Tratamiento de lixiviados utilizando humedales construidos y determinación de conductividades hidráulicas en clima tropical

In recent years, constructed wetlands have been widely used for the purification of wastewater, representing an alternative method that offers multiple advantages when compared to other treatment systems. The present study assessed the efficiency of six horizontal subsurface flow constructed wetlands (HSSFCW) at pilot scale for the removal of organic matter (COD), nutrients (N-NO3-, P-PO43-) and lead (Pb2+). The study also looked at the operating time on hydraulic conductivity (Ks) to treat leachate from the “El Ojito” Sanitary Landfill in the municipality of Popayán, Cauca. Three wetlands were planted with Heliconia psittacorum (HSSFCW-H. p), and three with Cyperus haspan (HSSFCW-C. h). The support medium used was gravel. They were operated at a flow of 0.012m3/day, and a hydraulic retention time of 4 days. The units received effluent from the oxidation pond. The results showed mean removals of COD (51.67 and 64.00%), N-NO3- (45.33 and 48.17%), P-PO43- (53.67 and 62.67%) and Pb+2 (5.74 and 14.75%) for HSSFCW-H. p and HSSFCW-C. h respectively. Hydraulic conductivity values were between 700 and 1000m/day. The wetland system proved to be efficient for the secondary treatment of leachate from mature landfills, obtaining removal efficiencies significantly higher in HSSFCW-C. h.

• Autores: Jimenez Cerón, Yina F.; Delgado Calvache, Laura I.; Fernández Tulande, Carolina; Pino Alegría, Huber M.; Casas Zapata, Juan C.; Madera Parra, Carlos A.; Lara Borrero, Jaime A.; Morató Farreras, Jordi; Rengifo Canizales, Edwin
• Tipo de recurso: Article of journal
• Fecha de publicación: 2018
• Institución: Universidad de Ciencias Aplicadas y Ambientales U.D.C.A
• Repositorio: Repositorio Institucional UDCA
• Idioma: spa
• OAI Identifier: oai:repository.udca.edu.co:11158/1555
• Acceso en línea: https://revistas.udca.edu.co/index.php/ruadc/article/view/971; https://doi.org/10.31910/rudca.v21.n2.2018.979
• Palabra clave: Materia orgánica; Nutrientes; Plomo; Heliconia psittacorum; Cyperus haspan; Materia orgánica; Heliconia psittacorum; Cyperus haspan
• Rights: openAccess
• License: Derechos Reservados - Universidad de Ciencias Aplicadas y Ambientales, 2018