for the development direction were advanced.
出处
《环境污染与防治》
CAS
CSCD
北大核心
2014年第4期75-79,共5页
Environmental Pollution & Control
基金
国家"863计划"课题项目(No.2011AA060902)
上海市科委国际合作项目(No.11230700700)
关键词
富磷污泥厌氧消化释磷机制
磷资源化
phosphorus-rich sludge
anaerobic digestion
phosphorus release mechanism
phosphorus reclamation
