Seleção multicriterial de alternativas para gerenciamento da demanda de água na escala de bairro.

Abstract

The problems of water supplying in cities alert to the necessity of manage water resources considering the economic aspects, socials and environmentals. The traditional optical of the supply management, for only solution of these problems, have showed mistake in the answer of the premises on sustainable development. Into this context this research valued, multicriterialy technological options of management of the water demand a neighbourhood of Campina Grande-PB city. It's about a study of the hypothetical measurement implantation (thrift water health appliances, water reuse, rainwater catchment system, water meter individual in buildings), in houses and buildings, to a reduction the water consumption in this sector. Were studied and developed projects to implement the measures, calculating the costs, investment return and water economy. Had also the participation of the society between home interview to value the measurement acceptability from the neighbourhoods resident. With this study watched that the implementation of the studied measurements will generate a economy of 142,043.12m3/year, that correspond 0,615% of the amount supplied annually to the Campina Grande-PB city and 74,5% of the annual water consumption in this sector. Between the better select measurements by the multiple criteria model (developed in this research) that serve the pre-definite objective are: toilet bowl VDR and thrift appliances.