(Laboratory scale) assessment of electrolytic processing of effluent from a urban sewage stabilization lagoon

Quimica nova

Claro, Elis Marina Turini¹  Otenio, Marcelo Henrique¹  Bidóia, Edério Dino²  Silva, Natália Maria Maciel Guerra³ 

[1] Embrapa Gado de Leite, Juiz de Fora;Universidade Estadual Paulista Júlio de Mesquita Filho, Rio Claro, Brasil;Universidade Estadual do Norte do Paraná, Bandeirantes, Brasil

关键词: electrolysis;    treatment of effluent;    disinfection.;   

DOI  :  10.1590/S0100-40422010000300012

学科分类：化学（综合）

来源: Sociedade Brasileira de Quimica

【 摘 要 】

Physico-chemicaland microbiological parameters were evaluated before and after applying an electrolyticprocess to effluents of a stabilization lagoon, in the presence or absence of"salt". Chlorine generation and bactericidal properties of the treatments werestudied following two experiments. Effluent pH increased with electrolysis time.In the absence of "salt", 20 min electrolysis resulted in a COD (Chemical OxygenDemand) reduction of 44%, along with ca. 99.9% (3 log10 cfu/mL) reduction intotal coliforms, heterotrophic bacteria and Escherichia coli. These resultsindicated that the electrolytic process is a promising complementary technologyto improve effluent quality for stabilization lagoons.

【 授权许可】

CC BY