Aplicação da teoria Fuzzy no modelo de Streeter-Phelps para o cálculo do risco de contaminação das águas de rios, em função da temperatura

• Ano de defesa: 2016
• Autor(a) principal: Barros, Jessyca Costa
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Palavras-chave em Português: Saneamento; Equações diferenciais; Água - Poluição
• Link de acesso: http://www.repositorio.ufc.br/handle/riufc/21469

This work developed a methodology, based on the application of Fuzzy Theory in Streeter-Phelps model to study the fuzzy risk of contamination of river water. For this, the differential equations of the Streeter-Phelps model are transformed into differential equations "Fuzzys", so that the concentrations of the field represented by mathematical model becomes a membership functions fields. The model developed was applied to pre-set scenarios in which were varied values temperature, aeration coefficient (Ka) and the concentration of BOD in the effluent, with order to verify the effectiveness of the computational model and the parameters of influence model the mechanics of rivers, as well as, allow the assessment of risk and reliability water contamination. When analyzing the results it was found that for more Ka values ​​less risk of the system fails, for DO control variable. For DBO control variable, the risk of the system failing is lower for temperatures high and low concentrations of BOD effluent. This research showed that the Theory Fuzzy can become a safe alternative to pollution control aid of the rivers in Overall, thus providing grounds for Water Management