生物除磷系统中积磷小月菌研究进展

doi:10.13560/j.cnki.biotech.bull.1985.2018-0485

摘要/Abstract

摘要： 水体中磷元素超标是引起水体富营养化的重要原因,而强化生物除磷（Enhanced biological phosphorus removal,EBPR）是污水除磷最行之有效的方法。聚磷菌（Phosphate accumulating organisms,PAOs）在EBPR中发挥重要作用,本文首先概述了典型PAOs在EBPR的作用和机理：厌氧条件下,典型PAOs分解Poly-P合成聚羟基烷酸（Polyhydroxyalkanoates,PHA）;好氧条件下,利用分解PHA产生的能量超量吸收磷合成Poly-P。其次评述了积磷小月菌在EBPR中的作用和机理：积磷小月菌作为PAOs的一种,在PAOs中所占比例较多,且有超强的磷去除能力,研究表明积磷小月菌体内存在PHA,但合成系统与典型PAOs不同;另外,积磷小月菌可直接利用葡萄糖作为碳源,这是典型PAOs不具备的,其超强除磷能力与积磷小月菌有效的磷转运能力和其Poly-P合成代谢能力有关。探讨并总结积磷小月菌在强化生物除磷系统中的作用和机理对进一步研究如何提高积磷小月菌的除磷效果有重要理论意义与应用价值。

关键词: 强化生物除磷, 积磷小月菌, 作用机理, 厌氧

Abstract: Excessive phosphorus in water is the main reason for eutrophication. Enhanced biological phosphorus removal（EBPR）is one of the most effective approaches for removing phosphorus from wastewater,and phosphate accumulating organisms（PAOs）play important roles in EBPR. Firstly,the status and mechanism of typical PAOs in EBPR are summarized,i.e.,under anaerobic conditions,typical PAOs decompose Poly-P to synthesize PHA;and while under aerobic conditions,typical PAOs absorb a large amount of phosphorus to synthesize Poly-P by utilizing energy from the decomposition of PHA. Secondly,the role and mechanism ofMicrolunatus phosphovorus in EBPR are reviewed,M. phosphovorus as one of the PAOs occupies a large proportion in PAOs and has super effective capacity of removing phosphorus. Researches reveal that there is PHA in M. phosphovorus,but the synthetic system of PHA is different from that in typical PAOs. In addition,M. phosphovorus can directly use glucose as a carbon source,which is not available in other typical PAOs. Besides,its superior capacity of removing phosphorus is related to the effective capacity for the transport of phosphorus and the anabolic ability of Poly-P. Discussing and summarizing the function and mechanism of M. phosphovorus in EBPR system is of significance for further studying how to increase the efficiency of removing phosphorus by M. phosphovorus in wastewater treatment.

Key words: enhanced biological phosphorus removal, Microlunatus phosphovorus, mechanism, anaerobic conditions

刘成, 姜天翼, 王静, 陈文兵, 王珊珊, 钟传青. 生物除磷系统中积磷小月菌研究进展[J]. 生物技术通报, 2018, 34(11): 91-96.

LIU Cheng, JIANG Tian-yi, WANG Jing, CHEN Wen-bing, WANG Shan-shan, ZHONG Chuan-qing. A Review on Microlunatus phosphovorus in Enhanced Biological Phosphorus Removal System[J]. Biotechnology Bulletin, 2018, 34(11): 91-96.

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