公开(公告)号：US20200215491A1

公开(公告)日：2020-07-09

申请号：US16822113

申请日：2020-03-18

Applicant: FUJIFILM CORPORATION

Inventor： Hidetoshi TAKAYAMA ,  Hiroshi YAMASHITA ,  Masumi MIYAJIMA

IPC: B01D63/08 ,  B01D69/06 ,  B01D69/10

Abstract: Provided is a filtration device including: a flow path that meanders; a filtration membrane that separates a supply side and a permeation side of the flow path; a first distribution port that is provided at one end of the supply side of the flow path; a second distribution port that is provided at the other end of the supply side of the flow path; a first discharge port that is provided on the permeation side of the flow path; and a second discharge port that is provided at a position different from that of the first discharge port on the permeation side of the flow path. First liquid feeding for allowing a liquid flowed in from the first distribution port to flow out from the second distribution port, and second liquid feeding for allowing a liquid flowed in from the second distribution port to flow out from the first distribution port are alternately performed. A liquid that has passed through the filtration membrane is discharged from the first discharge port while the first liquid feeding is performed, and a liquid that has passed through the filtration membrane is discharged from the second discharge port while the second liquid feeding is performed.