Monitoramento da qualidade da água em sistema aquaponico com associação entre Oreochromis niloticus e plantas de Eruca vesicaria e Lactuca sativa

Abstract

The growth of the world population and the increase in the demand for food and water, implies the need for greater food production, and a greater investment in research for more productive and economical systems. The Aquaponics System allows the reuse of nutrients present in the effluent caused by psiculture that would be discarded for the growth of vegetables, providing the reuse of water in the cultivation of fish. The objective of this work was to evaluate an Aquaponics System, through the growth of Tilapias Oreochromis niloticus, and the water quality and removal of nutrients from the fish effluent by the curly lettuce vegetable Lactuca sativa, and by the arugula Eruca vesicaria. Fish performance and impacts on water quality were evaluated. The study was conducted in a greenhouse where a tank for raising fish and a tank for the seedling bed were installed, within a period of fortyseven days. Analyzes were carried out in the inlet water of the system, fish tank and seedling bed, water parameters were verified, total dissolved phosphorus, nitrate and turbidity, pH and total dissolved solids, obtained in the raw water that started the system and in the points of monitoring the output of the fish pond and the seedling bed. The results show that there was a difference in the evaluations of the fish effluent through lettuce and arugula. However, complementary studies must be carried out to evaluate the ideal density of plants, to identify the balance in the consumption of nutrients and greater efficiency of the treatment.