Effluents from Fish Farming Ponds: A View from the Perspective of Its Main Components

Anderson Coldebella, André Luis Gentelini, Pitágoras Augusto Piana, Priscila Ferri Coldebella, Wilson Rogério Boscolo and Aldi Feiden
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Anderson Coldebella: Fisheries Engineering Department, State University of West Paraná, 85903-000 Toledo, Paraná, Brazil
André Luis Gentelini: Fisheries Engineering Department, State University of West Paraná, 85903-000 Toledo, Paraná, Brazil
Pitágoras Augusto Piana: Fisheries Engineering Department, State University of West Paraná, 85903-000 Toledo, Paraná, Brazil
Priscila Ferri Coldebella: Environment Integrated Laboratories, Dinâmica das Cataratas University Center, 85868-030 Foz do Iguaçu, Paraná, Brazil
Wilson Rogério Boscolo: Fisheries Engineering Department, State University of West Paraná, 85903-000 Toledo, Paraná, Brazil
Aldi Feiden: Fisheries Engineering Department, State University of West Paraná, 85903-000 Toledo, Paraná, Brazil

Sustainability, 2017, vol. 10, issue 1, 1-16

Abstract: Among the animal protein production activities, world aquaculture has the highest growth rate, and is mainly practiced in ground-excavated ponds. However, with great productivity comes the concern about the increasing generation of effluents, mainly at the moment of fish removal, when high loads of organic matter and nutrients are released into the environment. Thus, this study evaluated the quality of effluents through the principal component analysis (PCA) in samples from nurseries of different sizes in four sampling scenarios. Analysis was performed during the process of fish removal in Nile Tilapia intensive fish farming sites at various properties in the Western region of Paraná State in Brazil. Twenty physical and chemical parameters were analyzed in each effluent sample using standard methods of effluent analysis. The results indicated that the concentrations of Suspended Solids (SS), Total Solids (TS), Chemical Oxygen Demand (COD), and Total Phosphorus (TP) increased significantly at the end of the fish removal process, which caused a progressive deterioration in the effluent released into the environment. Hence, regulating water management during cultivation, as well as mitigating the effects of effluent generated in fish removal, is indispensable to maintain the legality, profitability, and sustainability of this sector.

Keywords: aquaculture; environmental sustainability; Nile Tilapia; PCA (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2017
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