Assessing the influence of oil and grease and salt content on fish canning wastewater biodegradation through respirometric tests

• Type: Article in International Scientific Journal
• Date: 2016

Authors

Raquel O. Cristóvão (Author) FEUP; Pinto, VMS (Author) Other; Martins, RJE (Author) Other; Loureiro, JM (Author) Other; Boaventura, RAR (Author) Other

Journal

The Journal is awaiting validation by the Administrative Services.

Title: JOURNAL OF CLEANER PRODUCTION

Vol. 127

Pages: 343-351

ISSN: 0959-6526

Indexing

ISI Web of Knowledge - 9 Citations

Other information

Authenticus ID: P-00N-DK5

DOI: 10.1016/j.jclepro.2016.04.057

Abstract (EN): Fish canning industry wastewaters have high organic matter, oil and grease and salt (NaC1) content, which make difficult a proper treatment before discharge. In this work, their treatment was evaluated via activated sludge aerobic biological process through respirometric tests. Inhibition was found to be significant for NaC1 concentrations higher than 17.5 g/L. On the other hand, the oil and grease content affects the wastewater biodegradability in the same way that the organic matter content expressed as chemical oxygen demand: the lower oil and grease and organic matter concentrations, the lower the percentage of wastewater biodegradability. As a final conclusion, the aerobic biological treatment process by activated sludge proved to be appropriate to treat fish canning industrial wastewaters, leading to high organic matter degradation rates (average value of 4900 mg(02)/g(COD).d). Additionally, the experimental results achieved with the respirometric tests may be useful for the design of activated sludge plants to treat this type of wastewaters.

Language: English

Type (Professor's evaluation): Scientific

No. of pages: 9