Automatização e otimização de sistemas de lodo ativado em regime de bateladas sequenciais visando à remoção biológica de nitrogênio

• Ano de defesa: 2015
• Autor(a) principal: Mota, Lincoln Soares
• Orientador(a): Haandel, Adrianus Cornelius Van
• Banca de defesa: Oliveira, Rui de , Cavalcanti, Paula Frassinetti Feitosa
• Tipo de documento: Dissertação
• Tipo de acesso: Acesso aberto
• Idioma: por
• Instituição de defesa: Universidade Estadual da Paraíba
• Programa de Pós-Graduação: Programa de Pós-Graduação em Ciência e Tecnologia Ambiental - PPGCTA
• Departamento: Pró-Reitoria de Pós-Graduação e Pesquisa - PRPGP
• País: BR
• Palavras-chave em Português: Lodo ativado; Nitrificação simultânea; Sistema com zonas dedicadas; Águas residuárias
• Palavras-chave em Inglês: Activated sludge; Nitrification simultaneous; System with dedicated areas
• Área do conhecimento CNPq: ENGENHARIAS
• Link de acesso: https://repositorio.uepb.edu.br/handle/123456789/72241

Biological treatment has proven, over the years, a viable alternative for treating wastewater. In the period of over a century that apply biological systems they have developed several processes that made it possible to diversify the goal of treatment, as well as greater efficiency and lower cost. The system displays versatility is probably the activated sludge system. This dissertation addresses the construction and activated sludge systems operation, sequencing batch system (RBS), to obtain the best operating conditions favoring the removal of organic matter and nitrogen from municipal wastewater. The essence of this work is a comparison between two types of systems, with simultaneous nitrification and denitrification and another with distinct zones for nitrification and denitrification. It was also emphasized the influence of automation in these reactors for the operation of treatment systems with minimal human intervention. As conclusion the system with simultaneous nitrification and denitrification is effective for nitrogen removal when operated with a concentration of dissolved oxygen between 0.2 mg / L and 0.3 mg / L. The spreadsheet models developed for systems proved to be an important tool for designing RBS reactors for nitrogen removal. Control of mixed liquor recirculation flow in the system with separate zones is of paramount importance to maintain stable operation of the system and with the proper treatment capacity. Comparing the two configurations studied reactors it is noted that both have the potential to favorably nitrogen removal, but the system with simultaneous nitrification and denitrification had better removal capacity.