强化生物除磷系统的微生物学及生化特性研究进展  

Review on the Microbiological and Biochemical Characteristics of Enhanced Biological Phosphorus Removal System

作　　者：徐立杰[1] 郭春艳[1] 彭永臻[1] 袁志国[2] 

机构地区：[1]北京工业大学环境与能源工程学院,北京100124 [2]澳大利亚昆士兰大学高级废水管理中心

出　　处：《应用与环境生物学报》2011年第3期427-434,共8页Chinese Journal of Applied and Environmental Biology

基　　金："十一五"国家科技支撑计划重点项目(No.2006BAC19B03)资助~~

摘　　要：综述了强化生物除磷(Enhanced biological phosphorus removal,EBPR)系统的微生物学和生化特性两方面的最新研究进展.在微生物学方面,归纳了EBPR系统中的主要微生物——聚磷菌、聚糖菌、反硝化聚磷菌的分类及相互之间的竞争和联系.具有聚磷功能的微生物种类繁多,目前普遍认为Accumulibacter是一种典型的聚磷菌,在各种规模的EBPR系统中均不同程度的存在.关于聚磷菌和聚糖菌的联系、反硝化聚磷菌的分类问题存在争论.在生化特性方面,归纳了聚磷菌体内三大聚合物——糖原、聚β-羟基烷酸脂和聚合磷酸盐与聚磷菌代谢功能的关系.聚磷菌厌氧阶段的还原力由糖酵解和有机底物TCA循环共同提供,其比例受种群结构和实验条件影响.糖原根据不同菌株厌氧阶段的降解途径有所不同,但是对细胞都起到调节氧化平衡的作用.聚β-羟基烷酸脂的组成由有机底物决定,丙酸为底物时4种单体均可检测出来.聚磷菌厌氧释磷的能量来自聚磷分解和糖原分解,耗能受环境条件影响.The microbiological and biochemical characteristics of enhanced biological phosphorus removal（EBPR） process was summarized.With respect to the microbiology,the competition and relationship among the main microbes in the system,including poly-phosphate accumulating organisms（PAOs）,glycogen accumulating organisms（GAOs） and denitrified PAOs（DPAOs） were concluded.A wide variety of PAOs were separated from the EBPR system and the Accumulibacter was considered a typical PAO,existing in all kinds of EBPR systems.There was still controversy concerning the relationship between PAOs and GAOs and the classification of DPAOs.With respect to the biochemistry,the relevance between the intracellular polymers and the metabolic function was concluded.The reducing power in the anaerobic phase was provided both by the TCA circulation and the glycolysis process,influenced by the population structure and experiment condition.The degradation of glycogen was different when the bacterial strain was different and the glycogen was the regulator of the redox equilibrium in the cell.The composition of poly-β-hydroxyalkanoates（PHAs） was determined by the organic substrate,and when propionic acid was the substrate,four monomers of PHAs could be detected.The power used in the anaerobic P-releasing was derived from the decomposition of polyphosphate and glycogen,while the amount of power needed was influenced by experiment condition.Fig 5,Tab 3,Ref 37

关 键 词：强化生物除磷 聚磷菌 聚糖菌 反硝化聚磷菌 还原力 

分 类 号：X172[环境科学与工程—环境科学] X703