Abstract

The review examines the microbiological aspects of the biological phosphorus removal from wastewater. The history of the development of biotechnology and the discovery of the physiological group of phosphate-accumulating organisms (PAOs), which biologically remove phosphorus via the phosphate uptake and storage in the form of intracellular polyphosphates, is briefly described. PAOs are characterized by a cyclic type of metabolism that occurs when the anaerobic/aerobic conditions cyclically change. Under anaerobic conditions, PAOs uptake and store organic compounds through the energy of degradation of intracellular polyphosphates. When anaerobic conditions change to aerobic or an alternative electron acceptor appears, PAOs uptake phosphates and synthesize intracellular polyphosphates using the intracellular polymeric sources of carbon and energy accumulated under anaerobic conditions. The main representatives of the PAOs, their metabolic models, and physiological characteristics are described. The basic principles of the implementation of biotechnology used in the practice of wastewater treatment for phosphorus and other nutrients are considered.

中文翻译：

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富磷酸盐细菌在废水生物除磷中的作用

摘要

审查审查了废水中生物除磷的微生物学方面。简要介绍了生物技术的发展历史和发现了磷酸盐累积生物（PAO）的生理群体，该生物通过磷的吸收和以细胞内多磷酸盐的形式储存磷，从而生物去除磷。PAO的特征是厌氧/好氧条件周期性变化时发生的代谢循环类型。在厌氧条件下，PAO通过细胞内多磷酸盐的降解能吸收和存储有机化合物。当厌氧条件变为有氧或出现其他电子受体时，PAO吸收磷酸盐，并利用细胞内聚合物的碳源和在厌氧条件下积累的能量来合成细胞内多磷酸盐。描述了PAO的主要代表，它们的代谢模型和生理特征。考虑了用于磷和其他养分废水处理的生物技术实施的基本原理。