JP2006281041A - Organic material-containing water treating apparatus and its operation method - Google Patents

Organic material-containing water treating apparatus and its operation method Download PDF

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Publication number
JP2006281041A
JP2006281041A JP2005102032A JP2005102032A JP2006281041A JP 2006281041 A JP2006281041 A JP 2006281041A JP 2005102032 A JP2005102032 A JP 2005102032A JP 2005102032 A JP2005102032 A JP 2005102032A JP 2006281041 A JP2006281041 A JP 2006281041A
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Prior art keywords
ozone
containing water
organic substance
packed bed
gas
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Japanese (ja)
Inventor
Tatsuo Nagai
達夫 永井
Taeko Ushiyama
妙子 牛山
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Kurita Water Industries Ltd
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Kurita Water Industries Ltd
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  • Treatment Of Water By Ion Exchange (AREA)
  • Treatment Of Water By Oxidation Or Reduction (AREA)
  • Water Treatment By Sorption (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide an organic material-containing water treating apparatus and its operation method by which reaction efficiency of ozone can be sufficiently increased when organic material-containing water is treated by ozone and further consumption of active carbon by gaseous ozone can be suppressed to reduce the used amount of active carbon. <P>SOLUTION: The organic material-containing water treating apparatus has an ozone reaction tower in which a gas-liquid mixed flow composed of the organic material-containing water and ozone-containing gas is made to pass upward through an adsorbent packed layer. The adsorbent packed layer comprises an active carbon packed layer and an inorganic adsorbent packed layer which is provided below the active carbon packed layer and composed of an inorganic adsorbent except the active carbon. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

本発明は、有機物含有水処理装置およびその運転方法に関する。さらに詳しくは、本発
明は、有機物含有水をオゾンによって酸化分解させる有機物分解装置およびその運転方法
に関する。
The present invention relates to an organic matter-containing water treatment apparatus and an operation method thereof. More specifically, the present invention relates to an organic substance decomposition apparatus that oxidizes and decomposes organic substance-containing water with ozone and an operation method thereof.

液晶や半導体の製造工程においては、溶解性の無機物や有機物などの不純物を除去し
た超純水が使用されている。例えば、液晶の製造工程では、液晶の洗浄に多量の超純水が
使用されている。地球の環境保全の問題から資源の有効利用に関する要求が高まり、大量
に水を消費してきた液晶工場や半導体工場においても、洗浄排水などを回収し、浄化した
後に再利用に供することが行われつつある。
In the manufacturing process of liquid crystals and semiconductors, ultrapure water from which impurities such as soluble inorganic substances and organic substances are removed is used. For example, in the liquid crystal manufacturing process, a large amount of ultrapure water is used for cleaning the liquid crystal. The demand for effective use of resources has risen due to global environmental conservation problems, and liquid crystal and semiconductor factories that have consumed large amounts of water are recovering cleaning wastewater and purifying it for reuse. is there.

ところで、液晶や半導体等の洗浄工程においては、有機溶剤や非イオン性界面活性剤が
多用されており、これら洗浄工程の排水には有機溶剤、非イオン性界面活性剤などの有機
物が混入している。そのため、これら洗浄排水を再生し液晶や半導体などの製造工程に再
利用するためには、排水中に含有されている有機物を除去する必要がある。
By the way, organic solvents and nonionic surfactants are frequently used in cleaning processes for liquid crystals and semiconductors, and organic substances such as organic solvents and nonionic surfactants are mixed in the wastewater from these cleaning processes. Yes. Therefore, in order to regenerate these washing wastewaters and reuse them for manufacturing processes such as liquid crystals and semiconductors, it is necessary to remove organic substances contained in the wastewater.

近年、有機物を除去する手段の一つとして、オゾンを利用する方法が多く利用されてお
り、反応槽としては、従来より、散気管を用いてオゾンガスを水中に吹き込み、気泡を分
散させることからなる散気管型オゾン接触塔を使用する方法が多く取られてきた。また、
気泡を発生させる他の手段として、回転する翼によりガスを導入するエアレーター方式、
ベンチュリーを利用したエジェクター方式などがある。さらに、オゾンの微細気泡化によ
る汚染水中の有機物除去に適用し得る装置として、円錐形のスペースを有する容器中で液
体を旋回させ、その底部よりガスを導入する旋回式微細気泡発生装置が提案されている(
特許文献1)。しかし、これらの装置を用いても、有機物の酸化分解に利用されるオゾン
の利用効率は十分に高くはならない。
In recent years, ozone is often used as one of the means for removing organic substances, and as a reaction tank, conventionally, ozone gas is blown into water using an air diffuser to disperse bubbles. Many methods using a diffuser tube type ozone contact tower have been taken. Also,
As another means of generating bubbles, an aerator system that introduces gas by rotating blades,
There is an ejector method using a venturi. Furthermore, as a device that can be applied to the removal of organic substances in contaminated water by microbubble formation of ozone, a swirl type microbubble generator that swirls liquid in a container having a conical space and introduces gas from its bottom is proposed. ing(
Patent Document 1). However, even if these apparatuses are used, the utilization efficiency of ozone used for the oxidative decomposition of organic substances is not sufficiently high.

このような問題を解決する装置として、粒状活性炭の充填層と、該充填層の下方に設け
られたオゾン散気装置とを有し、上向流又は下向流で有機物含有水を該充填層に通過する
ようにした有機物含有水処理装置が特許文献2に開示されている。
特開2000−447号公報 特開平5−68983号公報
As an apparatus for solving such a problem, it has a packed bed of granular activated carbon and an ozone diffuser provided below the packed bed, and the organic substance-containing water is supplied in an upward flow or a downward flow. Patent Document 2 discloses an organic substance-containing water treatment apparatus that is allowed to pass through.
JP 2000-447 A JP-A-5-68983

特許文献2に記載された装置は、従来の単なる槽にオゾンを散気して有機物含有水を処
理する方法、装置に比較して、色度やCOD除去率は向上するものの、依然、オゾンの反
応効率は十分には高いものとは言えず、また、活性炭がオゾンによって分解されるため、
頻繁に活性炭を追加しなければならないという問題を有していた。
Although the apparatus described in Patent Document 2 is improved in chromaticity and COD removal rate compared with a conventional method and apparatus for treating organic-containing water by diffusing ozone in a simple tank, The reaction efficiency is not high enough, and activated carbon is decomposed by ozone,
The problem was that the activated carbon had to be added frequently.

本発明は、上記課題を解決した有機物含有水処理装置およびその運転方法を提供するこ
とを目的とする。
An object of this invention is to provide the organic substance containing water treatment apparatus which solved the said subject, and its operating method.

請求項1の有機物含有水処理装置は、有機物含有水とオゾン含有ガスとの気液混合流を
吸着剤充填層に上向流通水させるオゾン反応塔を有し、該吸着剤充填層が活性炭充填層と
該活性炭充填層の下方に設けられた活性炭以外の無機吸着剤からなる無機吸着剤充填層と
を備えることを特徴とする。
The organic matter-containing water treatment apparatus according to claim 1 has an ozone reaction tower that causes a gas-liquid mixed flow of organic matter-containing water and ozone-containing gas to flow upwardly into the adsorbent packed bed, and the adsorbent packed bed is filled with activated carbon. And an inorganic adsorbent packed layer made of an inorganic adsorbent other than the activated carbon provided below the activated carbon packed layer.

請求項2の有機物含有水処理装置は、請求項1において、該オゾン反応塔からの流出水
をイオン交換処理するためのイオン交換手段を有することを特徴とする。
The organic substance-containing water treatment apparatus according to claim 2 is characterized in that, in claim 1, the organic substance-containing water treatment apparatus has ion exchange means for ion exchange treatment of the effluent water from the ozone reaction tower.

請求項3の有機物含有水処理装置は、請求項1または2において、該無機吸着剤がゼオ
ライト及び/又はアパタイトからなることを特徴とする。
The organic substance-containing water treatment apparatus according to claim 3 is characterized in that, in claim 1 or 2, the inorganic adsorbent is made of zeolite and / or apatite.

請求項4の有機物含有水処理装置は、請求項1から3のいずれかにおいて、オゾン含有
ガスは有機物含有水にエジェクタにより注入されるものであることを特徴とする。
According to a fourth aspect of the present invention, there is provided the organic substance-containing water treatment apparatus according to any one of the first to third aspects, wherein the ozone-containing gas is injected into the organic substance-containing water by an ejector.

請求項5の有機物含有水処理装置の運転方法は、請求項1から4いずれかの有機物含有
水処理装置の運転方法であって、オゾン含有ガスを間欠的または連続的に供給することを
特徴とする。
The operation method of the organic substance-containing water treatment apparatus according to claim 5 is the operation method of the organic substance-containing water treatment apparatus according to any one of claims 1 to 4, wherein the ozone-containing gas is supplied intermittently or continuously. To do.

本発明の有機物含有水処理装置およびその運転方法にあっては、オゾンの反応効率を十
分に高くすることができ、さらに、活性炭のオゾンガスによる消耗を抑制し活性炭の使用
量を低減することができる。
In the organic matter-containing water treatment apparatus and its operation method of the present invention, the reaction efficiency of ozone can be sufficiently increased, and further, consumption of activated carbon by ozone gas can be suppressed and the amount of activated carbon used can be reduced. .

以下に本発明の実施の形態を詳細に説明する。   Hereinafter, embodiments of the present invention will be described in detail.

本発明の有機物含有水処理装置は、有機物含有水とオゾン含有ガスとの気液混合流を吸
着剤充填層に上向流通水させる装置であって、該吸着剤充填層が活性炭充填層と該活性炭
充填層の下方に設けられた活性炭以外の無機吸着剤からなる無機吸着剤充填層とを備える
The organic matter-containing water treatment device of the present invention is a device for causing a gas-liquid mixed flow of organic matter-containing water and ozone-containing gas to flow upwardly into an adsorbent packed bed, the adsorbent packed bed being an activated carbon packed bed and the And an inorganic adsorbent packed layer made of an inorganic adsorbent other than the activated carbon provided below the activated carbon packed bed.

本発明が対象とする有機物含有水は、溶解性の有機物を含有するものであれば特に制限
はなく、例えば、液晶や半導体の製造工程で発生する有機物含有水排水に好適に適用する
ことができ、具体的には非イオン界面活性剤や、イソプロピルアルコール、ジメチルスル
ホキシド、テトラメチルアンモニウムヒドロキシドまたはアセトンといった溶剤をTOC
として0.5〜100mg/L程度含有する有機物含有水に好適に用いることができる。
The organic substance-containing water targeted by the present invention is not particularly limited as long as it contains a soluble organic substance. For example, the organic substance-containing water can be suitably applied to organic substance-containing water drainage generated in a liquid crystal or semiconductor manufacturing process. Specifically, a non-ionic surfactant or a solvent such as isopropyl alcohol, dimethyl sulfoxide, tetramethylammonium hydroxide or acetone is used as TOC.
As an organic substance-containing water containing about 0.5 to 100 mg / L.

本発明に用いるオゾン含有ガスの製造方法に特に制限はなく、例えば、除塵、除湿した
空気中で無声放電する方法、酸素ガス中で無声放電する方法、水を電気分解する方法など
を挙げることができる。
There are no particular restrictions on the method for producing the ozone-containing gas used in the present invention, and examples include a method of silent discharge in dust-removed air, a method of silent discharge in oxygen gas, and a method of electrolyzing water. it can.

本発明において、有機物含有水とオゾン含有ガスとの気液混合流の製造手段に特に制限
はなく、オゾン反応塔の下方に設けた散気管によりオゾンガスを有機物含有水に注入する
方法や、オゾン反応塔への有機物含有水供給管にエジェクタを設け該エジェクタにオゾン
含有ガスを供給する方法などを採用することができる。なかでも、エジェクタによりオゾ
ンガスを供給する方法は、簡単な構成で有機物含有水にオゾン含有ガスを注入し気液金剛
流とすることが可能であり好適に用いることができる。
In the present invention, there is no particular limitation on the means for producing a gas-liquid mixed flow of organic substance-containing water and ozone-containing gas, and a method of injecting ozone gas into organic substance-containing water using an air diffuser provided below the ozone reaction tower, or an ozone reaction A method of providing an ejector in the organic substance-containing water supply pipe to the tower and supplying ozone-containing gas to the ejector can be employed. Especially, the method of supplying ozone gas with an ejector can inject | pour ozone-containing gas into organic substance containing water by simple structure, can be used as a gas-liquid gold rigid flow, and can be used suitably.

本発明において使用する活性炭に特に制限はなく、例えば、木炭、果実殻炭、石炭、石
油残差炭化物、合成樹脂炭化物などを原料とするガス賦活炭、のこ屑などの未炭化物を原
料とする薬品賦活炭などを挙げることができ、形状や粒径も特に限定されるものではない
が、例えば孔径1〜5mmの粒状活性炭が好適に用いられる。
There is no restriction | limiting in particular in activated carbon used in this invention, For example, charcoal, fruit husk charcoal, coal, petroleum activated carbide, synthetic carbon charcoal made from activated carbon, raw carbon is used, such as sawdust Although chemical activation charcoal etc. can be mentioned and a shape and a particle size are not specifically limited, For example, granular activated carbon with a hole diameter of 1-5 mm is used suitably.

本発明において使用する無機吸着剤としては、オゾンを吸着し、且つ、有機物含有水に
含有される非イオン性有機物を吸着するものであれば特に制限されるものではないが、特
にオゾンによって劣化(消耗)しないものが好ましく、このような無機吸着剤としては各
種無機酸化物を挙げることができる。具体的にはゼオライト、アパタイト、シリカ、各種
粘土鉱物等を挙げることができるがゼオライトやアパタイトを好適に用いることができ、
これら無機吸着剤を単独あるいは2種以上を混合したものを用いても良い。
The inorganic adsorbent used in the present invention is not particularly limited as long as it adsorbs ozone and adsorbs nonionic organic substances contained in organic substance-containing water. Those that do not wear out are preferred, and examples of such inorganic adsorbents include various inorganic oxides. Specific examples include zeolite, apatite, silica, various clay minerals, etc., but zeolite and apatite can be preferably used.
These inorganic adsorbents may be used alone or in combination of two or more.

更に、本発明において使用する無機吸着剤は、非イオン性有機物を有効に吸着すること
ができるよう多孔体であることが好ましい。
Furthermore, the inorganic adsorbent used in the present invention is preferably a porous body so that it can effectively adsorb nonionic organic substances.

本発明においては、有機物含有水にオゾン含有ガスを供給し、有機物含有水をオゾン含
有ガスとの気液混合流として、活性炭充填層と活性炭以外の無機吸着剤からなる無機吸着
剤充填層とからなる吸着剤充填層に上向流通水することで、吸着剤充填層中においてオゾ
ンによる有機物の酸化反応を行うようにする。これによって、単に有機物含有水中にオゾ
ン含有ガスを散気などの方法によって混合した場合に比較してはるかに高効率で有機物と
オゾンを反応させることができる。すなわち、本発明では無機吸着剤はオゾンと有機物の
両方の吸着作用を有するため、無機吸着剤表面近傍にオゾンと有機物が局在化し、両者の
衝突頻度が高くなりオゾンによる有機物の分解を促進する。
In the present invention, ozone-containing gas is supplied to the organic substance-containing water, and the organic substance-containing water is used as a gas-liquid mixed flow with the ozone-containing gas, from the activated carbon packed bed and the inorganic adsorbent packed bed composed of an inorganic adsorbent other than activated carbon. By flowing upward water into the adsorbent packed bed, the organic substance is oxidized by ozone in the adsorbent packed bed. Accordingly, the organic substance and ozone can be reacted with a much higher efficiency than when the ozone-containing gas is simply mixed in the organic substance-containing water by a method such as aeration. That is, in the present invention, since the inorganic adsorbent has both ozone and organic matter adsorption action, ozone and organic matter are localized near the surface of the inorganic adsorbent, and the collision frequency between the two becomes high and promotes decomposition of organic matter by ozone. .

更に本発明では、吸着剤充填層は、有機物含有水の供給側に無機吸着剤充填層を、有機
物含有水の流出側に活性炭充填層を有するため、上記の有機物のオゾンによる分解は主に
無機吸着剤充填層で行われ、活性炭充填層では有機物含有水中に残留するオゾンの分解の
場として使用される。このため、無機吸着剤層においてはオゾンは活性炭との接触によっ
て余分に消費されることなく、また、活性炭も有機物の分解に消費された後のオゾンを処
理するだけでよく、活性炭のオゾンによる消耗も抑制することができる。
Further, in the present invention, the adsorbent packed bed has an inorganic adsorbent packed bed on the organic substance-containing water supply side and an activated carbon packed bed on the outflow side of the organic substance-containing water. It is carried out in an adsorbent packed bed, and is used as a place for decomposing ozone remaining in organic substance-containing water in an activated carbon packed bed. For this reason, in the inorganic adsorbent layer, ozone is not consumed excessively by contact with activated carbon, and activated carbon is only required to treat ozone after it is consumed for decomposition of organic matter. Can also be suppressed.

本発明において、処理対象とする有機物と使用する無機吸着剤との吸着特性によって無
機吸着剤充填層と活性炭充填層との容積比は適宜決定されるが、SV(空塔速度)=10
Hr-1程度で処理する場合には、吸着速度及び有機物とオゾンの反応時間より経験的に該
容積比は1:1〜3:1程度となる。
In the present invention, the volume ratio between the inorganic adsorbent packed bed and the activated carbon packed bed is appropriately determined depending on the adsorption characteristics between the organic matter to be treated and the inorganic adsorbent used, but SV (superficial velocity) = 10
When processing at about Hr −1 , the volume ratio is about 1: 1 to 3: 1 empirically based on the adsorption rate and the reaction time between the organic matter and ozone.

本発明の有機物含有水処理装置は、さらに後段にイオン交換手段を有することが好まし
い。
The organic matter-containing water treatment apparatus of the present invention preferably further has an ion exchange means in the subsequent stage.

無機吸着剤によって吸着された非イオン性有機物は、オゾンによってイオン化されると
吸着剤の吸着サイトから脱離してオゾン反応塔から流出する。本発明ではオゾン反応塔の
後段にイオン交換手段を設けることにより吸着サイトから脱離した上記イオン性有機物を
吸着除去することができる。また、このようにイオン交換手段を設けることによって、有
機物を二酸化炭素にまで分解せずにイオン化させるだけで十分であるため、添加するオゾ
ン量を低減することが可能となりオゾン発生器を小型化でき、更にはオゾン反応塔の容積
を小さくすることが可能となる。
When the nonionic organic substance adsorbed by the inorganic adsorbent is ionized by ozone, it desorbs from the adsorption site of the adsorbent and flows out of the ozone reaction tower. In the present invention, the ionic organic matter desorbed from the adsorption site can be adsorbed and removed by providing ion exchange means in the subsequent stage of the ozone reaction tower. Further, by providing the ion exchange means in this way, it is sufficient to ionize the organic matter without decomposing it into carbon dioxide. Therefore, the amount of ozone to be added can be reduced, and the ozone generator can be downsized. In addition, the volume of the ozone reaction tower can be reduced.

本発明において使用されるイオン交換手段は、陰イオン交換体が充填されたイオン交換
手段が好適に用いられる。有機物含有水とオゾン含有ガスとの反応により、有機物が酸化
されてカルボキシル基などのアニオン性基が生成する。このようなアニオン性基を有する
有機物を陰イオン交換体で捕捉して、不純物の少ない処理水を得ることができる。使用す
る陰イオン交換体に特に制限はなく、例えば、強塩基性イオン交換樹脂、弱塩基性イオン
交換樹脂のいずれをも用いることができる。これらの中で、トリメチルアンモニウム基を
有する強塩基性イオン交換樹脂を特に好適に用いることができる。本発明においては、こ
れら陰イオン性交換体が充填されておればよく、陽イオン交換体とともに充填した混床式
イオン交換装置を用いても良い。
The ion exchange means used in the present invention is preferably an ion exchange means filled with an anion exchanger. By the reaction between the organic substance-containing water and the ozone-containing gas, the organic substance is oxidized to generate an anionic group such as a carboxyl group. By treating an organic substance having such an anionic group with an anion exchanger, treated water with few impurities can be obtained. There is no restriction | limiting in particular in the anion exchanger to be used, For example, any of strong basic ion exchange resin and weak basic ion exchange resin can be used. Among these, a strongly basic ion exchange resin having a trimethylammonium group can be particularly preferably used. In the present invention, it is sufficient if these anionic exchangers are filled, and a mixed bed ion exchange apparatus filled together with a cation exchanger may be used.

本発明においては、オゾン含有ガスは連続的に供給してもよく、間欠的に供給しても良
い。オゾン含有ガスを連続的に供給する場合には有機物含有水中に含有される有機物量1
重量部に対して2〜5重量部のオゾンを添加することが好ましい。また、有機物含有水中
の有機物量が5mg/L未満の場合にはオゾン含有ガスを間欠的に供給することも可能で
ある。
In the present invention, the ozone-containing gas may be supplied continuously or intermittently. When supplying ozone-containing gas continuously, the amount of organic matter contained in organic matter-containing water 1
It is preferable to add 2 to 5 parts by weight of ozone with respect to parts by weight. Further, when the amount of organic matter in the organic matter-containing water is less than 5 mg / L, ozone-containing gas can be intermittently supplied.

また、本発明においては、有機物含有水に過酸化水素を添加してもよく、その場合の過
酸化水素の好適な添加量は有機物含有水中のTOCによって異なり、TOC1重量部あた
りの過酸化水素の添加量は1〜30重量部とすることが好ましい。
In the present invention, hydrogen peroxide may be added to the organic substance-containing water. In this case, the preferred amount of hydrogen peroxide varies depending on the TOC in the organic substance-containing water, and the amount of hydrogen peroxide per 1 part by weight of TOC. The addition amount is preferably 1 to 30 parts by weight.

図1は、本発明装置の一態様を示す説明図である。有機物含有水1に、オゾン発生装置
2によって発生したオゾン含有ガスがエジェクタ3を介して注入される。オゾン含有ガス
が注入された有機物含有水は、気液混合流となってオゾン反応塔4に供給され、無機吸着
剤充填層6および活性炭充填層7からなる吸着剤充填層5を上向流通液し、主に無機吸着
剤充填層6中においてオゾンにより有機物の酸化反応を行い、活性炭充填層7によって残
留するオゾンを除去する。そして、オゾン反応塔4からの流出水はイオン交換手段8に送
られ、オゾンによってイオン化して無機吸着剤の吸着サイトより脱離したイオン性有機物
がイオン交換手段8で捕捉され、有機性不純物の少ない処理水9となってイオン交換手段
8から流出する。
FIG. 1 is an explanatory view showing one embodiment of the device of the present invention. The ozone-containing gas generated by the ozone generator 2 is injected into the organic substance-containing water 1 through the ejector 3. The organic substance-containing water into which the ozone-containing gas is injected is supplied to the ozone reaction tower 4 as a gas-liquid mixed flow, and flows upward through the adsorbent packed bed 5 including the inorganic adsorbent packed bed 6 and the activated carbon packed bed 7. Then, an organic substance is oxidized by ozone mainly in the inorganic adsorbent packed bed 6, and the remaining ozone is removed by the activated carbon packed bed 7. Then, the effluent water from the ozone reaction tower 4 is sent to the ion exchange means 8, and the ionic organic matter ionized by ozone and desorbed from the adsorption site of the inorganic adsorbent is captured by the ion exchange means 8, and the organic impurities are removed. A small amount of treated water 9 flows out of the ion exchange means 8.

以下に、実施例を挙げて本発明をさらに詳細に説明するが、本発明はこれら実施例によ
りなんら限定されるものではない。
実施例1
ポリオキシエチレンアルキルエーテルを純水に溶解して、TOC濃度20mg/Lの有
機物含有水を調整し、オゾン濃度100mg/Lのオゾン含有ガスを用い図1の装置によ
って以下の条件で有機物含有水を処理した。
Hereinafter, the present invention will be described in more detail with reference to examples, but the present invention is not limited to these examples.
Example 1
Polyoxyethylene alkyl ether is dissolved in pure water to prepare organic substance-containing water with a TOC concentration of 20 mg / L, and organic substance-containing water is prepared under the following conditions using the ozone-containing gas with an ozone concentration of 100 mg / L using the apparatus shown in FIG. Processed.

有機物含有水供給量 :7L/min
オゾン含含有ガス供給量:1L/min

オゾン反応塔 :直径20cm、高さ1.5m
無機吸着剤 :石見鉱山(株)硬質ゼオライト、15L
活性炭 :栗田工業(株)クリコールWG−160、15L
イオン交換塔 :直径20cm、高さ1.5m
アニオン交換樹脂 :ダウケミカルEX−AG、40L
オゾン反応塔出口、イオン交換塔出口でのオゾン濃度およびTOC濃度を表1にまとめ
て示す。
Organic substance-containing water supply: 7 L / min
Ozone-containing gas supply rate: 1 L / min

Ozone reaction tower: diameter 20cm, height 1.5m
Inorganic adsorbent: Hard zeolite, Iwami Mine Co., Ltd., 15L
Activated carbon: Kurita Kogyo Co., Ltd. Cricol WG-160, 15L
Ion exchange tower: diameter 20cm, height 1.5m
Anion exchange resin: Dow Chemical EX-AG, 40L
Table 1 summarizes ozone concentration and TOC concentration at the outlet of the ozone reaction tower and the outlet of the ion exchange tower.

Figure 2006281041
Figure 2006281041

表1に示すとおり、オゾン反応塔からの流出水は十分にオゾンは除去されており、また
、オゾン反応塔からの流出水ではほとんとTOCは除去されていないものの、イオン交換
処理することによって十分にTOCが除去されていることがわかる。
As shown in Table 1, ozone is sufficiently removed from the effluent from the ozone reaction tower, and TOC is not removed in the effluent from the ozone reaction tower, but sufficient by ion exchange treatment. It can be seen that the TOC has been removed.

本発明の有機物含有水処理装置およびその運転方法によれば、有機物含有水を、オゾン
によって分解処理するにあたり、オゾンの使用量を低減させて効率よく処理することがで
きる。また、更にイオン交換手段によって逐次処理することにより、有機物がほぼ除去さ
れた純水を製造することができる。本発明の装置及びその運転方法は、液晶や半導体の製
造工程で発生する有機物含有水を処理して、水を回収して再利用する工程に好適に適用す
ることができる。
According to the organic substance-containing water treatment apparatus and the operation method thereof of the present invention, when the organic substance-containing water is decomposed with ozone, the amount of ozone used can be reduced and efficiently treated. Further, pure water from which organic substances are substantially removed can be produced by further sequential treatment by an ion exchange means. The apparatus of the present invention and the operating method thereof can be suitably applied to a process of treating and collecting water containing organic matter generated in the manufacturing process of liquid crystals and semiconductors.

本発明装置の一態様の説明図である。It is explanatory drawing of the one aspect | mode of this invention apparatus.

符号の説明Explanation of symbols

1 有機物含有水
2 オゾン発生装置
3 エジェクタ
4 オゾン反応塔
5 吸着剤充填層
6 無機吸着剤充填層
7 活性炭充填層
8 イオン交換手段
9 処理水
DESCRIPTION OF SYMBOLS 1 Organic substance containing water 2 Ozone generator 3 Ejector 4 Ozone reaction tower 5 Adsorbent packed bed 6 Inorganic adsorbent packed bed 7 Activated carbon packed bed 8 Ion exchange means 9 Treated water

Claims (5)

有機物含有水とオゾン含有ガスとの気液混合流を吸着剤充填層に上向流通水させるオゾ
ン反応塔を有し、
該吸着剤充填層が活性炭充填層と該活性炭充填層の下方に設けられた活性炭以外の無機
吸着剤からなる無機吸着剤充填層とを備えることを特徴とする有機物含有水処理装置。
It has an ozone reaction tower that causes a gas-liquid mixed flow of organic substance-containing water and ozone-containing gas to flow upwardly into the adsorbent packed bed,
An organic substance-containing water treatment apparatus, wherein the adsorbent packed bed includes an activated carbon packed bed and an inorganic adsorbent packed bed made of an inorganic adsorbent other than activated carbon provided below the activated carbon packed bed.
請求項1において、
更に、該オゾン反応塔からの流出水をイオン交換処理するためのイオン交換手段を有す
ることを特徴とする有機物含有水処理装置。
In claim 1,
Furthermore, the organic substance containing water treatment apparatus characterized by having an ion exchange means for ion-exchange-treating the effluent from the ozone reaction tower.
請求項1または2において、
該無機吸着剤がゼオライト及び/又はアパタイトからなることを特徴とする有機物含有
水処理装置。
In claim 1 or 2,
An organic matter-containing water treatment apparatus, wherein the inorganic adsorbent comprises zeolite and / or apatite.
請求項1から3のいずれかにおいて、
オゾン含有ガスは有機物含有水にエジェクタにより注入されるものであることを特徴と
する有機物含有水処理装置。
In any one of Claim 1 to 3,
An organic substance-containing water treatment apparatus, wherein the ozone-containing gas is injected into the organic substance-containing water by an ejector.
請求項1から4いずれかに記載の有機物含有水処理装置の運転方法であって、
該オゾン含有ガスを間欠的または連続的に供給することを特徴とする有機物含有水処理
装置の運転方法。




























It is the operating method of the organic substance containing water treatment apparatus in any one of Claim 1 to 4, Comprising:
A method for operating an organic matter-containing water treatment apparatus, wherein the ozone-containing gas is supplied intermittently or continuously.




























JP2005102032A 2005-03-31 2005-03-31 Organic material-containing water treating apparatus and its operation method Pending JP2006281041A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101078702B1 (en) * 2009-02-06 2011-11-01 이용무 High degree water cleaning equipment for reducing toxicity at the ecology of water
CN104085977A (en) * 2014-06-10 2014-10-08 南京德磊科技有限公司 Packed catalytic reaction column

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11104618A (en) * 1997-09-30 1999-04-20 Mitsubishi Heavy Ind Ltd Method and apparatus for treating polluted water containing harmful substance
JP2000061453A (en) * 1998-08-25 2000-02-29 Nomura Micro Sci Co Ltd Treatment of water and apparatus therefor

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH11104618A (en) * 1997-09-30 1999-04-20 Mitsubishi Heavy Ind Ltd Method and apparatus for treating polluted water containing harmful substance
JP2000061453A (en) * 1998-08-25 2000-02-29 Nomura Micro Sci Co Ltd Treatment of water and apparatus therefor

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101078702B1 (en) * 2009-02-06 2011-11-01 이용무 High degree water cleaning equipment for reducing toxicity at the ecology of water
CN104085977A (en) * 2014-06-10 2014-10-08 南京德磊科技有限公司 Packed catalytic reaction column
CN104085977B (en) * 2014-06-10 2015-12-30 南京德磊科技有限公司 A kind of filler catalytic tower

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