METHOD FOR CLEANING FILTRATION FILTER

摘要

PURPOSE: A method for washing a filter is provided to improve the washing efficiency of a filter by using telescopic type tubular units or rotating disk plates of a disk filter based on water currents in a back washing process. CONSTITUTION: Water currents are formed with respect to washing water in a back washing direction and wash the filter of a filtering apparatus. While a back washing process is implemented based on the washing water, air is supplied with the washing water. The filtering apparatus includes a case(10), a disk filter(30), and a disk supporting unit. The case includes a raw water inlet(12) and a filtered water outlet(14). The disk filter is installed in the case and is cylindrically formed based on a plurality of disk plates. The disk supporting unit rotatably supports at least one disk plates in the back washing process.