Aplicação de um modelo matemático para estudar a qualidade de água do rio Piranhas-Açu/RN tomando como referência os parâmetros DBO e coliformes termotolerantes

Abstract

In an attempt to find mechanisms that assist in quality diagnosis of water from natural rivers in a practical way, this research deals with the analysis of BOD and fecal coliform parameters, using the Streeter-Phelps simplified model based on one case study of the river Piranhas-Açu, Rio Grande do Norte. From the results, it was found that for higher flows of the river and lower concentrations of the effluents, the water bodies can dilute the pollutant loads more efficiently, allowing greater release of possibilities under the current legislation, as provided in literature. It was also observed that in periods of drought, the monitoring of these water resources should be carried out more rigorously, as there is an increased likelihood of the presence of pollutants in high concentrations. This study can help establish in a simple way the criteria for assessing water quality, facilitating decision-making on the part of environmental managers.