JPS6229117B2 - - Google Patents
Info
- Publication number
- JPS6229117B2 JPS6229117B2 JP5951683A JP5951683A JPS6229117B2 JP S6229117 B2 JPS6229117 B2 JP S6229117B2 JP 5951683 A JP5951683 A JP 5951683A JP 5951683 A JP5951683 A JP 5951683A JP S6229117 B2 JPS6229117 B2 JP S6229117B2
- Authority
- JP
- Japan
- Prior art keywords
- mercury
- organic
- ions
- waste liquid
- treatment
- 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
- 229910052753 mercury Inorganic materials 0.000 claims description 24
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 claims description 19
- 239000007788 liquid Substances 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 10
- 239000002244 precipitate Substances 0.000 claims description 9
- 239000002699 waste material Substances 0.000 claims description 9
- 239000003638 chemical reducing agent Substances 0.000 claims description 7
- 239000000126 substance Substances 0.000 claims description 7
- -1 mercury ions Chemical class 0.000 claims description 5
- 239000007800 oxidant agent Substances 0.000 claims description 4
- 239000013522 chelant Substances 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- 150000002500 ions Chemical class 0.000 claims description 2
- 239000005416 organic matter Substances 0.000 claims description 2
- NUJOXMJBOLGQSY-UHFFFAOYSA-N manganese dioxide Chemical compound O=[Mn]=O NUJOXMJBOLGQSY-UHFFFAOYSA-N 0.000 description 12
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 6
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 6
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 4
- WTDHULULXKLSOZ-UHFFFAOYSA-N Hydroxylamine hydrochloride Chemical compound Cl.ON WTDHULULXKLSOZ-UHFFFAOYSA-N 0.000 description 4
- 238000006864 oxidative decomposition reaction Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 150000002731 mercury compounds Chemical class 0.000 description 3
- 238000001179 sorption measurement Methods 0.000 description 3
- 239000002351 wastewater Substances 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 239000003463 adsorbent Substances 0.000 description 2
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 description 2
- NWUYHJFMYQTDRP-UHFFFAOYSA-N 1,2-bis(ethenyl)benzene;1-ethenyl-2-ethylbenzene;styrene Chemical compound C=CC1=CC=CC=C1.CCC1=CC=CC=C1C=C.C=CC1=CC=CC=C1C=C NWUYHJFMYQTDRP-UHFFFAOYSA-N 0.000 description 1
- 229910021536 Zeolite Inorganic materials 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 235000003891 ferrous sulphate Nutrition 0.000 description 1
- 239000011790 ferrous sulphate Substances 0.000 description 1
- 239000003456 ion exchange resin Substances 0.000 description 1
- 229920003303 ion-exchange polymer Polymers 0.000 description 1
- BAUYGSIQEAFULO-UHFFFAOYSA-L iron(2+) sulfate (anhydrous) Chemical compound [Fe+2].[O-]S([O-])(=O)=O BAUYGSIQEAFULO-UHFFFAOYSA-L 0.000 description 1
- 229910000359 iron(II) sulfate Inorganic materials 0.000 description 1
- BABMCXWQNSQAOC-UHFFFAOYSA-M methylmercury chloride Chemical compound C[Hg]Cl BABMCXWQNSQAOC-UHFFFAOYSA-M 0.000 description 1
- NZMAJUHVSZBJHL-UHFFFAOYSA-N n,n-dibutylformamide Chemical compound CCCCN(C=O)CCCC NZMAJUHVSZBJHL-UHFFFAOYSA-N 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 235000010265 sodium sulphite Nutrition 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 239000010457 zeolite Substances 0.000 description 1
Landscapes
- Removal Of Specific Substances (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
- Treatment Of Water By Ion Exchange (AREA)
Description
この発明は有機水銀及び有機物を含有する廃液
の分解処理方法に関する。
従来、有機水銀化合物を含有する廃液に対して
は、活性炭、ゼオライトなどの吸着剤を用いて、
吸着処理を行つていた。しかし、これらの方法で
吸着処理された有機水銀化合物は再溶出する危険
性が有り、また有機水銀化合物を吸着後の吸着剤
を安全に処理する方法は確立されておらず、実用
上の問題点があつた。
この発明の目的は上記の諸問題点を解決した実
用性に優れた有機水銀及び有機物を含有する廃液
の処理方法を提供することにある。
この発明によれば有機水銀及び有機物を含有す
る水銀廃液に、酸を添加し、酸化剤を加え、酸化
分解反応を行つて、有機水銀を無機水銀イオンに
分解した後、還元剤を加えて、過剰の酸化剤の還
元を行つた後、該処理液を水銀吸着用キレート樹
脂で処理することを特徴とする有機水銀及び水機
物を含有する廃液の処理方法が得られる。
この発明は、大学、試験所などから排出され
る、メチル塩化水銀、エチル塩化水銀、チメオサ
ールなどの有機水銀及びメタノール、エタノー
ル、ベンゼン等の有機物を含有する水銀廃液に、
酸を添加しPHを2.0以下とした後、酸化剤とし
て、過マンガン酸塩を加えて、酸化分解を行い、
有機水銀を完全に無機水銀に分解する。次に上記
過マンガン酸塩による酸化分解反応で発生した多
量の二酸化マンガンを含有する沈殿物を分離す
る。次に沈殿物を分離した処理液に還元剤として
例えば塩酸ヒドロキシルアミンを添加して、過剰
の過マンガン酸イオンを還元後、水銀吸着用キレ
ート樹脂で無機水銀イオンの処理を行う。
以上、この発明による有機水銀及び有機物を含
有する廃液の処理方法は、酸化分解反応で発生す
る多量の二酸化マンガンを含有する沈殿物を予め
分離除去するため、該沈殿物が消費する還元剤の
添加が不要となり、経済的かつ効率よく処理出来
る。特に有機物、メタノール、アルコール、ベン
ゼン等の溶媒等を含有している場合には、過マン
ガン酸塩の消費量が非常に多く、それに伴ない二
酸化マンガンの発生が非常に多くなるので、本発
明の適用は非常に有効である。
尚、本処理過程で発生する二酸化マンガンを含
有する沈殿物には有機水銀イオンが混入する恐れ
がある為無機水銀イオンを吸着して飽和した水銀
吸着用イオン交換樹脂と一諸に処理する方法が望
ましい。
実施例
この発明の効果を示すために、第１表に示す組
成の廃水を、第２表の処理実施例で処理した。な
お、この発明の効果を明らかにするためにこの発
明によらない、二酸化マンガン含有沈殿物を別
しない処理を併せて行つた。処理結果を第３表、
第４表に示した。
The present invention relates to a method for decomposing waste liquid containing organic mercury and organic substances. Conventionally, waste liquids containing organic mercury compounds are treated using adsorbents such as activated carbon and zeolite.
Adsorption treatment was being carried out. However, there is a risk that organic mercury compounds adsorbed by these methods may be re-eluted, and no method has been established to safely treat the adsorbent after adsorbing organic mercury compounds, which poses practical problems. It was hot. An object of the present invention is to provide a highly practical method for treating waste liquid containing organic mercury and organic substances, which solves the above-mentioned problems. According to this invention, an acid is added to a mercury waste solution containing organic mercury and organic matter, an oxidizing agent is added, an oxidative decomposition reaction is carried out to decompose the organic mercury into inorganic mercury ions, and then a reducing agent is added, A method for treating a waste liquid containing organic mercury and water substances is obtained, which comprises treating the treated liquid with a chelate resin for adsorbing mercury after reducing the excess oxidizing agent. This invention is applicable to mercury waste liquid containing organic mercury such as methylmercury chloride, ethylmercuric chloride, and thimeosal, and organic substances such as methanol, ethanol, and benzene, discharged from universities, laboratories, etc.
After adding acid to lower the pH to 2.0 or less, add permanganate as an oxidizing agent to perform oxidative decomposition.
Completely decomposes organic mercury into inorganic mercury. Next, a precipitate containing a large amount of manganese dioxide generated by the oxidative decomposition reaction using the permanganate is separated. Next, a reducing agent such as hydroxylamine hydrochloride is added to the treatment liquid from which the precipitate has been separated to reduce excess permanganate ions, and then the inorganic mercury ions are treated with a mercury adsorption chelate resin. As described above, in the method for treating waste liquid containing organic mercury and organic substances according to the present invention, in order to pre-separate and remove the precipitate containing a large amount of manganese dioxide generated in the oxidative decomposition reaction, a reducing agent that is consumed by the precipitate is added. This eliminates the need for processing, making it possible to process economically and efficiently. In particular, when organic substances, solvents such as methanol, alcohol, benzene, etc. are contained, the amount of permanganate consumed is very large, and as a result, the generation of manganese dioxide is very large. The application is very effective. In addition, since there is a risk that organic mercury ions may be mixed into the precipitate containing manganese dioxide generated during this treatment process, it is recommended that the precipitate be treated with an ion exchange resin for mercury adsorption that is saturated by adsorbing inorganic mercury ions. desirable. Examples In order to demonstrate the effects of this invention, wastewater having the composition shown in Table 1 was treated according to the treatment examples shown in Table 2. Incidentally, in order to clarify the effects of the present invention, a treatment which was not based on the present invention and did not separate the manganese dioxide-containing precipitate was also carried out. Table 3 shows the processing results.
It is shown in Table 4.
【表】【table】
【表】【table】
【表】
(b) 二酸化マンガンを含有する沈殿
物を分離しない場合の消費量。
[Table] (b) Consumption amount when the precipitate containing manganese dioxide is not separated.
【表】
第３表、第４表で明らかなように、この発明の
方法によれば、より少ない還元剤の量で排水規準
以下に安全に処理できる。
なお、実施例では還元剤として塩酸ヒドロキシ
ルアミンを用いたが、亜硫酸ソーダー、硫酸第一
鉄などの還元剤を用いても本発明の効果は変わら
ない。[Table] As is clear from Tables 3 and 4, according to the method of the present invention, wastewater can be safely treated to below the wastewater standards with a smaller amount of reducing agent. In the examples, hydroxylamine hydrochloride was used as the reducing agent, but the effects of the present invention do not change even if a reducing agent such as sodium sulfite or ferrous sulfate is used.
Claims (1)
理に於いて、酸化剤として、過マンガン酸塩を加
え、有機水銀を無機水銀イオンに分解後、生成す
る沈殿物を分離し、該沈殿を分離した処理液に還
元剤を加え、過剰の過マンガン酸イオンを還元
後、水銀吸着用キレート樹脂で処理することを特
徴とする、有機水銀及び有機物を含有する廃液の
処理方法。1. In the treatment of mercury waste liquid containing organic mercury and organic matter, permanganate was added as an oxidizing agent, the organic mercury was decomposed into inorganic mercury ions, and the resulting precipitate was separated; A method for treating waste liquid containing organic mercury and organic substances, which comprises adding a reducing agent to the treatment liquid to reduce excess permanganate ions, and then treating the liquid with a chelate resin for adsorbing mercury.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5951683A JPS59186691A (en) | 1983-04-05 | 1983-04-05 | Process for treating waste liquid containing organic mercury and organic substance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5951683A JPS59186691A (en) | 1983-04-05 | 1983-04-05 | Process for treating waste liquid containing organic mercury and organic substance |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59186691A JPS59186691A (en) | 1984-10-23 |
| JPS6229117B2 true JPS6229117B2 (en) | 1987-06-24 |
Family
ID=13115502
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5951683A Granted JPS59186691A (en) | 1983-04-05 | 1983-04-05 | Process for treating waste liquid containing organic mercury and organic substance |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59186691A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108203182B (en) * | 2018-01-16 | 2020-12-08 | 南乙环境工程技术（上海）有限公司 | Treatment process and system for simultaneously removing total nickel and total cadmium in wastewater |
-
1983
- 1983-04-05 JP JP5951683A patent/JPS59186691A/en active Granted
Also Published As
| Publication number | Publication date |
|---|---|
| JPS59186691A (en) | 1984-10-23 |
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