Avaliação das cargas poluentes geradas em uma bacia urbana em Fortaleza - CE

Abstract

In more developed countries, even though there are efforts for monitoring, there is not a frequent concern with structural problems related to basic sanitation due to modern rain drainage infrastructure, water supply, sewage systems, and projects related to collection, treatment and disposal end of solid waste. However, in less developed countries, basic sanitation is still a problem that needs attention and efforts in order to minimize the impasses related to it. The purpose of this study is to carry out a load analysis on the channel that connects the Parangaba lagoon to the Santo Anastácio reservoir, located in the city of Fortaleza, capital of Ceará, using data related to Biochemical Oxygen Demand (BOD) and Chemical Oxygen Demand (COD), and flows in dry and rainy periods to the same channel and through a mass balance, propose a way to estimate the load from sewage and the possible load from solid waste. With the estimated loads, it was possible to transform them into indicators per capita in order to compare with data from the literature and verify the influence of waste in the drainage channel. The results show that, according to the methodology used, the separation of loads presented values consistent with values mentioned in the literature, thus being able to serve as a basis to estimate the approximate amount of waste that is thrown in a channel, and, thus, assist in planning and improvements to a drainage system.