Analysis of Ozone Efficiency in Hospital Liquid Effluents

  • Aline Francisca de Souza UEL
  • Carlos Henrique Zanelato Pantaleão UNIOESTE

Abstract

Although residues are a consequence of industrial and urban development, hospital wastes, mainly liquid residues, need particular caution due to the great among of chemicals which is discharged into the sewage network by hospitalized patients’ metabolism. Efficient pre-treatment methods which do not generate contaminating wastes during treatment are required owing to the presence of contamination-indicating microorganisms and to harm caused when wastes are deposited in the environment. Current research mainly evaluates the efficiency of ozone-treated hospital liquid effluents. Ozone generation with a discharge of 60 kV and outflow of 50 L/H was used. Six assays were undertaken in which microbial decrease rate was evaluated. Rate was related to the gas’s contact time, ranging from 10 to 20 min, with a sample of liquid effluent. Since samples failed to produce satisfactory results with regard to disinfection, causes may have been organic matter, pH in non-efficient concentrations and/or failures in the setting and functioning of the ozone generator. Improvements in ozone generation and other techniques, such as membrane filtration technique, prior to ozone application, may positively affect the final result of assay

Author Biographies

Aline Francisca de Souza, UEL
Acadêmica da Especialização em Bioquímica Aplicada da Universidade Estadual de Londrina – UEL. E-mail: alinefsmga@hotmail.com
Carlos Henrique Zanelato Pantaleão, UNIOESTE
Docente do Curso de Engenharia Elétrica – Parque Tecnológico de Itaipu da Universidade Estadual do Oeste do Paraná – UNIOESTE. E-mail: eng_pantaleao@yahoo.com.br
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Artigos Originais