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|Título:||Primary treatment optimization of a fish canning wastewater from a Portuguese plant|
Loureiro, José M.
Fish canning industry
|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.|
|Aparece nas colecções:||CIMO - Artigos em Revistas Indexados à WoS/Scopus|
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|WRI 6 (2014) 51-63.pdf||812,37 kB||Adobe PDF||Ver/Abrir|
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