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

Química Nova

Santos, Valdecir dos¹  Silva, Natália Maria Maciel Guerra¹  Bidóia, Edério Dino¹  Claro, Elis Marina Turini¹  Universidade Estadual do Norte do Paraná, Bandeirantes, Brasil¹  Universidade Estadual Paulista Júlio de Mesquita Filho, Rio Claro, Brasil¹  Embrapa Gado de Leite, Juiz de Fora¹  Otenio, Marcelo Henrique¹ 

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-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.

【 授权许可】

Unknown