Avaliação da aplicabilidade da tecnologia SODIS para controle da qualidade microbiológica da água consumida por moradores da área da Colônia Juliano de Moreira/RJ

Abstract

The high rate of waterborne diseases in Brazilian rural areas is attributed to inadequate water supply and sewage systems. The consumption of water contaminated by pathogenic microbial agents is responsible for the deaths of two million people all year round in the world. Faced with this problem the disinfection of solar radiation is a simple, low cost and effective solution, which is practiced as a source of energy capable of generating health. The removal of water by sunlight for a few hours, while the concomitant action between temperature and UVA ultraviolet radiation causes death of the thermotolerant microorganisms present in the water. The study evaluated the bacterial decay time and the efficiency of the technique based on the inactivation of Escherichia coli bacteria used as a bioindicator for the analysis of solar disinfection systems under the summer and summer climatic conditions of the city of Rio de Janeiro State of Pedra Branca, within the Juliano de Moreira Colony in the district of Taquara in the city of Rio de Janeiro / RJ, together with the mapping of local community water catchment points and the diagnosis of the SODIS application area. At the same time, they were analyzed as collected water and well water from the study area, which is a selective process of microbiological contamination by Escherichia coli. Based on the field results, SODIS was submitted to a series of three replicates of samples at four collection times, having as water source, well water and the study area. The results of the research were defined as groundwater waters treated with SODIS in a series reached the microbiological standard.