The effect of nitrite correction on the evaluation of the rate of nitrate utilization under anoxic conditions

Seval Sözen; Derin Orhon

doi:10.1002/(SICI)1097-4660(199908)74:8<790::AID-JCTB106>3.0.CO;2-C

The effect of nitrite correction on the evaluation of the rate of nitrate utilization under anoxic conditions

Seval Sözen^*, Derin Orhon

^*Corresponding author for this work

Department of Environmental Engineering

Istanbul Technical University

Research output: Contribution to journal › Article › peer-review

47 Citations (Scopus)

Abstract

The nitrogen utilization requirement (NUR) test is a useful respirometric procedure for the assessment of major kinetic constants in activated sludge systems designed for nitrogen removal. The electron transfer mechanism of nitrogenous compounds often involves significant nitrite accumulation which impairs the accuracy of the NUR test. Experimental results revealed no meaningful correlation between nitrite accumulation and the initial nitrate concentration or the food/microorganism (F/M) ratio. Significant impact of nitrite accumulation was observed both on the assessment of the readily biodegradable COD component, the correction factor for anoxic growth and the denitrification rates applicable to domestic sewage and a number of industrial wastewaters.

Original language	English
Pages (from-to)	790-800
Number of pages	11
Journal	Journal of Chemical Technology and Biotechnology
Volume	74
Issue number	8
DOIs	https://doi.org/10.1002/(SICI)1097-4660(199908)74:8<790::AID-JCTB106>3.0.CO;2-C
Publication status	Published - Aug 1999

Keywords

Activated sludge
Anoxic conditions
Heterotrophic biomass
Nitrogen utilization rate
Respirometry

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1002/(SICI)1097-4660(199908)74:8<790::AID-JCTB106>3.0.CO;2-C

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abstract = "The nitrogen utilization requirement (NUR) test is a useful respirometric procedure for the assessment of major kinetic constants in activated sludge systems designed for nitrogen removal. The electron transfer mechanism of nitrogenous compounds often involves significant nitrite accumulation which impairs the accuracy of the NUR test. Experimental results revealed no meaningful correlation between nitrite accumulation and the initial nitrate concentration or the food/microorganism (F/M) ratio. Significant impact of nitrite accumulation was observed both on the assessment of the readily biodegradable COD component, the correction factor for anoxic growth and the denitrification rates applicable to domestic sewage and a number of industrial wastewaters.",

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AU - Orhon, Derin

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AB - The nitrogen utilization requirement (NUR) test is a useful respirometric procedure for the assessment of major kinetic constants in activated sludge systems designed for nitrogen removal. The electron transfer mechanism of nitrogenous compounds often involves significant nitrite accumulation which impairs the accuracy of the NUR test. Experimental results revealed no meaningful correlation between nitrite accumulation and the initial nitrate concentration or the food/microorganism (F/M) ratio. Significant impact of nitrite accumulation was observed both on the assessment of the readily biodegradable COD component, the correction factor for anoxic growth and the denitrification rates applicable to domestic sewage and a number of industrial wastewaters.

KW - Activated sludge

KW - Anoxic conditions

KW - Heterotrophic biomass

KW - Nitrogen utilization rate

KW - Respirometry

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The effect of nitrite correction on the evaluation of the rate of nitrate utilization under anoxic conditions

Abstract

Keywords

UN SDGs

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