JP2587328B2 - Adsorbent and adsorption treatment method for organic chlorine compounds - Google Patents
Adsorbent and adsorption treatment method for organic chlorine compoundsInfo
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- JP2587328B2 JP2587328B2 JP3141997A JP14199791A JP2587328B2 JP 2587328 B2 JP2587328 B2 JP 2587328B2 JP 3141997 A JP3141997 A JP 3141997A JP 14199791 A JP14199791 A JP 14199791A JP 2587328 B2 JP2587328 B2 JP 2587328B2
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- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
- Separation Of Gases By Adsorption (AREA)
Description
【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION
【０００１】[0001]
【産業上の利用分野】本発明は、排水、廃液等の水相や
排ガス等を含む気相中の特定物質を吸着する吸着剤およ
びそれを用いた処理法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an adsorbent for adsorbing a specific substance in a gas phase including an aqueous phase such as waste water and waste liquid and an exhaust gas, and a treatment method using the same.
【０００２】[0002]
【従来の技術】従来、活性炭は、種々の液相系、気相系
において特定目的物質の吸着除去に広範に用いられてき
ている。しかし、これら系は、通常、多数の物質からな
る混合系であるために、吸着対象物質以外のものも吸着
してしまうので、本来の吸着能力を発揮できず、効率的
な除去ができない。2. Description of the Related Art Conventionally, activated carbon has been widely used for adsorption and removal of specific target substances in various liquid and gas phase systems. However, since these systems are usually mixed systems composed of a large number of substances, they also adsorb substances other than the substance to be adsorbed, so that they cannot exhibit their original adsorption ability and cannot be efficiently removed.
【０００３】また、物理吸着だけでなく、特定物質を化
学的に反応させる目的で吸着能力を向上させる添着技術
もあるが、一部の臭気物質に限られること、及び先述の
他成分の影響を受けるため、十分な改善を期待できな
い。[0003] In addition to the physical adsorption, there is also an impregnation technique for improving the adsorption capacity for the purpose of chemically reacting a specific substance, but it is limited to some odorous substances, and the influence of the above-mentioned other components is limited. Because of this, we cannot expect sufficient improvement.
【０００４】液相系における具体例として、クリーニン
グ排水におけるＴＣＥ（テトラクロロエチレン）の除去
が挙げられる。クリーニング排水は、ＴＯＣ（有機物）
を数百ｍｇ／Ｌ（リットル）程度含むため、活性炭によ
るクリーニング排水ＴＣＥの除去効率は、ＴＣＥ単一成
分系に比べ極めて低いものになっている。A specific example of a liquid phase system is removal of TCE (tetrachloroethylene) from cleaning wastewater. Cleaning wastewater is TOC (organic matter)
Is contained in the order of several hundred mg / L (liter), the removal efficiency of the cleaning wastewater TCE by activated carbon is extremely lower than that of the TCE single component system.
【０００５】[0005]
【発明が解決しようとする課題】本発明の目的は、特定
物質を単一成分系で吸着した場合の吸着能力を混合成分
系においても維持させることのできる吸着剤およびそれ
を用いた処理方法を提供することにある。SUMMARY OF THE INVENTION An object of the present invention is to provide an adsorbent capable of maintaining the adsorption ability when a specific substance is adsorbed in a single component system even in a mixed component system, and a treatment method using the same. To provide.
【０００６】[0006]
【課題を解決するための手段】本発明は、シリカ系、ア
ルミナ系、マグネシア系および炭素系からなる群から選
択された１または複数の吸着剤の表面に少なくとも有機
塩素化合物に対して選択透過機能を有する高分子化合物
の被膜を形成してなる有機塩素化合物の選択性吸着剤、
およびシリカ系、アルミナ系、マグネシア系および炭素
系からなる群から選択された１または複数の吸着剤の表
面に少なくとも有機塩素化合物に対して選択透過機能を
有する高分子化合物の被膜を形成してなる選択性吸着剤
を水または気体と接触させ、水中又は気体中に含まれる
物質の内該被膜を通過した有機塩素化合物を吸着除去す
ることを特徴とする有機塩素化合物の吸着処理法であ
り、これにより上記課題を解決できる。SUMMARY OF THE INVENTION The present invention is directed to a silica-based,
Select from the group consisting of lumina, magnesia and carbon
At least an organic surface on one or more selected adsorbents
Selective adsorbent of organic chlorine compounds obtained by forming a film of the polymer compound having the permselective function for chlorine compounds,
And silica, alumina, magnesia and carbon
Contacting water or gas with a selective adsorbent formed by forming a coating of a polymer compound having a selective permeation function on at least an organochlorine compound on the surface of one or more adsorbents selected from the group consisting of a system ; An organic chlorine compound adsorption treatment method characterized by adsorbing and removing an organic chlorine compound that has passed through the coating in a substance contained in water or a gas.
【０００７】本発明において、選択透過機能とは、物
質、例えば、イオン、原子、分子等の内、少なくとも有
機塩素化合物を選択的に透過する機能を言う。従って、
該特定の構造を有する物質は、１種に限定されず、複数
の構造を許容するものである。また、本発明の選択性吸
着剤は、該選択透過された物質の少なくとも１種は吸着
除去できる構造を吸着剤本体に有していなければならな
い。In the present invention, the selective permeation function means that at least one of substances, for example, ions, atoms, molecules, etc.
Refers to the function of selectively permeating chlorine compounds . Therefore,
The substance having the specific structure is not limited to one kind, but may have a plurality of structures. In addition, the selective adsorbent of the present invention must have a structure in which at least one of the selectively permeated substances can be adsorbed and removed in the adsorbent body.
【０００８】また、本発明の吸着処理方法においては、
少なくとも１種の除去しようとする特定物質に対して選
択透過性および吸着性が選択性吸着剤に認められれば十
分であり、該特定物質以外の透過性および吸着性は任意
である。In the adsorption treatment method of the present invention,
It is sufficient that the selective adsorbent has selective permeability and adsorptivity for at least one specific substance to be removed, and the permeability and adsorptivity other than the specific substance are arbitrary.
【０００９】また、本発明方法において水または気体と
選択性吸着剤とを接触させる方法は任意であり、従来公
知の手段が適用できる。例えば、選択性吸着剤を充填し
た層にそれらを通過させる方法、選択性吸着剤を面に担
持させて接触させる方法、選択性吸着剤を浮遊させて使
用する方法等が挙げられる。The method of contacting water or gas with the selective adsorbent in the method of the present invention is optional, and conventionally known means can be applied. For example, a method in which the selective adsorbent is passed through a layer filled with the selective adsorbent, a method in which the selective adsorbent is supported on a surface, and a method in which the selective adsorbent is suspended and used, and the like can be used.
【００１０】これら方法においては、各々の物理条件、
例えば、圧力、温度、特定物質の濃度等を適宜調整する
ことが好ましい。また、本発明の選択性吸着剤の被膜
は、単層でも複層構造でもよい。また、選択性吸着剤の
吸着剤本体は、１種でもそれ以上でもよい。選択性吸着
剤の形状は、従来の吸着剤の形状に限定されることはな
く、任意である。例えば、球状、板状、針状等が挙げら
れる。選択性吸着剤の大きさも任意であるが、通常、
０．５〜５ｍｍの範囲から選択できる。In these methods, each physical condition,
For example, it is preferable to appropriately adjust the pressure, the temperature, the concentration of the specific substance, and the like. Further, the film of the selective adsorbent of the present invention may have a single layer or a multilayer structure. Further, the adsorbent body of the selective adsorbent may be one kind or more. The shape of the selective adsorbent is not limited to the shape of the conventional adsorbent, but is arbitrary. For example, a spherical shape, a plate shape, a needle shape and the like can be mentioned. The size of the selective adsorbent is also arbitrary, but usually,
It can be selected from the range of 0.5 to 5 mm.
【００１１】選択性吸着剤の選択透過機能を有する被膜
の厚さは、０．０５〜１．０ｍｍの範囲から選択される
のが一般的である。該被膜は、吸着剤の表面に設けられ
るが、必ずしも表面全部を被覆しなければならないもの
ではなく、所望により、一部吸着剤表面が露出していて
もよい。The thickness of the film having the function of selectively permeating the selective adsorbent is generally selected from the range of 0.05 to 1.0 mm. The coating is provided on the surface of the adsorbent, but does not necessarily have to cover the entire surface, and the adsorbent surface may be partially exposed if desired.
【００１２】本発明の選択性吸着剤は、所望により、通
常の吸着剤と併用して使用することにより、種々の水ま
たは気体の処理法の幅を広くすることができる。本発明
における選択性吸着剤に使用される選択透過機能を有す
る被膜が設けられる吸着剤本体としては、シリカ系、ア
ルミナ系、マグネシア系および炭素系からなる群から選
択された１または複数の吸着剤が使用できる。例えば、
具体的には、活性炭、骨炭、ゼオライト、シリカゲル、
活性アルミナ、活性白土、マグネシア等が挙げられる。The selective adsorbent of the present invention can be used in combination with an ordinary adsorbent, if desired, to widen the range of various water or gas treatment methods. As the adsorbent body provided with a film having a selective permeation function used for the selective adsorbent in the present invention, silica-based,
Select from the group consisting of lumina, magnesia and carbon
One or more selected adsorbents can be used. For example ,
In concrete terms, activated carbon, bone charcoal, zeolite, silica gel,
Activated alumina, activated clay, Ma Guneshi A, and the like.
【００１３】本発明に使用できる吸着剤を被覆する高分
子化合物としては、天然物でも合成化合物でもよく、公
知の逆浸透膜（ＲＯ膜）、限外濾過膜（ＵＦ膜）、気体
分離膜等が挙げられ、これらの素材としては、例えば、
セルロース系、ポリアミド系、ポリスルフォン系、オレ
フィン系、ポリアクリロニトリル系、ポリンビニルアル
コール系、テフロン系等が使用できる。また、被吸着物
質の種類によっては、ポリプロピレンやポリエチレンの
フィルムでもかまわない。The polymer compound for coating the adsorbent that can be used in the present invention may be a natural product or a synthetic compound, and may be a known reverse osmosis membrane (RO membrane), ultrafiltration membrane (UF membrane), gas separation membrane, or the like. And these materials include, for example,
Cellulose-based, polyamide-based, polysulfone-based, olefin-based, polyacrylonitrile-based, polyvinylvinyl-based, and Teflon-based can be used. Depending on the type of the substance to be adsorbed, a polypropylene or polyethylene film may be used.
【００１４】これら高分子化合物を吸着剤に被覆する方
法は、公知の手段が適用できる。例示すれば、これら高
分子化合物を適当な有機溶媒に溶解した溶液に含浸ある
いは該溶液を噴霧して被覆する方法、あるいは高分子化
合物を溶融して吸着剤にコーティングする方法等が挙げ
られる。Known methods can be applied to the method of coating these polymer compounds with the adsorbent. For example, a method of impregnating a solution in which the polymer compound is dissolved in an appropriate organic solvent or spraying the solution to coat the polymer, or a method of melting the polymer compound and coating the adsorbent is used.
【００１５】[0015]
【作用】本発明の選択性吸着剤の実施態様を図を参照し
て説明する。図１は選択性吸着剤１の断面を模式的に示
したものであり、選択性吸着剤１は活性炭２の表面に選
択透過機能のあるフィルム３をコーティングしてなる。An embodiment of the selective adsorbent of the present invention will be described with reference to the drawings. FIG. 1 schematically shows a cross section of the selective adsorbent 1. The selective adsorbent 1 is obtained by coating a surface of an activated carbon 2 with a film 3 having a selective permeation function.
【００１６】また、図１において、この選択性吸着剤１
が多成分の混合系において、特定物質を選択的に透過す
るようすを簡単に示している。即ち、○で示した物質
４、△で示した物質５、□で示した物質６が夫々互いに
異なる構造であり、全て活性炭に吸着可能であると仮定
し、除去したい目的物質である有機塩素化合物は物質５
であるとする。この場合、本発明の選択性吸着剤は、物
質５のみを選択的に透過する機能を有する高分子化合物
の被膜フィルム３を選択する。フィルム３を透過した物
質５は、通常、活性炭２内部のマクロポア７を通り、ミ
クロポア８で吸着される。In FIG. 1, this selective adsorbent 1
Briefly shows that a specific substance is selectively permeated in a mixed system of multiple components. That is, assuming that the substance 4 indicated by ○, the substance 5 indicated by △, and the substance 6 indicated by □ have different structures from each other, and all of them can be adsorbed on activated carbon . Is substance 5
And In this case, as the selective adsorbent of the present invention, a coated film 3 of a polymer compound having a function of selectively permeating only the substance 5 is selected. The substance 5 that has passed through the film 3 normally passes through the macropores 7 inside the activated carbon 2 and is adsorbed by the micropores 8.
【００１７】一方、通常の活性炭では、図２に示したよ
うに活性炭に吸着される物質４〜６は、全てマクロポア
７からミクロポア８に入るため、本来吸着しなければな
らない物質５の吸着量が少なくなる。On the other hand, in the case of ordinary activated carbon, as shown in FIG. 2, all of the substances 4 to 6 adsorbed on the activated carbon enter the micropores 8 from the macropores 7. Less.
【００１８】コーティングフィルムは吸着したい物質を
選択的に透過する性質を有しなければならないが、吸着
対象物質が複数の場合は、複数の物質に対して透過性を
有してもよい。The coating film must have a property of selectively permeating a substance to be adsorbed. If there are a plurality of substances to be adsorbed, the coating film may have permeability to a plurality of substances.
【００１９】具体的には、有機物（ＴＯＣ）に共存する
有機塩素化合物含有水から有機塩素化合物を除去する場
合が挙げられ、選択透過性フィルムとしてポリエチレン
フィルム（ＰＥ）フィルムやポリプロピレン（ＰＰ）フ
ィルムを活性炭に適用した選択性吸着剤を充填したカラ
ムに該水を通過させることにより極めて効果的に有機塩
素化合物を選択的に吸着、除去することができる。Specifically, there is a case where an organic chlorine compound is removed from water containing an organic chlorine compound coexisting with an organic substance (TOC), and a polyethylene film (PE) film or a polypropylene (PP) film is used as a selectively permeable film. By passing the water through a column filled with a selective adsorbent applied to activated carbon, the organic chlorine compound can be selectively adsorbed and removed very effectively.
【００２０】本発明の選択性吸着剤は、その吸着剤本体
の内部は、従来の吸着剤のようにポア構造が保持され、
表面は選択透過機能膜で被覆されているため、該被膜を
挟んでポア内部の系とポア外部の系に濃度勾配が生じ、
その浸透圧と該被膜フィルム３の性状によって選択透過
性が生じるものと考えられる。In the selective adsorbent of the present invention, the inside of the adsorbent main body has a pore structure like a conventional adsorbent,
Since the surface is coated with the permselective functional membrane, a concentration gradient occurs between the system inside the pore and the system outside the pore with the film interposed,
Characterization in Therefore permselective osmotic pressure and the coating film film 3 is thought to occur.
【００２１】[0021]
【実施例】以下、本発明の具体的実施例を説明するが、
本発明はこれに限定されるものではない。Hereinafter, specific examples of the present invention will be described.
The present invention is not limited to this.
【００２２】クリーニング排水に本発明の選択性吸着剤
又は従来の吸着剤を適用して、それに含まれるＴＣＥ
（テトラクロロエチレン）を選択的に除去処理した試験
につき説明する。[0022] The selective adsorbent of the present invention or a conventional adsorbent is applied to the cleaning waste water, and the TCE contained therein is applied.
A test in which (tetrachloroethylene) is selectively removed will be described.
【００２３】試水の性状：ＴＯＣ １２０ｍｇ／Ｌ ＴＣＥ ６５ｍｇ／Ｌ 吸着カラム：４．２Ｌ（径１２０ｍｍ×高３８２ｍｍ） 通水条件 ：ＳＶ ０．３ １／ｈ 吸着剤：本発明；石炭系破砕活性炭にＰＥを０．１ｍｍ
コーティング 従来法；石炭系破砕活性炭 上記条件にて実施した結果、は次の通りであった。Properties of test water: TOC 120 mg / L TCE 65 mg / L Adsorption column: 4.2 L (diameter 120 mm × height 382 mm) Water flow conditions: SV 0.3 1 / h Adsorbent: the present invention; coal-based crushed activated carbon 0.1mm PE
Coating Conventional method; Coal-based crushed activated carbon The results obtained under the above conditions were as follows.
【００２４】破過時間：本発明；１２００ｈ，従来法；
２６０ｈ 処理水ＴＯＣ：本発明；１１５ｍｇ／Ｌ、従来法；３２
ｍｇ／Ｌ 処理水ＴＣＥ：本発明；０．０１〜０．１ｍｇ／Ｌ、従
来法；０．０１〜０．１ｍｇ／Ｌ 上記の結果から明らかなように本発明ではＴＯＣはほと
んど除去されないが、ＴＣＥを特異的に除去でき、処理
目標に到達する時間が、従来法の５倍程度長くすること
ができる。Breakthrough time: the present invention; 1200 h, conventional method;
260h Treated water TOC: the present invention; 115 mg / L, conventional method; 32
mg / L Treated water TCE: the present invention; 0.01 to 0.1 mg / L , conventional method; 0.01 to 0.1 mg / L TOC is hardly removed in the present invention as is clear from the above results. However , TCE can be specifically removed, and the time to reach the processing target can be increased by about 5 times as compared with the conventional method.
【００２５】また、吸着済の本発明の選択性吸着剤をフ
ィルムが壊れない温度に昇温することにより吸着物質を
脱着することができるので、従来活性炭と同様な再生が
できる。Further, since the adsorbed substance can be desorbed by raising the temperature of the adsorbed selective adsorbent of the present invention to a temperature at which the film is not broken, regeneration similar to conventional activated carbon can be performed.
【００２６】[0026]
【発明の効果】 本発明の選択性吸着剤は、従来の活
性炭吸着剤に比べ、破過時間を５倍程度に延ばせる。EFFECT OF THE INVENTION The selective adsorbent of the present invention can extend the breakthrough time by about 5 times as compared with the conventional activated carbon adsorbent.
【００２７】 本発明の選択性吸着剤は、従来の活性
炭の特長である「再生」もほぼ同様に可能である。 本発明の選択性吸着剤を使用することにより、各種
水処理、排ガス処理等において処理設計の範囲が広が
り、より効果的な処理ができる。The selective adsorbent of the present invention can perform “regeneration”, which is a feature of conventional activated carbon, in almost the same manner. By using the selective adsorbent of the present invention, the range of treatment design in various types of water treatment, exhaust gas treatment, and the like is expanded, and more effective treatment can be performed.
【図１】本発明の選択性吸着剤の部分切り欠き断面を模
式的に示した図である。FIG. 1 is a diagram schematically showing a partially cutaway cross section of a selective adsorbent of the present invention.
【図２】従来の吸着剤（即ち、活性炭）の部分切り欠き
断面を模式的に示した図である。FIG. 2 is a diagram schematically showing a partially cutaway cross section of a conventional adsorbent (ie, activated carbon).
１ 選択性吸着剤 ２ 活性炭 ３ 選択透過機能を有するフィルム ４ 物質 ５ 物質 ６ 物質 ７ マクロポア ８ ミクロポア DESCRIPTION OF SYMBOLS 1 Selective adsorbent 2 Activated carbon 3 Film having selective permeation function 4 Substance 5 Substance 6 Substance 7 Macropore 8 Micropore
Claims (2)
よび炭素系からなる群から選択された１または複数の吸
着剤の表面に少なくとも有機塩素化合物に対して選択透
過機能を有する高分子化合物の被膜を形成してなる有機
塩素化合物の選択性吸着剤。(1) a silica-based, alumina-based, magnesia-based or
Organic obtained by forming a film of the polymer compound having the permselective function for at least the organic chlorine compounds to one or more surfaces of the intake <br/> Chakuzai selected from the group consisting of carbon-based and
Selective adsorbent for chlorine compounds .
よび炭素系からなる群から選択された１または複数の吸
着剤の表面に少なくとも有機塩素化合物に対して選択透
過機能を有する高分子化合物の被膜を形成してなる選択
性吸着剤を水または気体と接触させ、水中又は気体中に
含まれる物質の内該被膜を通過した有機塩素化合物を吸
着除去することを特徴とする有機塩素化合物の吸着処理
法。2. Silica, alumina, magnesia, etc.
Adsorbent formed by forming a coating of a polymer compound having a selective permeation function on at least an organochlorine compound on the surface of one or more adsorbents selected from the group consisting of carbon and carbon-based adsorbents is contacted with water or gas, adsorption treatment of organochlorine compounds and organic chlorine compounds passing through the inner coating film of the substance contained in the water or gas, characterized in that the suction removal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3141997A JP2587328B2 (en) | 1991-06-13 | 1991-06-13 | Adsorbent and adsorption treatment method for organic chlorine compounds |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3141997A JP2587328B2 (en) | 1991-06-13 | 1991-06-13 | Adsorbent and adsorption treatment method for organic chlorine compounds |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04367722A JPH04367722A (en) | 1992-12-21 |
| JP2587328B2 true JP2587328B2 (en) | 1997-03-05 |
Family
ID=15304991
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3141997A Expired - Lifetime JP2587328B2 (en) | 1991-06-13 | 1991-06-13 | Adsorbent and adsorption treatment method for organic chlorine compounds |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2587328B2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6890373B2 (en) | 2000-06-19 | 2005-05-10 | Bridgestone Corporation | Adsorbents, process for producing the same, and applications thereof |
| FR2843049B1 (en) | 2002-08-01 | 2005-03-25 | Inst Francais Du Petrole | NON-HOMOGENEOUS ADSORBENT AND ITS USE IN DIFFUSIONS SEPARATION PROCESSES |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53125987A (en) * | 1977-04-11 | 1978-11-02 | Kiyoshi Fukui | Adsorbent |
| JPS56141835A (en) * | 1980-04-03 | 1981-11-05 | Honda Motor Co Ltd | Selective adsorbing method, selective adsorbent and selective adsorbing device for urea or the like |
-
1991
- 1991-06-13 JP JP3141997A patent/JP2587328B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04367722A (en) | 1992-12-21 |
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