Construção de laboratório de aquicultura utilizando sistema de recirculação

Abstract

The practice of reusing water in confined systems have attracted interest, with emphasis on the effective use of mechanical, biological filters, pumping and aeration system. The goal in the first stage was to develop laboratory recirculation model, adapted to the cultivation of tilapia (Oreochromis spp.) In aquaponics, farming and auxiliary reproduction Carapeba (Eugerres brasiliensis) system. Two precast circular tanks with a capacity PVC canvas 2.4m³ with central drainage system were used. These were placed on a wooden platform only 30 cm in height so that the flow was directed to tanks of water containing 0,25m³ mechanical and biological filters consecutively. Every incoming water goes through chemical treatment (Chlorine and Sodium thiosulphate) and physical (filters 25 μ m, 10 μ m and 1 μ m). The return of water to the marine system is done through the filter model with autonomy Canister 1500 l / h which returned to the supply piping. In aquaponics system after passing through the physical and biological filter, the return is by common 1/2 HP pump. The laboratory has an aeration system through a radial blower 1HP, in which the main pipe has 50 mm and 20 mm secondary, individualized for each sector. The structure is ready for operation has a range of 250% to 300% day of renewal. In the second stage of expansion and transfer from the laboratory to the Center of Agrarian Sciences UFAL was performed, which went from 30m² to 166m², expanding the area of maintenance of breeding crops for auxiliary individualized room, a live performance and larval rearing. The laboratory is in full Operation. With the sandblasting system with two radial blowers 1hp in relay system, ¼ biological filter related to maintenance tank volume.