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Technical and economic viability analysis of rain water use in a metal-mechanic industry in the metropolitan region of Curitiba, Parana state, Brazil

Abstract

This study aims to verify the possibility of rainwater use in a metal-mechanic industry in the municipality of São José dos Pinhais, metropolitan region of Curitiba, considering the rainfall and the characteristics of rainwater quality in the region, as well as the needs of this industry. A simulation of the charging for water use and emission of effluents into a nearby stream was also conducted. Results of this evaluation showed that the exploitation of rainwater might be feasible due to the hydrological behavior of the region and the quality of such water, which was verified by laboratory testing. In addition, a simulation was conducted to estimate the possible economy with respect to payment for water collection and effluent emission, as well as to the investment in the proposed reservoir for rainwater storage.

Keywords:
Rainwater utilization; Reuse in industry; Charging for water use

Universidade Federal de São Carlos Departamento de Engenharia de Produção , Caixa Postal 676 , 13.565-905 São Carlos SP Brazil, Tel.: +55 16 3351 8471 - São Carlos - SP - Brazil
E-mail: gp@dep.ufscar.br