Study of constructed wetlands effluent disinfected with ozone

Autor(es)

Miranda, N. D. ^[1] ; Oliveira, E. L. ^[1] ; Silva, G. H. R. ^[1]

Afiliação do(s) autor(es)

^[1] UNESP Univ Estadual Paulista, Fac Engn, Dept Civil Engn, BR-17033360 Bauru, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: WATER SCIENCE AND TECHNOLOGY; v. 70, n. 1, p. 108-113, 2014.
• Citações Web of Science: 4

Resumo

The purpose of this research was to study the disinfection of sanitary effluent from constructed wetlands, evaluating the oxidation of organic matter, the formation of formaldehyde, as well as the efficiency of total coliforms and Escherichia coli inactivation. A constant flow of ozone was applied to the batch system in 5 and 10mg.O-3 L-1 doses with contact times of 5 and 10min. This study revealed that the average values of formaldehyde formation ranged between 259.00 and 379.00 mu g L-1, which means that the values are within World Health Organization recommended values. The total coliforms and E. coli showed complete inactivation in almost all tests. The dose of ozone 5 mg.O-3 L-1 and contact time of 5 min were sufficient for a significant reduction of the concentration levels of pathogens in constructed wetlands effluent with similar characteristics, thus allowing for its agricultural reuse. (AU)

• 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: 12/05297-9 - Desinfecção de efluente sanitário proveniente de uma nova configuração de reator compartimentado anaeróbio/aeróbio utilizando ozônio e ozônio/peróxido de hidrogênio
• Beneficiário: Nathalie Dyane Miranda Slompo
• Modalidade de apoio: Bolsas no Brasil - Mestrado