JP2003080276A - Method for treating hard-to-decompose organic substance - Google Patents
Method for treating hard-to-decompose organic substanceInfo
- Publication number
- JP2003080276A JP2003080276A JP2001279887A JP2001279887A JP2003080276A JP 2003080276 A JP2003080276 A JP 2003080276A JP 2001279887 A JP2001279887 A JP 2001279887A JP 2001279887 A JP2001279887 A JP 2001279887A JP 2003080276 A JP2003080276 A JP 2003080276A
- Authority
- JP
- Japan
- Prior art keywords
- catalyst
- hardly decomposable
- treatment
- oxidizing agent
- organic substance
- 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
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/584—Recycling of catalysts
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、排水に含まれるダ
イオキシン類、界面活性剤などに代表される難分解性有
機物を処理する方法に関するものである。TECHNICAL FIELD The present invention relates to a method for treating a hardly decomposable organic substance represented by dioxins, surfactants and the like contained in waste water.
【０００２】[0002]
【従来の技術】従来の難分解性有機物を含む有害排水の
処理方法として、凝集処理、オゾン処理、促進酸化処
理、活性炭処理などが知られている。2. Description of the Related Art Conventional coagulation treatment, ozone treatment, accelerated oxidation treatment, activated carbon treatment and the like are known as treatment methods for harmful waste water containing hardly decomposable organic substances.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、凝集沈
殿法は固形分の難分解性物質は効率的に除去できるが、
溶解性難分解性有機物は単位スラッジ量あたりの除去可
能な有機物量が少なく、多量のスラッジが発生するとい
う欠点がある。オゾン処理、促進酸化処理は、オゾンの
発生装置や紫外線照射のためのコストが高額であるとい
う欠点があり、固形分に対しては除去性能が劣る。活性
炭処理は、吸着した難分解性物質を改めて処理をしなけ
ればならないために、効率的に難分解性物質の処理を行
うことが困難であった。However, although the coagulation sedimentation method can efficiently remove the solid-content hardly-decomposable substance,
Soluble and hardly decomposable organic substances have a drawback that the amount of removable organic substances per unit amount of sludge is small and a large amount of sludge is generated. The ozone treatment and the accelerated oxidation treatment have the drawback that the cost for the ozone generator and the ultraviolet irradiation is high, and the removal performance for solids is inferior. In the activated carbon treatment, it is difficult to efficiently treat the hardly decomposable substance because the adsorbed hardly decomposable substance has to be treated again.
【０００４】本発明は、上述したような問題点を解決す
るためになされたものであり、排水中のダイオキシン
類、界面活性剤などに代表される難分解性有機物を効率
よく処理する方法に関するものである。The present invention has been made to solve the above-mentioned problems, and relates to a method for efficiently treating hardly decomposable organic substances represented by dioxins and surfactants in waste water. Is.
【０００５】[0005]
【課題を解決するための手段】本発明者らは、上記課題
を解決するために鋭意検討した結果、過酸化ニッケルを
主成分とする触媒によって難分解性有機物を効率よく処
理できることを見出し、本発明に到達した。Means for Solving the Problems As a result of intensive studies for solving the above-mentioned problems, the present inventors have found that a catalyst containing nickel peroxide as a main component can efficiently treat a persistent organic substance. The invention was reached.
【０００６】すなわち、本発明の第一は、難分解性有機
物を含有する排水から固形分を除去し、次いで過酸化ニ
ッケルを主成分とする触媒と酸化剤の共存下で接触させ
て難分解性有機物を無害化することを特徴とする難分解
性有機物の処理方法を要旨とするものである。ここで、
難分解性有機物を含有する排水から固形分を除去する方
法としては、ろ過処理、膜処理又は凝集処理のうちの１
又は２以上の方法が好ましい。That is, the first aspect of the present invention is to remove solids from wastewater containing a persistent organic substance, and then contact the catalyst containing nickel peroxide as a main component and an oxidizing agent in the presence of an oxidizing agent. The gist is a method for treating a hardly decomposable organic substance, which is characterized by detoxifying an organic substance. here,
As a method for removing the solid content from the wastewater containing the hardly decomposable organic matter, one of filtration treatment, membrane treatment or coagulation treatment is used.
Alternatively, two or more methods are preferable.
【０００７】本発明の第二は、過酸化ニッケルを主成分
とする触媒を、酸化剤を含有する溶液に浸漬することを
特徴とする該触媒の再生方法を要旨とするものである。The second aspect of the present invention is summarized as a method for regenerating a catalyst having nickel peroxide as a main component, which is characterized by immersing the catalyst in a solution containing an oxidizing agent.
【０００８】[0008]
【発明の実施の態様】以下、本発明を詳細に説明する。
本発明において、難分解性有機物とは、ダイオキシン
類、界面活性剤などを挙げることができ、これらは従来
の処理方法では分解されにくいものである。本発明の処
理方法が適用できる排水は、このような難分解性有機物
を１種以上含むものであり、焼却場の洗煙施設、埋立処
分場、化学工場などから発生するものである。BEST MODE FOR CARRYING OUT THE INVENTION The present invention is described in detail below.
In the present invention, examples of the hardly decomposable organic substance include dioxins and surfactants, which are hardly decomposed by conventional treatment methods. The wastewater to which the treatment method of the present invention can be applied contains one or more kinds of such hardly decomposable organic substances, and is generated from a smoke washing facility of an incinerator, a landfill disposal site, a chemical factory, or the like.
【０００９】本発明において過酸化ニッケルとは、三二
酸化ニッケル水和物の単独物又は三二酸化ニッケル水和
物と二酸化ニッケル水和物との混合物をいう。三二酸化
ニッケル水和物と二酸化ニッケル水和物との混合物の場
合、混合割合としては、二酸化ニッケルの割合が３０質
量％以下が好ましく、１０質量％以下がさらに好まし
い。In the present invention, nickel peroxide refers to a hydrate of nickel trioxide or a mixture of a hydrate of nickel trioxide and a hydrate of nickel dioxide. In the case of a mixture of nickel trioxide hydrate and nickel dioxide hydrate, the proportion of nickel dioxide is preferably 30% by mass or less, more preferably 10% by mass or less.
【００１０】本発明で用いられる過酸化ニッケルを主成
分とする触媒とは、上記した過酸化ニッケルを主成分と
して含む触媒であり、過酸化ニッケル以外に含まれる成
分としては、成形を容易にするためのセメント、焼石
膏、繊維成分などが挙げられる。触媒中の過酸化ニッケ
ルの含有量としては、２０質量％〜８０質量％が好まし
く、成形の容易性及び反応効率の観点から３０質量％〜
６５質量％がさらに好ましい。The catalyst containing nickel peroxide as a main component used in the present invention is a catalyst containing nickel peroxide as a main component, and components other than nickel peroxide facilitate the molding. For example, cement, calcined gypsum, fiber components and the like. The content of nickel peroxide in the catalyst is preferably 20% by mass to 80% by mass, and from the viewpoint of ease of molding and reaction efficiency, 30% by mass to
65 mass% is more preferable.
【００１１】触媒の形状としては、粉体、球形、ペレッ
ト、板状などがあり、排水との接触の形式により適宜選
択することができる。例えば、反応塔を用いた連続式の
場合、取り扱い及び接触効率の観点から、径が１〜２０
ｍｍ程度のペレットもしくは球形が望ましい。このよう
な触媒は市販されているものを用いることもできる。The shape of the catalyst may be powder, sphere, pellet, plate, etc., and can be appropriately selected depending on the form of contact with the waste water. For example, in the case of a continuous system using a reaction tower, the diameter is 1 to 20 from the viewpoint of handling and contact efficiency.
A pellet or spherical shape of about mm is desirable. As such a catalyst, a commercially available one may be used.
【００１２】本発明においては、難分解性有機物を含有
する排水と上記した触媒とを接触させて難分解性有機物
を無害化するのであるが、その際、酸化剤を共存させる
ことが必要である。ここで用いられる酸化剤としては、
次亜塩素酸塩、過酸化水素などが挙げられる。処理され
る排水のＣＯＤにより、共存させる酸化剤の量を決定す
ることができ、具体的にはＣＯＤの０．８〜３倍等量が
好ましく、触媒の再生頻度及び経済性の観点から、１〜
２倍等量がさらに好ましい。In the present invention, the wastewater containing the hardly-decomposable organic substance is brought into contact with the above-mentioned catalyst to render the hardly-decomposable organic substance harmless. At that time, it is necessary to make an oxidizing agent coexist. . As the oxidant used here,
Examples include hypochlorite and hydrogen peroxide. The amount of the oxidizing agent to be coexisted can be determined by the COD of the wastewater to be treated. Specifically, 0.8 to 3 times the equivalent amount of COD is preferable, and from the viewpoint of the regeneration frequency and economic efficiency of the catalyst, 1 ~
A double equivalent is more preferable.
【００１３】本発明の化学反応式を、一例として、酸化
剤に次亜塩素酸塩を使用した場合について以下に示す。
Ｎｉ2Ｏ3＋ＮａＣｌＯ→２ＮｉＯ2＋ＮａＣｌ
２ＮｉＯ2＋ＮａＣｌＯ→Ｎｉ2Ｏ3＋ＮａＣｌ＋２Ｏ
このように、過酸化ニッケルと次亜塩素酸塩が反応し、
活性酸素を放出する。この反応式に示した４価のニッケ
ル酸化物ＮｉＯ2および活性酸素は、難分解性有機物を
強力に酸化分解するものである。この触媒の触媒作用に
よって、排水に含有する溶解性難分解性物質を分解して
無害な有機物に変換、あるいは、溶解性難分解性物質を
二酸化炭素と水に完全に酸化することが可能となる。As an example, the chemical reaction formula of the present invention is shown below when hypochlorite is used as the oxidizing agent. Ni 2 O 3 + NaClO → 2NiO 2 + NaCl 2NiO 2 + NaClO → Ni 2 O 3 + NaCl + 2O Thus, nickel peroxide and hypochlorite react,
Releases active oxygen. The tetravalent nickel oxide NiO 2 and active oxygen shown in this reaction formula strongly oxidize and decompose the hardly decomposable organic substance. By the catalytic action of this catalyst, it becomes possible to decompose soluble hardly decomposable substances contained in wastewater and convert them into harmless organic substances, or completely oxidize soluble hardly decomposable substances into carbon dioxide and water. .
【００１４】過酸化ニッケルは、酸に溶解するため、ｐ
Ｈは５以上で運転を行うことが望ましい。また、溶解性
難分解性物質の分解は、５分程度で終了するが、処理の
安定のために排水と触媒の接触時間は、１５分以上とす
ることが望ましい。また、溶解性難分解性物質の分解
は、常温で充分に進行するが、過酸化ニッケルが、変質
しない限りは、多少温度を高くすることによって反応を
促進することができるため、室温〜９０℃程度の範囲が
望ましい。Since nickel peroxide dissolves in an acid, p
It is desirable to operate at H of 5 or more. Further, although the decomposition of the soluble and hardly decomposable substance is completed in about 5 minutes, it is desirable that the contact time between the waste water and the catalyst is 15 minutes or more in order to stabilize the treatment. Further, the decomposition of the soluble hardly decomposable substance proceeds sufficiently at room temperature, but unless the nickel peroxide is deteriorated, the reaction can be promoted by raising the temperature to some extent, so that the temperature is from room temperature to 90 ° C. A range of degrees is desirable.
【００１５】排水と触媒とを接触させる形式としては、
反応塔に触媒を充填し、排水を流下させる形式、反応槽
に触媒を添加して攪拌する形式など特に限定されない
が、処理効率の点から、反応塔を用いた連続処理が好ま
しい。酸化剤は、反応装置の原水槽若しくは反応装置に
直接添加するが、排水の性状によっては原水槽内で酸化
剤が消費される場合が考えられるため、反応装置に直接
添加する方法が好ましい。As a form of contacting the waste water and the catalyst,
The method of filling the reaction tower with the catalyst and flowing the waste water, the method of adding the catalyst to the reaction tank and stirring the method are not particularly limited, but continuous processing using the reaction tower is preferable from the viewpoint of processing efficiency. The oxidizing agent is added directly to the raw water tank of the reaction apparatus or to the reaction apparatus. However, the oxidizing agent may be consumed in the raw water tank depending on the properties of the waste water, so the method of adding directly to the reaction apparatus is preferable.
【００１６】本発明においては、排水と触媒とを接触さ
せるに先立ち、あらかじめ排水中の固形分を除去してお
くことが必要である。その方法は特に限定されないが、
ろ過処理、膜処理又は凝集処理が採用できる。ろ過処理
としては、従来から知られている方法でよく、例えば、
砂ろ過、繊維ろ過などが挙げられる。膜処理としては、
従来から知られている方法でよく、例えば、精密ろ過膜
や限外ろ過膜を使用する方法が挙げられる。凝集処理と
しては、従来から知られている方法でよく、例えば、高
分子凝集剤によって排水中の固形分を凝集沈殿する方法
が挙げられる。これらの中で、排水の性状によって、最
も有利なものを選択すればよい。In the present invention, it is necessary to remove the solid content in the waste water in advance before contacting the waste water with the catalyst. The method is not particularly limited,
Filtration treatment, membrane treatment or aggregation treatment can be adopted. The filtration process may be a conventionally known method, for example,
Examples include sand filtration and fiber filtration. For membrane treatment,
A conventionally known method may be used, for example, a method using a microfiltration membrane or an ultrafiltration membrane. The coagulation treatment may be a conventionally known method, for example, a method of coagulating and precipitating a solid content in wastewater with a polymer coagulant. Among these, the most advantageous one may be selected depending on the property of drainage.
【００１７】除去された固形分は、系外にて別途処理を
行ってもよいし、酸・アルカリ等で処理して固形の難分
解性有機物を溶出させ、上記したように過酸化ニッケル
を主成分とする触媒により処理を行ってもよい。The removed solid content may be separately treated outside the system, or may be treated with an acid or an alkali to elute the solid hardly decomposable organic matter, and the nickel peroxide is mainly used as described above. The treatment may be performed with a catalyst as a component.
【００１８】以下、図面を参照して本発明を説明する。
図１は、本発明の処理方法が適用される処理装置の一例
を示す概略フロー図であり、固形分除去方法としてろ過
処理を採用している。図示するように、排水１はろ過塔
２に導入され、固形物を除去した後、反応塔３に導入さ
れる。反応塔３では、過酸化ニッケルを主成分とする触
媒４が充填され、酸化剤として次亜塩素酸ソーダ５を添
加している。反応塔３に導入された排水１に含有してい
る難分解性有機物は、反応塔内で上記の化学式に示した
反応により分解される。触媒作用が低下した場合には、
反応塔に空気を吹き込んで触媒表面に堆積した固形分を
除去して、塔外に排出した後、酸化剤に浸漬すればよ
い。The present invention will be described below with reference to the drawings.
FIG. 1 is a schematic flow chart showing an example of a treatment apparatus to which the treatment method of the present invention is applied, and a filtration treatment is adopted as a solid content removing method. As shown in the figure, the waste water 1 is introduced into the filtration tower 2 and, after removing the solid matter, is introduced into the reaction tower 3. The reaction tower 3 is filled with a catalyst 4 containing nickel peroxide as a main component, and sodium hypochlorite 5 is added as an oxidant. The hardly decomposable organic matter contained in the waste water 1 introduced into the reaction tower 3 is decomposed by the reaction shown in the above chemical formula in the reaction tower. If the catalytic activity decreases,
Air may be blown into the reaction tower to remove the solid content deposited on the surface of the catalyst, and the solid matter may be discharged to the outside of the tower and then immersed in an oxidizing agent.
【００１９】本発明の第二は、過酸化ニッケルを主成分
とする触媒を、酸化剤を含有する溶液に浸漬することを
特徴とする該触媒の再生方法である。本発明の難分解性
有機物の処理方法を行うことによって触媒作用が低下し
た場合には、酸化剤を含有する溶液に浸漬することで再
生を行うことができる。触媒作用が低下する原因として
は、触媒表面への固形分堆積および酸化剤の添加不足に
よる触媒機能の損失があげられる。触媒表面への固形分
の堆積については、空気の吹き込みや水の逆流操作によ
る洗浄によって、ほぼ除去できる。触媒表面に固着した
固形分は、酸化剤の添加により分解することができる。
また、この操作により、酸化剤の添加不足による触媒機
能の損失も回復できる。A second aspect of the present invention is a method for regenerating the catalyst, which comprises immersing a catalyst containing nickel peroxide as a main component in a solution containing an oxidant. When the catalytic activity is lowered by carrying out the method for treating a hardly decomposable organic substance of the present invention, the regeneration can be carried out by immersing it in a solution containing an oxidizing agent. The cause of the decrease in the catalytic action is the loss of the catalytic function due to the accumulation of solids on the surface of the catalyst and the insufficient addition of the oxidizing agent. The accumulation of solids on the surface of the catalyst can be almost eliminated by blowing air or washing by backwashing with water. The solid content fixed on the catalyst surface can be decomposed by adding an oxidizing agent.
Further, by this operation, the loss of the catalytic function due to the insufficient addition of the oxidizing agent can be recovered.
【００２０】使用される酸化剤としては、触媒との接触
時に共存させる酸化剤が同様に挙げられる。溶液中の酸
化剤の濃度としては、例えば、次亜塩素酸ソーダを使用
する場合には、２〜７質量％程度が望ましい。浸漬時間
は、１５分以上が望ましい。The oxidizing agent to be used may be the same as the oxidizing agent to be coexisted at the time of contact with the catalyst. The concentration of the oxidizing agent in the solution is preferably about 2 to 7 mass% when sodium hypochlorite is used, for example. The immersion time is preferably 15 minutes or longer.
【００２１】[0021]
【実施例】以下、実施例により具体例に説明する。
実施例１
焼却設備から発生した洗煙排水２種について、以下のよ
うにしてダイオキシンを処理した。排水を孔径１μｍの
ガラス繊維ろ紙によりろ過後、ガラス製容器に入れ、そ
こに粉末状二三酸化ニッケル水和物を主成分とする触媒
（有恒金属株式会社製、商品名「パニオンＳＡ」、二三
酸化ニッケル水和物を４６．８％以上含有）を、排水１
リットルあたり２０ｇの割合で添加した。次いで、ろ過
後の排水のＣＯＤ（排水１：１６ｍｇ／リットル、排水
２：２２ｍｇ／リットル）相当分の次亜塩素酸ソーダを
添加し、１時間攪拌した。その後、触媒と被処理水をろ
過して分離し、処理水を得た。原水および処理水中のダ
イオキシン濃度を表１に示す。EXAMPLES Specific examples will be described below with reference to examples. Example 1 Dioxins were treated as follows for two types of smoke washing wastewater generated from an incinerator. The waste water is filtered through a glass fiber filter paper having a pore size of 1 μm, and then placed in a glass container, in which a catalyst containing powdered nickel trioxide hydrate as a main component (trade name “Panion SA”, manufactured by Arihitsu Metal Co., Ltd., Ni Containing 46.8% or more of nickel trioxide hydrate), drainage 1
It was added at a rate of 20 g per liter. Then, sodium hypochlorite in an amount corresponding to COD (wastewater 1:16 mg / liter, wastewater 2:22 mg / liter) of the wastewater after filtration was added and stirred for 1 hour. Then, the catalyst and the water to be treated were filtered and separated to obtain treated water. Table 1 shows the dioxin concentrations in the raw water and the treated water.
【００２２】[0022]
【表１】 [Table 1]
【００２３】表1に示したように、触媒を添加して難分
解性有機物を分解する本発明により、処理水中のダイオ
キシン濃度を著しく減少させることができた。As shown in Table 1, the present invention in which a catalyst is added to decompose the hardly-decomposable organic matter was able to significantly reduce the dioxin concentration in the treated water.
【００２４】実施例２
界面活性剤を含む排水について、接触時間を３０分とし
た以外は実施例１と全く同様にして処理を行った。原水
および処理水のＣＯＤ濃度を表2に示す。Example 2 Wastewater containing a surfactant was treated in exactly the same manner as in Example 1 except that the contact time was 30 minutes. Table 2 shows the COD concentrations of raw water and treated water.
【００２５】[0025]
【表２】 [Table 2]
【００２６】表２に示したように、触媒を添加して難分
解性有機物を分解する本発明により、処理水中のＣＯＤ
濃度を著しく減少させることができた。As shown in Table 2, according to the present invention, in which a hardly decomposable organic substance is decomposed by adding a catalyst, COD in treated water is obtained.
The concentration could be reduced significantly.
【００２７】[0027]
【発明の効果】本発明によれば、排水中に含有される溶
解性のダイオキシン類や環境ホルモン等の難分解性物質
を効率的に、しかも低コストで除去することが可能とな
る。EFFECTS OF THE INVENTION According to the present invention, it becomes possible to efficiently remove the hardly decomposable substances such as soluble dioxins and environmental hormones contained in the waste water at low cost.
【図１】本発明の処理方法が適用される処理装置の一例
を示す概略フロー図である。FIG. 1 is a schematic flow chart showing an example of a processing apparatus to which a processing method of the present invention is applied.
１ 排水 ２ ろ過塔 ３ 反応塔 ４ 触媒 ６ 処理水 1 drainage 2 filtration tower 3 reaction tower 4 catalyst 6 treated water
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ テーマコート゛(参考） Ｃ０７Ｄ 319/24 Ｃ０７Ｄ 319/24 // Ｃ０２Ｆ 1/00 Ｃ０２Ｆ 1/00 Ｌ Ｆターム(参考） 4D006 GA02 KA71 KB30 PB08 4D015 BA23 CA01 FA24 4D050 AA12 AB02 AB19 BB06 BB09 CA09 CA15 4G069 AA10 BB20A BB20B BC68A BC68B CA05 CA10 CA11 DA05 GA14 ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 7 identification code FI theme code (reference) C07D 319/24 C07D 319/24 // C02F 1/00 C02F 1/00 LF term (reference) 4D006 GA02 KA71 KB30 PB08 4D015 BA23 CA01 FA24 4D050 AA12 AB02 AB19 BB06 BB09 CA09 CA15 4G069 AA10 BB20A BB20B BC68A BC68B CA05 CA10 CA11 DA05 GA14
Claims (3)
分を除去し、次いで過酸化ニッケルを主成分とする触媒
と酸化剤の共存下で接触させて難分解性有機物を無害化
することを特徴とする難分解性有機物の処理方法。1. A method for detoxifying a hardly decomposable organic substance by removing solids from wastewater containing a hardly decomposable organic substance, and then contacting the catalyst mainly containing nickel peroxide with an oxidizing agent in the presence of the solid substance. A characteristic method for treating persistent organic substances.
分を除去する方法が、ろ過処理、膜処理又は凝集処理の
うちの１又は２以上の方法である請求項１記載の難分解
性有機物の処理方法。2. The hardly decomposable organic matter according to claim 1, wherein the method for removing solids from the wastewater containing the hardly decomposable organic matter is one or more of a filtration treatment, a membrane treatment and an aggregation treatment. Processing method.
酸化剤を含有する溶液に浸漬することを特徴とする該触
媒の再生方法。3. A catalyst containing nickel peroxide as a main component,
A method for regenerating the catalyst, which comprises immersing the catalyst in a solution containing an oxidizing agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001279887A JP2003080276A (en) | 2001-09-14 | 2001-09-14 | Method for treating hard-to-decompose organic substance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001279887A JP2003080276A (en) | 2001-09-14 | 2001-09-14 | Method for treating hard-to-decompose organic substance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003080276A true JP2003080276A (en) | 2003-03-18 |
Family
ID=19103983
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001279887A Pending JP2003080276A (en) | 2001-09-14 | 2001-09-14 | Method for treating hard-to-decompose organic substance |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003080276A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010167398A (en) * | 2008-12-22 | 2010-08-05 | Tosoh Corp | Cod removal method and cod decomposition catalyst packed tower |
| CN101844828A (en) * | 2010-05-27 | 2010-09-29 | 南京工业大学 | Treating method for efficiently catalyzing and oxidizing chlor-alkali industrial waste water |
| CN102992468A (en) * | 2012-11-27 | 2013-03-27 | 常州大学 | Method for treating chlorine-containing waste water through catalytic oxidation |
| JPWO2016092620A1 (en) * | 2014-12-08 | 2017-08-03 | 三菱重工業株式会社 | Water treatment equipment |
| CN115814798A (en) * | 2022-09-21 | 2023-03-21 | 宁波九胜创新医药科技有限公司 | Supported nano nickel sesquioxide catalyst and preparation method thereof |
-
2001
- 2001-09-14 JP JP2001279887A patent/JP2003080276A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010167398A (en) * | 2008-12-22 | 2010-08-05 | Tosoh Corp | Cod removal method and cod decomposition catalyst packed tower |
| CN101844828A (en) * | 2010-05-27 | 2010-09-29 | 南京工业大学 | Treating method for efficiently catalyzing and oxidizing chlor-alkali industrial waste water |
| CN102992468A (en) * | 2012-11-27 | 2013-03-27 | 常州大学 | Method for treating chlorine-containing waste water through catalytic oxidation |
| JPWO2016092620A1 (en) * | 2014-12-08 | 2017-08-03 | 三菱重工業株式会社 | Water treatment equipment |
| CN115814798A (en) * | 2022-09-21 | 2023-03-21 | 宁波九胜创新医药科技有限公司 | Supported nano nickel sesquioxide catalyst and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8562828B2 (en) | Wastewater treatment apparatus | |
| CN1275883C (en) | Process for water supply deep treatment of catalyzing ozone oxydation by hydroxy ferric oxide as catalyst | |
| JP4933734B2 (en) | Treatment of water containing persistent substances | |
| WO2005070833A1 (en) | Method for treating raw water containing hardly decomposable substance | |
| JP2007021347A (en) | Hardly decomposable substance-containing water treatment method | |
| JP2007509740A (en) | Apparatus and method for purifying aqueous effluents by oxidation and membrane filtration | |
| JP2006239507A (en) | Organic arsenic compound-containing water treatment method and apparatus | |
| JP5198648B2 (en) | Treatment of water containing persistent substances | |
| JP2003080276A (en) | Method for treating hard-to-decompose organic substance | |
| JP3950923B2 (en) | Water purification method and system | |
| JPH10277568A (en) | Treatment of organic matter-containing waste water | |
| JP2004243162A (en) | Method and apparatus for treating hardly decomposable organic matter-containing liquid | |
| JP3766298B2 (en) | Wastewater treatment method and apparatus | |
| JP3362840B2 (en) | Treatment method and treatment device for wastewater containing hydrogen peroxide | |
| JP2001038348A (en) | Water cleaning method and device | |
| JP2603895B2 (en) | Treatment of hypophosphite ions in plating aging solution | |
| JP4522302B2 (en) | Detoxification method of organic arsenic | |
| JP2003080274A (en) | Treatment method and equipment for sewage | |
| JP2749256B2 (en) | Advanced water treatment method | |
| JP2001054798A (en) | Method and apparatus for treating harmful material in sewage | |
| JP2003001272A (en) | Method for removing manganese | |
| JP3529318B2 (en) | Organic wastewater treatment method | |
| JP2000185289A (en) | Waste water treatment method and apparatus | |
| JP2000263049A (en) | Method and apparatus for cleaning barn effluent | |
| JP2008264727A (en) | Method for decomposing hardly decomposable harmful material |