Factors affecting the biological nitrogen removal from wastewater

Komorowska-Kaufman, Małgorzata; Majcherek, Hanna; Klaczyński, E.

doi:10.1016/j.procbio.2005.11.001

Cited by 51 publications

(18 citation statements)

References 6 publications

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“…Hence, biological denitrification is an alternative means to remove the nitrate. In this process, nitrate is reduced to gaseous nitrogen prior to release in the atmosphere [10][11][12]. In biological denitrification, organic carbon serves as electron donor for heterotrophic bacteria whereas inorganic compounds are consumed by autotrophic bacteria.…”

Section: Introductionmentioning

confidence: 99%

Hydrogenotrophic denitrification of synthetic aquaculture wastewater using membrane bioreactor

Visvanathan

Hưng

Jegatheesan

2008

Process Biochemistry

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Section: Introductionmentioning

confidence: 99%

Hydrogenotrophic denitrification of synthetic aquaculture wastewater using membrane bioreactor

Visvanathan

Hưng

Jegatheesan

2008

Process Biochemistry

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“…In contrast, positive coefficients for MLSS and temperature parameters indicate that any increase in these variables will positively affect the nitrification performance. It was observed that a stable nitrification performance was achieved at laboratory scale and full‐scale WWTP over the temperature range 15–21 °C, which might be due to the high activity of nitrifying bacteria 35, 36…”

Section: Resultsmentioning

confidence: 99%

Development of a correlation to study parameters affecting nitrification in a domestic wastewater treatment plant

Coşkuner¹,

Jassim²

2007

J of Chemical Tech & Biotech

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BACKGROUND: Nitrification performance of an activated sludge reactor treating weak domestic wastewater was investigated for 11 months. Ammonia nitrogen removals were investigated as a function of wastewater composition and operational conditions. Backward elimination experimental design was used to determine the influence of the most important independent variables on NH 3 -N removal efficiencies. Influent ammonia and biological oxygen demand (BOD 5 ) concentrations, hydraulic retention time (HRT), mixed liquid suspended solids (MLSS), temperature, pH and dissolved oxygen (DO) concentration were considered as independent variables. This study aimed to find the most important parameters to describe nitrification performance.

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“…The theoretical optimum COD/N ratio needed is close to four, but is very dependent on the COD and N considered and on the conditions of the studied Downloaded by [University of North Texas] at 16:37 27 November 2014 system [23]. Addition of high COD load substances is a common procedure in real facilities like the MBR at the Muertendall landfill.…”

Section: Carbon Source Additionmentioning

confidence: 97%

Simulation of a membrane bioreactor pilot treating old landfill leachates with activated sludge model No. 1 and No. 3

Galleguillos

Keffala

Vasel

2011

Environmental Technology

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Activated sludge model No. 1 (ASM1) and activated sludge model No. 3 (ASM3) can simulate correctly the behaviour of a pilot membrane bioreactor treating old landfill leachates. Both models show similar results, which are consistent with measured data. In this work, a simplified calibration procedure is applied including hydrodynamic and oxygen transfer characterization. The wastewater characterisation was based on a physical-chemical method combined with a BOD analysis for the COD fractions and on standard analysis for nitrogen forms. Default parameters were used for both models; despite this, good simulations were obtained showing the flexibility and accuracy of the well-achieved ASM family models. The sensibility analysis performed allows identification of the most important kinetic, stoichiometric and operational parameters that should be measured to confirm or replace default values. In this specific case, the simulation is most sensitive to heterotrophic yield, particularly under anoxic conditions.

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Factors affecting the biological nitrogen removal from wastewater

Cited by 51 publications

References 6 publications

Hydrogenotrophic denitrification of synthetic aquaculture wastewater using membrane bioreactor

Hydrogenotrophic denitrification of synthetic aquaculture wastewater using membrane bioreactor

Development of a correlation to study parameters affecting nitrification in a domestic wastewater treatment plant

Simulation of a membrane bioreactor pilot treating old landfill leachates with activated sludge model No. 1 and No. 3

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