Journal ArticleDOI
N2O Production during Nitrogen Removal via Nitrite from Domestic Wastewater: Main Sources and Control Method
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TLDR
N(2)O production during nitrogen removal via nitrite decreased about 50% by applying the step-feed SBR, due to the effective control of nitrite and ammonia, the precursors of N(2]O production.Abstract:
Nitrite has been commonly recognized as an important factor causing N2O production, which weakened the advantages of nitrogen removal via nitrite. To reduce and control N2O production from wastewater treatment plants, both long-term and batch tests were carried out to investigate main sources and pathways of N2O production during nitrogen removal via nitrite from real domestic wastewater. The obtained results showed that N2O production during nitrogen removal via nitrite was 1.5 times as much as that during nitrogen removal via nitrate. It was further demonstrated that ammonia oxidization were main source of N2O production during nitrogen removal from domestic wastewater; whereas, almost no N2O was produced during nitrite oxidization and anoxic denitrification. N2O production during nitrogen removal via nitrite decreased about 50% by applying the step-feed SBR, due to the effective control of nitrite and ammonia, the precursors of N2O production. Therefore, the step-feed system is recommended as an effect...read more
Citations
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Journal ArticleDOI
Microbial ecology of denitrification in biological wastewater treatment.
TL;DR: This review stresses the need to integrate microbial ecology information into conventional denitrification design and operation at full-scale, and a combination of high-throughput approaches is next in line for thorough assessment of wastewater denitrifying community structure and function.
Journal ArticleDOI
Nitrous oxide emissions from wastewater treatment processes
TL;DR: With increased understanding of the fundamental reactions responsible for N 2O production in wastewater treatment systems and the conditions that stimulate their occurrence, reduction of N2O emissions from wastewater treatment plants through improved plant design and operation will be achieved in the near future.
Journal ArticleDOI
A review on nitrous oxide (N2O) emissions during biological nutrient removal from municipal wastewater and sludge reject water.
Theoni Maria Massara,Simos Malamis,Albert Guisasola,Juan A. Baeza,Constantinos Noutsopoulos,Evina Katsou +5 more
TL;DR: A critical review of the existing literature on N2O emissions during BNR is presented focusing on the most contributing parameters, with an undeniable validation of the robustness of such models calls for reliable quantification techniques which simultaneously describe dissolved and gaseous N 2O dynamics.
Journal ArticleDOI
Side-stream sludge treatment using free nitrous acid selectively eliminates nitrite oxidizing bacteria and achieves the nitrite pathway.
TL;DR: The FNA-based strategy for establishing the nitrite pathway substantially improved total nitrogen removal, and did not increase N2O emission or deteriorate sludge settleability.
Journal ArticleDOI
Modeling Nitrous Oxide Production during Biological Nitrogen Removal via Nitrification and Denitrification: Extensions to the General ASM Models
TL;DR: A mathematical model is developed that adequately captures N(2)O dynamics in autotrophic nitrification and heterotrophic denitrification driven biological N removal processes and which can form the basis for ongoing refinements.
References
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Journal ArticleDOI
Role of nitrifier denitrification in the production of nitrous oxide
TL;DR: In this article, the authors present knowledge about Nitrifier denitrification is summarized in order to give an exact definition, to spread awareness of its pathway and controlling factors and to identify areas of research needed to improve global N 2 O budgets.
Journal ArticleDOI
The anaerobic oxidation of ammonium
Mike S. M. Jetten,Marc Strous,Katinka T. van de Pas-Schoonen,Jos Schalk,Udo van Dongen,Astrid A. van de Graaf,Susanne Logemann,Gerard Muyzer,Mark C.M. van Loosdrecht,J. Gijs Kuenen +9 more
TL;DR: The number of reports on unaccounted high nitrogen losses in wastewater treatment is gradually increasing, indicating that anaerobic ammonium oxidation may be more widespread than previously assumed.
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15N Kinetic Analysis of N2O Production by Nitrosomonas europaea: an Examination of Nitrifier Denitrification
Mark A. Poth,Dennis D. Focht +1 more
TL;DR: It is concluded that N. europaea is a denitrifier which, under conditions of oxygen stress, uses nitrite as a terminal electron acceptor and produces nitrous oxide.
Journal ArticleDOI
Dynamics of nitric oxide and nitrous oxide emission during full-scale reject water treatment
Marlies J. Kampschreur,Wouter R. L. van der Star,Hubert A. Wielders,Jan Willem Mulder,Mike S. M. Jetten,Mike S. M. Jetten,Mark C.M. van Loosdrecht +6 more
TL;DR: It seems that a low dissolved oxygen or a high nitrite concentration are the most likely cause of elevated NO and N2O emission by ammonia-oxidizing bacteria.
Journal ArticleDOI
Simultaneous nitrification, denitrification, and phosphorus removal in a lab-scale sequencing batch reactor.
TL;DR: Experimental results demonstrated that nitrogen removal was via nitrite, not nitrate, and showed that denitrifying glycogen‐accumulating organisms (DGAOs), rather than den itrifying polyphosphate‐ Accumulating organism (DPAOs), were responsible for the denitrification activity.