Estimativa automática de custos de implantação de sistemas de esgotamento sanitário

Abstract

The World Health Organization (WHO) points out that every US$1.0 invested in sanitation generates a US$4.3 saving in health. Despite this, there is still a large deficit in access to basic services in Brazil, especially with regard to sanitary sewage. It is urgent, therefore, the need for planning directed to the attendance with sewage system, treatment and correct destination of the sludge, a task that requires caution and careful technical-economics studies. In this sense, the main objective of the work was to automate the calculation of cost estimates for the implementation of sanitary sewage systems, aiming to provide subsidies for decision making in the sector. The program was developed in Visual Studio, using the Visual Basic programming language. Initially, a broad bibliographic review was carried out about the major units that compose a sanitary sewage systems (collecting system, interceptors, pumping stations, outfalls, treatment stations, and sewage sludge treatment). Next, the program's interface was developed, as well as the entire logical sequence of instructions, with subsequent testing to verify that the results obtained and the automations were being correctly performed. Finally, a program was developed that allows the estimation of implementation costs for all units of a sanitary sewage systems, updated for the desired date, throught the providing some data by the user, a propitious tool to accelerate the process of evaluation of project alternatives in this sector, and, furthermore, its functionality was demonstrated through the application in a real situation for the city of Bom Jesus - PB.