Menezes, Marina Bahia deBorges, Tatiane AparecidaPassos, FabianaAquino, Sergio Francisco deSilva, Silvana de Queiroz2021-11-242021-11-242020MENEZES, M. B. de et al. Evaluation of a combined system based on an Upflow Anaerobic Sludge Blanket Reactor (UASB) and Shallow Polishing Pond (SPP) for textile effluent treatment. Brazilian Archives of Biology and Technology, v. 63, p. e20180130, 2020. Disponível em: <https://www.scielo.br/j/babt/a/xwnTCT3GmCY9TKYpFGn8Qbh/abstract/?lang=en>. Acesso em: 10 jun. 2021.1678-4324http://www.repositorio.ufop.br/jspui/handle/123456789/14023Color removal from textile effluents was evaluated using a laboratory-combined process based on an upflow anaerobic sludge blanket (UASB) reactor followed by a shallow polishing pond (SPP). The anaerobic reactor was fed with a real textile effluent, diluted 10-times in a 350 mg/L solution of pre-treated residual yeast extract from a brewery industry as nutrient source. The parameters color, COD, N-NH3 and toxicity were monitored throughout 45 days of operation. According to the results, decolorization and COD removal were highest in the anaerobic step, whereas the effluent was polished in the SPP unit. The overall efficiency of the complete UASB-SPP system for COD and color were 88 and 62%, respectively. Moreover, the N-NH3 generated by the residual yeast extract ammonification was below 5 mg/L for the final effluent. Finally, no toxicity was detected after the treatment steps, as shown by the Vibrio fischeri microscale assay.en-USabertoAnaerobic-aerobic treatmentResidual yeastVibrio fischeri.Artigo publicado em periodicoSubmitted for possible open access publication under the terms and conditions of the Creative Commons Attribution (CC BY NC) license (https://creativecommons.org/licenses/by-nc/4.0/). Source: The article PDF.https://doi.org/10.1590/1678-4324-2020180130