Eliminación de microalgas de las aguas mediante métodos físicos y químicos

Abstract

This work aims to Microalgae degradation in surface water by physicochemical methods. The presence of algae in water for consumption means a problem to be faced in drinking water treatments plants. For this reason, the viability of several processes in algae elimination is studied. Algae studied (belonging to the genus: Chlorella, Microcystis, Oocystis and Scenedesmus) will be removed by different treatments among which are the coagulation-flocculation (using coagulants of natural origin such as tannins or Moringa oleifera) or chemical oxidation (degradation by UV radiation and ozone oxidation). The study of the degradation of microalgae mentioned above was carried out in four different aqueous matrices: distilled water and water from the Guadiana river, Villar del Rey reservoir and a stream that runs through Badajoz campus. Later microalgae removal was studied in seven Extremadura reservoirs (Alcántara, Arrocampo, Gabriel and Galán, Guadiloba, Plasencia, Valdecañas and Valdesalor.), using the methods mentioned above.