摘要
废水强化生物除磷(EBPR)系统中,聚磷菌(PAOs)是主要的除磷微生物,其中Accumulibacter是目前公认的主要一类PAOs,含有多个进化枝,且代谢特性存在差异。虽然PAOs尚无法独立培养,但可以在某些条件下选择性富集某一类进化枝的Accumulibacter。对废水EBPR系统内检测到的Accumulibacter具体分枝及其富集的条件进行了总结,并归纳了不同分枝的代谢特性;还分析了Accumulibacter主要分枝与其它菌群在EBPR系统中的相互关系,可为深入了解废水生物除磷微生理生态学、解决同步脱氮除磷污水处理系统的除磷性能恶化、出水水质波动等问题提供支持。
Phosphorus accumulating organisms(PAOs) are the group of microorganisms primarily responsible for removing phosphorus from wastewater in the Enhanced Biological Phosphorus Removal(EBPR) system. Accumulibacter is currently recognized as the main class of PAOs, which contains several clades. Their metabolic characteristics are different. Although PAOs can not be cultured independently, some kind of clades can be selectively enriched under certain conditions. This paper summarized the specific clades and enrichment conditions of Accumulibacter in the EBPR system, and the metabolic characteristics of different clades were analyzed. The relationship between the main clade of Accumulibacter and other microorganisms in the EBPR system was also analyzed in order to provide reference for deeply understanding of biological phosphorus removal microphysiological ecology, as well as solving the problem of deterioration of phosphorus removal or effluent fluctuation in the simultaneous nitrogen and phosphorus removal wastewater treatment systems.
引文
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