Partial nitrification in a SHARON reactor in the presence of salts and organic carbon compounds

Mosquera-Corral, Anuska; González, Francisco Sánchez-Montes; Campos, José Luis; Méndez, R.

doi:10.1016/j.procbio.2005.03.042

Cited by 219 publications

(83 citation statements)

References 15 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In spite of the promotion of heterotrophic growth, the impact of total organic carbon (TOC) concentration on a partial nitritation system has been found to depend on carbon concentration. It has been reported that TOC concentrations are 0.2 g TOC L , as acetate decreases 10% ammonium conversion in these systems [6]. Another impact of organic matter on partial nitritation reactors is related to the carbonate-bicarbonate-carbon dioxide equilibrium.…”

Section: Effect Of Influent Characteristicsmentioning

confidence: 95%

“…More restrictive standards for nitrogen in wastewater effluent are being imposed by new regulations, such as the European Union (EU) Water Frame Directive 91/271/EEC (Table 1). To achieve these standards in a cost-effective way, autotrophic nitrogen removal technologies, such as partial nitritation/anaerobic ammonium oxidation (anammox), DEMON (deammonification), OLAND (oxygen limited autotrophic nitrification/denitrification), and CANON (completely autotrophic nitrogen-removal over nitrate) [5,6], have been developed. Autotrophic nitrogen removal technologies are based on anammox bacteria, which can eliminate nitrogen by utilizing ammonium as a substrate and nitrite as the terminal electron acceptor in molar ratios of 1:1 [7].…”

Section: Partial Nitritation Process: An Overviewmentioning

confidence: 99%

See 1 more Smart Citation

The Effect of Influent Characteristics and Operational Conditions over the Performance and Microbial Community Structure of Partial Nitritation Reactors

Rodríguez-Sánchez

González‐Martínez

Martı́nez-Toledo

et al. 2014

Water

View full text Add to dashboard Cite

Nitrogen is a main contaminant of wastewater worldwide. Novel processes for nitrogen removal have been developed over the last several decades. One of these is the partial nitritation process. This process includes the oxidation of ammonium to nitrite without the generation of nitrate. The partial nitritation process has several advantages over traditional nitrification-denitrification processes for nitrogen removal from wastewaters. In addition, partial nitritation is required for anammox elimination of nitrogen from wastewater. Partial nitritation is affected by operational conditions and substances present in the influent, such as quinolone antibiotics. In this review, the impact that several operational conditions, such as temperature, pH, dissolved oxygen concentration, hydraulic retention time and solids retention time, have over the partial nitritation process is covered. The effect of quinolone antibiotics and other emerging contaminants are discussed. Finally, future perspectives for the partial nitritation process are commented upon.

show abstract

Section: Effect Of Influent Characteristicsmentioning

confidence: 95%

Section: Partial Nitritation Process: An Overviewmentioning

confidence: 99%

The Effect of Influent Characteristics and Operational Conditions over the Performance and Microbial Community Structure of Partial Nitritation Reactors

Rodríguez-Sánchez

González‐Martínez

Martı́nez-Toledo

et al. 2014

Water

View full text Add to dashboard Cite

show abstract

“…25 %) and about 40 % lower electron donors; second, denitrification rates with nitrite are usually 1.5-2 times faster than with nitrate (Abeling et al, 1992). Different approaches were used in order to restrict the nitrification process to nitrite (Mosquera-Corral et al, 2005;Bougard et al, 2006). Apparently, the control of a limited DO concentration gives a more practical way relative to the optimization of pH and substrate loading rate to achieve partial nitrification (Ruiz et al, 2006;Chuang et al, 2007).…”

Section: Effect Of Aeration Time On Nitrification and Nitrite Accumulmentioning

confidence: 99%

“…Recently, new processes such as SHARON and ANAMMOX have been developed to treat wastewater with high nitrogen content and low quantity of biodegradable organic materials (Hellinga et al, 1997;Mulder et al, 1995;Dijkman and Strous, 1999). Aiming at lowering the oxygen demand and reducing or avoiding organic substrate requirement, the newly developed processes are essentially based on partial nitrification of ammonium to nitrite (Galí et al, 2006;Fux et al, 2002;Mosquera-Corral, et al, 2005;Ciudad et al, 2005). To achieve the shortcut of nitrate formation, the potential strategies for the stable nitrite accumulation include the control of operating variables such as pH, hydraulic retention time (HRT), solid retention time (SRT), dissolved oxygen (DO) concentration, temperature (Ruiz et al, 2003;Kim et al, 2006;Tseng et al,1998;Bougard et al, 2006), and the screening of different reactor configurations such as SHARON reactor and sequencing batch reactor (SBR) (Fux et al, 2006;Galí et al, 2006;Antileo et al, 2006;Chuang et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

Influence of dissolved oxygen concentration and aeration time on nitrite accumulation in partial nitrification process

Guo

Kim²,

Behera

et al. 2008

Int. J. Environ. Sci. Technol.

View full text Add to dashboard Cite

This study investigated the influence of dissolved oxygen concentration and aeration time on nitrification and nitrite accumulation in an attempt to optimize the recently developed biological-partial-nitritation process for the treatment of strong nitrogen wastewaters. Investigation of dissolved oxygen concentration on ammonium and nitrite oxidation was carried out in a batch reactor. The dissolved oxygen concentration of 0.5 mg O 2 /L inhibited both ammonium as well as nitrite oxidation, while increase of dissolved oxygen concentration to ~1 mg O 2 /L increased the ammonium oxidation rate and was comparable to that at higher dissolved oxygen concentrations. Experiments were carried out in a sequencing batch reactor for more than 100 days to investigate the influence of aeration time on nitrite accumulation. The dissolved oxygen concentration was controlled at ~1.0 mg O 2 /L (in the range of 0.8-1.5 mg/L) during the aeration stage, and volatile suspended solid was maintained at 2.0 g/L while temperature and pH were 30±1ºC and 8.3±0.1, respectively. In a typical cycle, complete nitrification occurred at aeration time longer than 6 h. When the aeration time was reduced to 4 h., ~80 % of partial nitritation was achieved. With a further reduction in aeration time to 3 h., nearly 1:1 nitrite/ammonium ratio was yielded. This result revealed that for the reactor design, aeration time determined by feasibility experiments must be considered based on the nitrogen strength in wastewater and biomass concentration in the reactor with dissolved oxygen concentration of ~1.0 mg O 2 /L for satisfactory partial nitrification with subsequent processes such as anaerobic ammonium oxidation.

show abstract

“…Para verificar la inhibición de la actividad de las bacterias AOB por altas concentraciones de TAN se realizaron otra serie de experimentos, con el objetivo de comprobar si este descenso de la actividad a altas concentraciones es debido al NH 4 o a la elevada salinidad como sugieren algunos autores (Hunik et al, 1992;Mosquera-Corral et al, 2005). Estos experimentos se realizaron empleando la misma metodología que los ensayos previos con NH 4 Cl, pero modificando la sal empleada (se usaron tanto otras sales de amonio como sales sin ion amonio).…”

Section: Concentración De Tan (N-nhunclassified

Modelación matemática del proceso de nitrificación en dos etapas. Desarrollo de metodologías de calibración del modelo para un reactor SHARON y un proceso de fangos activados

Douglas¹

View full text Add to dashboard Cite

Cuatro años dedicados a la realización de la tesis doctoral conllevan la interacción con muchas personas. Estas primeras líneas las quiero dedicar para dar mi más sincero agradecimiento a todos aquellos que con su apoyo han hecho posible la presentación de esta memoria.En primer lugar quiero dar las gracias a José Ferrer Polo y Aurora Seco Torrecillas por darme la posibilidad de formar parte de su grupo de investigación y desarrollar mi tesis doctoral con ellos. Sin esta oportunidad hoy no estaría presentando esta memoria.Estoy profundamente agradecida a mis directores, el doctor Joaquín Serralta Sevilla y el doctor José Ferrer Polo, por la dirección, consejos e inestimable ayuda que han hecho posible la realización del presente trabajo. Deseo agradecerles también el apoyo y comprensión demostrada.A todos los compañeros del grupo de investigación que de una forma u otra han aportado su granito de arena en estos cuatro años de trabajo:A Javier Claros, mi partnet. Porque su trabajo me aportó la información necesaria para conformar los pilares de esta tesis. Junto con él y Luisa empecé mi andadura en el camino del doctorado y hemos seguido trabajando juntos durante mucho tiempo, por todo ello siempre les guardaré un especial cariño.A Vicky, Juan, Marcela y Laura Carretero por esas horas (y días) en la planta piloto y en el laboratorio compartiendo penas y alegrías. Gracias por hacer mucho más agradables las tareas más duras de este trabajo.A Freddy, Javier Eduardo y Ángel, mis compañeros de despacho. Vuestra compañía en estos años ha hecho mi vida como investigador mucho más fácil y el trabajo mucho más ameno.A Ángela, por su aportación artística y ese derroche de felicidad que anima a cualquiera.A Josep, Alberto, Paqui, Dani y Ramón porque siempre han sido un ejemplo a seguir. Gracias por los muchos comentarios y consejos aportados en estos años.A Luis, Nuria y Laura Pastor, vuestro buen humor y forma de ver la vida es siempre un regalo. Así que, simplemente, gracias por ser como sois.A Jose, Rafa, Brenda, Berta, Sara, Quique, Tatiana y Laura Segovia, porque con vosotros los momentos compartidos han sido pocos pero muy buenos.Por último, deseo expresar mi amor y agradecimiento a toda mi familia y amigos. En particular me gustaría agradecer a mis padres y hermanos porque a ellos les debo gran parte de lo que soy. Siempre encontré en sus palabras aquello que necesitaba oír en cada momento. Hemos compartido muchísimas cosas y con vuestras experiencias yo también he aprendido muchas lecciones que me han ayudado en mí día a día. Al futuro bebé de la familia porque con la noticia de tu llegada has alegrado la etapa final de esta tesis que siempre es la más difícil.También quiero dar las gracias a mi familia política, a mis suegros, cuñados y sobrinos, porque para mí siempre han sido como mis padres y mis hermanos, y me han tratado como una hija más desde el principio.A mis amigos de la infancia, Laura, Inma, Natalia,… y a todos aquellos que han ido llegando a lo largo de mi vida, en el instituto, la universidad, los via...

show abstract

Partial nitrification in a SHARON reactor in the presence of salts and organic carbon compounds

Cited by 219 publications

References 15 publications

The Effect of Influent Characteristics and Operational Conditions over the Performance and Microbial Community Structure of Partial Nitritation Reactors

The Effect of Influent Characteristics and Operational Conditions over the Performance and Microbial Community Structure of Partial Nitritation Reactors

Influence of dissolved oxygen concentration and aeration time on nitrite accumulation in partial nitrification process

Modelación matemática del proceso de nitrificación en dos etapas. Desarrollo de metodologías de calibración del modelo para un reactor SHARON y un proceso de fangos activados

Contact Info

Product

Resources

About