Testing of System Performance for Different Aerator Configuration Using Venturi

Abstract: A venturi tube or pipe part or device allows air bubbles to be inserted into flowing water from air inletholes and so increases dissolved oxygen (DO) levels in water. Therefore, the aim of this paper is to evaluatesystem design and experimental results related to configuration of venturi tube in air vacuum and aerationprocess. Different aerator modules constructed using venturi tubes connected in either single or double in parallel(with single or double outlet pipe line) were evaluated and compared for their air flowrate, vacuum capacity,oxygen transfer coefficients (OTC), standard oxygen transfer rate (SOTR), and standard oxygenation efficiency(SOE) determined by clean water tests. The experimental results indicated that the double parallel design(connected to a single outlet pipe line) generally performed better than the single and double parallel (connectedto a double outlet pipe line) design in terms of transferring oxygen into water.