Caracterização e avaliação do uso de águas de chuva para fins potáveis

by Tordo, Olga Catarina

Abstract (Summary)
The decreasing availability of drinking water is a problem that has been around for some time and one that continues to get worse, due especially to population increases and pollution of water resource. This leads us to look for new ways to be able to make use of water. The overall objective of this study is to qualitatively classify rainwater collected on the roofs of buildings and assess its potential as drinking water after it has undergone simple filtration and been disinfected by ultraviolet radiation. The classification is done by analyzing a series of physio-chemical parameters in rainwater samples collected from three different types of rooftop ? fibre-cement, ceramic and metal ?in each of three different districts of the city of Blumenau (Asilo, Jardim Blumenau and Downtown). The following parameters were measured in each rainwater sample: pH, total alkalinity, presence of chlorides, apparent colour, total hardness, temperature, turbidity, iron and silica content, coliforms and presence of Escherichia coli. To evaluate the possibility of this water being fit to drink, a sensorial analysis test was carried out where non-trained testers were asked to taste the water samples. In relation to the latest Ministry of Health regulation (No. 518 ? 25 March, 2004), the quality of the rainwater was generally acceptable. The results of this sensorial analysis demonstrate the need to make every effort to persuade potential consumers to accept this alternative source of drinking water.
This document abstract is also available in Portuguese.
Bibliographical Information:

Advisor:Roberto Fendrich; Marcos Rivail da Silva; Ademar Cordero; Adilson Pinheiro

School:Universidade Regional de Blumenau

School Location:Brazil

Source Type:Master's Thesis

Keywords:Drinking water Rainwater


Date of Publication:08/27/2004

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