Fish canning wastewater treatment by activated sludge: Application of factorial design optimization

Raquel O. Cristóvão; Cristiana Gonçalves; Cidália M. Botelho; Ramiro J.E. Martins; J.M. Loureiro; Rui A.R. Boaventura

doi:10.1016/j.wri.2015.03.001

Water Resources and Industry (Jun 2015)

Fish canning wastewater treatment by activated sludge: Application of factorial design optimization

Raquel O. Cristóvão,
Cristiana Gonçalves,
Cidália M. Botelho,
Ramiro J.E. Martins,
J.M. Loureiro,
Rui A.R. Boaventura

Affiliations

Raquel O. Cristóvão: Laboratory of Separation and Reaction Engineering (LSRE), Associate Laboratory LSRE/LCM, Departamento de Engenharia Química, Faculdade de Engenharia, Universidade do Porto, Rua do Dr. Roberto Frias, 4200-465 Porto, Portugal
Cristiana Gonçalves: Laboratory of Separation and Reaction Engineering (LSRE), Associate Laboratory LSRE/LCM, Departamento de Engenharia Química, Faculdade de Engenharia, Universidade do Porto, Rua do Dr. Roberto Frias, 4200-465 Porto, Portugal
Cidália M. Botelho: Laboratory of Separation and Reaction Engineering (LSRE), Associate Laboratory LSRE/LCM, Departamento de Engenharia Química, Faculdade de Engenharia, Universidade do Porto, Rua do Dr. Roberto Frias, 4200-465 Porto, Portugal
Ramiro J.E. Martins: Laboratory of Separation and Reaction Engineering (LSRE), Associate Laboratory LSRE/LCM, Departamento de Engenharia Química, Faculdade de Engenharia, Universidade do Porto, Rua do Dr. Roberto Frias, 4200-465 Porto, Portugal
J.M. Loureiro: Laboratory of Separation and Reaction Engineering (LSRE), Associate Laboratory LSRE/LCM, Departamento de Engenharia Química, Faculdade de Engenharia, Universidade do Porto, Rua do Dr. Roberto Frias, 4200-465 Porto, Portugal
Rui A.R. Boaventura: Laboratory of Separation and Reaction Engineering (LSRE), Associate Laboratory LSRE/LCM, Departamento de Engenharia Química, Faculdade de Engenharia, Universidade do Porto, Rua do Dr. Roberto Frias, 4200-465 Porto, Portugal

DOI: https://doi.org/10.1016/j.wri.2015.03.001
Journal volume & issue: Vol. 10, no. C
pp. 29 – 38

Abstract

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The optimization of hydraulic retention time (HRT) and initial organic matter concentration for dissolved organic carbon (DOC) abatement of wastewater from a fish canning industry of northern Portugal by activated sludge was investigated using response surface methodology (RSM). The two parameters were chosen since it was found that the treatment efficiency is mainly influenced by them. The experimental data on DOC removal were fitted into a quadratic polynomial model using factorial design and RSM. The optimum process conditions were determined by analyzing the response surface of a three-dimensional plot and by solving the regression model equation. The obtained results showed a HRT of 6.4 h and an initial DOC of 406.2 mg/L as the best treatment conditions. Under these conditions, the maximum predicted DOC removal was 88.0%, confirming the feasibility and the reliability of fish canning wastewater treatment by activated sludge for organic content removal.

Published in Water Resources and Industry

ISSN: 2212-3717 (Online)
Publisher: Elsevier
Country of publisher: Netherlands
LCC subjects: Social Sciences: Industries. Land use. Labor: Management. Industrial management
Website: http://www.journals.elsevier.com/water-resources-and-industry/

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