Dinâmica térmica e do oxigênio dissolvido do açude Edson Queiroz, Santa Quitéria-CE

Abstract

The study uses the CE-QUAL-W2 software to model the hydrodynamics and dissolved oxygen of the Edson Queiroz reservoir, considering environmental and anthropogenic influences. Highlighting the importance of water for society and the need for good management of water resources to ensure the quality and quantity of water available, addressing the influence of rainfall seasonality in Ceará and how this affects water quality parameters. The Edson Queiroz reservoir is essential for the supply of the city of Santa Quitéria, so the objective of this work is to evaluate the thermal and water quality standards of the Edson Queiroz dam, in Ceará. The methodology used includes the collection of meteorological and water quality data, the analysis of the thermal patterns of the reservoir and dissolved oxygen. Weather data included air temperature, dew point temperature, wind speed and direction, and cloud cover. The water quality data used as input in the model were water temperature and dissolved oxygen. The data were entered into the CE-QUAL-W2 software, which is a 2D (longitudinal-vertical) water quality and hydrodynamics model. The results show significant variations in water temperature and dissolved oxygen, obtaining an average value of 27.1°C, a maximum of 33.7°C and a minimum of 19.5°C for temperature and an average value of 30.6 mg/L, a maximum of 44.7 mg/L and a minimum of 5.1 mg/L for dissolved oxygen, indicating the thermal stratification of the reservoir and the influence of external factors such as climate variability and rainfall. It is concluded with this study that water quality modeling is an important tool for the sustainable management of water resources in the Edson Queiroz reservoir.