A Review on Microlunatus phosphovorus in Enhanced Biological Phosphorus Removal System

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

Abstract

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

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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