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Información tecnológica

versión On-line ISSN 0718-0764

Resumen

SARTORI, Luci; DANIEL, Luiz A  y  SCHULZ, Harry E. Microbiological Quality Adequation of Effluents from Secondary Lagoons by the Application of Ozone. Inf. tecnol. [online]. 2007, vol.18, n.6, pp.83-92. ISSN 0718-0764.  http://dx.doi.org/10.4067/S0718-07642007000600011.

The disinfection of secondary effluents with ozone using Escherichia coli, coliphages and Clostridium perfringens as indicator microorganisms was evaluated. The secondary effluents of Lins Wastewater Treatment Plant and Araraquara in Brazil, were used. The results showed that values of ozone-in-water concentration of 29, 54, 82, 164 and 246 mg min /L for Lins  effluent and 25, 95, 142, 147, 189, 220 and 294 mg min /L for Araraquara effluent were adequate, according to the standards of the World Health Organization for unrestricted irrigation, considering only E. coli concentration. It is concluded that the application of ozone to regulate the microbiological quality of the wastewaters is adequate. However, the efficiency of disinfection is affected by the previous treatment given to the wastes.

Palabras clave : wastewater; disinfection; microorganisms; ozone; microbiological quality.

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