Title:
廃水のクロマトグラフィー分離によるフッ化物及びアンモニアの選択的除去
Document Type and Number:
Japanese Patent JP2007516835
Kind Code:
A
Abstract:
A process for fluoride removal from wastewater streams produced during industrial operation for further industrial use or to comply with environmental regulations. The process segregates the removal of fluoride and fluorosilicate ions, from the totality of ions in the waste water stream, thus improving treatment efficiency and reducing costs. Ion-exchange chromatography is used to remove the fluoride and fluorosilicate ions by passing the wastewater stream through one or more columns that contain a charged resin which selectively binds cations/anions in the stream. The fluoride ions are washed from the column and then collected for removal or use in other processes.
Inventors:
Jung Barwara, Jutzer
Clarique, Gelide Albert
Clarique, Gelide Albert
Application Number:
JP2006547358A
Publication Date:
June 28, 2007
Filing Date:
December 22, 2004
Export Citation:
Assignee:
THE BOC GROUP INCORPORATED
International Classes:
C02F1/42; B01D15/36; B01J39/04; B01J49/00; C02F1/58
Domestic Patent References:
| JPH0615266A | 1994-01-25 | |||
| JP2003081613A | 2003-03-19 | |||
| JPS57153790A | 1982-09-22 |
Attorney, Agent or Firm:
Kazuo Shamoto
Shinjiro Ono
Yasushi Kobayashi
Akio Chiba
Hiroyuki Tomita
Koji Hirayama
Shinjiro Ono
Yasushi Kobayashi
Akio Chiba
Hiroyuki Tomita
Koji Hirayama