JPS63296890A - Treatment of waste water - Google Patents
Treatment of waste waterInfo
- Publication number
- JPS63296890A JPS63296890A JP13189487A JP13189487A JPS63296890A JP S63296890 A JPS63296890 A JP S63296890A JP 13189487 A JP13189487 A JP 13189487A JP 13189487 A JP13189487 A JP 13189487A JP S63296890 A JPS63296890 A JP S63296890A
- Authority
- JP
- Japan
- Prior art keywords
- fluorine
- added
- waste water
- ferric
- salt
- 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
- 239000002351 wastewater Substances 0.000 title claims abstract description 19
- 229910052731 fluorine Inorganic materials 0.000 claims abstract description 27
- 239000011737 fluorine Substances 0.000 claims abstract description 27
- XHXFXVLFKHQFAL-UHFFFAOYSA-N phosphoryl trichloride Chemical compound ClP(Cl)(Cl)=O XHXFXVLFKHQFAL-UHFFFAOYSA-N 0.000 claims abstract description 25
- 150000003839 salts Chemical class 0.000 claims abstract description 15
- 239000002244 precipitate Substances 0.000 claims abstract description 14
- 238000000034 method Methods 0.000 claims abstract description 10
- 159000000007 calcium salts Chemical class 0.000 claims abstract description 6
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 4
- 239000000047 product Substances 0.000 claims abstract description 3
- 238000004065 wastewater treatment Methods 0.000 claims abstract description 3
- PXGOKWXKJXAPGV-UHFFFAOYSA-N Fluorine Chemical compound FF PXGOKWXKJXAPGV-UHFFFAOYSA-N 0.000 claims 1
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 abstract description 26
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 abstract description 3
- 229910021578 Iron(III) chloride Inorganic materials 0.000 abstract description 3
- 239000001110 calcium chloride Substances 0.000 abstract description 3
- 229910001628 calcium chloride Inorganic materials 0.000 abstract description 3
- 238000006243 chemical reaction Methods 0.000 abstract description 3
- RBTARNINKXHZNM-UHFFFAOYSA-K iron trichloride Chemical compound Cl[Fe](Cl)Cl RBTARNINKXHZNM-UHFFFAOYSA-K 0.000 abstract description 3
- 239000003513 alkali Substances 0.000 abstract description 2
- RUTXIHLAWFEWGM-UHFFFAOYSA-H iron(3+) sulfate Chemical compound [Fe+3].[Fe+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O RUTXIHLAWFEWGM-UHFFFAOYSA-H 0.000 abstract description 2
- 229910000360 iron(III) sulfate Inorganic materials 0.000 abstract description 2
- RCJVRSBWZCNNQT-UHFFFAOYSA-N dichloridooxygen Chemical compound ClOCl RCJVRSBWZCNNQT-UHFFFAOYSA-N 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- WUKWITHWXAAZEY-UHFFFAOYSA-L calcium difluoride Chemical compound [F-].[F-].[Ca+2] WUKWITHWXAAZEY-UHFFFAOYSA-L 0.000 description 4
- 229910001634 calcium fluoride Inorganic materials 0.000 description 4
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- 229960004887 ferric hydroxide Drugs 0.000 description 3
- IEECXTSVVFWGSE-UHFFFAOYSA-M iron(3+);oxygen(2-);hydroxide Chemical compound [OH-].[O-2].[Fe+3] IEECXTSVVFWGSE-UHFFFAOYSA-M 0.000 description 3
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 2
- OSGAYBCDTDRGGQ-UHFFFAOYSA-L calcium sulfate Chemical compound [Ca+2].[O-]S([O-])(=O)=O OSGAYBCDTDRGGQ-UHFFFAOYSA-L 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 238000000975 co-precipitation Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- FLTRNWIFKITPIO-UHFFFAOYSA-N iron;trihydrate Chemical compound O.O.O.[Fe] FLTRNWIFKITPIO-UHFFFAOYSA-N 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 238000001556 precipitation Methods 0.000 description 1
Landscapes
- Removal Of Specific Substances (AREA)
- Separation Of Suspended Particles By Flocculating Agents (AREA)
Abstract
Description
【発明の詳細な説明】
（産業上の利用分野）
本発明は、オキシ塩化リン及びフッ素を含む廃水の処理
方法に関する。DETAILED DESCRIPTION OF THE INVENTION (Industrial Application Field) The present invention relates to a method for treating wastewater containing phosphorus oxychloride and fluorine.
（従来の技術）
廃水中に含まれるフッ素を除去する方法としては、カル
シウム塩を用いるフン化カルシウム沈殿法が一般に行わ
れている。また、フン化カルシウムを沈殿させる際に、
第二鉄塩を添加して水酸化第二鉄の沈殿とフッ化カルシ
ウムを共沈させることも知られている。(Prior Art) As a method for removing fluorine contained in wastewater, a calcium fluoride precipitation method using a calcium salt is generally used. In addition, when precipitating calcium fluoride,
It is also known to add ferric salts to co-precipitate ferric hydroxide and calcium fluoride.
（発明が解決しようとする問題点）
しかしながら、この方法において廃水中にオキシ塩化リ
ンが混入してくると、沈殿物が乳白色となり、処理水の
フッ素濃度が高くなる。(Problems to be Solved by the Invention) However, when phosphorus oxychloride is mixed into the wastewater in this method, the precipitate becomes milky white and the fluorine concentration of the treated water increases.
本発明は、前記の従来技術の欠点を解消し、フッ素含有
廃水中にオキシ塩化リンが混入していても、廃水中のフ
ッ素を効果的に除去することができるフッ素含有廃水の
処理方法を提供することを目的とする。The present invention eliminates the drawbacks of the prior art described above and provides a method for treating fluorine-containing wastewater that can effectively remove fluorine from wastewater even if phosphorus oxychloride is mixed in the fluorine-containing wastewater. The purpose is to
（問題点を解決するための手段）
本発明は、第二鉄塩を生成沈殿物の色が褐色になるまで
添加することによって前記の問題点を解決したものであ
る。(Means for Solving the Problems) The present invention solves the above problems by adding ferric salt until the color of the produced precipitate turns brown.
即ち、本発明は、オキシ塩化リン及びフッ素を含む廃水
にカルシウム塩を添加し、次いで第二鉄塩を添加し、そ
の後アルカリ剤を添加して沈殿物を生成させ、除去する
廃水の処理方法において、第二鉄塩を処理時の生成物の
色が褐色になるまで添加することを特徴とする廃水の処
理方法に関する。That is, the present invention provides a wastewater treatment method in which a calcium salt is added to wastewater containing phosphorus oxychloride and fluorine, then a ferric salt is added, and then an alkaline agent is added to generate and remove a precipitate. , relates to a method for treating wastewater, characterized in that a ferric salt is added until the color of the product during treatment becomes brown.
′詳述すれば、本発明方法では、オキシ塩化リン及びフ
ッ素を含む廃水に、フッ素との反応当量以上のカルシウ
ム塩を添加し、次いで第二鉄塩を生成沈殿の色が褐色に
なるまで添加し、その後、ｐｌ（７〜８になるまでアル
カリ剤を添加して更に沈殿を生成させる。その後、固液
分離すると、処理水のフッ素濃度は低くなる。'Specifically, in the method of the present invention, calcium salt in an amount equal to or more than the reaction equivalent with fluorine is added to wastewater containing phosphorus oxychloride and fluorine, and then ferric salt is added until the color of the formed precipitate turns brown. Then, an alkali agent is added until the pl (pl) becomes 7 to 8 to further generate a precipitate. After that, when solid-liquid separation is performed, the fluorine concentration of the treated water becomes low.
カルシウム塩としては、塩化カルシウム、硫酸カルシウ
ム、炭酸カルシウム等を使用することができる。また、
第二鉄塩としては、塩化第二鉄、硫酸第二鉄等を使用す
ることができる。As the calcium salt, calcium chloride, calcium sulfate, calcium carbonate, etc. can be used. Also,
As the ferric salt, ferric chloride, ferric sulfate, etc. can be used.
前記のように、オキシ塩化リンを含むフッ素含有廃水に
第二鉄塩を添加したときの生成沈殿物の色が白色あるい
は乳白色であると、処理水のフッ素濃度は高くなる。し
かし、更に第二鉄塩の添加量を増加していくと、褐色の
沈殿物が生成し、処理水のフッ素濃度は低下する。この
メカニズムはまだ解明されていないが、褐色の沈殿物は
水酸化第二鉄Ｆｅ （ＯＨ） ３であると思われ、水酸
化第二鉄の生成によりフン化カルシウムの沈殿が共沈し
、フッ素が効率良く除去されるものと考えられる。As described above, when a ferric salt is added to fluorine-containing wastewater containing phosphorus oxychloride, the color of the precipitate produced is white or milky, and the fluorine concentration of the treated water increases. However, when the amount of ferric salt added is further increased, a brown precipitate is generated and the fluorine concentration of the treated water is reduced. Although this mechanism has not yet been elucidated, the brown precipitate is thought to be ferric hydroxide Fe(OH)3, and the production of ferric hydroxide causes co-precipitation of calcium fluoride, resulting in fluoride. is considered to be efficiently removed.
（実施例）
次に、実施例に基づいて本発明を詳述するが、本発明は
これに限定されるものではない。(Example) Next, the present invention will be described in detail based on Examples, but the present invention is not limited thereto.
実施例１
オキシ塩化リン６０ｍｇ／β及びフッ素イオン１１０ｍ
ｇ／ｊ２を含む廃水に反応当量の塩化カルシウムを添加
し、次いで塩化第二鉄を２５ｍｇ／ｎ、５０ｍｇ／Ａ、
１００ｍｇ／ｊ！、１５０ｍｇ／／２添加し、その後水
酸化ナトリウムでｐＨ７〜８に調整し、固液分離した。Example 1 Phosphorous oxychloride 60mg/β and fluorine ion 110m
A reaction equivalent amount of calcium chloride was added to the wastewater containing g/j2, and then ferric chloride was added at 25 mg/n, 50 mg/A,
100mg/j! , 150 mg//2 was added, and then the pH was adjusted to 7 to 8 with sodium hydroxide, and solid-liquid separation was performed.
得られる処理水のフッ素濃度及び沈殿物の色を測定し、
結果を第１図に示す。Measure the fluorine concentration of the resulting treated water and the color of the precipitate,
The results are shown in Figure 1.
実施例２
オキシ塩化リンを１２０ｍｇ／β含む廃水を対象とした
以外は、実施例１と同様に操作し、得られる処理水のフ
ッ素濃度及び沈殿物の色を測定し、結果を第２図に示す
。Example 2 The same procedure as in Example 1 was conducted except that wastewater containing 120 mg/β of phosphorus oxychloride was used, and the fluorine concentration and color of the precipitate in the resulting treated water were measured. The results are shown in Figure 2. show.
第１図及び第２図に示した結果から明らかなとおり、オ
キシ塩化リンの含有量が多くなる程、第二鉄塩の添加量
を増加させなければならないことが判った。As is clear from the results shown in FIGS. 1 and 2, it was found that as the content of phosphorus oxychloride increases, the amount of ferric salt added must be increased.
（発明の効果）
本発明によれば、オキシ塩化リンを含むフッ素含有廃水
から効率良く、簡単な操作で容易にフッ素を除去するこ
とができる。(Effects of the Invention) According to the present invention, fluorine can be efficiently and easily removed from fluorine-containing wastewater containing phosphorus oxychloride with a simple operation.
第１図は、実施例１の処理結果を示す第二鉄塩の添加量
と処理水のフッ素濃度との関係を示すグラフ図、第２図
は、実施例１の処理結果を示す第二鉄塩の添加量と処理
水のフッ素濃度との関係を示すグラフ図である。Figure 1 is a graph showing the relationship between the amount of ferric salt added and the fluorine concentration of the treated water, showing the treatment results of Example 1, and Figure 2 is a graph showing the treatment results of Example 1. FIG. 2 is a graph diagram showing the relationship between the amount of salt added and the fluorine concentration of treated water.
Claims (1)
添加し、次いで第二鉄塩を添加し、その後アルカリ剤を
添加して沈殿物を生成させ、除去する廃水の処理方法に
おいて、第二鉄塩を処理時の生成物の色が褐色になるま
で添加することを特徴とする廃水の処理方法。In a wastewater treatment method in which a calcium salt is added to wastewater containing phosphorus oxychloride and fluorine, then a ferric salt is added, and then an alkaline agent is added to generate and remove a precipitate, the ferric salt is A method for treating wastewater characterized by adding the product during treatment until the color turns brown.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13189487A JPS63296890A (en) | 1987-05-29 | 1987-05-29 | Treatment of waste water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13189487A JPS63296890A (en) | 1987-05-29 | 1987-05-29 | Treatment of waste water |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63296890A true JPS63296890A (en) | 1988-12-02 |
| JPH0333398B2 JPH0333398B2 (en) | 1991-05-16 |
Family
ID=15068639
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13189487A Granted JPS63296890A (en) | 1987-05-29 | 1987-05-29 | Treatment of waste water |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS63296890A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103896380A (en) * | 2014-04-01 | 2014-07-02 | 安庆丰源化工有限公司 | Fine chemical waste water treating agent for efficiently removing ammonia nitrogen |
-
1987
- 1987-05-29 JP JP13189487A patent/JPS63296890A/en active Granted
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103896380A (en) * | 2014-04-01 | 2014-07-02 | 安庆丰源化工有限公司 | Fine chemical waste water treating agent for efficiently removing ammonia nitrogen |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0333398B2 (en) | 1991-05-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| LAPS | Cancellation because of no payment of annual fees |