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Determinación del potencial depurador del cultivo hidropónico de Phalaris spp y Pennisetum clandestinum Hochst, mediante la técnica de la película nutriente
El presente estudio corresponde a la segunda etapa de la evaluación de un sistema de tratamiento de aguas residuales domésticas conocido como la Técnica de la Película Nutriente (TPN), utilizando dos especies de gramíneas: Pennisetum clandestinum Hochst (pasto kikuyo) y Phalaris spp (pasto brasilero). Los resultados permitieron establecer que las raíces actúan como un filtro biológico de los sólidos y materia orgánica, y además absorben los nutrientes contenidos en este tipo de aguas residuales. Por otra parte, el establecimiento de una cadena trófica o “cadena depuradora" de organismos (plancton y fauna asociada) contribuye en gran medida en la remoción de polutantes. Bajo las condiciones de operación, el sistema de tratamiento (TPN) removió eficientemente bacterias coliformes de origen fecal, seguido por solidos suspendidos, materia orgánica y en menor grado los nutrientes.
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Copyright (c) 1990 Luis Eduardo Cruz Torres, Flor Mariela Cuervo, Doris Yolanda Sanabria
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