Estimación del balance de Nitrógeno en un humedal construido subsuperficial plantado con Heliconia psittacorum para el tratamiento de aguas residuales domésticas

  • Harry Gutiérrez-Mosquera Tecnológico de Antioquia
  • Miguel Ricardo Peña-Varón Universidad del Valle
  • Alexander Aponte-Reyes Universidad del Valle

Abstract

La influencia de la vegetación (Heliconia psittacorum) y el principal mecanismo de eliminación de nitrógeno en un humedal construido de flujo subsuperficial (HFSS) fueron estudiados por la aplicación de un balance de N. Para ésto se construyeron seis unidades de HFSS a escala de laboratorio (microcosmos) que incluyeron lechos de grava plantados con Heliconia sp. y sin plantar (controles), sometidos a una carga de 5,68 g N m-2 d-1 y un tiempo nominal de retención de 1,0 día. Los resultados indicaron una mayor eficiencia de eliminación de la carga de N en los microcosmos plantados (29,6%) comparado con los sin plantar (24,3%). El balance de masas indicó que el principal mecanismo de eliminación de N fue la nitrificación/desnitrificación al eliminar el 66,7 y 69,7% del N eliminado en los microcosmos plantados y sin plantar, respectivamente. La acumulación en el medio de soporte eliminó el 21,4 y 22,0% del N, respectivamente. Mientras que una pequeña asimilación del N por la Heliconia sp. fue establecida (0,6%). Pese a la baja asimilación directa de N por parte de la planta, fue evidente que éstas contribuyeron indirectamente a la eliminación de N en los microcosmos plantados vía latranslocación de oxígeno atmosférico y el ensamblaje de una comunidad microbiana más diversa en la rizósfera.
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Published
2013-02-28
How to Cite
Gutiérrez-Mosquera H., Peña-Varón M. R., & Aponte-Reyes A. (2013). Estimación del balance de Nitrógeno en un humedal construido subsuperficial plantado con Heliconia psittacorum para el tratamiento de aguas residuales domésticas. Revista Facultad De Ingeniería Universidad De Antioquia, (56), 87-98. Retrieved from https://revistas.udea.edu.co/index.php/ingenieria/article/view/14656