STUDIES AND RESEARCH CONCERNING THE CONDITIONING OF WATER CHEMICAL PARAMETERS FROM A RECIRCULATING AQUACULTURE SYSTEM BY INTEGRATING AN INNOVATIVE WATER DENITRIFYING TECHNOLOGY

The paper aims to study the main issues regarding the productivity and efficiency of fish breeding and plant cultivation in aquaponic systems.Aquaponics is defined as a combination of aquaculture and hydroponic systems, in which waste water rich in nutrients from aquaculture system is introduced in a hydroponic system.Plants absorb nutrients from waste water thus improving and  purifying water from the aquaculture system, this method providing an ecological and sustainable system.Aquaponics integrates a hydroponic subsystem and an aquaculture subsystem, constituting the optimal practice for obtaining superior yields both quantitatively and qualitatively through the use of effluents from fish as a natural fertilizer for plants, the plants giving the fish filtered and reconditioned water. Aquaponics is a symbiosis of: aquaculture (fish breeding in closed systems) and hydroponics (growing plants in water without using soil). Vegetables, lettuce, special herbs (spinach, chives, basil and watercress) have low to medium nutrient needs and are well adapted to aquaponic systems.Plants absorb nutrients from residual water and thus improve or purify water in the aquaculture system, this method provides an ecological and sustainable system.