MODELO EXPERIMENTAL DE DESINFECÇÃO DE ESGOTO SANITÁRIO USANDO ÁCIDO PERACÉTICO.

Authors

  • Leandro Henrique Martins Dias
  • Jeanette Beber de Souza
  • Carlos Magno de Sousa Vidal
  • Grasiele Soares Cavallini

DOI:

https://doi.org/10.18316/95

Abstract

A desinfecção de esgotos sanitários tem como objetivo a inativação de microrganismos patogênicos visando a minimizar a proliferação de doenças de veiculação hídrica. No presente estudo, investigou-se o uso do ácido peracético (APA) como agente desinfetante de efluente secundário de Estação de Tratamento de Esgotos (ETE). Os microrganismos indicadores empregados para verificar a eficiência da desinfecção foram coliformes totais (CT) e Escherichia coli. Verificouse efetiva inativação de CT e E. coli para as concentrações aplicadas de APA de 5,0 e 10,0 mg.L-1, para os tempos de contato de 10 e 20 minutos.

Palavras-chave: tratamento de esgoto; desinfecção; ácido peracético; Escherichia Coli; coliformes totais

ABSTRACT

Experimental model of wastewater disinfection using peracetic acid. The sanitary wastewater disinfection has as its objective the inactivation of pathogens in order to minimize disease proliferation of hydric vehiculation. In the current study, it was investigated the use of peracetic acid (PAA) as a disinfecting agent of effluent from the wastewater treatment plant (WWTP). The indicator microorganisms applied to check the disinfection efficiency were total coliforms and Escherichia coli. Na effective inactivation of total coliforms and Escherichia coli was checked for the applied concentrations of PAA of 5.0 and 10.0 mg.L-1 for contact time from 10 and 20 minutes.

Key words: wastewater treatment, disinfection, peracetic acid, Escherichia coli, total coliforms

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Issue

Vol. 3 No. 2 (2009)

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Artigos

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