Evaluación de la calidad del agua en el caño Maizaro a partir de parámetros fisicoquímicos, microbiológicos y aplicación de índices de contaminación en un periodo de 4 meses.

Abstract

The superficial sources of water are exposed to the deterioration due to the presence of pollutants of natural origin and antropogénico and for ende there has been generated the need to quantify and evaluate the quality of the water of the same ones, consistently a study was realized in the river Maizaro in Villavicencio, Meta. The work was developed from September 2017 to October, 2018 in epoch of summer transition to winter.This process was evaluated across the application of the model of Ramirez et to., 1997, named Indexes of Pollution of the Water (ICO's), which incorporate variables physicochemical (pH, temperature, oxygen disuelto, saturation of oxygen, conductivity, total alkalinity, total hardness, nitrates, nitrites, I phosphorate total, solid total, solid sedimentables, DBO and DQO); in the microbiological part presence or absence was evaluated of coliformes total and Escherichia coli with methodology colilert. As the first step, the physicochemical parameters were analyzed across the comparison by the Resolution 2115 of 2007 and the Resolution 0631 of 2015, as well as also the application of descriptive statistics across the software IBM SPSS. As the second step, there was realized the group and execution of the indexes of pollution, developed four indexes, Index of Pollution for Solid ICOSUS, Index of Pollution Trófico (ICOTRO), the Index for the pH (ICOpH) and Index of Pollution by Mineralization (ICOMI). A sampling was planned every 15 days, with the taking of 5 samples in the five points selected in the dates indicated for 4 months. The results obtained in laboratory were analyzed using the IT tool ICATEST V 1.0 that has as purpose facilitate the diagnosis of the water quality in water sources in Colombia.The values obtained by the indexes as for pH and to solid suspended no type of pollution is brought due to the fact that the values of the ICOpH are minor to 0,2 for all the dates and ICOSUS's values is of 0. For the index of pollution trófica present a characteristic of eutrofia and finally for the index ICOMI obtuvó low variability and a half presenting pollution by mineralization.