INTERNAL PRESSURIZATION FILTERING METHOD AND ITS DEVICE

摘要

PROBLEM TO BE SOLVED: To provide a filtering method capable of improving filtering ability while maintaining the reliability of filtering and reducing the burdens of the maintenance work of a device, and its device. SOLUTION: The method for filtering activated sludge water Ws by using a cylindrical separation film body 31 installed inside a treating water tank 2 is disclosed. While the activated sludge water Ws is pressurized and circulated inside the cylindrical separation film body 31, treating water Wf is made to flow out from the inside of a cylindrical film cartridge 30 to the outside by the positive pressure P1of the activated sludge water Ws and filtering is executed. COPYRIGHT: (C)2005,JPO&NCIPI