
handle: 11059/14692
Se evaluó la reducción de varios contaminantes de la fuente de abastecimiento de agua para consumo humano, antes del proceso de potabilización de la ciudad de Pereira, empleando para ello diferentes configuraciones de humedales artificiales (CW) a escala de laboratorio, para remover Turbiedad (T), Demanda Química de Oxigeno (DQO) y Coliformes Fecales (CF). Para esto se empleó agua cruda del río Otún, previo a la entrada a las plantas, y se ingresó por ocho (8) tanques de fibra de vidrio, de 0.3mX0.8mX0.6m (BxLxP). Los humedales se evaluaron con dos (2) tipos de flujo, superficial y subsuperficial, dos (2) medios filtrantes, grava y arena, y plantados (Junco Scirpus SP) y no plantados. Los CWs tuvieron un caudal constante de 19.2 L/d, de alimentación de agua cruda a los tratamientos, empleando un programa de muestreo semanal en el afluente y efluente de cada humedal, monitoreando la T, la DQO y los CF, y los parámetros de campo, pH, temperatura y potencial oxido-reducción (ORP); complementariamente, se analizó Color, Hierro, Alcalinidad y Carbono Orgánico Total (COT). Los resultados mostraron remociones estadísticamente significativas, mayor al 45% para la T, superior al 40% para la DQO, y para los CF mayor al 80%, los cuales evidencian la gran utilidad que puede tener la implementación a escala real de ésta tecnología en procesos previos de potabilización del agua, al disminuir significativamente la carga orgánica y patogénica que ingresa a los sistemas de tratamiento, permitiendo así la reducción del consumo de insumos químicos y los costos asociados a éstos The reduction of several contaminants from the source of water supply for human consumption was evaluated, before the purification process of the city of Pereira, using different configurations of artificial wetlands (CW) at laboratory scale, to remove Turbidity (T ), Chemical Oxygen Demand (COD) and Fecal Coliforms (FC). For this, raw water from the Otún River was used, prior to entering the plants, and it was entered through eight (8) fiberglass tanks, 0.3mX0.8mX0.6m (BxLxP). The wetlands were evaluated with two (2) types of flow, surface and subsurface, two (2) filter media, gravel and sand, and planted (Junco Scirpus SP) and not planted. The CWs had a constant flow of 19.2 L/d, feeding raw water to the treatments, using a weekly sampling program in the influent and effluent of each wetland, monitoring the T, the COD and the CF, and the parameters of field, pH, temperature and oxidation-reduction potential (ORP); additionally, Color, Iron, Alkalinity and Total Organic Carbon (TOC) were analyzed. The results showed statistically significant removals, greater than 45% for T, greater than 40% for COD, and greater than 80% for CF, which show the great utility that the full-scale implementation of this technology can have in previous water purification processes, by significantly reducing the organic and pathogenic load that enters the treatment systems, thus allowing the reduction of the consumption of chemical inputs and the costs associated with them Magíster en Ecotecnología
Constructed wetlands, Humedales artificiales, Plantas de potabilización, Subsurface Flow, Tratamiento de aguas residuales, 620 - Ingeniería y operaciones afines::628 - Ingeniería sanitaria, Water pretreatment
Constructed wetlands, Humedales artificiales, Plantas de potabilización, Subsurface Flow, Tratamiento de aguas residuales, 620 - Ingeniería y operaciones afines::628 - Ingeniería sanitaria, Water pretreatment
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