This paper aims to study the performance of using the airlift pump as a pumping and aeration system in the aquacultural systems. Water flow rates, dissolved oxygen and temperature were measured, and standard aeration efficiencies (SAE) were determined in airlift pumps 5.0, 7.5 and 10.0cm in diameter, 0.5, 1.0 and 1.5m in length and submergence of airlifts were 70, 80 and 90% from pipe length to develop performance data that might be useful to aquaculturists. Air was injected through leaky pipes ( 13mm).
The results indicated that, the water flow rate and standard aeration efficiency (SAE) increased with increasing of both length and diameter of airlift pumps and submergence ratio. The water flow rate increased with air injection until it reaches to the peak then it decreased. The standard aeration efficiency (SAE) increased in narrow range with increasing the air flow rate, after this range it decreased with increasing the air flow rate.