Title:
水処理方法及び装置
Document Type and Number:
Japanese Patent JP6811162
Kind Code:
B2
Abstract:
This method for water treatment comprises: a recovery step for recovering washing water that has been used for washing a device and that contains flushed-out substances; a membrane filtration step for cleaning the washing water recovered in the recovery step by filtering out and removing the flushed-out substances using a porous membrane; a reuse step for reusing the washing water cleaned in the membrane filtration step; and a regeneration step for washing the porous membrane using a chemical agent when the permeate flow rate of the porous membrane, which has been used to remove the flushed-out substances in the membrane filtration step, becomes equal to or lower than a set value, wherein the porous membrane is a filter obtained by stretching a polytetrafluoroethylene, and the chemical agent is caustic soda.
Inventors:
Takashi Tsuda
Daisuke Omori
Akihiro Tanaka
Masanori Toto
Yu Kawakami
Sho Mitarai
Daisuke Omori
Akihiro Tanaka
Masanori Toto
Yu Kawakami
Sho Mitarai
Application Number:
JP2017222547A
Publication Date:
January 13, 2021
Filing Date:
November 20, 2017
Export Citation:
Assignee:
ihi Hauling Machine Co., Ltd.
Kyowa Kiden Kogyo Co., Ltd.
Kyowa Kiden Kogyo Co., Ltd.
International Classes:
C02F1/44; B01D65/02; B01D65/06; B01D71/36; B65G45/22
Domestic Patent References:
| JP2004267892A | ||||
| JP2011115712A | ||||
| JP2006043655A | ||||
| JP2009233569A | ||||
| JP10137542A |
Attorney, Agent or Firm:
Yamada Patent Office