Title:
METHOD AND DEVICE FOR TREATING WASTEWATER CONTAINING FLUORIDE IONS
Document Type and Number:
WIPO Patent Application WO/2016/006526
Kind Code:
A1
Abstract:
In the present invention, a device for treating wastewater containing fluoride ions is provided with a reverse osmosis module (14) with which wastewater containing fluoride ions is passed through a reverse osmosis membrane under conditions of a pH of 4 to 6 and separated into permeating water and concentrated water, wherein the reverse osmosis membrane has a ζ potential at a pH of 4 to 6 of less than -1 mV and a corrected permeating water volume of less than 0.94 m/day/MPa.
Inventors:
SUZUKI YUDAI (JP)
KEMMOCHI CHIKA (JP)
KEMMOCHI CHIKA (JP)
Application Number:
PCT/JP2015/069122
Publication Date:
January 14, 2016
Filing Date:
July 02, 2015
Export Citation:
Assignee:
ORGANO CORP (JP)
International Classes:
C02F1/44; B01D61/02; B01D69/02
Foreign References:
| JPH1080693A | 1998-03-31 | |||
| JP2012210568A | 2012-11-01 | |||
| JP2004243198A | 2004-09-02 | |||
| JP2002001069A | 2002-01-08 | |||
| JP2009172462A | 2009-08-06 |
Attorney, Agent or Firm:
YKI Patent Attorneys (JP)
Patent business corporation YKI international patent firm (JP)
Patent business corporation YKI international patent firm (JP)
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