AN AQUAPONIC SYSTEM FOR FISH POND WATER TREATMENT AND PRODUCTION FISH MEAT AND FORAGE CROP

Abstract

The Aquaponic is an integrated system consists of Aquaculture and Hydroponic to produce fish meet and organic crops at the same system it’s a new system of cultivation for fish production and getting forage crops without any chemicals or heavy elements with rationalization the water consumption in this system where fish and plants grow in a mutually symbiotic relationship. Aquaculture is one of the methods that are used to produce high density of fish. Hydroponic unit have two important functions first is allow the water to flow through the plant roots to supply the nutrients necessary either second function: is to provide a mechanical support to plant growth and it is considered as one of a new engineering techniques (Phytoremediation) which using green plants to remove pollutants from the water. The experiment was started at 2013 located in Giza Governorate (Agricultural Engineering Research Institute) by setup and constructed the system and test it to study the effect of the amount of seeds with the duration of the water inside the trays and aeration on the barley yield, properties and the percentage of reduction pollutant. The treatments under study were: the quantity of seeds (1.5 and 2.5 kg/m2), the water duration inside the trays (3 and 5 days), and with (aeration or without aeration). The obtained results can be summarized as follows: (A) Pollutant reduction %: 1. COD concentration There was a difference in effluent COD concentration which come from the hydroponics system during the growth period of barley, as well as different depending on seed quantity and during the water duration inside the trays, where it was the highest percentage reduction in COD in the treatment of 2.5kg/m2 and time duration for 5 days with aeration was ranged from 24.34 - 49.61%