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Tipo de material : bachelorThesis
Título : Evaluación de la eficiencia de remediación de aguas residuales grises mediante un sistema basado en microalgas
Autor : Merino Padrón, Natalia Priscila
Tutor : Guerrero Latorre, Laura
Palabras clave : BIORREMEDIACIÓN;AGUAS RESIDUALES;MICROALGAS;TRATAMIENTO DEL AGUA
Fecha de publicación : 2017
Editorial : Quito: Universidad de las Américas, 2017
Citación : Merino Padrón, N. P. (2017). Evaluación de la eficiencia de remediación de aguas residuales grises mediante un sistema basado en microalgas (Tesis de pregrado). Universidad de las Américas, Quito.
Resumen : La desmedida e incontrolada descarga de aguas residuales grises al ambiente ha causado graves problemas ambientales y de abastecimiento a nivel mundial...
Descripción : The uncontrolled discharge of gray wastewater into the environment has caused serious environmental and supply problems worldwide. The agricultural sector is facing a critical water deficit situation, which, in Ecuador, presents with greater problems in the provinces of Central sierra. Faced with this problem, several water remediation mechanisms have been proposed, among which biological treatments stand out. Microalgae are photosynthetic microorganisms that have the capacity to grow in wastewater media and at the same time reduce the pollutant load. The present study evaluated the efficiency of remediation of gray wastewater in the province of Cotopaxi through a system based on microalgae, collected in reserves from the region, with the aim to determine the most efficient remediation treatment. For this, the strains Chlorella sp, Pleurococcus sp, and Chlorococcum sp. were analyzed as well as microalgal growth kinetics (mircometer and td) for 25 days. The indexes of water quality parameters in each experimental unit with gray residual water were analyzed with and without the application of Nitrofoska (1mL/L) foliar fertilizer. The results showed that the studied strains grow and replicate adequately in a medium of gray residual water from the same region. The study of the different strains shows no significant difference between them for the treatment of gray wastewater. However, Chlorella sp, exhibited increased kinetic development and yield. The addition of the fertilizer did not show a positive effect on the growth of any of the studied strains. All microalgal treatments indicated a significant reduction of pH, surfactants, COD and total coliforms including controls. However, electrical conductivity demonstrated an exclusive reduction in microalgal treatments with the application of Nitrofoska. Gray wastewater treated by endemic microalgae fulfills with the regulations imposed by the Ministry of the Environment for irrigation waters, except for total coliform levels, indicating the feasibility of this system once has been supplemented with disinfection techniques.
URI : http://dspace.udla.edu.ec/handle/33000/8177
Aparece en las colecciones: Ingeniería en Biotecnología

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