Partial nitrification to nitrite using low dissolved oxygen concentration as the main selection factor

Richard Blackburne; Zhiguo Yuan; Jürg Keller

doi:10.1007/s10532-007-9136-4

Partial nitrification to nitrite using low dissolved oxygen concentration as the main selection factor

Richard Blackburne
, Zhiguo Yuan
, Jürg Keller

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

432 Citations (Scopus)

Abstract

Partial nitrification to nitrite (nitritation) can be achieved in a continuous process without sludge retention by wash out of nitrite oxidising bacteria (NOB) while retaining ammonia oxidising bacteria (AOB), at elevated temperatures (the SHARON process) and, as demonstrated in this paper, also at low dissolved oxygen (DO) concentrations. Enriched AOB was attained at a low DO concentration (0.4 mg l^-1) and a dilution rate of 0.42 day ^-1 in a continuous process. A higher oxygen affinity of AOB compared to NOB seemed critical to achieving this. This was verified by determining the oxygen half saturation constant, K _o, with similar oxygen mass transfer resistances for enriched AOB and NOB as 0.033 ± 0.003 mg l ^-1 and 0.43 ± 0.08 mg l^-1, respectively. However, the extent of nitritation attained was found to be highly sensitive to process upsets. © 2007 Springer Science+Business Media B.V.

Original language	English
Pages (from-to)	303-312
Journal	Biodegradation
Volume	19
Issue number	2
DOIs	https://doi.org/10.1007/s10532-007-9136-4
Publication status	Published - Apr 2008
Externally published	Yes

Bibliographical note

Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

Funding

This work was funded by the Australian Research Council, ARC Project DP0210502.

UN SDGs

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

SDG 6 Clean Water and Sanitation

Research Keywords

Activated sludge
Continuous process
Dissolved oxygen concentration
Nitritation
Nitrite oxidising bacteria

Policy Impact

Cited in Policy Documents

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title = "Partial nitrification to nitrite using low dissolved oxygen concentration as the main selection factor",

abstract = "Partial nitrification to nitrite (nitritation) can be achieved in a continuous process without sludge retention by wash out of nitrite oxidising bacteria (NOB) while retaining ammonia oxidising bacteria (AOB), at elevated temperatures (the SHARON process) and, as demonstrated in this paper, also at low dissolved oxygen (DO) concentrations. Enriched AOB was attained at a low DO concentration (0.4 mg l-1) and a dilution rate of 0.42 day -1 in a continuous process. A higher oxygen affinity of AOB compared to NOB seemed critical to achieving this. This was verified by determining the oxygen half saturation constant, K o, with similar oxygen mass transfer resistances for enriched AOB and NOB as 0.033 ± 0.003 mg l -1 and 0.43 ± 0.08 mg l-1, respectively. However, the extent of nitritation attained was found to be highly sensitive to process upsets. {\textcopyright} 2007 Springer Science+Business Media B.V.",

keywords = "Activated sludge, Continuous process, Dissolved oxygen concentration, Nitritation, Nitrite oxidising bacteria",

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doi = "10.1007/s10532-007-9136-4",

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AU - Blackburne, Richard

AU - Yuan, Zhiguo

AU - Keller, Jürg

N1 - Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

PY - 2008/4

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N2 - Partial nitrification to nitrite (nitritation) can be achieved in a continuous process without sludge retention by wash out of nitrite oxidising bacteria (NOB) while retaining ammonia oxidising bacteria (AOB), at elevated temperatures (the SHARON process) and, as demonstrated in this paper, also at low dissolved oxygen (DO) concentrations. Enriched AOB was attained at a low DO concentration (0.4 mg l-1) and a dilution rate of 0.42 day -1 in a continuous process. A higher oxygen affinity of AOB compared to NOB seemed critical to achieving this. This was verified by determining the oxygen half saturation constant, K o, with similar oxygen mass transfer resistances for enriched AOB and NOB as 0.033 ± 0.003 mg l -1 and 0.43 ± 0.08 mg l-1, respectively. However, the extent of nitritation attained was found to be highly sensitive to process upsets. © 2007 Springer Science+Business Media B.V.

AB - Partial nitrification to nitrite (nitritation) can be achieved in a continuous process without sludge retention by wash out of nitrite oxidising bacteria (NOB) while retaining ammonia oxidising bacteria (AOB), at elevated temperatures (the SHARON process) and, as demonstrated in this paper, also at low dissolved oxygen (DO) concentrations. Enriched AOB was attained at a low DO concentration (0.4 mg l-1) and a dilution rate of 0.42 day -1 in a continuous process. A higher oxygen affinity of AOB compared to NOB seemed critical to achieving this. This was verified by determining the oxygen half saturation constant, K o, with similar oxygen mass transfer resistances for enriched AOB and NOB as 0.033 ± 0.003 mg l -1 and 0.43 ± 0.08 mg l-1, respectively. However, the extent of nitritation attained was found to be highly sensitive to process upsets. © 2007 Springer Science+Business Media B.V.

KW - Activated sludge

KW - Continuous process

KW - Dissolved oxygen concentration

KW - Nitritation

KW - Nitrite oxidising bacteria

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UR - https://www.scopus.com/pages/publications/39749184064#tab=impact

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DO - 10.1007/s10532-007-9136-4

M3 - RGC 21 - Publication in refereed journal

C2 - 17611802

SN - 0923-9820

VL - 19

SP - 303

EP - 312

JO - Biodegradation

JF - Biodegradation

IS - 2

ER -

Partial nitrification to nitrite using low dissolved oxygen concentration as the main selection factor

Abstract

Bibliographical note

Funding

UN SDGs

Research Keywords

Policy Impact

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