A case study on the treatment and recycling of the effluent generated from a thermo-mechanical pulp mill in Brazil after the installation of a new bleaching process
作者： Daiane Cristina Diniz Caldeira , Cláudio Mudadu Silva , Jorge Luiz Colodette , Fábio de Ávila Rodrigues , Rafles Anselmo Da Mata
DOI: 10.1016/J.SCITOTENV.2020.142996
关键词:
摘要: A Brazilian thermo-mechanical pulp mill (TMP) was evaluating the installation of a proposed bleaching process, with changes in qualitative and quantitative characteristics wastewaters Effluent Treatment Plant (ETP). The objectives this research were to evaluate treatment plant configuration for future industrial effluent, consisting flotation unit followed by an upflow anaerobic sludge blanket reactor (UASB), activated process nanofiltration (NF) using polymeric membranes, study technical feasibility recycling treated effluents process. possible options effluent determined through water balance mill. quality evaluated laboratory assays, based on brightness reversion tests after 50%, 75% 100% effluent. buildup non-process elements (NPE) cycle each proportion computer simulation, Aspen Plus® simulator software. considering implementation stage hydrogen peroxide, generated bench-scale plant, simulating configuration. removed 99.8%, 99.2% 61.6% soluble COD, BOD5 color, respectively. consumption highest and, therefore, washing simulated. pulp, used similar those provided fresh water. TMP without decreasing quality.
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