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Review on Metabolic Mechanism of Glycogen-accumulating Organisms in Biological Phosphorus Removal System

Xu Wei

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Abstract

Enhanced biological phosphorus removal (EBPR) is widely accepted as one of the most economical and sustainable processes to remove phosphorus from wastewater.Poor performance or complete failure of EBPR processes has been substantially reported because of the proliferation of glycogen-accumulating organisms (GAOs) in the system.This paper presented the GAOs' metabolic mechanism and the impact factors, such as influent substrate, P/C ratio, pH value, temperature and SRT, on competition between GAOs and PAOs to better understand GAOs' characteristics and improve the performance and reliability of EBPR systems.

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What this paper is about

Enhanced biological phosphorus removal (EBPR) is widely accepted as one of the most economical and sustainable processes to remove phosphorus from wastewater.Poor performance or complete failure of EBPR processes has been substantially reported because of the proliferation of glycogen-accumulating organisms (GAOs) in the system.This paper presented the GAOs' metabolic mechanism and the impact factors, such as influent substrate, P/C ratio, pH value, temperature and SRT, on competition between GAOs and PAOs to better understand GAOs' characteristics and improve the performance and reliability of EBPR systems.

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Available abstract

Enhanced biological phosphorus removal (EBPR) is widely accepted as one of the most economical and sustainable processes to remove phosphorus from wastewater.Poor performance or complete failure of EBPR processes has been substantially reported because of the proliferation of glycogen-accumulating organisms (GAOs) in the system.This paper presented the GAOs' metabolic mechanism and the impact factors, such as influent substrate, P/C ratio, pH value, temperature and SRT, on competition between GAOs and PAOs to better understand GAOs' characteristics and improve the performance and reliability of EBPR systems.

Key concepts: Enhanced biological phosphorus removal, Phosphorus, Glycogen, Mechanism (biology), Wastewater, Sewage treatment, Substrate (aquarium), Biochemical engineering

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