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

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review

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Author(s)

Detail(s)

Original languageEnglish
Pages (from-to)2166-2176
Journal / PublicationWater Research
Volume42
Issue number8-9
Publication statusPublished - Apr 2008
Externally publishedYes

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. © 2007 Elsevier Ltd. All rights reserved.

Research Area(s)

  • Aerobic duration control, Nitrification, Nitritation, Nitrite pathway, Two-step nitrification model, Wastewater treatment

Bibliographic Note

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Citation Format(s)

Demonstration of nitrogen removal via nitrite in a sequencing batch reactor treating domestic wastewater. / Blackburne, Richard; Yuan, Zhiguo; Keller, Jürg.
In: Water Research, Vol. 42, No. 8-9, 04.2008, p. 2166-2176.

Research output: Journal Publications and ReviewsRGC 21 - Publication in refereed journalpeer-review