| In this article, the influence factors on oxygen transfer process of gas-liquid and hydrodynamics have been investigated. The experimental results have been studied by using the method of mathematical model of oxygen transfer theory. A Plexiglas column is used as the reactor (1m-high, 0.15mID) and the data are obtained through a online system. The volumetric oxygen transfer coefficient and oxygen transfer properties are investigated. The effect of aeration rate, surfactant, electrolyte and temperature are investigated. The results indicate (1) the volumetric oxygen transfer coefficient is increased by the aeration rate's increasing (2) the character of water have great influence on the flow pattern and bubble's behavior (3) the volumetric oxygen transfer coefficient is increased by the temperature's increasing. Saturated dissolved oxygen play a decisive role on the oxygen transfer rate. Lower temperature is benefit to oxygen transfer.Referring to the transfer and hydrodynamics theory, a new technology principle of agitating aerator has been introduced. The simulating experiments of clean water oxygenation of the aeration equipment have been done. The power efficiency of the aeration equipment has been tested. The equipment has the unique aeration mode of double-control of agitation and aeration. The simulating experiments of the aeration equipment show that the equipment has characteristics of optimal property, easy control and energy saving. One of the solutions for the deficiency of aeration technology has been found. It offers significant reference for stable treatment effect, lower energy saving and advanced auto-control level.
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