JPS5915705B2 - Process for treating cyanogen solution containing iron cyanide complex ions - Google Patents
Process for treating cyanogen solution containing iron cyanide complex ionsInfo
- Publication number
- JPS5915705B2 JPS5915705B2 JP15603676A JP15603676A JPS5915705B2 JP S5915705 B2 JPS5915705 B2 JP S5915705B2 JP 15603676 A JP15603676 A JP 15603676A JP 15603676 A JP15603676 A JP 15603676A JP S5915705 B2 JPS5915705 B2 JP S5915705B2
- Authority
- JP
- Japan
- Prior art keywords
- waste liquid
- complex ions
- cyanide complex
- containing iron
- iron cyanide
- 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.)
- Expired
Links
Landscapes
- Heat Treatment Of Water, Waste Water Or Sewage (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Description
【発明の詳細な説明】
本発明ハ、フェロシアンイオンやフェリシアンイオン等
の鉄シアン錯イオンを含むシアン廃液の処理方法に関す
る。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for treating cyanide waste liquid containing iron cyanide complex ions such as ferrocyanide ions and ferricyanide ions.
本発明者等は先に上記廃液をアルカリ金属水酸化物の共
存下１４０℃以上の温度で加熱処理する方法を提案した
（特開昭４９−１０５８号公報）。The present inventors have previously proposed a method of heat-treating the above-mentioned waste liquid at a temperature of 140° C. or higher in the coexistence of an alkali metal hydroxide (Japanese Patent Application Laid-Open No. 1058/1983).
しかし、上記方法では大量の廃液を廃液中の鉄シアン錯
イオン濃度が数ｐｐｍ程度になる迄処理したい場合、数
時間の処理時間を必要とする為、大量の廃液を連続して
処理することは困難で、どうしてもバッチ式の処理によ
らねばならず、かかる難点の解消が望まれていた。However, with the above method, if you want to treat a large amount of waste liquid until the concentration of iron cyanide complex ions in the waste liquid reaches several ppm, it requires several hours of processing time, so it is difficult to treat a large amount of waste liquid continuously. This is difficult and requires batch-type processing, and it has been desired to eliminate such difficulties.
本発明はかかる要望に鑑みなされたもので、該廃液の処
理速度を著しく向上させ、数分間の処理時間で廃液中の
鉄シアン錯イオン濃度を数ｐｐｒ１１／ｌ−ダーに処理
することにより大量の廃液をも連続して処理し得る方法
を提供するものである。The present invention was developed in view of such a need, and it significantly improves the processing speed of the waste liquid and reduces the concentration of iron cyanide complex ions in the waste liquid to several ppr11/L in a few minutes of processing time. The present invention provides a method in which even waste liquid can be continuously treated.
しがしてその主旨とするところは、鉄シアン錯イオンを
含むシアン廃液をＰＨ１０，５以上とし、かつ塩素含有
量を０．２％〜３％となした条件下、１８０℃以上の温
度で加熱処理するところにある。However, the gist of this is that cyanide waste containing iron cyanide complex ions is treated at a temperature of 180°C or higher under conditions where the pH is 10.5 or higher and the chlorine content is 0.2% to 3%. It is where it is heat treated.
すなわち、本発明の処理方法は、廃液のＰＨ１０，５以
上、加熱処理温度１８０℃以上の条件における該廃液中
の鉄シアン錯イオンと含有量０．２％〜３％の共存塩素
との相乗効果により処理速度を著しく向上し得たもので
ある。That is, the treatment method of the present invention has a synergistic effect between the iron cyanide complex ions in the waste liquid and the coexisting chlorine content of 0.2% to 3% under the conditions that the pH of the waste liquid is 10.5 or higher and the heat treatment temperature is 180°C or higher. This allows the processing speed to be significantly improved.
本発明の処理方法において上記条件を一つでも逸脱する
と処理速度の著しい効果は得られず、連続処理が困難と
なる。In the treatment method of the present invention, if even one of the above conditions is violated, a significant effect on the treatment speed cannot be obtained, and continuous treatment becomes difficult.
本発明の廃液処理方法において、該廃液のＰＨを１０．
５以上となす為には適宜任意のものが用いられる。In the waste liquid treatment method of the present invention, the pH of the waste liquid is set to 10.
In order to make it 5 or more, any suitable value can be used.
例えばＮａＯＨ，ＫＯＨ，ＬｉＯＨ等のアルカリ金属水
酸化物の他、該廃液を処理する過程において加水分解し
アルカリ金属水酸化物となり得るＮａＣＯ３、ＫＣＯ３
等のアルカリ金属炭酸化物等であってもよい。For example, in addition to alkali metal hydroxides such as NaOH, KOH, and LiOH, NaCO3 and KCO3 can be hydrolyzed to become alkali metal hydroxides in the process of treating the waste liquid.
It may also be an alkali metal carbonate such as.
また、該廃液中の塩素含有量を０．２％〜３％となす為
にはＮａ１ｌ ＫＣＬ ＭｇＣｈ等を上記塩素含有量と
なる様、該廃液に添加してもよいし、あるいは海水の塩
素温度は１．５％〜２．５％である為海水を用い上記塩
素含有量としても何らさしつかえない。In addition, in order to make the chlorine content in the waste liquid 0.2% to 3%, Na1l KCL MgCh etc. may be added to the waste liquid so as to have the above chlorine content, or the chlorine temperature of the seawater may be adjusted. Since it is 1.5% to 2.5%, there is no problem in using seawater as the above chlorine content.
しかして、本発明の方法で該廃液を処理するには塩素含
有量を上述の方法で０．２％〜３％となし、処理が終了
する迄該廃液のＰＨを１０．５％以上維持させる為、上
述したアルカリ金属水酸化物等を処理中適宜添加するか
あるいは予じめ処理開始前に該廃液を高ＰＨのものとし
ておき、任意の方法で１８０℃以上に加熱すればよい。Therefore, in order to treat the waste liquid by the method of the present invention, the chlorine content is adjusted to 0.2% to 3% by the method described above, and the pH of the waste liquid is maintained at 10.5% or more until the treatment is completed. Therefore, the above-mentioned alkali metal hydroxide or the like may be appropriately added during the treatment, or the waste liquid may be made to have a high pH before the start of the treatment, and then heated to 180° C. or higher by any method.
一般的には耐圧容器内に廃液を収容し、該容器を外部か
ら加熱するあるいは該容器内の廃液中に高圧水蒸気を直
接吹込む等の方法が採られる。Generally, a method is adopted in which the waste liquid is stored in a pressure-resistant container, and the container is heated from the outside, or high-pressure steam is directly blown into the waste liquid in the container.
この高圧水蒸気を直接吹込む方法は加熱作用と同時に液
撹拌作用をもなすので均−処理上好ましい。This method of directly blowing high-pressure steam is preferable in terms of uniform treatment because it provides a heating action and a liquid stirring action at the same time.
なお、鉄シアン錯イオンは分解するとアンモニアガスを
発生するので、処理中、処理容器内のガスを一部連続放
出させて廃液と接する気相部の換気を良くすると、処理
速度が一層促進される。Furthermore, since iron cyanide complex ions generate ammonia gas when decomposed, the processing speed can be further accelerated by continuously releasing some of the gas in the processing container during processing to improve ventilation of the gas phase that comes into contact with the waste liquid. .
本発明によれば、黄血塩、赤血塩、貧血ソーダ、赤面ソ
ーダ、ベルリン青、ベルリン縁等の分子内にＣＦｅ Ｘ
（ＣＮ ）ａ ） ’基あるいはＣＦｅｍ（ＣＮ）
ａ） ”基を有する物質を含むシアレ廃液を効果的に
処理し得る。According to the present invention, CFe
(CN)a)' group or CFem(CN)
a) It is possible to effectively treat a Siare waste liquid containing a substance having a group.
以下、実施例により本発明の詳細な説明する。Hereinafter, the present invention will be explained in detail with reference to Examples.
天井より容器の底面近（まで延びた水蒸気供給管及び天
井に排気口を有する全容積１０００１の耐圧容器に鉄シ
アン錯塩を溶解した各種の被処理液を５００１投入し、
ＮａＯＨを被処理液に添加、該被処理液のＰＨを下表の
如くしたのち海水（塩素濃度２％）を投入、該被処理液
の塩素含有量を下表に示す量とした。Into a pressure-resistant container with a total volume of 10,001 and having a steam supply pipe extending from the ceiling to near the bottom of the container and an exhaust port on the ceiling, 5,001 of various liquids to be treated in which iron cyanide complex salts were dissolved were charged,
NaOH was added to the liquid to be treated, the pH of the liquid to be treated was adjusted as shown in the table below, and then seawater (chlorine concentration 2%) was added to adjust the chlorine content of the liquid to be treated as shown in the table below.
次いで水蒸気供給管より高圧の水蒸気を水溶液中に吹込
んで液をそれぞれ下表に示す温度で３分間加熱し、加熱
後の液中の鉄シアン錯イオン濃度を測定した。Next, high-pressure steam was blown into the aqueous solution from a steam supply pipe, and each solution was heated for 3 minutes at the temperatures shown in the table below, and the concentration of iron cyanide complex ions in the solution after heating was measured.
下表にそれらの処理の条件及び分析結果をまとめて示す
。The table below summarizes the processing conditions and analysis results.
以上の実施例からも明らかな様に、本発明の廃液処理方
法は極めて短時間で鉄シアン錯イオンを含むシアン廃液
を処理し得る為、該廃液の連続処理が可能である。As is clear from the above examples, the waste liquid treatment method of the present invention can treat cyanide waste liquid containing iron cyanide complex ions in an extremely short period of time, so that continuous treatment of the waste liquid is possible.
（注１）二上水道水に表示の化合物を溶解して調整。(Note 1) Prepared by dissolving the indicated compound in Nijo tap water.
（注２）：（注３）の方法で測定した全シアン濃度から
ＪＩＳＫＯ１０２（１９７４年）の２９．１．１及び２
９．２に該当する方法に従って測定した遊離シアン濃度
との差を求め、その値を１．３６倍して算出した。(Note 2): From the total cyanide concentration measured by the method of (Note 3), JISKO102 (1974) 29.1.1 and 2
The difference from the free cyanide concentration measured according to the method corresponding to 9.2 was calculated, and the value was multiplied by 1.36.
（注３）：ＪＩＳ ＫＯ１０２（１９７４年）の２９．
１．２及び２９．２に該当する方法に従って測定。(Note 3): 29. of JIS KO102 (1974).
Measured according to the methods applicable to 1.2 and 29.2.
Claims (1)
以上とし、かつ塩素含有量を０．２％〜３％となした条
件下、１８０℃以上の温度で加熱処理することを特徴と
する鉄シアン錯イオンを含むシアン廃液の処理方法。1 The cyanide waste solution containing iron cyanide complex ions was adjusted to pH 10.5.
A method for treating cyanide waste liquid containing iron cyanide complex ions, which is characterized in that it is heat-treated at a temperature of 180° C. or higher under the above conditions and a chlorine content of 0.2% to 3%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15603676A JPS5915705B2 (en) | 1976-12-23 | 1976-12-23 | Process for treating cyanogen solution containing iron cyanide complex ions |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15603676A JPS5915705B2 (en) | 1976-12-23 | 1976-12-23 | Process for treating cyanogen solution containing iron cyanide complex ions |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5378976A JPS5378976A (en) | 1978-07-12 |
| JPS5915705B2 true JPS5915705B2 (en) | 1984-04-11 |
Family
ID=15618906
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15603676A Expired JPS5915705B2 (en) | 1976-12-23 | 1976-12-23 | Process for treating cyanogen solution containing iron cyanide complex ions |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5915705B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5822859B2 (en) * | 2012-06-28 | 2015-11-25 | 三重中央開発株式会社 | Method for treating waste liquid containing water-soluble iron cyano complex |
-
1976
- 1976-12-23 JP JP15603676A patent/JPS5915705B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5378976A (en) | 1978-07-12 |
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