Primary treatment optimization of a fish canning wastewater from a Portuguese plant

• Type: Article in International Scientific Journal
• Date: 2014

Authors

Raquel O. Cristóvão (Author) FEUP; Cidália M. Botelho (Author) FEUP; Ramiro J. E. Martins (Author) Other; José M. Loureiro (Author) FEUP; Rui A. R. Boaventura (Author) FEUP

Journal

Title: Water Resources and Industry

Vol. 6

Pages: 51-63

ISSN: 2212-3717

Publisher: Elsevier

Indexing

ISI Web of Science

Scopus - 25 Citations

INSPEC

Current Contents

COMPENDEX

Scientific classification

FOS: Engineering and technology > Chemical engineering

CORDIS: Technological sciences > Engineering > Chemical engineering

Associated Projects

LA 20 - PROJECTO ESTRATÉGICO - LA 20 - 2013-2014

ValorPeixe - Valorização de Subprodutos e Águas Residuais da Indústria de Conservas de Peixe

Other information

Authenticus ID: P-009-V9P

DOI: 10.1016/j.wri.2014.07.002

Abstract (EN): A sequence with three stages was optimized as a primary treatment for wastewaters from a fish canning industry of northern Portugal. Sedimentation tests were assessed at different times. The removal of a high fraction (75%) of oil and grease (O&G) and of some (48%) total suspended solids (TSS) occurred after a settling time of 1.5h. Coagulant dosage and pH value were optimized in the coagulation/flocculation treatment using several organic and inorganic coagulants. Best removal efficiencies (99.2% O&G, 85.8% TSS and 25.2% dissolved organic carbon (DOC)) were reached using 400mg/L of FeCl3 at raw pH wastewater. DAF was also tested, optimizing chamber pressure and recycle ratio. Removals of 94% for O&G and 43% for TSS were achieved. The coupling of the latter two processes was also investigated, but no improvement of the previous results was observed. The best approach proved to be a decantation process followed by coagulation/flocculation treatment. © 2014 The Authors.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 13