JPS5895582A - Treatment of fluorine containing waste water - Google Patents
Treatment of fluorine containing waste waterInfo
- Publication number
- JPS5895582A JPS5895582A JP19215181A JP19215181A JPS5895582A JP S5895582 A JPS5895582 A JP S5895582A JP 19215181 A JP19215181 A JP 19215181A JP 19215181 A JP19215181 A JP 19215181A JP S5895582 A JPS5895582 A JP S5895582A
- Authority
- JP
- Japan
- Prior art keywords
- sewage
- tank
- waste water
- chamber
- storage tank
- 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.)
- Pending
Links
- 239000002351 wastewater Substances 0.000 title claims abstract description 14
- 229910052731 fluorine Inorganic materials 0.000 title claims description 22
- 239000011737 fluorine Substances 0.000 title claims description 22
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 title claims description 21
- KLZUFWVZNOTSEM-UHFFFAOYSA-K Aluminium flouride Chemical compound F[Al](F)F KLZUFWVZNOTSEM-UHFFFAOYSA-K 0.000 claims abstract description 12
- 238000000034 method Methods 0.000 claims description 12
- IRPGOXJVTQTAAN-UHFFFAOYSA-N 2,2,3,3,3-pentafluoropropanal Chemical compound FC(F)(F)C(F)(F)C=O IRPGOXJVTQTAAN-UHFFFAOYSA-N 0.000 claims description 6
- 229910052782 aluminium Inorganic materials 0.000 claims description 6
- 239000002244 precipitate Substances 0.000 claims description 4
- -1 aluminum ions Chemical class 0.000 claims description 3
- 239000010865 sewage Substances 0.000 abstract description 16
- 239000000126 substance Substances 0.000 abstract description 7
- 239000010802 sludge Substances 0.000 abstract description 6
- 239000008394 flocculating agent Substances 0.000 abstract description 5
- 239000003513 alkali Substances 0.000 abstract description 3
- 229920006318 anionic polymer Polymers 0.000 abstract description 3
- 150000002500 ions Chemical class 0.000 abstract description 3
- 239000006228 supernatant Substances 0.000 abstract description 3
- 239000007788 liquid Substances 0.000 abstract description 2
- 229940037003 alum Drugs 0.000 abstract 1
- 229910000329 aluminium sulfate Inorganic materials 0.000 abstract 1
- DIZPMCHEQGEION-UHFFFAOYSA-H aluminium sulfate (anhydrous) Chemical compound [Al+3].[Al+3].[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O.[O-]S([O-])(=O)=O DIZPMCHEQGEION-UHFFFAOYSA-H 0.000 abstract 1
- 235000011128 aluminium sulphate Nutrition 0.000 abstract 1
- 230000001276 controlling effect Effects 0.000 abstract 1
- 230000001105 regulatory effect Effects 0.000 abstract 1
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 8
- 239000003795 chemical substances by application Substances 0.000 description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 210000003608 fece Anatomy 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 description 2
- 239000000701 coagulant Substances 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 238000004062 sedimentation Methods 0.000 description 2
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 description 1
- XZMCDFZZKTWFGF-UHFFFAOYSA-N Cyanamide Chemical compound NC#N XZMCDFZZKTWFGF-UHFFFAOYSA-N 0.000 description 1
- KRHYYFGTRYWZRS-UHFFFAOYSA-M Fluoride anion Chemical compound [F-] KRHYYFGTRYWZRS-UHFFFAOYSA-M 0.000 description 1
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 239000011575 calcium Substances 0.000 description 1
- 229920006317 cationic polymer Polymers 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 239000013256 coordination polymer Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000855 fermentation Methods 0.000 description 1
- 230000004151 fermentation Effects 0.000 description 1
- 238000005189 flocculation Methods 0.000 description 1
- 230000016615 flocculation Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000002269 spontaneous effect Effects 0.000 description 1
- 239000013589 supplement Substances 0.000 description 1
Landscapes
- Removal Of Specific Substances (AREA)
Abstract
Description
【発明の詳細な説明】
本発明は、フッ素含有排水からフッ素を極めて低濃度に
まで除去し得るようにした処理方法に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a treatment method capable of removing fluorine from fluorine-containing wastewater to an extremely low concentration.
従来の溶存フッ素除去法は、不ツ化カルシウム凝集沈殿
法が主流であるが、処理限界濃度がｌθ〜２０酵であり
、５−以下に安定して処理を行うことは困難とされてい
る。The mainstream of conventional methods for removing dissolved fluorine is the unfluoridated calcium flocculation precipitation method, but the treatment limit concentration is lθ~20, and it is difficult to perform the treatment stably at lθ~20.
神奈川県中水域における新設特定施設の放流水フッ素規
制値は０８−であり、一方ごみ焼却場湿式塩化木葉除去
設備より排水さ譜る汚水中には、数１０〜１．００１ｆ
強のフッ素が含有されている。The fluorine regulation value for discharged water from newly constructed specified facilities in the middle water area of Kanagawa Prefecture is 0.8 - fluorine, while the sewage discharged from wet chlorinated leaf removal equipment at garbage incinerators contains several tens to 1.001 f.
Contains strong fluorine.
本発明は、上記に鑑み、フッ素含有排水のフッ素含有量
を上記放流水フッ素規制値に通番すムイオンを添加する
とともにｐＨを６〜７に調節してフッ化アルミニウムを
形成させ沈殿除去することを特長とするフッ素含有排水
の処理方法を提供する。In view of the above, the present invention involves adding ions that adjust the fluorine content of fluorine-containing wastewater to the above-mentioned effluent water fluorine regulation value, and adjusting the pH to 6 to 7 to form aluminum fluoride and remove the precipitate. The present invention provides a method for treating fluorine-containing wastewater.
本発明方法は、アルミニウムイオン添加によりフッ素を
フッ化アルミニウム沈殿として除去するもので、アルミ
単独によね、処理水中のフッ素濃度を安定してｏ８酵以
下に除去可能である。また本発明方法では、アルミニウ
ムイオンを添加する際、 ｐＨを６〜７に調節するもの
であるが、この理由は、フッ化アルミニウムの溶解度が
ｐＨ＝３〜６２で最小となり、またその他フッ素除去効
果及び放流基準（ＰＨが５．８以上）を考慮して決定し
たものである。The method of the present invention removes fluorine as aluminum fluoride precipitate by adding aluminum ions, and can stably remove the fluorine concentration in treated water to below O8 fermentation by using aluminum alone. In addition, in the method of the present invention, when adding aluminum ions, the pH is adjusted to 6 to 7. The reason for this is that the solubility of aluminum fluoride is minimum at pH = 3 to 62, and other fluoride removal effects are and discharge standards (PH of 5.8 or higher).
次に本発明方法の一実施例を図面に基いて説明する。第
１図は本実施例を実施するための装置を示す流れ図であ
る。図に１おいて、フッ素含有汚水ａは汚水槽１に貯留
後、汚水ポンプ２により流量定量タンク３へ送られ、一
定量に調節されて、薬品混合槽第１室４へ流入する。こ
こで硫酸バンド貯留タンク８から硫酸バンドポンプ１１
により硫酸バンド液が定量注入され、攪拌機１４により
汚水と充分混合される。Next, an embodiment of the method of the present invention will be explained based on the drawings. FIG. 1 is a flowchart showing an apparatus for carrying out this embodiment. In FIG. 1, fluorine-containing sewage a is stored in a sewage tank 1, then sent to a flow rate metering tank 3 by a sewage pump 2, adjusted to a constant amount, and then flows into a first chamber 4 of a chemical mixing tank. Here, from the sulfuric acid band storage tank 8 to the sulfuric acid band pump 11
The sulfuric acid solution is injected in a fixed amount and thoroughly mixed with the waste water by the stirrer 14.
硫酸バンドと混合された汚水は、薬品混合槽第２室５に
入り、アルカリ剤貯留タンク９からアルカリポンプ１２
により注入されるアルカリ剤と、攪拌機１５により混合
され、 ｐＨ値が６〜７となるよう調節される。ここで
溶存フッ素はフン化アルミニウムとなり、余剰分の水酸
化アルミニウムと共に汚水中へ析出するが、微細フロッ
クのため沈殿分離がしにくい。従って２次の薬品混合槽
第３室４で、凝集剤貯留タンク１０と、攪拌機１６によ
り混合し、沈降分離しやすいフロックを形成する。The wastewater mixed with sulfuric acid band enters the second chamber 5 of the chemical mixing tank, and is sent from the alkaline agent storage tank 9 to the alkaline pump 12.
It is mixed with the alkali agent injected by the stirrer 15, and the pH value is adjusted to 6 to 7. Here, the dissolved fluorine turns into aluminum fluoride and precipitates into the wastewater together with the excess aluminum hydroxide, but because of the fine flocs, precipitation and separation are difficult. Therefore, in the third chamber 4 of the secondary chemical mixing tank, the coagulant is mixed with the flocculant storage tank 10 by the stirrer 16 to form flocs that are easy to settle and separate.
フロック含有水は１次に沈殿槽７でフロックを汚泥とし
て沈殿分離する。上澄は処理水すとして放流等の次工程
へ送られ、フッ素は沈殿汚泥として、汚泥掻寄機１７に
より掻き集められ。The floc-containing water is first separated by sedimentation in a settling tank 7 in which the flocs are turned into sludge. The supernatant is sent to the next process such as discharge as treated water, and the fluorine is scraped up as settled sludge by a sludge scraper 17.
余剰汚泥Ｃとして系外〜処理される。It is processed outside the system as surplus sludge C.
本処理における反応は次のとおりとなる。The reaction in this process is as follows.
３ Ｆ−＋Ａｔ” ＝ Ａ４ ｒ、↓
理論上のアルミ必要量は、フン素置の袖となるが、フン
素除去率を上げるためには、アルミ量はフン素置の１０
倍以上とするのが好ましい。3 F-+At” = A4 r, ↓ The theoretical required amount of aluminum is the sleeve of the feces device, but in order to increase the fluorine removal rate, the amount of aluminum should be 10 times the amount of the feces device.
It is preferable to double or more.
壕だフッ化アルミニウムの溶解度の関連から。This is due to the solubility of aluminum fluoride.
処理水フン素置を安定して低濃度へ保つためには、処理
ｐＨ値を”６〜７の間に調節する必要がある。In order to stably maintain the treated water feces concentration at a low level, it is necessary to adjust the treatment pH value between 6 and 7.
第１表に実験データを記載する。なお８本発明方法で使
用可能な凝集剤としては１本実験で使用口たもの以外に
２例えばアコフロックＡ１１０（日本サイアナミド■製
）などのアニオン系高分子凝集剤及びクリフロックＣＰ
６２４ （栗田工業■製）などのカチオン系高分子凝集
剤等がある。Table 1 lists the experimental data. In addition to the flocculants that were used in this experiment, examples of flocculants that can be used in the method of the present invention include anionic polymer flocculants such as Acofloc A110 (manufactured by Nippon Cyanamid) and Cliff Floc CP.
There are cationic polymer flocculants such as 624 (manufactured by Kurita Kogyo ■).
第１表
条件
１、 硫酸バンド液は、工業用硫酸バンド（８％液ａｉ
Ａム０．）を使用。Table 1 Condition 1. The sulfate solution is industrial sulfate solution (8% liquid ai
Am0. )use.
２、 処理水はアニオン系高分子凝集剤（クリフィック
スＥＤＰ３５４ （栗田工業■製））を４岬添加し、１
５分靜置後の上澄液とする。2. 4 capes of anionic polymer flocculant (Cryfix EDP354 (manufactured by Kurita Industries)) were added to the treated water, and 1
Leave to stand for 5 minutes and use as supernatant.
以上のように２本発明方法によれば、フン素含有排水か
らフッ素を極めて低濃度にまで除去可能であり、放流水
フン素規制値に適合する排水が得られ１例えばごみ焼却
炉排水処理設備などに適用して好適である。As described above, according to the method of the present invention, fluorine can be removed from fluorine-containing wastewater to an extremely low concentration, and wastewater that meets the effluent fluorine regulation value can be obtained. It is suitable for application to, etc.
第１図は本発明方法の一実施例を実施するための装置を
示すフローシートである。
ｌ・・・汚水槽、２・・・流量定量タンク、４，５．６
・・・薬品混合槽第１．第２．第３室、７川沈殿槽。
８・・・硫酸バンド貯留タンク、９・・・アルカリ剤貯
留タンク、１０・・・凝集剤貯留タンク、１４．１５゜
１６・・・攪拌機、１７・・・汚泥掻寄機。
手続補正書（自発）（１）
昭和５７年 ５月ＩＯ日 を室
１１ （’ｌの表示
昭和５６年 特 許 願第 １９２１５１
号補１−をする者
事＋’ｌとの関係 特許出願人
住 所 東京都千代田区丸の内−’−１目５番
１号名 称（６２０）三菱重工業株式会社
代 理 人
明細書第２ページ第１８行の「ｐＨ＝３〜６２１ｒ Ｐ
Ｈ＝６〜６．２」と訂正する。
同上第３ページ最下行の「薬品混合横筒３４」を［薬品
混合槽第３室６」と訂正する。FIG. 1 is a flow sheet showing an apparatus for carrying out an embodiment of the method of the present invention. l...Sewage tank, 2...Flow rate metering tank, 4,5.6
...Chemical mixing tank 1st. Second. Room 3, Seven River Sedimentation Tank. 8... Sulfuric acid band storage tank, 9... Alkaline agent storage tank, 10... Coagulant storage tank, 14.15° 16... Stirrer, 17... Sludge scraper. Procedural amendment (spontaneous) (1) May IO date, 1980, Room 11 ('l indication 1982 Patent application No. 192151
Supplement 1-Relationship with +'l Patent Applicant Address Marunouchi, Chiyoda-ku, Tokyo-'-1, No. 5, No. 1 Name (620) Mitsubishi Heavy Industries, Ltd. Agent Page 2 of Specification Line 18 “pH=3-621rP
H=6-6.2". "Chemical mixing tank 34" at the bottom of the third page of the same page is corrected to "Chemical mixing tank 3rd chamber 6".
Claims (1)
にｐＨを６〜７に調節してフッ化アルミニウムを形成さ
せ沈殿除去すること・を特長とするフッ素含有排水の処
理方法。A method for treating fluorine-containing wastewater, which is characterized by adding aluminum ions to the fluorine-containing wastewater and adjusting the pH to 6 to 7 to form aluminum fluoride and removing the precipitate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19215181A JPS5895582A (en) | 1981-11-30 | 1981-11-30 | Treatment of fluorine containing waste water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP19215181A JPS5895582A (en) | 1981-11-30 | 1981-11-30 | Treatment of fluorine containing waste water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5895582A true JPS5895582A (en) | 1983-06-07 |
Family
ID=16286541
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP19215181A Pending JPS5895582A (en) | 1981-11-30 | 1981-11-30 | Treatment of fluorine containing waste water |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5895582A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002059174A (en) * | 2000-08-23 | 2002-02-26 | National Institute Of Advanced Industrial & Technology | Method for removing fluorine ions and remover |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4932472A (en) * | 1972-07-25 | 1974-03-25 | ||
| JPS5196159A (en) * | 1975-02-19 | 1976-08-23 | FUTSUSOGANJUJUSUINOSHORIHOHO | |
| JPS52141052A (en) * | 1976-05-20 | 1977-11-25 | Showa Koji Kk | Process of water containing fluorine |
| JPS5343744A (en) * | 1976-10-04 | 1978-04-20 | Toray Ind Inc | Polyamide molding material |
| JPS5343730A (en) * | 1976-10-02 | 1978-04-20 | Hoechst Ag | Production of coat and reactive lacquer |
| JPS54133746A (en) * | 1978-04-08 | 1979-10-17 | Showa Koji Kk | Method of changing water containing fluorine into drinking water |
-
1981
- 1981-11-30 JP JP19215181A patent/JPS5895582A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4932472A (en) * | 1972-07-25 | 1974-03-25 | ||
| JPS5196159A (en) * | 1975-02-19 | 1976-08-23 | FUTSUSOGANJUJUSUINOSHORIHOHO | |
| JPS52141052A (en) * | 1976-05-20 | 1977-11-25 | Showa Koji Kk | Process of water containing fluorine |
| JPS5343730A (en) * | 1976-10-02 | 1978-04-20 | Hoechst Ag | Production of coat and reactive lacquer |
| JPS5343744A (en) * | 1976-10-04 | 1978-04-20 | Toray Ind Inc | Polyamide molding material |
| JPS54133746A (en) * | 1978-04-08 | 1979-10-17 | Showa Koji Kk | Method of changing water containing fluorine into drinking water |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002059174A (en) * | 2000-08-23 | 2002-02-26 | National Institute Of Advanced Industrial & Technology | Method for removing fluorine ions and remover |
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