Examinando por Materia "Modelación ambiental"

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  • Miniatura
    PublicaciónAcceso abierto
    Modelación de transporte de nutrientes para el análisis del estado trófico de la Ciénaga de Betancí
    (2021-01-18) García Gallego, Jesús Miguel; Salcedo Salgado, Javier; Torres Bejarano, Franklin Manuel
    nitrogen, total phosphorus, ammonia nitrogen, nitrates, nitrites, phosphates, chlorophyll-a, dissolved oxygen, BOD, COD, suspended solids and water transparency during the dry and rainy seasons; Trophic state indices were evaluated in which the change of mesotrophic state was evidenced in dry season to moderately eutrophic and hypereutrophic in wet season. The hydrodynamic and water quality model MOHID Studio 2016® was implemented, which was calibrated and validated, achieving an adequate adjustment of the calculated data in relation to those measured, which allowed simulating scenarios of increase and decrease of nutrients and incoming flows to the swamp through its main tributaries. The results show that, with the exception of phosphorus, variations in the concentration of total nitrogen and increases in flows present short-term consequences on the trophic state of the swamp, especially in the southeastern area where the tributaries with the highest contribution are found and are they carry out agricultural activities with greater intensity.
  • Miniatura
    PublicaciónAcceso abierto
    Modelación hidrodinámica y de la calidad del agua para evaluar la capacidad de asimilación de vertimientos del río Sinú (tramo Sierra Chiquita-Universidad de Córdoba)
    (2021-07-16) Atencia Osorio, María Camila; Verbel Escobar, Melanie; Torres Bejarano, Franklin Manuel
    The constant pressures to which the water resource is subjected result in the loss of its natural state in terms of decreased water quality and assimilation capacity, and water quality models are tools that can facilitate the study and understanding of these processes in order to create strategies for the management, prevention and mitigation of negative impacts on the resource. The objective of this research was to evaluate the Sinú River assimilation capacity and, at the same time, analyze the effect that wastewater discharges have on said capacity; for this, monitoring of quality parameters (temperature, COD, DO, TN, ammonia nitrogen, phosphates and TSS) were carried out in the river at different seasons and a numerical model was adapted to the study area whose hydrodynamic component is based on the equations of turbulent motion and the quality component on the Advection-Diffusion-Reaction equations. After calibrating and validating the model, scenarios of increase and decrease of discharge concentrations and flows, and river flows were simulated. From the simulations, the river assimilation capacity was evaluated regarding the behavior and dynamics of the discharged pollutants.