Wastewater Chlorination for Reuse, an Alternative for Small Communities

Autor(es)

Quartaroli, Larissa ^[1] ; Cardoso, Barbara Henrique ^[1] ; Ribeiro, Gabriela de Paula ^[1] ; Ribeiro da Silva, Gustavo Henrique ^[1]

Afiliação do(s) autor(es)

^[1] Sao Paulo State Univ UNESP, Sch Engn Bauru, Dept Civil & Environm Engn, Av Engn Luiz Edmund Carrijo Coube 14-01, BR-17033360 Bauru, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: WATER ENVIRONMENT RESEARCH; v. 90, n. 12, p. 2100-2105, DEC 2018.
• Citações Web of Science: 1

Resumo

Reuse of wastewater is a practice that has been employed all over the world, mainly in agriculture, where the main aim is to reduce the demand for water and provide nutrients. However, these waters for reuse often have excessive amounts of pathogenic microorganisms, requiring a specific disinfection step even after being subjected to a purification process. Thus, this research aimed to evaluate the potential use of calcium hypochlorite and sodium hypochlorite as disinfectant agents for the sanitary effluent of the treatment system based on constructed wetlands for later reuse. Disinfection tests were carried out in batch, using three dosages of hypochlorite (5, 10 and 15 mg.L-1) and different contact. In all disinfection tests, inactivation of indicator microorganisms (total coliforms and E. coli) was considered effective for the two disinfectant agents adopted, satisfying the criteria for reuse according to the World Health Organization (WHO). There was no formation of trihalomethanes after disinfection tests. (AU)

• Processo FAPESP: 11/10939-7 - Cloração de efluente tratado por alagados construídos visando o reuso de água no campus UNESP - Bauru
• Beneficiário: Barbara Henrique Cardoso
• Modalidade de apoio: Bolsas no Brasil - Iniciação Científica
• Processo FAPESP: 11/10816-2 - Desinfecção de efluentes utilizando cloro, ozônio, ozônio/cloro e ozônio/peróxido de hidrogênio
• Beneficiário: Gustavo Henrique Ribeiro da Silva
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 11/10972-4 - Estudo da desinfecção de efluente tratado por alagados construídos por meio de cloração visando o reúso não potável no campus UNESP - Bauru
• Beneficiário: Gabriela de Paula Ribeiro
• Modalidade de apoio: Bolsas no Brasil - Iniciação Científica