Laundry wastewater and domestic sewage pilot-scale anaerobic treatment: Microbial community resilience regarding sulfide production

Autor(es)

Moura, A. G. L. ^[1] ; Centurion, V. B. ^[2] ; Okada, D. Y. ^[3] ; Motteran, F. ^[1] ; Delforno, T. P. ^[2] ; Oliveira, V. M. ^[2] ; Varesche, M. B. A. ^[1]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Engn Sch Sao Carlos, Dept Hydraul & Sanitat, Lab Biol Proc, EESC, Campus 2, Sao Carlos, SP - Brazil

^[2] Campinas Univ, UNICAMP, Res Ctr Chem Biol & Agr CPQBA, Microbial Resources Div, Campinas, SP - Brazil

^[3] Campinas Univ, Sch Technol, Div Technol Environm Sanitat, UNICAMP, Limeira, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: Journal of Environmental Management; v. 251, DEC 1 2019.
• Citações Web of Science: 0

Resumo

In this study, the removal of anionic surfactant Linear Alkylbenzene Sulfonate (LAS) from laundry wastewater was evaluated in co-digestion with domestic sewage, using a pilot-scale Expanded Granular Sludge Bed reactor. Surfactant influent concentration was enhanced from 5 +/- 3 mg LAS L-1 (stage I) to 19 +/- 10 mg LAS L-1 (stage II) and 36 +/- mg LAS L-1 (stage III) throughout reactor operation. Sulfide levels higher than 20 mg L-1 influenced LAS removal efficiency, which decreased from 71% to 55% and 32% in stage I, II and III, respectively. Acclimation of microbial population was verified and higher relative abundance of the genera similar to Cytophaga, Bacteroides, Syntrophus and Syntrophobacter in the early stages (adaptation and stage I) was replaced by higher relative abundance of the genera Anaerophaga, Nitrosovibrio, Sulfurovum and Desulfovibrio in the last stages (stage II and III). (AU)

• Processo FAPESP: 15/06246-7 - Aplicação do conceito de biorrefinaria a estações de tratamento biológico de águas residuárias: o controle da poluição ambiental aliado à recuperação de matéria e energia
• Beneficiário: Marcelo Zaiat
• Modalidade de apoio: Auxílio à Pesquisa - Temático
• Processo FAPESP: 16/11948-3 - Remoção de LAS por co-digestão com água residuária de lavanderia comercial e esgoto sanitário em reator EGSB escala piloto
• Beneficiário: Alana Gandra Lima de Moura
• Modalidade de apoio: Bolsas no Brasil - Mestrado