Denitrifying phosphate accumulating organisms and its mechanism of nitrogen and phosphorus removal.

Chunxia Zheng; Cerong Wang; Manman Zhang; Qifeng WU; Mengping Chen; Chenyu Ding; Tengxia HE

Return

Denitrifying phosphate accumulating organisms and its mechanism of nitrogen and phosphorus removal.

Author: Chunxia ZHENG ¹ ; Cerong WANG ¹ ; Manman ZHANG ¹ ; Qifeng WU ¹ ; Mengping CHEN ¹ ; Chenyu DING ¹ ; Tengxia HE ¹
Author Information

1. Key Laboratory of Plant Resource Conservation and Germplasm Innovation in Mountainous Region (Ministry of Education), Collaborative Innovation Center for Mountain Ecology & Agro-Bioengineering (CICMEAB), Institute of Agro-Bioengineering, College of Life Sciences, Guizhou University, Guiyang 550025, Guizhou, China.
Publication Type:Journal Article
Keywords: denitrifying phosphate accumulating organisms; eutrophication; mechanism; relationship; simultaneous nitrification and denitrification for phosphorus removal
MeSH: Phosphorus; Phosphates; Wastewater; Denitrification; Waste Disposal, Fluid; Nitrogen; Bioreactors/microbiology*; Nitrification; Sewage
From: Chinese Journal of Biotechnology 2023;39(3):1009-1025
CountryChina
Language:Chinese
Abstract: Water eutrophication poses great threats to protection of water environment. Microbial remediation of water eutrophication has shown high efficiency, low consumption and no secondary pollution, thus becoming an important approach for ecological remediation. In recent years, researches on denitrifying phosphate accumulating organisms and their application in wastewater treatment processes have received increasing attention. Different from the traditional nitrogen and phosphorus removal process conducted by denitrifying bacteria and phosphate accumulating organisms, the denitrifying phosphate accumulating organisms can simultaneously remove nitrogen and phosphorus under alternated anaerobic and anoxic/aerobic conditions. It is worth noting that microorganisms capable of simultaneously removing nitrogen and phosphorus absolutely under aerobic conditions have been reported in recent years, but the mechanisms remain unclear. This review summarizes the species and characteristics of denitrifying phosphate accumulating organisms and the microorganisms capable of performing simultaneous nitrification-denitrification and phosphorous removal. Moreover, this review analyzes the relationship between nitrogen removal and phosphorus removal and the underlying mechanisms, discusses the challenges of denitrifying phosphorus removal, and prospects future research directions, with the aim to facilitate process improvement of denitrifying phosphate accumulating organisms.