Avaliação (em escala laboratorial) da aplicação do processo eletrolítico em efluente de lagoa de estabilização de esgoto urbano
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Data
2010-01-01
Autores
Claro, Elis Marina Turini
Otenio, Marcelo Henrique
Bidoia, Ederio Dino [UNESP]
Silva, Natália Maria Maciel Guerra
Santos, Valdecir dos
Título da Revista
ISSN da Revista
Título de Volume
Editor
Sociedade Brasileira de Química
Resumo
Physico-chemical and microbiological parameters were evaluated before and after applying an electrolytic process to effluents of a stabilization lagoon, in the presence or absence of salt. Chlorine generation and bactericidal properties of the treatments were studied following two experiments. Effluent pH increased with electrolysis time. In the absence of salt, 20 min electrolysis resulted in a COD (Chemical Oxygen Demand) reduction of 44%, along with ca. 99.9% (3 log10 cfu/mL) reduction in total coliforms, heterotrophic bacteria and Escherichia coli. These results indicated that the electrolytic process is a promising complementary technology to improve effluent quality for stabilization lagoons.
Descrição
Palavras-chave
electrolysis, treatment of effluent, disinfection
Como citar
Química Nova. Sociedade Brasileira de Química, v. 33, n. 3, p. 557-561, 2010.