Mainstream short-cut N removal modelling: current status and perspectives

Kirim, Gamze; McCullough, Kester; Bressani-Ribeiro, Thiago; Domingo-Félez, Carlos; Duan, Haoran; Al‐Omari, Ahmed; Clippeleir, Haydée De; Jiménez, José; Klaus, Stephanie; Ladipo‐Obasa, Mojolaoluwa; Mehrani, Mohamad-Javad; Regmi, Pusker; Torfs, Elena; Volcke, Eveline; Vanrolleghem, Peter

doi:10.2166/wst.2022.131

Cited by 8 publications

(11 citation statements)

References 188 publications

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“…Hence, Nitrospira may be the vital nitrifier for PN transition. The dynamics of NOB repression during PN transition have been captured in mathematical models [35]. However, the mathematical model can only explain the NOB repression dynamic in the corresponding system and not the dynamic in other systems.…”

Section: Microbial Basis Of Partial Nitrificationmentioning

confidence: 99%

Harnessing the Potential of Sludge Fermentation Liquid to Induce Partial Nitrification

Wang,

Jiang,

Wang

et al. 2024

Fermentation

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Extra energy consumption, inefficient nitrogen removal, and excessive sludge production are major challenges faced by wastewater treatment plants (WWTPs) that rely on the traditional activated sludge process. Fermentation of wasted activated sludge (WAS) and novel nitrogen removal technologies based on partial nitrification (PN) have emerged as promising solutions to these issues. Recent studies have revealed an innovative strategy that integrates these two processes by supplementing fermentation liquid into activated sludge to induce PN. This review summarizes the research progress on PN establishment induced by the fermentation process. The microbiology and establishment methods of PN are briefly introduced, followed by a detailed discussion on the process, influencing factors, and product characteristics of WAS fermentation. The core section focuses on the side-stream and main-stream approaches of fermentation-induced PN, comparing their performance and application prospects. The potential mechanisms are explored, with an emphasis on the roles of free ammonia for the side-stream approach and the high tolerance of ammonium oxidizers to in-site fermentation stress for the main-stream approach. Finally, the limitations of the current research and future perspectives are discussed, highlighting the need for further investigation into microbial ecology, process optimization, and long-term stability. This review aims to provide insights into the synergistic integration of WAS fermentation and PN for sustainable and energy-efficient wastewater treatment.

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Section: Microbial Basis Of Partial Nitrificationmentioning

confidence: 99%

Harnessing the Potential of Sludge Fermentation Liquid to Induce Partial Nitrification

Wang,

Jiang,

Wang

et al. 2024

Fermentation

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“…Schematic of half of the vertical cross-section of the vessel and the z-axis used for the model [77]. The dash-dotted line represents the axis of rotation for the conical part at the bottom.…”

Section: 1mentioning

confidence: 99%

“…Sludge blanket position (z SB ) and sludge blanket level (SBL) data obtained from batch settling tests with various initial concentrations X init [77]. .…”

Section: 2mentioning

confidence: 99%

“…Non-reactive models that address the vessel geometry as a function of varying cross-sectional area include those of [11,28,44]. The relevance of studying the reactions occurring in SSTs has been raised by numerous authors [3,50,53,55,57,59,63,74,77,83,88,95].…”

Section: Related Workmentioning

confidence: 99%

“…Motivated by the results of [77,78] and their experimental data, which are also gratefully used in this thesis. Kirim [77] expands the so-called Bürger-Diehl model [20,24] to include the activated sludge model no.…”

Section: Related Workmentioning

confidence: 99%

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Models of reactive settling for wastewater treatment.

Bürger

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La transferencia de embriones permite la diseminación de características genéticas desde animales de alto rendimiento hacia los rebaños bovinos de producción, tanto lecheros como de carne. Para su uso se implementan protocolos de superovulación, que actualmente, utilizan diversas glicoproteínas que no son especie específicas, siendo la hormona folículo estimulante (FSH) extraída de pituitaria de cerdo, la más utilizada actualmente. Sin embargo, esta FSH porcina tiene varias limitantes. Entre ellas, una vida media en circulación de 5 h, contaminación de hormona luteinizante y otras proteínas del extracto, se realizan 8 frecuencias de aplicación en 4 días, lo que precisa un mayor manejo animal y genera estrés, incidiendo significativamente en la respuesta ovárica y la obtención de embriones transferibles. En este trabajo se diseñó y caracterizó una variante recombinante de cadena única, derivada de la hormona folículo estimulante bovina (bscFSH). Esta variante se diseñó considerando las secuencias aminoacídicas de las cadenas alfa y beta de la FSH nativa de Bos taurus, covalentemente unidas mediante un espaciador de 33 aminoácidos y conteniendo un total de 6 sitios potenciales de N-glicosilación, con estructuras altamente sialiladas. La hormona se produjo en un clon de células CHO genéticamente transformadas y se purificó en un único paso de cromatografía de afinidad, obteniéndose con un 97% de pureza. La bscFSH presentó un tiempo medio de residencia de 66,44 h y un tiempo de vida media en circulación de 44,16 h, administrada por vía intramuscular. Esto nos permitió desarrollar protocolos de superovulación en bovinos con la mitad de la frecuencia de aplicaciones (4 administraciones) utilizada actualmente con las FSH derivadas de pituitaria de cerdo, y obteniendo una mayor cantidad de embriones transferibles. La nueva hormona desarrollada induce una respuesta ovárica eficiente, permite un manejo más amigable, tiene un alto nivel de pureza y está libre de contaminantes animales, evitando posibles zoonosis, y disminuyendo la respuesta inmune y estrés animal.

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Start-up and optimization of a one-stage partial nitrification-anammox (PN-A) process treating low ammonium concentration wastewater: experimental results and modeling investigation

Zhang

et al. 2022

Environ Sci Pollut Res

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Mainstream short-cut N removal modelling: current status and perspectives

Cited by 8 publications

References 188 publications

Harnessing the Potential of Sludge Fermentation Liquid to Induce Partial Nitrification

Harnessing the Potential of Sludge Fermentation Liquid to Induce Partial Nitrification

Models of reactive settling for wastewater treatment.

Start-up and optimization of a one-stage partial nitrification-anammox (PN-A) process treating low ammonium concentration wastewater: experimental results and modeling investigation

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