Tratamento de efluentes líquidos na Estação Antártica Comandante Ferraz (EACF): avaliação da aplicabilidade do processo eletrolítico.

• Ano de defesa: 2008
• Autor(a) principal: Rodriguez, Carmen Josefa Miguelez
• Orientador(a): Giordano, Gandhi
• Banca de defesa: Bila, Daniele Maia , Trindade, Roberto de Barros Emery
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade do Estado do Rio de Janeiro
• Programa de Pós-Graduação: Programa de Pós-Graduação em Engenharia Ambiental
• Departamento: Centro de Tecnologia e Ciências::Faculdade de Engenharia
• País: BR
• Palavras-chave em Português: Controle de efluentes líquidos; Tratamento de águas de abastecimento e residuárias; Processo eletrolítico; Esgotos; Estação Antártica Comandante Ferraz (EACF)
• Palavras-chave em Inglês: Wastewater treatment; Electrolytical process; Sewage treatment; Ferraz Station (Brazil), Antarctica
• Área do conhecimento CNPq: CNPQ::ENGENHARIAS
• Link de acesso: http://www.bdtd.uerj.br/handle/1/10889

This research focuses on the use of the electrolytical process as alternative for treatment of wastewater in Ferraz Station, considering the local environmental limitations, and aspects of consumption of energy. This process, classified as unconventional, has been studied by the national and international scientific community to treat several effluents, besides domestic sewage, presenting several advantages which stimulated the verification of its applicability in the peculiar conditions of Ferraz Station. Laboratory experiments, with domestic sewage collected in a condominium in Rio de Janeiro were accomplished using electrolytical reactors of 4 L, with electrodes of aluminum (Al) and of iron (Fe), distance between the plates of 0,9 cm and 1,8 cm, temperatures, in the strip from 7ºC to 22ºC, and analyses laboratories for verification of its efficiency through COD, BOD5, Suspended Solids, turbidity and generated sludge. Under temperature of 15ºC and conditions of conductivity of 900 µS/cm, estimated for the station sewage, applying density of current of 22,9 A/m2, 4,5 V, time of retention of 25 min, the results presented values of COD in the treated effluent of 65 mg/L (reduction of 89%), BOD of 56 mg/L (reduction of 64%), Suspended Solids of 8 mg/L, with turbidity of 11,3 Tu and after filtration 3,2 Tu, consumption of energy of 0,8 Wh/L. Its appearance is very clean and the final result is compatible to be submitted to disinfection treatment. Based on the obtained data, the viability of its implantation in container, the estimate of consumption of energy and generated sludge and maintenance requirements, operation, besides the monitoring suggestion, and mitigating measures of environmental impacts were evaluated in a preliminary project.