Partial nitrification of high ammonia concentration wastewater as a part of a shortcut biological nitrogen removal process

Ciudad, Gustavo; Rubilar, Olga; Muñoz, Pablo; Ruiz, G.; Chamy, Rolando; Vergara, Christian; Jeison, David

doi:10.1016/j.procbio.2004.06.058

Cited by 171 publications

(81 citation statements)

References 8 publications

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“…In the report of Ciudad et al (2005), an activated sludge reactor is operated under different DO levels, analyzing nitrite accumulation and ammonia removal. Results show that at 1.4 mg DO/l, 75% of nitrite accumulation takes place, with 95% of ammonia removal.…”

Section: Dissolved Oxygen Concentrationmentioning

confidence: 99%

Biological nitrogen removal with nitrification and denitrification via nitrite pathway

Peng

Zhu

2006

Appl Microbiol Biotechnol

525

230

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Presently, the wastewater treatment practices can be significantly improved through the introduction of new microbial treatment technologies. To meet increasingly stringent discharge standards, new applications and control strategies for the sustainable removal of ammonium from wastewater have to be implemented. Partial nitrification to nitrite was reported to be technically feasible and economically favorable, especially when wastewater with high ammonium concentrations or low C/N ratios is treated. For successful implementation of the technology, the critical point is how to maintain partial nitrification of ammonium to nitrite. Partial nitrification can be obtained by selectively inhibiting nitrite oxidizing bacteria through appropriate regulation of the system's DO concentration, microbial SRT, pH, temperature, substrate concentration and load, operational and aeration pattern, and inhibitor. The review addressed the microbiology, its consequences for their application, the current status regarding application, and the future developments.

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Section: Dissolved Oxygen Concentrationmentioning

confidence: 99%

Biological nitrogen removal with nitrification and denitrification via nitrite pathway

Peng

Zhu

2006

Appl Microbiol Biotechnol

525

230

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“…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%

“…However, the effect of DO concentration on nitrite accumulation did not attract much attention until the recent emergence of partial nitrification processes. Currently, a number of publications have discussed partial nitrification under various DO concentrations (Ciudad et al, 2005;Ruiz et al, 2006;Bae et al, 2002;Wang and Yang, 2004). The maintenance of DO concentration includes operation and installation cost of air supply equipments and the aeration time influences the capital cost of reactor size and operational cost to a large extent.…”

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.

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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.

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“…The K s (half saturation constant) value of AOB (0.3 mg/L) is lower than that of NOB (1.1 mg/L), which means that AOB will outcompete under DO limitation condition (Wang and Yang, 2004). Some researchers have taken DO concentration around 1.0 mg/L as suitable concentration for nitritation (Ciudad et al, 2005;Ruiz et al, 2006). This value can be quite a specific case due to variation of the oxygen mass transfer efficiency in reactors (Ciudad et al, 2005).…”

Section: Sludge Residence Time (Srt)mentioning

confidence: 99%

“…Some researchers have taken DO concentration around 1.0 mg/L as suitable concentration for nitritation (Ciudad et al, 2005;Ruiz et al, 2006). This value can be quite a specific case due to variation of the oxygen mass transfer efficiency in reactors (Ciudad et al, 2005).…”

Section: Sludge Residence Time (Srt)mentioning

confidence: 99%

Anaerobic ammonium oxidation for treatment of ammonium-rich wastewaters

Zhang

Zheng

Tang

et al. 2008

J. Zhejiang Univ. Sci. B

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Abstract:The concept of anaerobic ammonium oxidation (ANAMMOX) is presently of great interest. The functional bacteria belonging to the Planctomycete phylum and their metabolism are investigated by microbiologists. Meanwhile, the ANAMMOX is equally valuable in treatment of ammonium-rich wastewaters. Related processes including partial nitritation-ANAMMOX and completely autotrophic nitrogen removal over nitrite (CANON) have been developed, and lab-scale experiments proved that both processes were quite feasible in engineering with appropriate control. Successful full-scale practice in the Netherlands will accelerate application of the process in future. This review introduces the microbiology and more focuses on application of the ANAMMOX process.

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Partial nitrification of high ammonia concentration wastewater as a part of a shortcut biological nitrogen removal process

Cited by 171 publications

References 8 publications

Biological nitrogen removal with nitrification and denitrification via nitrite pathway

Biological nitrogen removal with nitrification and denitrification via nitrite pathway

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

Anaerobic ammonium oxidation for treatment of ammonium-rich wastewaters

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