The Society of Convergence Knowledge TransactionsISSN:2287-8920(Print)융복합지식학회

Recently, the development of oil and gas, including unconventional energy, has been increasing in cold and harsh areas, and it is difficult to secure produced water in these areas, and a method of reuse is needed. In the reuse of the produced water, salts, acidity, ionic substances, etc., which affect the environmental pollution and the performance of machinery are removed below the standard value. In this paper, a produced water treatment system with a processing capacity of 180 BPD (bbl / day) was fabricated for the performance test to effectively remove fine oil contained in the produced water. The device is equipped with a saturator, an eductor, a circulation pump, a gas tank, etc. for generating micro-bubbles. Using these experimental devices, the microbubble formation according to the operating conditions and the oil removal characteristics according to the oil concentration of the produced water were evaluated experimentally. In the case of the proposed system through the micro-bubble generation test, it was possible to adjust the micro-bubble generation characteristics according to the pressure, the amount of gas, and the amount of circulating water. In addition, it can be seen that it affects the oil removal efficiency according to the formation form of the fine bubbles. In particular, the amount of nitrogen gas and the amount of circulating water had the greatest influence on the generation of micro-bubbles, and the oil removal performance could be evaluated by 97.1% depending on the cell composition.