CONTROLLED FILTERED WATER PRESSURE MEMBRANE FILTRATION APPARATUS AND MEMBRANE-CLEANING METHOD THEREFOR

摘要

The present invention relates to a controlled filtered water pressure membrane filtration apparatus and to a membrane-cleaning method therefor. The membrane filtration apparatus that branches supplied water and filters the water using a separation membrane includes: a plurality of filtering supply units; a plurality of membrane filtration units that filter the supplied water; a plurality of filtering discharge units that discharge filtered water; a backwash cleaning input unit that reverse-cleans some of the filtered water through backflow; a backwash discharge unit that discharges backwashed treated water to the outside; and a pressure control unit that controls the pressure of the backwashed filtered water. According to the present invention, some of the filtered water filtered through a membrane filtration process is used as the backwashed water through the backflow, and the pressure of the backwashed filtered water is controlled such that a tank for storing the treated water is not necessary in the membrane filtration apparatus. Accordingly, the efficiency of space usage can be increased, and the pressure of the backwashed filtered water is controlled such that backwash efficiency can be improved.