Biomass growth and its mobility in an AnSBBR treating landfill leachate

Autor(es)

Contrera, Ronan Cleber ^[1] ; Lucero Culi, Mario Jose ^[1] ; Morita, Dione Mari ^[1] ; Domingues Rodrigues, Jose Alberto ^[2] ; Zaiat, Marcelo ^[3] ; Schalch, Valdir ^[4]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, EP, Dept Engn Hidraul & Ambiental PHA, Ave Prof Almeida Prado, 83 Tray 2, Cidade Univ, BR-05508900 Sao Paulo, SP - Brazil

^[2] IMT, EEM, Praca Maua 1, BR-09580900 Sao Caetano do Sul, SP - Brazil

^[3] Univ Sao Paulo, LPB, Dept Hidraul & Saneamento SHS, EESC, Engn Ambiental, Bloco 4-F, Ave Joao Dagnone 1100, BR-13563120 Sao Carlos, SP - Brazil

^[4] Univ Sao Paulo, EESC, Dept Hidraul & Saneamento SHS, Ave Trabalhador Sao Carlense 400, BR-13566590 Sao Carlos, SP - Brazil

• Tipo de documento: Artigo Científico
• Fonte: WASTE MANAGEMENT; v. 82, p. 37-50, DEC 2018.
• Citações Web of Science: 1

Resumo

This work used a pilot scale (with a total volume of 1300 L) Anaerobic Sequencing Batch Biofilm Reactor (AnSBBR) to treat landfill leachate from Sao Carlos-SP (Brazil) as well as to evaluate the biomass growth and its behavior. Biomass from the bottom of a landfill leachate stabilization pond was immobilized in polyurethane foam cubes as inoculum. The leachate characteristics varied during the experiment. Ethanol or volatile fatty acids were added as additional substrate when the leachate was temporarily recalcitrant. After acclimation, the AnSBBR presented efficiency over 70% (COD removal). A mass balance model, biomass sampling and temporal concentration profiles were performed to obtain a biomass yield coefficient of Y-x/s = 0.0251 +/- 0.0006 g(TVS) g(COD) (removed) (r(2) = 0.999). Additionally, it was observed that a variable fraction of the attached biomass may detach itself or present mobility during the batch time, however returning to fixed bed depending on the substrate type and concentration. This behavior has never been reported by the literature for attached biomass. (C) 2018 Elsevier Ltd. All rights reserved. (AU)

• Processo FAPESP: 03/04812-8 - Avaliacao de reator anaerobio em batelada sequencial em conjunto com lodos ativados em batelada sequencial para tratamento biologico de liquidos percolados de aterros sanitarios.
• Beneficiário: Ronan Cleber Contrera
• Modalidade de apoio: Bolsas no Brasil - Doutorado
• Processo FAPESP: 03/04602-3 - Avaliacao de reator anaerobio em batelada sequencial em conjunto com lodos ativados em batelada sequencial para tratamento biologico de liquidos percolados de aterros sanitarios.
• Beneficiário: Valdir Schalch
• Modalidade de apoio: Auxílio à Pesquisa - Regular