JPS5727191A - Method for treating water containing fluoride ion - Google Patents
Method for treating water containing fluoride ionInfo
- Publication number
- JPS5727191A JPS5727191A JP10241680A JP10241680A JPS5727191A JP S5727191 A JPS5727191 A JP S5727191A JP 10241680 A JP10241680 A JP 10241680A JP 10241680 A JP10241680 A JP 10241680A JP S5727191 A JPS5727191 A JP S5727191A
- Authority
- JP
- Japan
- Prior art keywords
- liquid
- sediments
- reaction tank
- adjusted
- under
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title abstract 7
- 238000000034 method Methods 0.000 title abstract 6
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 title abstract 2
- 239000007788 liquid Substances 0.000 abstract 8
- 239000013049 sediment Substances 0.000 abstract 6
- 238000006243 chemical reaction Methods 0.000 abstract 5
- JLVVSXFLKOJNIY-UHFFFAOYSA-N Magnesium ion Chemical compound [Mg+2] JLVVSXFLKOJNIY-UHFFFAOYSA-N 0.000 abstract 2
- 229910001425 magnesium ion Inorganic materials 0.000 abstract 2
- 238000001556 precipitation Methods 0.000 abstract 2
- 239000007787 solid Substances 0.000 abstract 2
- 239000006228 supernatant Substances 0.000 abstract 2
- BHPQYMZQTOCNFJ-UHFFFAOYSA-N Calcium cation Chemical compound [Ca+2] BHPQYMZQTOCNFJ-UHFFFAOYSA-N 0.000 abstract 1
- 229910052782 aluminium Inorganic materials 0.000 abstract 1
- 239000004411 aluminium Substances 0.000 abstract 1
- -1 aluminium ions Chemical class 0.000 abstract 1
- 229910001424 calcium ion Inorganic materials 0.000 abstract 1
- 238000007599 discharging Methods 0.000 abstract 1
- 238000006386 neutralization reaction Methods 0.000 abstract 1
- 239000010802 sludge Substances 0.000 abstract 1
Landscapes
- Removal Of Specific Substances (AREA)
Abstract
PURPOSE: To effectively and highly treat water containing a fluoride ion, by producing sediments under the presence of a magnesium ion and by separating the sediments.
CONSTITUTION: At the first process, a crude water is introdiced to the first reaction tank 1 from a crude water pipe 5, and pH of the crude water is adjusted to 5W8.5 under a condition where calcium ions and/or aluminium ions exist. When pH of the crude water is adjusted, sediments are prodiced. The reacted liquid in the first reaction tank 1 is separated into a solid and a liquid in a precipitation tank 2. The sediment thus obtained is discharged to the outside of the process line through a sludge discharging pipe 8, and the supernatant liquid is introduced into the second reaction tank 3. At the second process, pH of the liquid introdiced from the first process is adjusted to ≥9.5 under the presence of magnesium ions and sediments are produced. The reacted liquid in the second reaction tank 2 is separated into a solid and a liquid in a precipitation tank 4. The supernatant liquid is discharged to the outside of the system through a treat water pipe 11 and a neutralization treatment is performed on the liquid if necessary. The sediments are returned to the first reaction tank 1 through a returning pipe 12 in the third process.
COPYRIGHT: (C)1982,JPO&Japio
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10241680A JPS5813230B2 (en) | 1980-07-28 | 1980-07-28 | Treatment method for water containing fluoride ions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10241680A JPS5813230B2 (en) | 1980-07-28 | 1980-07-28 | Treatment method for water containing fluoride ions |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5727191A true JPS5727191A (en) | 1982-02-13 |
| JPS5813230B2 JPS5813230B2 (en) | 1983-03-12 |
Family
ID=14326835
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10241680A Expired JPS5813230B2 (en) | 1980-07-28 | 1980-07-28 | Treatment method for water containing fluoride ions |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5813230B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6210589B1 (en) * | 1999-06-07 | 2001-04-03 | Industrial Technology Resarch Institute | Process for removing fluoride from wastewater |
| JP2001239273A (en) * | 2000-03-01 | 2001-09-04 | Kurita Water Ind Ltd | Method for treating boron and fluorine-containing water |
| JP2003275772A (en) * | 2002-03-26 | 2003-09-30 | Kurita Water Ind Ltd | Method for treating fluorine-containing water and apparatus for treating fluorine-containing water |
| JP2016087562A (en) * | 2014-11-06 | 2016-05-23 | 日鉄住金環境株式会社 | Treatment method for fluorine-containing wastewater |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5417927B2 (en) * | 2009-03-24 | 2014-02-19 | 電源開発株式会社 | Coal gasification wastewater treatment method |
-
1980
- 1980-07-28 JP JP10241680A patent/JPS5813230B2/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6210589B1 (en) * | 1999-06-07 | 2001-04-03 | Industrial Technology Resarch Institute | Process for removing fluoride from wastewater |
| JP2001239273A (en) * | 2000-03-01 | 2001-09-04 | Kurita Water Ind Ltd | Method for treating boron and fluorine-containing water |
| JP4543481B2 (en) * | 2000-03-01 | 2010-09-15 | 栗田工業株式会社 | Method for treating water containing boron and fluorine |
| JP2003275772A (en) * | 2002-03-26 | 2003-09-30 | Kurita Water Ind Ltd | Method for treating fluorine-containing water and apparatus for treating fluorine-containing water |
| JP2016087562A (en) * | 2014-11-06 | 2016-05-23 | 日鉄住金環境株式会社 | Treatment method for fluorine-containing wastewater |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5813230B2 (en) | 1983-03-12 |
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