Proof of concept and improvement of a triple chamber biosystem coupling anaerobic digestion, nitrification and mixotrophic endogenous denitrification for organic matter, nitrogen and sulfide removal from domestic sewage

Autor(es)

Souza, Theo S. O. ^[1] ; Okada, Dagoberto Yukio ^[2] ; Foresti, Eugenio ^[3]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Dept Hydraul & Environm Engn, Polytech Sch, Ave Prof Almeida Prado, 83, Trav 2, Cidade Univ, BR-05508900 Sao Paulo, SP - Brazil

^[2] Univ Estadual Campinas, Sch Technol, Rua Paschoal Marmo, 1888, BR-13484332 Limeira, SP - Brazil

^[3] Univ Sao Paulo, Dept Hydraul & Sanitat, Sao Carlos Sch Engn, Ave Trabalhador Sao Carlense, 400, BR-13566590 Sao Carlos, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Bioprocess and Biosystems Engineering; v. 41, n. 12, p. 1839-1850, DEC 2018.
• Citações Web of Science: 0

Resumo

In this study, two versions of a triple chamber biosystem, coupling anaerobic digestion, nitrification and mixotrophic endogenous denitrification (ADNMED), were evaluated and compared. They were designed to maximize the use of endogenous electron donors produced by anaerobic digestion (residual organic matter and sulfide) to abate a portion of the influent nitrogen contained in domestic sewage while removing the inconvenience of effluent sulfide. The first version was able to abate 40% of the influent nitrogen but presented operational and hydrodynamic problems, which resulted in sulfide emissions. A modified second version was proposed, improving the first approach and achieving a nitrogen abatement of more than 60% and a sulfide-free effluent, complying with local emission standards. The results demonstrated that endogenous electron donors produced by anaerobic digestion should not be neglected, and a significant cost reduction in nitrogen removal from domestic sewage could be achieved by exploiting their potential with novel reactor configurations. (AU)

• Processo FAPESP: 12/07375-7 - Remoção de matéria orgânica e de nitrogênio de esgoto sanitário em sistema composto por reator anaeróbio/anóxico interligado a reator nitrificante
• Beneficiário: Dagoberto Yukio Okada
• Modalidade de apoio: Bolsas no Brasil - Pós-Doutorado
• Processo FAPESP: 07/58659-7 - Desnitrificação autotrófica usando sulfeto como doador de elétrons para remoção de nitrogênio de efluentes de reatores anaeróbios utilizados no tratamento de esgotos sanitários
• Beneficiário: Theo Syrto Octavio de Souza
• Modalidade de apoio: Bolsas no Brasil - Doutorado Direto
• Processo FAPESP: 09/15984-0 - Produção de bioenergia no tratamento de águas residuárias e adequação ambiental dos efluentes e resíduos gerados
• Beneficiário: Marcelo Zaiat
• Modalidade de apoio: Auxílio à Pesquisa - Temático