GagnonMaltais-LandryPuigagutEtAl2010

Référence

Gagnon, V., Maltais-Landry, G., Puigagut, J., Chazarenc, F. and Brisson, J. (2010) Treatment of hydroponics wastewater using constructed wetlands in winter conditions. Water, Air, and Soil Pollution, 212(1-4):483-490. (Scopus )

Résumé

Hydroponics culture generates large amounts of wastewater that are highly concentrated in nitrate and phosphorus but contains almost no organic carbon. Constructed wetlands (CWs) have been proposed to treat this type of effluent, but little is known about the performance of these systems in treating hydroponic wastewater. In addition, obtaining satisfactory winter performances from CWs operated in cold climates remains a challenge, as biological pathways are often slowed down or inhibited. The main objective of this study was to assess the effect of plant species (Typha sp., Phragmites australis, and Phalaris arundinacea) and the addition of organic carbon on nutrient removal in winter. The experimental setup consisted of 16 subsurface flow CW mesocosms (1 m<sup>2</sup>, HRT of 3 days) fed with 30 Ld<sup>1</sup> of synthetic hydroponics wastewater, with half of the mesocosms fed with an additional source of organic carbon (sucrose). Carbon addition had a significant impact on nitrate and phosphate removal, with removal means of 4.9 g m<sup>-2</sup>d <sup>-1</sup> of NO<sub>3</sub>-N and 0.5 g m<sup>-2</sup> d<sup>-1</sup> of PO<sub>4</sub>-P. Planted mesocosms were generally more efficient than unplanted controls. Furthermore, we found significant differences among plant treatments for NO<sub>3</sub>-N (highest removal with P. arundinacea) and COD (highest removal with P. australis/Typha sp.). Overall, planted wetlands with added organic carbon represent the best combination to treat hydroponics wastewater during the winter. © 2010 Springer Science+Business Media B.V.

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@ARTICLE { GagnonMaltais-LandryPuigagutEtAl2010,
    AUTHOR = { Gagnon, V. and Maltais-Landry, G. and Puigagut, J. and Chazarenc, F. and Brisson, J. },
    TITLE = { Treatment of hydroponics wastewater using constructed wetlands in winter conditions },
    JOURNAL = { Water, Air, and Soil Pollution },
    YEAR = { 2010 },
    VOLUME = { 212 },
    PAGES = { 483-490 },
    NUMBER = { 1-4 },
    ABSTRACT = { Hydroponics culture generates large amounts of wastewater that are highly concentrated in nitrate and phosphorus but contains almost no organic carbon. Constructed wetlands (CWs) have been proposed to treat this type of effluent, but little is known about the performance of these systems in treating hydroponic wastewater. In addition, obtaining satisfactory winter performances from CWs operated in cold climates remains a challenge, as biological pathways are often slowed down or inhibited. The main objective of this study was to assess the effect of plant species (Typha sp., Phragmites australis, and Phalaris arundinacea) and the addition of organic carbon on nutrient removal in winter. The experimental setup consisted of 16 subsurface flow CW mesocosms (1 m<sup>2</sup>, HRT of 3 days) fed with 30 Ld<sup>1</sup> of synthetic hydroponics wastewater, with half of the mesocosms fed with an additional source of organic carbon (sucrose). Carbon addition had a significant impact on nitrate and phosphate removal, with removal means of 4.9 g m<sup>-2</sup>d <sup>-1</sup> of NO<sub>3</sub>-N and 0.5 g m<sup>-2</sup> d<sup>-1</sup> of PO<sub>4</sub>-P. Planted mesocosms were generally more efficient than unplanted controls. Furthermore, we found significant differences among plant treatments for NO<sub>3</sub>-N (highest removal with P. arundinacea) and COD (highest removal with P. australis/Typha sp.). Overall, planted wetlands with added organic carbon represent the best combination to treat hydroponics wastewater during the winter. © 2010 Springer Science+Business Media B.V. },
    COMMENT = { Export Date: 18 October 2010 Source: Scopus CODEN: WAPLA doi: 10.1007/s11270-010-0362-8 },
    ISSN = { 00496979 (ISSN) },
    KEYWORDS = { Constructed wetlands, Hydroponics wastewater, Macrophyte species, Nitrate removal, Organic carbon addition },
    OWNER = { Luc },
    TIMESTAMP = { 2010.10.18 },
    URL = { http://www.scopus.com/inward/record.url?eid=2-s2.0-77957592480&partnerID=40&md5=f45f7c811fd4a7ace7b4df884e8fd55f },
}

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