Desenvolvimento de um modelo difuso de DBO e OD para o estudo da qualidade da água do Reservatório Gavião, Fortaleza/Ce

Abstract

Water resources are fundamental for human survival and for the development of anthropic activities, being of utmost importance the search for tools that may help their use and their preservation. Mathematical modeling can provide a result that is very close to reality, but requires large data series for the model to be efficiently calibrated. With this, the Fuzzy Theory is being widely used since it does not require much data to provide satisfactory results. In this study, a water quality model was applied in the Gavião Dam, which supplies Fortaleza, using the diffuse number theory to analyze BOD and DO. In order to obtain the results, a computational program was developed that allowed the simulations to be performed. From the results, it was observed that in the rainy season the concentration of oxygen present in the water will be higher and, consequently, the lower the concentrations of BOD in the reservoir, the reverse occurring during periods of drought. It was also verified the applicability of the Fuzzy Theory in the calculation of the parameters BOD and DO, since the data present more probable and less probable values of occurrence, being of great scientific value and likely to provide adequate results.