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(Reference retrieved automatically from SciELO through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Microbiological Quality Adequation of Effluents from Secondary Lagoons by the Application of Ozone

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Author(s):
Luci Sartori [1] ; Luiz A Daniel [2] ; Harry E Schulz [3]
Total Authors: 3
Affiliation:
[1] Universidad de São Paulo. Escuela de Ingeniería de São Carlos. Departamento de Hidráulica y Saneamiento - Brasil
[2] Universidad de São Paulo. Escuela de Ingeniería de São Carlos. Departamento de Hidráulica y Saneamiento - Brasil
[3] Universidad de São Paulo. Escuela de Ingeniería de São Carlos. Departamento de Hidráulica y Saneamiento - Brasil
Total Affiliations: 3
Document type: Journal article
Source: Información tecnológica; v. 18, n. 6, p. 83-92, 2007-00-00.
Abstract

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. (AU)