Investigations on Nitrogen Removal in a Two-Stage Subsurface Vertical Flow Constructed Wetland

Langergraber, Günter; Prandtstetten, Christoph; Pressl, Alexander; Sleytr, Kirsten; Leroch, Klaus; Rohrhofer, Roland; Haberl, Raimund

doi:10.1007/978-1-4020-8235-1_18

Cited by 9 publications

(5 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Es frecuente encontrar una baja capacidad de HSSFV para la remoción de N total , ya que normalmente carecen de las condiciones físicas y químicas para que tenga lugar la desnitrificación. Por ejemplo, Langergraber et al (2008) encontraron una remoción promedio de sólo 8 % en HSSFV de 75 cm de altura con grava de 1-4 mm de diámetro. Por otro lado, Masi y Martinuzzi (2007) reportaron una remoción nula general de N total en HSSFV en países mediterráneos.…”

Section: Humedal Híbrido III (Hssfv-hssfh)unclassified

Evaluación De Tres Sistemas De Humedales Híbridos a Escala Piloto Para La Remoción De Nitrógeno

Bojorges

Razo

Urquieta

et al. 2017

Rev. Int. Contam. Ambie.

View full text Add to dashboard Cite

Palabras clave: nitrógeno amoniacal, nitrógeno orgánico, nitrato, humedales verticales, Canna indica, Strelitzia reginae RESUMENEn este estudio se evaluaron y compararon tres sistemas de humedales híbridos para la remoción de nitrógeno total (N total ) durante dos años. Se cuantificó el contenido de cada uno de los componentes nitrogenados: nitrógeno amoniacal (N-NH 4 + ), nitrato (NO 3 -) y nitrógeno orgánico (N Org ). El primer sistema (I) estuvo compuesto de un humedal subsuperficial de flujo horizontal (HSSFH), seguido de una laguna de estabilización (LE) aerobia; el segundo (II) por HSSFH seguido de un humedal subsuperficial de flujo vertical (HSSFV); y el tercero (III), por HSSFV seguido de HSSFH. Los tres sistemas fueron muy efectivos para la nitrificación. Se registraron incrementos elevados en la concentración de NO 3 -en los efluentes y eficiencias altas en la remoción de N-NH 4 + . Estas eficiencias fueron de 76.2 % y 78.7 %, en el sistema I; de 87.4 % y 92.5 % en el sistema II y de 82.6 % y 97.2 % en el sistema III, en el primer y segundo año, respectivamente. Respecto a la remoción de N total , el sistema I (HSSFH-LE) fue el más efectivo (p < 0.05) con remociones de 59.4 % y 57.7 % en los años 1 y 2, respectivamente. En los sistemas II (HSSFH-HSSFV) y III (HSSFV-HSSFH) las remociones fueron de 21.2 % y 34.4 %, y de 25.0 % y 36.3 %, respectivamente. La baja remoción de N total en los sistemas II y III, aparentemente se debió a una baja tasa de desnitrificación ante la ausencia de zonas anóxicas/anaerobias más extensas como resultado de la baja profundidad de los HSSFH y de las características del medio filtrante, tales como su distribución de tamaño de partícula (tezontle molido) y su elevada porosidad.Key words: ammonium, organic nitrogen, nitrate, vertical wetlands, Canna indica, Strelitzia reginae ABSTRACTIn this two-year study, three hybrid constructed wetlands were evaluated and compared for Total-N removal, quantifying the content of each of the nitrogen compounds: Ammonium (NH 4 + ), nitrate (NO 3 -) and organic nitrogen (Org-N). The first system (I) consisted of a subsurface flow horizontal wetland (SSFHW) followed by an aerobic stabilization pond (SP); the second one (II) consisted of a SSFHW followed by a subsurface flow vertical wetland (SSFVW); and the third one (III) was configured with a SSFVW followed by a SSFHW. The three systems were very effective for nitrification, Rev. Int.

show abstract

Section: Humedal Híbrido III (Hssfv-hssfh)unclassified

Evaluación De Tres Sistemas De Humedales Híbridos a Escala Piloto Para La Remoción De Nitrógeno

Bojorges

Razo

Urquieta

et al. 2017

Rev. Int. Contam. Ambie.

View full text Add to dashboard Cite

show abstract

“…(Vymazal, 2007;Tao and Wang, 2008;Albuquerque et al, 2009;Langergraber et al, 2009). However, although nitrogen processing was high in the CWs, it was not complete.…”

Section: [Insert Table 1 Here]mentioning

confidence: 99%

Performance evaluation and prediction for a pilot two-stage on-site constructed wetland system employing dewatered alum sludge as main substrate

Babatunde

Zhao

Doyle

et al. 2011

Bioresource Technology

View full text Add to dashboard Cite

Publication informationBioresource Technology, 102 (10): 5645-5652Publisher Elsevier AbstractDewatered alum sludge, a widely generated by-product of drinking water treatment plants using aluminium salts as coagulants was used as main substrate in a pilot on-site constructed wetland system treating agricultural wastewater for 11 months. Treatment performance was evaluated and spreadsheet analysis was used to establish correlations between water quality variables. Results showed that removal rates (in g/m 2 .d) of 4.6-249.2 for 5 day biochemical oxygen demand (BOD 5 ), 35.6-502.0 for chemical oxygen demand (COD), 2.5-14.3 for total phosphorus (TP) and 2.7-14.6 for phosphate (PO 4 -P) were achieved. Multiple regression analysis showed that effluent BOD 5 and COD can be predicted to a reasonable accuracy (R 2 =0.665 and 0.588, respectively) by using input variables which can be easily monitored in real time as sole predictor variables. This could provide a rapid and cheap alternative to such laborious and time consuming analyses and also serve as management tools for day-to-day process control.

show abstract

“…They reported that the removal of ammonium was high with temperatures above 12°C and low with temperature under 12°C, indicating the dependence of the removal rate on temperature variations. Langergraber et al (2008aLangergraber et al ( , 2008b) investigated a two-stage VFCW system with intermittent loading and they reported similar efficiency to a single-stage system for organic matter and nitrogen removal. As illustrated in Figure 2, the dissolved oxygen presented an inverse variation with temperature, so when water temperature was greater than 17°C the dissolved oxygen concentration decreased affecting the nitrification negatively, as reported in summer and fall.…”

Section: Ammonia Removal and Nitrate Transformationmentioning

confidence: 97%

Performance and Sustainability of Vertical Constructed Wetland to Treat Domestic Wastewater in Rural Areas of Morocco

Taouraout¹,

Chahlaoui²,

Belghyti³

et al. 2020

J. Sustain. Sci. Manage.

View full text Add to dashboard Cite

Constructed wetlands (CWs) have been used as a green technology to treat various wastewaters for several decades. This technology can be used to overcome the challenge of wastewater effluent disposal without treatment in rural areas of Morocco. The aim of this study was to evaluate the performance of this system under three hydraulic loading rates. To do this, a pilot scale of Subsurface-vertical flow constructed wetland system (VFCW) measuring 0.4 m × 0.6 m × 0.78 m (L ×W× H), was designed to treat domestic wastewater from a single household and its performance was investigated. The substrates used in this filter were gravel, iron sawdust and crushed concrete. This system was fed with three hydraulic loading rates: 250 L/m 2 /day, 350 L/m 2 /day and 500 L/m 2 /day, and planted by Chrosopogon zizanioides L. The results showed the high removal rates (between 74-92 %) for all organic matters, good removal rate for orthophosphate (68±9%) due to the iron and crushed concrete added into the filter, and moderate removal rate for ammonium (47±23%). The effluent quality is in accordance with Moroccan standards. Consequently, VFCW as an efficient, economic, ecological and sustainable wastewater treatment technology can be one of the most appropriate solutions to treat domestic wastewater in rural areas of Morocco.

show abstract

Investigations on Nitrogen Removal in a Two-Stage Subsurface Vertical Flow Constructed Wetland

Cited by 9 publications

References 3 publications

Evaluación De Tres Sistemas De Humedales Híbridos a Escala Piloto Para La Remoción De Nitrógeno

Evaluación De Tres Sistemas De Humedales Híbridos a Escala Piloto Para La Remoción De Nitrógeno

Performance evaluation and prediction for a pilot two-stage on-site constructed wetland system employing dewatered alum sludge as main substrate

Performance and Sustainability of Vertical Constructed Wetland to Treat Domestic Wastewater in Rural Areas of Morocco

Contact Info

Product

Resources

About