Resumo

RUIZ DIAZ, L  e  CABALLERO, N. APPLICATION PROCESS FOR PURIFICATION PHOTOCHEMICAL DRINKING WATER UNIVERSITY CAMPUS CITY OF SAN LORENZO. Compend. cienc. vet [online]. 2015, vol.5, n.2, pp.18-22. ISSN 2226-1761.  https://doi.org/10.18004/compend.cienc.vet.2015.05.02.18-22.

ABSTRACT. The campus of San Lorenzo has 18 artesian wells that provide water to the different academic units , six of which showed varying degrees of bacterial contamination which were monitored in the laboratory in order to select one to perform tests disinfection. The degree of contamination of these was determined , choosing the one with highest bacterial load , represented by E. coli , to take the samples, were subjected to treatment using the technique of Solar Heterogeneous photocatalysis using TiO₂ (titanium dioxide ) as a catalyst . The treatment was performed at different times of year, July 2010 to September 2011 using a spherical static reactor mounted on a metal stand with a reflective surface mobile polished aluminum, the working temperature was maintained between 15-45 ° C and samples were taken at time intervals of 1.5 to 5 hours of exposure to solar radiation. The results obtained by this method confirm its effectiveness, even with minimal exposure time, no bacterial growth was observed within 48 h after treatment.

Palavras-chave : disinfection; solar heterogeneous photocatalysis; E.coli; titanium dioxide.

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