The design of turbo jet surface aerator to enhance dissolved oxygen level in shrimp pond

Abstract

AbstractThe dissolved oxygen (DO) is crucial water quality parameters for shrimp farming. The farmers need aerator to break water into fine drops or creating bubbles that can enhance dissolved oxygen level in the pond. Turbo jet surface aerator is the one type of aerator. This aerator works by rotating propeller which is connected by a hollow shaft to the motor. The angular adjustment that is used from the engine holder is 20°. Therefore, the propeller can rotate in half submerged position which is 4.5 cm immersion depth. This turbo jet surface aerator is designed using 0.5 HP electric motor, 7 blades, and 2 floats. The measurement result shows the turbo jet surface aerator can be used to enhance DO level up to 2.8 mg/L with the average of DO level of 6.8 mg/L. Turbo jet surface aerator can be operated properly for 168 hours nonstop with the electric motor temperature of 69°C.