JPH09253627A - Phosphorus-removing material and phosphorus-removing method using the same - Google Patents
Phosphorus-removing material and phosphorus-removing method using the sameInfo
- Publication number
- JPH09253627A JPH09253627A JP9201596A JP9201596A JPH09253627A JP H09253627 A JPH09253627 A JP H09253627A JP 9201596 A JP9201596 A JP 9201596A JP 9201596 A JP9201596 A JP 9201596A JP H09253627 A JPH09253627 A JP H09253627A
- Authority
- JP
- Japan
- Prior art keywords
- fiber
- phosphorus
- metal
- metal fiber
- iron
- 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.)
- Granted
Links
Landscapes
- Removal Of Specific Substances (AREA)
- Water Treatment By Sorption (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、河川、湖沼、海、
生活排水、工業排水などに含まれる富栄養化の原因のひ
とつであるリン成分を除去するためのリン除去材に関
し、とくに金属イオンを生成することにより、リン成分
を不溶性のリン−金属化合物として析出させて除去する
リン除去材に関する。TECHNICAL FIELD The present invention relates to rivers, lakes, seas,
Regarding a phosphorus removal material for removing the phosphorus component that is one of the causes of eutrophication contained in domestic wastewater, industrial wastewater, etc., especially by producing metal ions, the phosphorus component is precipitated as an insoluble phosphorus-metal compound The present invention relates to a phosphorus removing material that is removed by the above method.
【０００２】[0002]
【従来の技術】従来、鉄板をリン成分を含む被処理水に
浸漬することにより、鉄板表面の電気化学的鉄腐食作用
で鉄イオンを溶出させて、リン成分、とくにリン酸イオ
ンを鉄イオンとの反応によって不溶性リン酸鉄塩として
析出させ、これを被処理水から取り除くことによってリ
ンを除去する方法が知られている。しかし、この方法で
は鉄イオンの溶出量が少なく、また溶出速度も遅いた
め、リン濃度の高い水域や、リン濃度が変動する水域で
は十分にリンが除去できなかった。2. Description of the Related Art Conventionally, by immersing an iron plate in water to be treated containing a phosphorus component, the iron ion is eluted by an electrochemical iron corrosion action on the surface of the iron plate, so that the phosphorus component, especially the phosphate ion A method is known in which phosphorus is removed by precipitating as an insoluble iron phosphate salt by the reaction of 1 and removing it from the water to be treated. However, in this method, the amount of iron ions eluted was small and the elution rate was slow, so that phosphorus could not be sufficiently removed in water areas with high phosphorus concentrations or water areas with varying phosphorus concentrations.
【０００３】また、浸漬した鉄板を荷電して鉄イオンの
溶出量を増加させる方法も提案されているが、この方法
では通電が必要となるため、ランニングコストが高く、
運転管理も面倒であった。A method has also been proposed in which the immersed iron plate is charged to increase the elution amount of iron ions. However, this method requires energization, so that the running cost is high.
Operation management was also troublesome.
【０００４】このため、本発明者らは、銅線で接続した
鉄板と銅板を被処理水に浸漬し、電池反応を利用して、
鉄板からの鉄イオンの溶出速度を増加させることを試み
た。この方法では、鉄板のみを浸漬した場合と比べれば
溶出速度は上がったが、まだ十分とは言えなかった。ま
た、鉄板や銅板を交互に配置し、かつ銅線で結線しなけ
ればならないため、装置が大掛かりになる上に、配置に
手間がかかるという問題もあった。[0004] Therefore, the present inventors, by immersing the iron plate and the copper plate connected by a copper wire in the water to be treated, utilizing the battery reaction,
We tried to increase the elution rate of iron ions from the iron plate. In this method, the dissolution rate was increased as compared with the case where only the iron plate was immersed, but it was still not sufficient. Further, since iron plates and copper plates must be alternately arranged and connected by copper wires, there is a problem that the device becomes large in size and the arrangement is troublesome.
【０００５】[0005]
【発明が解決しようとする課題】本発明は上記のような
従来技術の欠点を解消するべくなされたものであり、金
属イオンの溶出速度を高めることができ、コンパクト
で、取扱いの容易なリン除去材を提供すること、及びそ
のリン除去材を用いてリンを簡便に効率よく除去する方
法を提供することを課題とする。The present invention has been made to solve the above-mentioned drawbacks of the prior art, and is capable of increasing the elution rate of metal ions, compact, and easy to handle phosphorus removal. It is an object to provide a material and a method for easily and efficiently removing phosphorus using the phosphorus removing material.
【０００６】[0006]
【課題を解決するための手段】上記の課題は、本発明の
第１の金属繊維と、第１の金属繊維よりも電気化学的に
貴な第２の金属繊維とを含むことを特徴とするリン除去
材によって達成される。The above-mentioned problems are characterized by including the first metal fiber of the present invention and a second metal fiber which is electrochemically more noble than the first metal fiber. Achieved by phosphorus removal material.
【０００７】また、本発明は、リン成分を含む水に、第
１の金属繊維と、第１の金属繊維よりも電気化学的に貴
な第２の金属繊維とを含むリン除去材を入れて、第１の
金属繊維から金属イオンを溶出させることにより、不溶
性のリン−金属化合物を形成させてリン成分を含む水か
らリンを除去する方法に関する。Further, in the present invention, the phosphorus removing material containing the first metal fiber and the second metal fiber which is electrochemically nobler than the first metal fiber is put in water containing a phosphorus component. , A method of removing phosphorus from water containing a phosphorus component by forming an insoluble phosphorus-metal compound by eluting metal ions from the first metal fiber.
【０００８】[0008]
【発明の実施の形態】本発明のリン除去材は、第１の金
属繊維と、第１の金属繊維よりも電気化学的に貴な第２
の金属繊維とを接触した状態で含むので、リン成分を含
む水に入れると、局部電池反応のような電気化学的反応
により大きな表面積を持つ第１の金属繊維から金属イオ
ンが溶出するため、金属イオンの溶出速度を大きくする
ことができる。溶出した金属イオンは被処理水中に含ま
れるリン酸イオンなどのリン成分と反応することによ
り、不溶性のリン酸金属塩などのリン−金属化合物を形
成して析出するため、溶出速度が増すことによってリン
の除去能力が向上する。また、本発明のリン除去材は金
属繊維を用いるものであるため、コンパクトに形成で
き、取扱い性が容易である。BEST MODE FOR CARRYING OUT THE INVENTION The phosphorus removing material of the present invention comprises a first metal fiber and a second metal electrochemically noble than the first metal fiber.
When it is put in water containing a phosphorus component, metal ions are eluted from the first metal fiber having a large surface area due to an electrochemical reaction such as a local cell reaction. The elution rate of ions can be increased. The eluted metal ions react with a phosphorus component such as a phosphate ion contained in the water to be treated to form an insoluble phosphorus-metal compound such as a metal phosphate salt, which is precipitated, thereby increasing the elution rate. The phosphorus removal capacity is improved. In addition, since the phosphorus removing material of the present invention uses metal fibers, it can be formed compact and easy to handle.
【０００９】本発明に用いる第１の金属繊維と第２の金
属繊維には、電気化学的に見て相対的に差のある金属か
らなる繊維が用いられ、第２の金属繊維が第１の金属繊
維よりも電気化学的に貴である金属からなる繊維が使用
される。例えば、第１の金属繊維としては、鉄繊維、ア
ルミニウム繊維、亜鉛繊維、マグネシウム繊維などが使
用でき、第２の金属繊維としては、これらより電気化学
的に貴である、ステンレス繊維、銅繊維、鉛繊維、ニッ
ケル繊維、銀繊維、チタン繊維、白金繊維などが使用で
きる。なお、各金属繊維を構成する金属は単体であって
もよいし、合金であってもよい。また、各第１及び第２
の金属繊維は各々１種類の金属繊維を用いてもよいし、
２種類以上の金属繊維を用いてもよい。As the first metal fiber and the second metal fiber used in the present invention, fibers made of a metal having a relative electrochemical difference are used, and the second metal fiber is the first metal fiber. Fibers made of metals that are electrochemically more noble than metal fibers are used. For example, iron fibers, aluminum fibers, zinc fibers, magnesium fibers or the like can be used as the first metal fibers, and stainless steel fibers, copper fibers, which are electrochemically noble from these, can be used as the second metal fibers. Lead fiber, nickel fiber, silver fiber, titanium fiber, platinum fiber and the like can be used. The metal forming each metal fiber may be a simple substance or an alloy. Also, each first and second
Each of the metal fibers may be one type of metal fiber,
You may use 2 or more types of metal fibers.
【００１０】第１の金属繊維と第２の金属繊維の組合わ
せは、電気化学的に見て相対的に差があればとくに限定
されないが、できるだけこの差の大きいものを選択する
ことが望ましい。電気化学的な差は、例えば金属繊維を
構成する金属の飽和甘こう電極基準電位などから推定で
きる。ただし、金属の種類や使用状態によっては、酸化
被膜を生じることなどにより安定な状態になってイオン
の溶出が減るため、必ずしもこの電位差が大きい組合わ
せがリン除去に優れているとは限らない。例えば、第１
の金属繊維では、鉄繊維よりもアルミニウム繊維の方が
飽和甘こう電極基準電位が低く、第２の金属繊維に同じ
ものを用いれば、アルミニウム繊維との組合わせの方が
イオンの溶出速度が大きいはずであるが、実際には鉄繊
維の方がイオンの溶出速度が大きくなる。The combination of the first metal fiber and the second metal fiber is not particularly limited as long as there is a relative difference electrochemically, but it is desirable to select one having a large difference as much as possible. The electrochemical difference can be estimated, for example, from the saturated sweet electrode reference potential of the metal constituting the metal fiber. However, depending on the type of metal and the state of use, a stable state is formed due to the formation of an oxide film and the elution of ions is reduced. Therefore, a combination having a large potential difference is not always excellent in phosphorus removal. For example, the first
Among the metal fibers, the aluminum fiber has a lower saturated sweetener electrode reference potential than the iron fiber, and if the same second metal fiber is used, the ion elution rate is higher in the combination with the aluminum fiber. As expected, iron fibers actually have a higher ion elution rate.
【００１１】第１の金属繊維としては、他の電気化学的
に卑な金属繊維と比べて酸化被膜を形成しにくく、イオ
ンの溶出速度が大きく、汎用されていて入手しやすいこ
とから、鉄繊維、とくにスチールウールを用いることが
とくに望ましい。また、第１の金属繊維に鉄繊維を用い
る場合、第２の金属繊維としてはステンレス繊維と組合
わせると鉄イオンの溶出速度が大きくなり、リン除去能
力が向上する。The first metal fiber is an iron fiber because it is less likely to form an oxide film than other electrochemically base metal fibers, has a high ion elution rate, and is widely used and easily available. It is particularly desirable to use steel wool. When iron fiber is used as the first metal fiber, when the second metal fiber is combined with stainless fiber, the elution rate of iron ions is increased and the phosphorus removal capability is improved.
【００１２】また、第１の金属繊維は、繊維径が細いほ
ど装置をコンパクトにできると共に金属イオンの溶出速
度が大きくなる傾向があるが、あまり繊維径が細くなり
すぎると使用寿命が短くなると共に保形性が低下するた
め、その繊維径は１〜１０００μｍ、より好ましくは１
０〜５００μｍであるのがよい。The first metal fiber tends to have a smaller device as the fiber diameter becomes smaller and the metal ion elution rate tends to increase. However, if the fiber diameter becomes too thin, the service life becomes short and Since the shape retention property decreases, the fiber diameter is 1 to 1000 μm, more preferably 1
The thickness is preferably 0 to 500 μm.
【００１３】本発明のリン除去材は第１の金属繊維と第
２の金属繊維を含む繊維集合体からなる。繊維集合体と
しては、フェルト、不織布、織物、編み物、紙などの繊
維質シートや、水の出入りが可能な容器中に繊維を詰め
たものや、集積した繊維を水透過性の材料で覆ったもの
などが使用できる。この内、フェルト、不織布や、水の
出入りが可能な容器中に繊維を詰めたものや、集積した
繊維を水透過性の材料で覆ったものなどは、繊維が３次
元的に分布した構造となり、被処理水との接触面積が増
えるので好ましい。とくに、フェルトや不織布は、２次
加工により、通水抵抗が小さく、表面積の大きな立体形
状に成形できるのでよい。このような立体形状として
は、ダンボール形状、ハニカム形状、プリーツ形状、菊
花状断面を有する棒形状などがある。なお、菊花状断面
を有する棒形状は、複数枚の不織布を積層したものに、
線状の結合部を形成することより得られ、結合部から放
射状に不織布片が伸びる菊花状断面を持つ。The phosphorus removing material of the present invention comprises a fiber assembly containing a first metal fiber and a second metal fiber. As the fiber aggregate, a fibrous sheet such as felt, non-woven fabric, woven fabric, knitted fabric, paper, etc., fibers packed in a container that allows water to come in and out, and accumulated fibers are covered with a water-permeable material. Things etc. can be used. Of these, felt, non-woven fabrics, those packed with fibers in a container that allows water to enter and exit, and those whose accumulated fibers are covered with a water-permeable material have a three-dimensionally distributed structure. It is preferable because the contact area with the water to be treated increases. In particular, felt or nonwoven fabric is preferable because it can be formed into a three-dimensional shape having a small water resistance and a large surface area by secondary processing. Examples of such a three-dimensional shape include a cardboard shape, a honeycomb shape, a pleat shape, and a bar shape having a chrysanthemum cross section. Incidentally, the rod shape having a chrysanthemum-shaped cross section is obtained by laminating a plurality of nonwoven fabrics,
It has a chrysanthemum-shaped cross-section obtained by forming a linear joint portion, from which the nonwoven fabric pieces extend radially from the joint portion.
【００１４】不織布からなるリン除去材を作製する場
合、各金属繊維の結合は、通常の不織布を製造する場合
と同様に、機械的絡合、接着剤による結合、接着繊維に
よる結合などにより行うことができるが、とくにニード
ルパンチなどによる機械的絡合により結合することが望
ましい。機械的絡合によれば、繊維が絡合することによ
り第１の金属繊維と第２の金属繊維の接触点を増やすこ
とができるため、局部電池反応による第１の金属繊維か
らの金属イオンの溶出を安定に行わせることができると
共に、金属繊維と水との接触を妨げたり、水に溶出した
りするおそれのある接着剤などを用いずに強度のある不
織布が得られるため、安全で、取扱い性の良いリン除去
材を提供できる。When a phosphorus removing material made of a non-woven fabric is produced, each metal fiber is bonded by mechanical entanglement, bonding with an adhesive, bonding with an adhesive fiber, etc., as in the case of manufacturing a normal non-woven fabric. However, it is particularly preferable to connect them by mechanical entanglement such as needle punching. According to the mechanical entanglement, the number of contact points between the first metal fiber and the second metal fiber can be increased by the entanglement of the fibers, so that the metal ions from the first metal fiber due to the local cell reaction can be generated. It is possible to make elution stable, and to prevent the contact between metal fibers and water, or to obtain a strong nonwoven fabric without using an adhesive that may elute in water, so it is safe and It is possible to provide a phosphorus removing material that is easy to handle.
【００１５】本発明のリン除去材は、上記の繊維集合体
において、第１の金属繊維と第２の金属繊維とが混合さ
れた構造となっているか、または第１の金属繊維層と第
２の金属繊維層とが積層された構造となっていることが
望ましい。The phosphorus removing material of the present invention has a structure in which the first metal fiber and the second metal fiber are mixed in the above fiber assembly, or the first metal fiber layer and the second metal fiber are mixed. It is desirable that the metal fiber layer and the metal fiber layer are laminated.
【００１６】第１の金属繊維と第２の金属繊維が混合さ
れた構造となっている場合には、第１の金属繊維と第２
の金属繊維は繊維集合体のどの部位においても接触して
おり、２種の金属繊維の間で電気化学的反応が生じて、
第１の金属繊維から金属イオンが溶出する。このため、
厚みを厚くしても十分なリン除去能力を発揮する。ただ
し、このように作用させるためには、第２の金属繊維が
繊維集合体全体に一様に分布していることが望ましく、
第２の金属繊維が比較的多く必要となる。When the structure has a mixture of the first metal fiber and the second metal fiber, the first metal fiber and the second metal fiber
The metal fibers of are in contact at any part of the fiber assembly, and an electrochemical reaction occurs between the two kinds of metal fibers,
Metal ions are eluted from the first metal fiber. For this reason,
Even if the thickness is increased, it exhibits sufficient phosphorus removal ability. However, in order to act in this way, it is desirable that the second metal fibers are evenly distributed throughout the fiber assembly,
A relatively large amount of the second metal fiber is required.
【００１７】一方、第１の金属繊維層と第２の金属繊維
層とが積層された構造となっている場合には、主として
各層の界面付近で、２種の金属繊維の間で電気化学的反
応が生じて、第１の金属繊維から金属イオンが溶出す
る。このため、溶出しない第２の金属繊維層は薄い層で
も十分に機能を発揮するので、第２の金属繊維の量を少
なくできる。ただし、第１の金属繊維層の厚みがあまり
厚いと、電気化学的反応による第１の金属繊維からの金
属イオンの溶出は期待できなくなる。On the other hand, in the case of the structure in which the first metal fiber layer and the second metal fiber layer are laminated, the electrochemical reaction between the two kinds of metal fibers is mainly in the vicinity of the interface of each layer. A reaction occurs and metal ions are eluted from the first metal fiber. For this reason, the second metal fiber layer that does not elute sufficiently exhibits a function even in a thin layer, so that the amount of the second metal fiber can be reduced. However, if the thickness of the first metal fiber layer is too large, the elution of metal ions from the first metal fiber due to an electrochemical reaction cannot be expected.
【００１８】リン除去材に含まれる第１の金属繊維と第
２の金属繊維の重量割合は、繊維集合体の種類や、繊維
径、繊維の配置によっても異なるが、大体、１：１〜
１：０．２の範囲にあることが望ましく、これより第１
の金属繊維の割合が少ないと溶出する金属イオンの量が
不足すると共に、短期間で第１の金属繊維が消費されて
しまって使用寿命が短くなり、これより第２の金属繊維
の割合が少なくなると、第２の金属繊維と接触できない
第１の金属繊維の割合が増え、電気化学的反応による金
属イオンの溶出が減り、リン除去材からの金属イオンの
溶出速度が低下する。とくに、好ましい第１の金属繊維
と第２の金属繊維との重量割合は１：１〜１：０．５で
ある。The weight ratio of the first metal fiber and the second metal fiber contained in the phosphorus removing material varies depending on the kind of fiber aggregate, the fiber diameter, and the arrangement of the fibers, but is generally 1: 1 to 1.
It is desirable to be in the range of 1: 0.2, and the first
If the proportion of the metal fibers is small, the amount of eluted metal ions will be insufficient, and the first metal fibers will be consumed in a short period of time, shortening the service life, and the proportion of the second metal fibers will be smaller than that. Then, the proportion of the first metal fibers that cannot come into contact with the second metal fibers increases, the elution of metal ions due to the electrochemical reaction decreases, and the elution rate of metal ions from the phosphorus removing material decreases. In particular, the weight ratio of the first metal fiber to the second metal fiber is preferably 1: 1 to 1: 0.5.
【００１９】本発明においては、上記本発明のリン除去
材をリン成分を含む水に入れて、第１の金属繊維から金
属イオンを溶出させることにより、不溶性のリン−金属
化合物を形成させてリン成分を含む水からリンを除去す
る。例えば、第１の金属繊維として鉄繊維を、第２の金
属繊維としてステンレス繊維を用いたリン除去材の場合
には、鉄繊維とステンレス繊維が接触していれば、局部
電池反応による電気化学的反応によって鉄繊維から鉄イ
オンが溶出し、この鉄イオンがリン酸イオンなどのリン
成分と反応して水不溶性のリン酸鉄塩となって析出す
る。この析出したリン酸鉄塩を捕集して水中から取り出
せば、水からリン成分を除去することができる。In the present invention, the above phosphorus removing material of the present invention is put into water containing a phosphorus component to elute metal ions from the first metal fiber to form an insoluble phosphorus-metal compound to form phosphorus. Phosphorus is removed from the water containing the components. For example, in the case of a phosphorus removing material using an iron fiber as the first metal fiber and a stainless fiber as the second metal fiber, if the iron fiber and the stainless fiber are in contact with each other, an electrochemical reaction due to a local cell reaction may occur. Iron ions are eluted from the iron fibers by the reaction, and the iron ions react with phosphorus components such as phosphate ions to be deposited as water-insoluble iron phosphate salts. If the precipitated iron phosphate salt is collected and taken out of the water, the phosphorus component can be removed from the water.
【００２０】なお、本発明のリン除去材はリン成分を含
む河川、湖沼、海、排水路などに直接設置してリンの除
去を行ってもよいが、これらから水を取り出した処理用
の水路や処理水槽などに設置してリンを除去してもよ
い。The phosphorus removing material of the present invention may be installed directly in rivers, lakes, seas, drainage canals, etc. containing phosphorus components to remove phosphorus. Alternatively, it may be installed in a treated water tank or the like to remove phosphorus.
【００２１】また、リン除去を促進するために、リン除
去材を配置する場所またはその近傍で曝気を行ってもよ
い。曝気を行って溶存酸素量を調節することによって第
１の金属繊維からの金属イオンの溶出速度を大きくする
ことができる。Further, in order to promote the phosphorus removal, aeration may be performed at the place where the phosphorus removing material is arranged or in the vicinity thereof. By performing aeration and adjusting the amount of dissolved oxygen, the elution rate of metal ions from the first metal fibers can be increased.
【００２２】また、被処理水中に塩化ナトリウム、塩化
アンモニウムなどの電解質を添加して電気伝導度を高め
ることによって、第１の金属繊維の金属イオンの溶出速
度を高めることができる。Further, by adding an electrolyte such as sodium chloride or ammonium chloride to the water to be treated to increase the electric conductivity, the elution rate of the metal ions of the first metal fiber can be increased.
【００２３】[0023]
実施例１ 繊維径１０μｍのスチールウールと、繊維径１０μｍの
ステンレスウールとを重量比１：１の割合で混合した繊
維ウェブをニードルパンチ機により絡合して、面密度１
ｋｇ／ｍ2 、厚さ２０ｍｍのニードルパンチ不織布から
なるリン除去材を作製した。塩化ナトリウム０．８ｇ／
ｌを含む水道水からなる試験水２ｌ中にリン除去材４０
ｇを入れ、曝気により溶存酸素濃度を８ｍｇ／ｌに調整
しながら２時間攪拌した後、リン除去材を試験水中から
取り出して、試験水中の鉄イオン濃度を測定し、鉄１ｇ
当たりの鉄イオンの溶出速度を求めて表１に示した。ま
た、塩化ナトリウム０．８ｇ／ｌとリン酸二水素カリウ
ム４．４ｍｇ／ｌを含む水道水からなるリン濃度（ＰＯ
4 -3 −Ｐ）１ｍｇ／ｌに調整した試験水３ｌ中にリン除
去材４０ｇを入れ、曝気により溶存酸素濃度を８ｍｇ／
ｌに調整しながら５０分間攪拌した後、リン除去材を試
験水中から取り出して、試験水中のリン（ＰＯ4 -3 −
Ｐ）濃度を測定し、表１に示した。Example 1 Steel wool having a fiber diameter of 10 μm and stainless wool having a fiber diameter of 10 μm were mixed at a weight ratio of 1: 1 and entangled with a needle punch machine to obtain an areal density of 1
kg / m 2, to prepare a phosphorus-removing material comprising a thickness of 20mm needle punched nonwoven. Sodium chloride 0.8g /
40 l of phosphorus removing material in 2 l of test water consisting of tap water containing 1
g, and after stirring for 2 hours while adjusting the dissolved oxygen concentration to 8 mg / l by aeration, remove the phosphorus removing material from the test water, measure the iron ion concentration in the test water, and iron 1 g
The elution rate of iron ions per hit was determined and shown in Table 1. Further, the phosphorus concentration (PO concentration) consisting of tap water containing 0.8 g / l of sodium chloride and 4.4 mg / l of potassium dihydrogen phosphate.
4 -3- P) 40 g of phosphorus removing material was put in 3 l of test water adjusted to 1 mg / l, and dissolved oxygen concentration was 8 mg / l by aeration.
After stirring for 50 minutes while adjusting to 1, the phosphorus removing material was taken out of the test water, and phosphorus (PO 4 -3-
The P) concentration was measured and is shown in Table 1.
【００２４】実施例２ 繊維径１００μｍのスチールウールと、繊維径１００μ
ｍのステンレスウールとを重量比１：１の割合で混合し
た繊維ウェブをニードルパンチ機により絡合して、面密
度１ｋｇ／ｍ2 、厚さ２０ｍｍのニードルパンチ不織布
からなるリン除去材を作製した。このリン除去材の鉄イ
オンの溶出速度とリン除去材で処理した後の試験水のリ
ン（ＰＯ4 -3 −Ｐ）濃度を、実施例１と同様にして求
め、結果を表１に示した。Example 2 Steel wool having a fiber diameter of 100 μm and a fiber diameter of 100 μm
A fiber web prepared by mixing m of stainless wool with a weight ratio of 1: 1 was entangled with a needle punch machine to prepare a phosphorus removing material composed of a needle punch nonwoven fabric having an areal density of 1 kg / m 2 and a thickness of 20 mm. . The elution rate of the iron ions of the phosphorus removing material and the phosphorus (PO 4 -3- P) concentration of the test water after the treatment with the phosphorus removing material were determined in the same manner as in Example 1, and the results are shown in Table 1. .
【００２５】実施例３ 繊維径５００μｍのスチールウールと、繊維径５００μ
ｍのステンレスウールとを重量比１：１の割合で混合し
た繊維ウェブをニードルパンチ機により絡合して、面密
度１ｋｇ／ｍ2 、厚さ２０ｍｍのニードルパンチ不織布
からなるリン除去材を作製した。このリン除去材の鉄イ
オンの溶出速度とリン除去材で処理した後の試験水のリ
ン（ＰＯ4 -3 −Ｐ）濃度を、実施例１と同様にして求
め、結果を表１に示した。Example 3 Steel wool having a fiber diameter of 500 μm and a fiber diameter of 500 μm
A fiber web prepared by mixing m of stainless wool with a weight ratio of 1: 1 was entangled with a needle punch machine to prepare a phosphorus removing material composed of a needle punch nonwoven fabric having an areal density of 1 kg / m 2 and a thickness of 20 mm. . The elution rate of the iron ions of the phosphorus removing material and the phosphorus (PO 4 -3- P) concentration of the test water after the treatment with the phosphorus removing material were determined in the same manner as in Example 1, and the results are shown in Table 1. .
【００２６】実施例４ 繊維径１０μｍのスチールウールと、繊維径１０μｍの
ステンレスウールとを重量比２：１の割合で混合した繊
維ウェブをニードルパンチ機により絡合して、面密度１
ｋｇ／ｍ2 、厚さ２０ｍｍのニードルパンチ不織布から
なるリン除去材を作製した。このリン除去材の鉄イオン
の溶出速度とリン除去材で処理した後の試験水のリン
（ＰＯ4 -3 −Ｐ）濃度を、実施例１と同様にして求め、
結果を表１に示した。Example 4 A steel wool having a fiber diameter of 10 μm and a stainless steel wool having a fiber diameter of 10 μm were mixed at a weight ratio of 2: 1, and the fiber web was entangled with a needle punching machine to have an areal density of 1
kg / m 2, to prepare a phosphorus-removing material comprising a thickness of 20mm needle punched nonwoven. The elution rate of iron ions of the phosphorus removing material and the phosphorus (PO 4 -3- P) concentration of the test water after the treatment with the phosphorus removing material were determined in the same manner as in Example 1,
The results are shown in Table 1.
【００２７】実施例５ 繊維径１０μｍのスチールウールからなる繊維ウェブ
と、繊維径１０μｍのステンレスウールからなる繊維ウ
ェブとを重量比が１：１となるように積層し、面密度１
ｋｇ／ｍ2 、厚さ２０ｍｍの積層不織布からなるリン除
去材を作製した。このリン除去材の鉄イオンの溶出速度
とリン除去材で処理した後の試験水のリン（ＰＯ4 -3 −
Ｐ）濃度を、実施例１と同様にして求め、結果を表１に
示した。Example 5 A fiber web made of steel wool having a fiber diameter of 10 μm and a fiber web made of stainless wool having a fiber diameter of 10 μm were laminated in a weight ratio of 1: 1, and an areal density of 1 was obtained.
kg / m 2, to prepare a phosphorus-removing material having a thickness of 20mm laminated nonwoven fabric. The elution rate of iron ions from the phosphorus removing material and the phosphorus (PO 4 -3-
The P) concentration was determined in the same manner as in Example 1, and the results are shown in Table 1.
【００２８】比較例１ 縦５ｃｍ×横５ｃｍ×厚さ０．２ｃｍの鉄板（重さ４０
ｇ）３枚を、実施例１のリン除去材の代りに用いたこと
以外は、実施例１と同様にして鉄イオンの溶出速度と鉄
板で処理した後の試験水のリン（ＰＯ4 -3 −Ｐ）濃度
を、結果を表１に示した。COMPARATIVE EXAMPLE 1 An iron plate 5 cm long × 5 cm wide × 0.2 cm thick (weight 40
g) In the same manner as in Example 1 except that 3 sheets were used instead of the phosphorus removing material in Example 1, the elution rate of iron ions and phosphorus in the test water after treatment with the iron plate (PO 4 -3 The results of the -P) concentration are shown in Table 1.
【００２９】比較例２ 縦５ｃｍ×横５ｃｍ×厚さ０．２ｃｍの鉄板（重さ４０
ｇ）と縦５ｃｍ×横５ｃｍ×厚さ０．２ｃｍのステンレ
ス板（重さ４０ｇ）各３枚を交互に４ｃｍ間隔で並べ、
各板を銅線で連結したものを、実施例１のリン除去材の
代りに用いたこと以外は、実施例１と同様にして鉄イオ
ンの溶出速度と鉄板とステンレス板で処理した後の試験
水のリン（ＰＯ4 -3 −Ｐ）濃度を求め、結果を表１に示
した。Comparative Example 2 An iron plate of 5 cm long × 5 cm wide × 0.2 cm thick (weight 40
g) and three stainless steel plates (weight 40 g) each having a length of 5 cm x a width of 5 cm x a thickness of 0.2 cm are alternately arranged at intervals of 4 cm.
A test after treatment of iron ion elution rate and treatment with an iron plate and a stainless steel plate in the same manner as in Example 1 except that each plate was connected with a copper wire instead of the phosphorus removing material of Example 1. The phosphorus (PO 4 -3- P) concentration in water was determined, and the results are shown in Table 1.
【００３０】比較例３ 繊維径５００μｍのスチールウールからなる繊維ウェブ
をニードルパンチ機により絡合して、面密度１ｋｇ／ｍ
2 、厚さ２０ｍｍのニードルパンチ不織布からなるリン
除去材を得た。このリン除去材の鉄イオンの溶出速度と
リン除去材で処理した後の試験水のリン（ＰＯ4 -3 −
Ｐ）濃度を、実施例１と同様にして求め、結果を表１に
示した。Comparative Example 3 A fiber web made of steel wool having a fiber diameter of 500 μm was entangled with a needle punch machine to have an area density of 1 kg / m.
2. A phosphorus removing material made of a needle-punched nonwoven fabric having a thickness of 20 mm was obtained. The elution rate of iron ions from the phosphorus removing material and the phosphorus (PO 4 -3-
The P) concentration was determined in the same manner as in Example 1, and the results are shown in Table 1.
【００３１】[0031]
【表１】 [Table 1]
【００３２】実施例６ 初期リン濃度（ＰＯ4 -3 −Ｐ）１．５ｍｇ／ｌの生活排
水が流れる排水路に、実施例１のリン除去材４８０ｇ
（９．６ｌ）を充填したプラスチック容器を、排水路の
上流側の生活排水がプラスチック容器の流入口から流入
し、排水路の下流側へプラスチック容器の流出口から流
出するように設置した。プラスチック容器内の生活排水
を曝気により溶存酸素濃度を８ｍｇ／ｌに調整しなが
ら、排水を２分間リン除去材と接触するように流量４．
８ｌ／分で流した。リン除去材を通過した生活排水を取
り出して、リン（ＰＯ4 -3 −Ｐ）濃度を測定したところ
０．１ｍｇ／ｌに低下していた。また、リン除去材を通
過した生活排水の鉄のイオン濃度を測定して鉄の溶出速
度を求めたところ１２ｍｇ／ｇ・ｈｒであった。Example 6 480 g of the phosphorus removing material of Example 1 was placed in a drainage channel through which domestic wastewater having an initial phosphorus concentration (PO 4 -3- P) of 1.5 mg / l flows.
A plastic container filled with (9.6 l) was installed so that domestic wastewater on the upstream side of the drainage channel would flow in from the inlet of the plastic container and flow out to the downstream side of the drainage channel from the outlet of the plastic container. 3. Adjust the dissolved oxygen concentration to 8 mg / l by aeration of the domestic wastewater in the plastic container, and keep the wastewater in contact with the phosphorus removing material for 2 minutes.
Run at 8 l / min. When the domestic wastewater that passed through the phosphorus removing material was taken out and the phosphorus (PO 4 -3- P) concentration was measured, it was found to be 0.1 mg / l. Further, the ion concentration of iron in domestic wastewater that passed through the phosphorus removing material was measured and the elution rate of iron was determined to be 12 mg / g · hr.
【００３３】[0033]
【発明の効果】本発明のリン除去材は、金属イオンの溶
出速度が大きいためリンの除去能力が高く、しかもコン
パクトに形成でき、取扱い性が容易である。このため、
リン成分を含む河川、湖沼、海、排水路などの水に作業
性よく設置することができると共に、効率よくリン成分
を除去できる。EFFECTS OF THE INVENTION The phosphorus removing material of the present invention has a high metal ion elution rate and thus has a high phosphorus removing ability, and can be formed compactly and is easy to handle. For this reason,
It can be installed in water such as rivers, lakes, seas, and drainage channels containing phosphorus components with good workability, and it can efficiently remove phosphorus components.
Claims (8)
も電気化学的に貴な第２の金属繊維とを接触した状態で
含むことを特徴とするリン除去材。1. A phosphorus removing material comprising a first metal fiber and a second metal fiber, which is electrochemically more noble than the first metal fiber, in contact with each other.
徴とする請求項１に記載のリン除去材。2. The phosphorus removing material according to claim 1, wherein the fibers are mechanically entangled.
合されていることを特徴とする請求項１または請求項２
に記載のリン除去材。3. The first metal fiber and the second metal fiber are mixed, and the first metal fiber and the second metal fiber are mixed.
The phosphorus removal material described in.
繊維からなる層とが積層されていることを特徴とする請
求項１または請求項２に記載のリン除去材。4. The phosphorus removing material according to claim 1, wherein a layer made of the first metal fiber and a layer made of the second metal fiber are laminated.
特徴とする請求項１〜４のいずれかに記載のリン除去
材。5. The phosphorus removing material according to claim 1, wherein the first metal fiber is an iron fiber.
ことを特徴とする請求項５に記載のリン除去材。6. The phosphorus removing material according to claim 5, wherein the second metal fiber is a stainless fiber.
と、第１の金属繊維よりも電気化学的に貴な第２の金属
繊維とを含むリン除去材を入れて、第１の金属繊維から
金属イオンを溶出させることにより、不溶性のリン−金
属化合物を形成させてリン成分を含む水からリンを除去
する方法。7. A phosphorus-removing material containing a first metal fiber and a second metal fiber, which is electrochemically nobler than the first metal fiber, is added to water containing a phosphorus component, and the first metal fiber is added. A method for removing phosphorus from water containing a phosphorus component by eluting metal ions from metal fibers to form an insoluble phosphorus-metal compound.
を水を曝気しながら行うことを特徴とする請求項７に記
載のリン除去方法。8. The method for removing phosphorus according to claim 7, wherein the elution of the metal ions from the first metal fiber is performed while aerating the water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP09201596A JP3653332B2 (en) | 1996-03-21 | 1996-03-21 | Phosphorus removing material and phosphorus removing method using the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP09201596A JP3653332B2 (en) | 1996-03-21 | 1996-03-21 | Phosphorus removing material and phosphorus removing method using the same |
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| Publication Number | Publication Date |
|---|---|
| JPH09253627A true JPH09253627A (en) | 1997-09-30 |
| JP3653332B2 JP3653332B2 (en) | 2005-05-25 |
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ID=14042703
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|---|---|---|---|
| JP09201596A Expired - Fee Related JP3653332B2 (en) | 1996-03-21 | 1996-03-21 | Phosphorus removing material and phosphorus removing method using the same |
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| Country | Link |
|---|---|
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