Artigo
Avaliação (em escala laboratorial) da aplicação do processo eletrolítico em efluente de lagoa de estabilização de esgoto urbano
Fecha
2010-01-01Registro en:
Química Nova. Sociedade Brasileira de Química, v. 33, n. 3, p. 557-561, 2010.
0100-4042
10.1590/S0100-40422010000300012
S0100-40422010000300012
WOS:000276974200012
S0100-40422010000300012.pdf
9220348583560043
0000-0001-7040-1983
Autor
Empresa Brasileira de Pesquisa Agropecuária (EMBRAPA)
Universidade Estadual Paulista (Unesp)
Universidade Estadual do Norte do Paraná (UENP)
Resumen
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.