SYSTEM AND METHOD FOR FILTERING USING POSITIVE PRESSURE TYPE MODULE

摘要

PURPOSE: A filtering system and a filtering method using a pressurizing module are provided to overcome eccentric contamination problems by bidrectionally feeding fee water in a fluid treating process. CONSTITUTION: A filtering system includes a feed water tank(120), a pressurizing module(110), and a pump(P1). The pressurizing module includes an upper opening(117) and a lower opening(115). The pump supplies feed water from the feed water tank to the pressurizing module. The pump and the upper opening are connected through a first valve(V1). The pump and the lower opening are connected through a second valve(V2). The valves are respectively controlled. The filtering system further includes a third valve(V3) and a fourth valve(V4). The third valve controls the flow of fluid from the upper opening to the feed water tank. The fourth valve controls the flow of fluid from the lower opening to the feed water tank.