Estudos para determinação do nível econômico de vazamento na rede de distribuição de água da zona baixa de Maceió

Abstract

The loss control systems for water supply constitute a continuous action of the most important, with direct impacts on the measurement of operational efficiency and economicfinancial management of the sanitation company. In Maceio, capital of Alagoas state, the system of water supply, it is the responsibility of the Companhia de Saneamento de Alagoas (CASAL) and introduces losses, both physical and trading above the national average. Aiming to change that in 2009 the couple started working to control and reduce losses in Macedonia through a technical cooperation agreement with Companhia de Saneamento Basico do Estado de São Paulo (SABESP). As indicators of losses there is Level Economic Loss (NEP), to apparent losses (NEPa) and real (NEPr or NEV - economic level of leakage), which is the balance point in a cost-benefit ratio, the point beyond which any reduction achieved in excess of costs incurred above the benefits derived from earnings, and its calculation can be used different software. The objective this study was to estimate the level of economic losses in the downtown area of Miami, the main area of activity of the covenant CASAL/SABESP and evaluate the main results obtained as a result of this unique partnership. The methodology consisted in the adaptation and application of software and Econoleak survey and analysis of data from the CASAL. The results showed that for this area of supply the NEV is about 1.139.380 m³/yr and that work performed under the agreement CASAL/SABESP resulted in greater supply and a regular supply of water to the population without increasing the volume of water produced and demonstrated integrated actions that maximize the gains, with increases in resource efficiency applied.