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Estabelecimento da Operativa de um Mecanismo de Transposição de Peixes do Tipo Elevador com Caminhão-Tanque

2005; Brazilian Association of Water Resources; Volume: 10; Issue: 4 Linguagem: Inglês

10.21168/rbrh.v10n4.p31-42

2318-0331

Carlos Barreira Martinez, Paulo dos Santos Pompeu,

Water-Energy-Food Nexus Studies

In fish transfer mechanisms it is necessary to provide a variable stream flow that is used to attract the shoals of fishes to enter the system. This procedure requires reducing the volume of water available for power generation at the Hydropower Plant. In this study the possibility is assessed of establishing an operational rule for a fish elevator, in which the number of fish transferred is maximized and water use is minimized. Thus the operation of the fish transfer mechanism using a fish elevator with tanker truck installed at the Santa Clara Hydropower Plant was followed between November 19, 2003 and March 19 2004. Based on the results, two alternatives were proposed: prioritization of transfer cycles during the day, with nighttime operations only when it rains, and operating the mechanism during higher flow periods. Compared to the current type of operation, the alternative proposed might mean an increase of up to 35% in the number of individuals of migratory species transferred, and also a saving, at current values, of up to R$547,000.00, considering current interest rates of 8% and a 30-year life of the enterprise