Contrera, Ronan CleberSilva, Kátia Cristina da CruzSilva, Gustavo Henrique Ribeiro da [UNESP]Morita, Dione MariZaiat, MarceloSchalch, Valdir2016-03-022016-03-022015Brazilian Journal of Chemical Engineering, v. 32, n. 1, p. 73-86, 2015.0104-6632http://hdl.handle.net/11449/135756In some operational circumstances a fast evaluation of landfill leachate anaerobic treatability is necessary, and neither Biochemical Methane Potential nor BOD/COD ratio are fast enough. Looking for a fast indicator, this work evaluated the anaerobic treatability of landfill leachate from São Carlos-SP (Brazil) in a pilot scale Anaerobic Sequence Batch Biofilm Reactor (AnSBBR). The experiment was conducted at ambient temperature in the landfill area. After the acclimation, at a second stage of operation, the AnSBBR presented efficiency above 70%, in terms of COD removal, utilizing landfill leachate without water dilution, with an inlet COD of about 11,000 mg.L-1, a TVA/COD ratio of approximately 0.6 and reaction time equal to 7 days. To evaluate the landfill leachate biodegradability variation over time, temporal profiles of concentration were performed in the AnSBBR. The landfill leachate anaerobic biodegradability was verified to have a direct and strong relationship to the TVA/COD ratio. For a TVA/CODTotal ratio lower than 0.20, the biodegradability was considered low, for ratios between 0.20 and 0.40 it was considered medium, and above 0.40 it was considered high.73-86engLandfill leachateTotal volatile acidsTreatabilityBiodegradabilityAnaerobic sequencing batch biofilm reactorsArtigoAcesso abertoISSN0104-6632-2015-32-01-73-86.pdf9415339655312598