에어리프트 펌프를 이용한 정밀여과막 세척 = Microfiltration Membrane Cleaning Using Airlift Pump

다국어 초록 (Multilingual Abstract)

The MBR method, also known as the membrane separation active sludge method, does not require a precipitation tank and has many advantages such as stable discharging water. The biggest disadvantages of the MBR method, which has many advantages, are maintenance problems due to reduced flux due to fouling, decreased processing efficiency, and membrane replacement. In this study, in order to reduce membrane pollution, membrane cleaning was performed using the washing principle of the airlift pump, and shear force according to the amount of air was analyzed using the Ansys Fluent computational fluid dynamics program. As a result of the analysis, the film recovery rate was 93.8% to 97.3% and the average was 95.8%, and the CFD analysis showed the highest shear force at about 5.425×10-2Pa at 10m3/m2/hr. It is believed that the MBR device using Airlift in this study can maximize the flux recovery rate by reducing the problem of membrane contamination.