Demonstration of nitrogen removal via nitrite in a sequencing batch reactor treating domestic wastewater

Blackburne, Richard, Yuan, Zhiguo and Keller, Jurg (2008) Demonstration of nitrogen removal via nitrite in a sequencing batch reactor treating domestic wastewater. Water Research, 42 8-9: 2166-2176. doi:10.1016/j.watres.2007.11.029


Author Blackburne, Richard
Yuan, Zhiguo
Keller, Jurg
Title Demonstration of nitrogen removal via nitrite in a sequencing batch reactor treating domestic wastewater
Journal name Water Research   Check publisher's open access policy
ISSN 0043-1354
Publication date 2008-04-01
Year available 2007
Sub-type Article (original research)
DOI 10.1016/j.watres.2007.11.029
Open Access Status DOI
Volume 42
Issue 8-9
Start page 2166
End page 2176
Total pages 12
Place of publication Kidlington, Oxford, UK
Publisher Pergamon Elsevier Science
Language eng
Subject C1
9699 Other Environment
090409 Wastewater Treatment Processes
Abstract Nitrogen removal via nitrite, as opposed to the traditional nitrate, may be beneficial for carbon-limited biological wastewater treatment plants. However, reliable termination of nitrification at nitrite (nitritation) has proved difficult in the treatment of domestic wastewater. In this study, nitritation was attained in a sequencing batch reactor (SBR) with pre-denitrification treating domestic wastewater (total Kjeldahl nitrogen (TKN) concentration of about 43 mgN L−1) by aerobic duration control. The aerobic duration control strategy terminates aeration upon completion of ammonium oxidation with accumulated nitrite still remaining. The SBR was purposefully operated such that the influence of other known selection factors for nitritation was absent. The process proved effective in achieving a steady state whereby over 80% nitritation was sustained. Investigation of the cause of nitritation by a calibrated ammonium and nitrite oxidation model showed aerobic duration control as the key factor leading to nitritation.
Keyword Nitritation
Wastewater treatment
Nitrification
Two-step nitrification model
Aerobic duration control
Nitrite pathway
Q-Index Code C1
Q-Index Status Provisional Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collection: Advanced Water Management Centre Publications
 
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Created: Wed, 15 Apr 2009, 22:59:32 EST by Suzanne Read on behalf of Advanced Water Management Centre