Biological nitrogen removal of high-strength ammonium industrial wastewater with two-sludge system

Carrera, Julián; Baeza, Juán Antonio; Vicent, Teresa; Lafuente, Javier

doi:10.1016/s0043-1354(03)00338-5

Cited by 152 publications

(75 citation statements)

References 25 publications

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“…The surplus NaHCO 3 could be avoided by addition of the solution with a pH titrator. Carrera et al (2003) reported that as biomass ability for oxidizing ammonia changes, some problems related to alkalinity addition appeared. These problems were mainly due to the fact that it was difficult to dissolve sodium bicarbonate in the wastewater completely at the targeted concentrations.…”

Section: Feasibility Of Fixed Bed Reactors For Nitrification Of Salinmentioning

confidence: 99%

Nitrification in fixed-bed reactors treating saline wastewater

Sudarno

Bathe

Winter

et al. 2009

Appl Microbiol Biotechnol

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Section: Feasibility Of Fixed Bed Reactors For Nitrification Of Salinmentioning

confidence: 99%

Nitrification in fixed-bed reactors treating saline wastewater

Sudarno

Bathe

Winter

et al. 2009

Appl Microbiol Biotechnol

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“…Las concentraciones promedios de N-NH 4 a la salida del reactor para cada una de las fases son de 3, 275 y 10 mg/L (99,7 82,0 y 99,3% de remoción estadísticamente diferentes entre si) (figura 7). Las concentraciones de la fase I y III según la literatura (Castens y Rozich, 1986;Carrera et al, 2003) no son lo suficientemente altas como no ejercerían inhibición por sustrato y según la normas de emisión chilenas serían aptas para descargar a alcantarillado (D.S. 609/1998).…”

Section: Resultados Y Discusiónunclassified

“…De acuerdo a los estudios realizados por Buday et al (1999), la inhibición se lleva a cabo por la molécula no ionizada y la nitratación es más sensible a la inhibición que la nitritación. Carrera et al (2003), trabajan con un RIL en un lodo activado y cuando la concentración de amonio llega dentro del reactor a 500 mg/L (7,7 mg N-NH 3 /L) la velocidad de nitrificación se ve disminuida de 0,15 a 0,10 g N-NH 4 /g SSV día.…”

Section: Introductionunclassified

Tratamiento en Lodo Activado del Lixiviado de un Relleno Sanitario

Droppelmann

Oettinger

2009

Inf. tecnol.

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ResumenEn este trabajo se estudia el comportamiento de un lodo activado en cuanto a su capacidad para remover la demanda biológica de oxígeno (DBO) y el nitrógeno amoniacal de un lixiviado previamente tratado en una laguna anaeróbica. El lixiviado pretratado presenta concentraciones de DBO 5 y de N-NH 4 entre 1150 y 3017 mg/l y 1350 y 1750 mg/L respectivamente. La investigación se llevó a cabo en un reactor piloto de 30L, operando a tres factores de carga. Al mayor factor de carga aplicado (0,073 kg DBO 5 /kg SSV día, 0,07 kg N-NH 4 /SSV), operando con un tiempo de residencia hidráulico de 10 días, se logran altas remociones de DBO 5 (98%, 0,24 kg DBO 5 /m 3 ) y de N-NH 4 (99%, 0,15 kg N-NH 4 /m 3 día). En estas condiciones de operación, las concentraciones de DBO 5 (41 mg/L), y de N-NH 4 (10 mg/L) a la salida del lodo activado, cumplirían con holgura la norma chilena de emisión a alcantarillado. Palabras clave: lixiviado, lodo activado, relleno sanitario, amonio, demanda biológica de oxígeno Treatment of Landfill Leachate using Activated Sludge AbstractIn this work the behavior of an activated sludge is studied according to its capacity to remove the biochemical oxygen demand (BOD) and ammonium nitrogen of a leachate previously treated in an anaerobic pond. The BDO 5 and N-NH 4 concentrations in the pretreated leachate ranged from 1150 to 3017 mg/L and between 1350 to 1750 mg/L respectively. The study was carried out in a pilot scale reactor of 30L operating at three load factors. At higher load factor (0.073 kg BOD 5 /kg SSV day, 0.07 kg N-NH 4 /SSV), operating with a hydraulic residence time of 10 days, high BOD 5 (98%, 0.24 kg BOD 5 /m 3 day) and high N-NH 4 removals (99%, 0.15 kg N-NH 4 /m 3 day) were achieved. Under these operating conditions the effluent concentrations of BOD 5 (41 mg/L) and N-NH 4 (10 mg/l) complies with the official Chilean sewage emission standards.

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“…Kaczorek and Ledakowicz (2006) showed that in the two-stage sludge system with secondary denitrification and sodium acetate as a carbon source (with a COD to N ratio above 4), the removal of inorganic nitrogen compounds from landfill leachate was 99%. Carrera et al (2003) showed complete denitrification using two different industrial carbon sources, one containing mainly ethanol and the other methanol (2003). According to their research, the COD to N ratio needed for denitrification using ethanol was 4.3 ± 0.4 g COD/g N and for methanol was 3.9 ± 0.5 g COD/g N. The results from the investigations of Christensson et al (1994) show that the amount of COD required for nitrate removal was lower for ethanol (3.85 g/g N) than for methanol (4.45 g/g N) in the continuous experiments, while it was higher for ethanol (6.1 g/g N) than for methanol (4.1 g/g N) in pure culture batch cultivations.…”

Section: Denitrificationmentioning

confidence: 99%

Nitrogen removal from landfill leachate via the nitrite route

Kulikowska

2012

Braz. J. Chem. Eng.

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-The feasibility of removing nitrogen from mature landfill leachate using the nitrite route was investigated in a two-stage SBR system -(1 o first stage, short-cut nitrification; second stage, denitrification via nitrite. With a volumetric exchange rate (n) of 0.3 d -1 and an oxygen concentration of between 1.2 and 1.3 mg/L, the nitrite accumulation ratio -(NO 2 -N)×100/(NO x -N)% -was between 32% and 37%. For the same hydraulic retention time, but lower oxygen concentration -between 0.8 and 0.9 mg/L -nitrite accumulation averaged 96%, indicating that ammonia was removed completely via the nitrite pathway. In the second step, an external carbon source was added to promote denitrification. Complete removal of nitrite was obtained for a carbon dose of 2.4 mg COD/mg NO 2 -N using acetic acid and 3.8 mg COD/mg NO 2 -N for butyric acid. Also, a higher denitrification rate -14.6 mg NO 2 -N/g VSS·h -was observed with butyric acid as compared with acetic acid -9.12 mg NO 2 -N/g VSS·h.

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Biological nitrogen removal of high-strength ammonium industrial wastewater with two-sludge system

Cited by 152 publications

References 25 publications

Nitrification in fixed-bed reactors treating saline wastewater

Nitrification in fixed-bed reactors treating saline wastewater

Tratamiento en Lodo Activado del Lixiviado de un Relleno Sanitario

Nitrogen removal from landfill leachate via the nitrite route

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