Utilize este identificador para referenciar este registo: http://hdl.handle.net/10198/10806
Título: Primary treatment optimization of a fish canning wastewater from a Portuguese plant
Autor: Cristovão, Raquel
Botelho, Cidália
Martins, Ramiro
Loureiro, José
Boaventura, Rui
Palavras-chave: Coagulation-flocculation
Fish canning industry
Flotation
Optimization
Wastewater treatment
Data: 2014
Citação: Cristovão, Raquel; Botelho, Cidália; Martins, Ramiro; Loureiro, José; Boaventura, Rui (2014) - Primary treatment optimization of a fish canning wastewater from a Portuguese plant. Water Resources and Industry. ISSN 2212 3717. 6, p.51-63
Resumo: 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.
Peer review: yes
URI: http://hdl.handle.net/10198/10806
DOI: 10.1016/j.wri.2014.07.002
ISSN: 22123717
Aparece nas colecções:DTQB - Artigos em Revistas Indexados ao ISI/Scopus

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