Improve nitrogen removal of the biofilm single-stage PN/A process by optimizing the intermittent aeration strategy

Le, LT; Nghiem, LD; Bui, XT; Jahng, D

Improve nitrogen removal of the biofilm single-stage PN/A process by optimizing the intermittent aeration strategy

Le, LT Nghiem, LD Bui, XT Jahng, D

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Publisher:: ELSEVIER
Publication Type:: Journal Article
Citation:: Environmental Technology and Innovation, 2023, 30
Issue Date:: 2023-05-01

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Field	Value	Language
dc.contributor.author	Le, LT
dc.contributor.author	Nghiem, LD
dc.contributor.author	Bui, XT
dc.contributor.author	Jahng, D
dc.date.accessioned	2024-04-08T08:52:43Z
dc.date.available	2024-04-08T08:52:43Z
dc.date.issued	2023-05-01
dc.identifier.citation	Environmental Technology and Innovation, 2023, 30
dc.identifier.issn	2352-1864
dc.identifier.issn	2352-1864
dc.identifier.uri	http://hdl.handle.net/10453/177585
dc.description.abstract	This study demonstrated a novel technique to achieve partial nitritation/anammox (PN/A) to treat inorganic low-strength wastewater by using a 10 L continuous reactor equipped with fiber carriers. Aeration control was the key factor in single-state PN/A performance stability under oxygen-limiting conditions. Intermittent aeration was successfully adapted in this study to achieve over 80% nitrogen removal at the nitrogen loading rate of 0.12–0.16 kg N m−3 d−1. The nitrite-oxidizing bacteria activities were inhibited by intermittent aeration due to the alternate between aerobic to anoxic conditions. Ammonium-oxidizing bacteria (AOB) and anammox bacteria could be symbiotically supported within the biofilm with a specific activity of anammox bacteria that was 1.5 times higher than that of AOB. The biomass was efficiently retained by using fiber carriers. The results obtained from this study could bring the possibility of applying an energy-saving and efficient biofilm single-stage PN/A process in tropical regions.
dc.language	English
dc.publisher	ELSEVIER
dc.relation.ispartof	Environmental Technology and Innovation
dc.relation.isbasedon	10.1016/j.eti.2023.103078
dc.rights	info:eu-repo/semantics/openAccess
dc.subject	0502 Environmental Science and Management, 0907 Environmental Engineering, 1002 Environmental Biotechnology
dc.title	Improve nitrogen removal of the biofilm single-stage PN/A process by optimizing the intermittent aeration strategy
dc.type	Journal Article
utslib.citation.volume	30
utslib.for	0502 Environmental Science and Management
utslib.for	0907 Environmental Engineering
utslib.for	1002 Environmental Biotechnology
pubs.organisational-group	University of Technology Sydney
pubs.organisational-group	University of Technology Sydney/Faculty of Engineering and Information Technology
pubs.organisational-group	University of Technology Sydney/Faculty of Engineering and Information Technology/School of Civil and Environmental Engineering
pubs.organisational-group	University of Technology Sydney/Strength - CTWW - Centre for Technology in Water and Wastewater Treatment
utslib.copyright.status	open_access	*
dc.date.updated	2024-04-08T08:52:42Z
pubs.publication-status	Published
pubs.volume	30

Abstract:

This study demonstrated a novel technique to achieve partial nitritation/anammox (PN/A) to treat inorganic low-strength wastewater by using a 10 L continuous reactor equipped with fiber carriers. Aeration control was the key factor in single-state PN/A performance stability under oxygen-limiting conditions. Intermittent aeration was successfully adapted in this study to achieve over 80% nitrogen removal at the nitrogen loading rate of 0.12–0.16 kg N m−3 d−1. The nitrite-oxidizing bacteria activities were inhibited by intermittent aeration due to the alternate between aerobic to anoxic conditions. Ammonium-oxidizing bacteria (AOB) and anammox bacteria could be symbiotically supported within the biofilm with a specific activity of anammox bacteria that was 1.5 times higher than that of AOB. The biomass was efficiently retained by using fiber carriers. The results obtained from this study could bring the possibility of applying an energy-saving and efficient biofilm single-stage PN/A process in tropical regions.

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http://hdl.handle.net/10453/177585