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Sustainability 2018, 10(1), 3; doi:10.3390/su10010003

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

1
Fisheries Engineering Department, State University of West Paraná, 85903-000 Toledo, Paraná, Brazil
2
Aquaculture Engineering Department, Federal Institute of Paraná, 85860-000 Foz do Iguaçu, Paraná, Brazil
3
Environment Integrated Laboratories, Dinâmica das Cataratas University Center, 85868-030 Foz do Iguaçu, Paraná, Brazil
*
Author to whom correspondence should be addressed.
Received: 20 October 2017 / Revised: 11 December 2017 / Accepted: 15 December 2017 / Published: 21 December 2017
(This article belongs to the Special Issue Eutrophication and Sustainable Management of Water)
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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. View Full-Text
Keywords: aquaculture; environmental sustainability; Nile Tilapia; PCA aquaculture; environmental sustainability; Nile Tilapia; PCA
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MDPI and ACS Style

Coldebella, A.; Gentelini, A.L.; Piana, P.A.; Coldebella, P.F.; Boscolo, W.R.; Feiden, A. Effluents from Fish Farming Ponds: A View from the Perspective of Its Main Components. Sustainability 2018, 10, 3.

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