Water losses in public water network supply : diagnostic, control and reduction method by the geographic information system / Perdas fisicas de agua em sistemas de abastecimento : metodo de diagnostico, controle e redução atraves de sistema de informações geograficas

AUTOR(ES)
DATA DE PUBLICAÇÃO

2008

RESUMO

Nowadays, the water for human consumption has been adding social and economic considerable values, due to its strategic relationship between the increasing demand in detriment to the offer, tending to scarcity, mainly in the big centers, so the occurrence of high levels of physical losses, in the water supply system (WSS), has become a great problem to be faced, seeking for technical solutions that are able to reduce the indicators to the minimum acceptable levels. In this context the present dissertation wants to show the relationship between dynamic pressure, age and type of material of pipeline and physical losses in the water supply systems (WSS), offering a diagnostic and control model of physical losses, based on the integration of a Geographic Information Systems (GIS) and a hydraulic model, developed to the study area network supply, have joined information from the technical survey, monitoring the flowing (offered and consumed) and of dynamic pressure, shown in the interest area, as well as, the occurrence data of ruptures and leakage in the WSS, raised in the information system of services (SIS), trying to confer to the analysis process, dynamism and reliability. Through the assessment, manipulation and the analysis of the contemporary data, monitored in field and the theoretical correlations, it is possible to identify the occurrence of physical losses in the components of WSS, as well as, diagnose the close location, promotion more operational agility in the control and reduction of physical losses. To apply the practice, it is chosen a pilot area, called Ponte Grande, which had inserted in the established areas in the activities of the Committee for Internal Control and Reduction of Water Losses (ICRWL) for the Serviço Autônomo de Água e Esgoto (SAAE) in the municipality of Guarulhos-SP., to where, It was developed a hydraulic model and monitoring campaigns inside the area in question, seeking to get and check the data and the necessary information for the hydraulic model calibration to the primary and secondary water distribution network. Through the dynamic pressure data, network technical register verification, demand and consumption water data, it was possible to establish a correlation with physical losses operational occurrence data, allowing some conclusions, such as, verify that most of the incidences of physical losses occurs where the dynamic pressure gradient is high and, above all, where this gradient coincides with piping parts, whose installations are old and the material used was cast iron. It is possible, to evaluate, with this study, the necessity of replacing the piping, through a priority plan, according t the age and type of material used, seeking for the reduction of water physical losses

ASSUNTO(S)

hydraulic models hidraulica - modelos abastecimento de água water supply agua - distribuição water sistema de informações geograficas geographic information system

ACESSO AO ARTIGO

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