JP2705912B2 - Carrier for wastewater treatment - Google Patents
Carrier for wastewater treatmentInfo
- Publication number
- JP2705912B2 JP2705912B2 JP7048914A JP4891495A JP2705912B2 JP 2705912 B2 JP2705912 B2 JP 2705912B2 JP 7048914 A JP7048914 A JP 7048914A JP 4891495 A JP4891495 A JP 4891495A JP 2705912 B2 JP2705912 B2 JP 2705912B2
- Authority
- JP
- Japan
- Prior art keywords
- heat
- carrier
- laminated
- wastewater treatment
- fibers
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/10—Biological treatment of water, waste water, or sewage
Landscapes
- Biological Treatment Of Waste Water (AREA)
- Nonwoven Fabrics (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、排水処理を行う微生物
を付着させるための排水処理用の担体に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a wastewater treatment carrier for attaching microorganisms for wastewater treatment.
【０００２】[0002]
【従来の技術】この種の担体として、固定床に設置され
ずに排水中で流動するように構成された流動担体が知ら
れている。この流動担体のうち、小形のものとしては、
プラスチックにより３〜５mm程度の球状や立方体状に形
成されたものが一般的である。また、ＰＶＡやＰＥＧや
ポリアクリルアミド等によりゲル状に形成されたもの
や、ウレタンやセルロースによってスポンジ状に形成さ
れたものなども知られている。2. Description of the Related Art As a carrier of this type, a fluid carrier configured to flow in wastewater without being installed on a fixed bed is known. Among these fluid carriers, as small ones,
Generally, it is formed in a spherical or cubic shape of about 3 to 5 mm by plastic. In addition, those formed in a gel state by PVA, PEG, polyacrylamide, or the like, and those formed in a sponge state by urethane or cellulose are also known.
【０００３】大形の流動担体としては、スポンジ状体、
モノフィラメント成型品、プラスチック成型品、不織布
などによって、30〜150 mm程度の球状、筒状、立法体
状、その他の形状に形成されたものが一般的である。[0003] As large-sized fluid carriers, sponge-like bodies,
It is generally formed into a spherical, cylindrical, cubic, or other shape of about 30 to 150 mm using a monofilament molded product, plastic molded product, nonwoven fabric, or the like.
【０００４】[0004]
【発明が解決しようとする課題】しかし、このような従
来のものでは、いずれも担体における微生物の付着層が
薄く、その付着量を多くするためには比表面積を大きく
しなければならず、そのためには担体を小形化しなけれ
ばならない。ところが、特に小形に形成されたものをさ
らに小形化すると、この担体が処理槽から流出するのを
防止するためのスクリーンで拾集するのが困難となるた
め、その小形化にはおのずと限界がある。繊維にて形成
した場合には、単繊維が脱落しやすいという欠点があ
る。However, in each of such conventional devices, the adhesion layer of microorganisms on the carrier is thin, and the specific surface area must be increased in order to increase the amount of adhesion. In this case, the carrier must be miniaturized. However, in particular, when a small-sized product is further reduced in size, it is difficult to collect the carrier with a screen for preventing the carrier from flowing out of the processing tank. . When formed from fibers, there is a drawback that single fibers are likely to fall off.
【０００５】さらに、上述のように付着層が薄いのに加
えて、その付着層が剥離しやすい欠点がある。また、特
に大形の筒状に形成する場合には矩形状のシートを丸め
てその両端を接合しなければならないなど、成形のため
の加工に手間を要して、そのコストが高くつくという欠
点もある。加えて、担体としての性能は、その担体を構
成する材料によって一元的に決まってしまい、必要に応
じて細かくコントロールすることができないという欠点
さえある。Further, in addition to the thin adhesion layer as described above, there is a disadvantage that the adhesion layer is easily peeled off. In addition, in the case of forming a large-sized tube, a rectangular sheet must be rolled and both ends thereof must be joined together. There is also. In addition, the performance as a carrier is evenly determined by the material constituting the carrier, and there is even a disadvantage that it cannot be finely controlled as necessary.
【０００６】そこで本発明はこのような問題点を解決
し、微生物の付着層の厚さを大きくでき、その比表面積
も大きくでき、その付着強度も大きくでき、また容易に
立体的に湾曲させて成形でき、しかも担体としての性能
を自在にコントロールできるようにすることを目的とす
る。Accordingly, the present invention solves such problems, and can increase the thickness of the adhesion layer of microorganisms, increase the specific surface area, increase the adhesion strength, and easily three-dimensionally curve. It is intended to be able to be molded and to be able to freely control the performance as a carrier.
【０００７】[0007]
【課題を解決するための手段】この目的を達成するため
本発明の排水処理用の担体は、異種類の繊維からなる層
を積層した積層シートにて構成されるとともに、少なく
とも一層が熱収縮繊維にて構成され、かつこの熱収縮繊
維の熱収縮によって前記積層シートが立体的に湾曲した
構成とされているようにしたものである。Means for Solving the Problems] To achieve this object carrier for wastewater treatment of the present invention, while being hand in a multilayer sheet obtained by laminating a layer made of different kinds of fibers, at least one layer heat shrinkable The laminated sheet is made of fiber, and the laminated sheet is three-dimensionally curved by the heat shrinkage of the heat shrinkable fiber .
It is configured to have a configuration .
【０００８】[0008]
【作用】このような構成によれば、異種類の繊維からな
る層を積層するとともに、少なくとも一層を熱収縮繊維
にて構成したため、各層を構成する繊維自体およびその
組合せを適宜に選択したり、熱収縮のための熱処理条件
を適宜に設定することで、微生物の付着層の厚さや付着
強度を大きくすることが可能となる。たとえば、繊維の
素材、繊度、カット長、断面形状などの繊維自体の仕様
を変化させたり、熱処理条件を変化させたり、繊維どう
しの配合比を変化させたり、あるいは起毛加工を行った
りするなどによって、嵩高さ、硬さ、強度、比重、表面
形状などを、用途や目的に応じて自由にコントロールし
たり、付着層を剥離しにくくしたりすることが可能とな
る。According to such a constitution, since layers composed of different kinds of fibers are laminated and at least one layer is composed of heat-shrinkable fibers, the fibers themselves constituting each layer and the combination thereof can be appropriately selected. By appropriately setting the heat treatment conditions for heat shrinkage, it is possible to increase the thickness and the adhesion strength of the microorganism adhesion layer. For example, by changing the specifications of the fiber itself, such as the fiber material, fineness, cut length, cross-sectional shape, changing the heat treatment conditions, changing the compounding ratio of the fibers, or raising the fibers It is possible to freely control bulkiness, hardness, strength, specific gravity, surface shape and the like according to the use and purpose, and to make it difficult to peel off the adhesion layer.
【０００９】また熱収縮繊維に熱収縮を発現させて積層
シートを立体的に湾曲させるものであるため、薄い材料
で大形の担体を得ることができ、このため単位綿量あた
りの比表面積を大きく採ることが可能になる。このた
め、上述のように付着層の厚さを大きくできることと相
まって、比付着量を非常に大きくすることができる。ま
た比較的大きく形成しても比表面積を大きく保つことが
できる。しかも熱収縮繊維に熱収縮を発現させて立体化
させるものであることから、その製造工程が簡単であ
る。このように簡単に製造でき、従来のような接合処理
などは不要であるから、比較的小形でしかも立体的な担
体であっても、容易に製造することができる。The heat-shrinkable fibers are made to exhibit heat shrinkage and laminated.
Since the sheet is curved three-dimensionally , a large-sized carrier can be obtained from a thin material, and therefore, it is possible to obtain a large specific surface area per unit cotton amount. For this reason, in addition to the fact that the thickness of the adhesion layer can be increased as described above, the specific adhesion amount can be extremely increased. In addition, the specific surface area can be kept large even if formed relatively large. In addition, since the heat-shrinkable fiber is made to exhibit three-dimensional shape by expressing heat shrinkage, the manufacturing process is simple. As described above, it can be easily manufactured, and the conventional bonding process is not required. Therefore, even a relatively small and three-dimensional carrier can be easily manufactured.
【００１０】立体化する前のシート状のものなどでは、
処理槽のスクリーンを通過しやすく、拾集が困難である
が、このように立体的に湾曲させることで、スクリーン
からの流出がなくなり、確実に拾集できることになる。
また立体化して大形化することで、処理槽内での流動性
も良好になる。[0010] In the case of a sheet-like material before three-dimensionalization,
Although it is easy to pass through the screen of the processing tank and it is difficult to pick up, such a three-dimensionally curved shape eliminates outflow from the screen and enables reliable collection.
In addition, by increasing the size of the processing tank, the fluidity in the processing tank is improved.
【００１１】本発明の担体は、熱収縮繊維と、熱収縮を
発現しない通常繊維との積層構造を有するのが好まし
い。熱収縮率が異なるのであれば、異種の熱収縮繊維ど
うしを積層した場合であっても、立体化が可能である。
また、コンジュゲート繊維や熱融着繊維などの特殊繊維
も利用することができる。繊維素材としては、ＰＥＴ、
アクリル、ＰＰ、ＰＥなどを利用することができる。The carrier of the present invention preferably has a laminated structure of heat-shrinkable fibers and normal fibers that do not exhibit heat shrinkage. If the heat shrinkage ratios are different, three-dimensionalization is possible even when different kinds of heat shrinkable fibers are laminated.
Further, special fibers such as conjugate fibers and heat fusion fibers can also be used. PET,
Acrylic, PP, PE, etc. can be used.
【００１２】熱収縮性繊維が一方向性を有する矩形状の
積層シートすなわち熱収縮性繊維が一方向になるように
配置された矩形状の積層シートを熱収縮させれば、円筒
状の担体を得ることができる。また熱収縮性繊維が方向
性を有しないようにランダムに配置された積層シートを
熱収縮させれば、ほぼ球状の担体を得ることができる。The heat-shrinkable fibers have a unidirectional rectangular laminated sheet, that is, the heat-shrinkable fibers are oriented in one direction.
By thermally shrinking the arranged rectangular laminated sheet , a cylindrical carrier can be obtained. In addition, a substantially spherical carrier can be obtained by heat-shrinking a laminated sheet randomly arranged so that the heat-shrinkable fibers have no directionality.
【００１３】立体的に構成された担体に貫通孔が形成さ
れているなら、その立体の内部にも被処理水が入りやす
く、このため処理効率が向上し、また嫌気性汚泥の閉塞
も防止できる。If a through-hole is formed in the three-dimensionally formed carrier, the water to be treated easily enters the inside of the three-dimensional body, so that the treatment efficiency is improved and the obstruction of anaerobic sludge can be prevented. .
【００１４】本発明の担体は、ニードルパンチが施され
た積層不織布にて構成するのが好適である。また積層織
物または積層編物にて構成することもできる。積層不織
布の場合は、比較的厚い積層構造を達成できるため、大
形の担体の製造に特に適する。積層織物の場合は、比較
的薄いものとなるため、小形の担体の製造に適し、また
薄いことから比表面積を大きくとることができる。The carrier of the present invention is preferably composed of a laminated nonwoven fabric subjected to needle punching. Moreover, it can also be comprised with a laminated woven fabric or a laminated knitted fabric. In the case of a laminated nonwoven fabric, a relatively thick laminated structure can be achieved, so that it is particularly suitable for producing a large-sized carrier. In the case of a laminated fabric, it is relatively thin, so that it is suitable for producing a small-sized carrier, and since it is thin, a large specific surface area can be obtained.
【００１５】[0015]
【実施例】図１は、熱収縮繊維からなる不織ウエブ層１
と、熱収縮を発現しない普通の繊維からなる不織ウエブ
層２とが積層され、これら不織ウエブ層１、２がニード
ルパンチ処理されることによって積層一体化された平面
状の積層体３を示す。この積層体３を熱処理すると、熱
収縮繊維からなる不織ウエブ層１が収縮し、かつ普通の
繊維からなる不織ウエブ層２は収縮しないため、積層体
３は、不織ウエブ層１が内側になるように湾曲して、立
体的な構成となる。FIG. 1 shows a non-woven web layer 1 made of heat-shrinkable fibers.
And a nonwoven web layer 2 made of ordinary fiber that does not exhibit heat shrinkage, and the nonwoven web layers 1 and 2 are needle-punched to form a planar laminate 3 that is integrated. Show. When the laminate 3 is heat-treated, the non-woven web layer 1 made of heat-shrinkable fibers shrinks, and the non-woven web layer 2 made of ordinary fibers does not shrink. To form a three-dimensional configuration.
【００１６】たとえば、図２に示すように熱収縮繊維か
らなる不織ウエブ層１を構成する繊維４が一方向性を有
するすなわち繊維４の配列方向が一方向となる矩形状の
積層体３を用い、この積層体３を熱処理すると、図３に
示すように円筒状に形状を保持した担体５が得られる。For example, as shown in FIG. 2, a rectangular laminate 3 in which the fibers 4 constituting the non-woven web layer 1 made of the heat-shrinkable fibers have one direction, that is, the arrangement direction of the fibers 4 is one direction. When the laminate 3 is used and heat-treated, a carrier 5 having a cylindrical shape is obtained as shown in FIG.
【００１７】図２において仮想線で示し、かつ図３にお
いて実線で示すように、立体的に形成された担体５に貫
通孔６が形成されていると、この立体的な担体５の内部
にも被処理水が入りやすく、このため処理効率が向上
し、また嫌気性汚泥の閉塞も防止できる。As shown by a virtual line in FIG. 2 and a solid line in FIG. 3, when the through-hole 6 is formed in the three-dimensionally formed carrier 5, the inside of the three-dimensionally formed carrier 5 is also formed. The water to be treated is easy to enter, thereby improving the treatment efficiency and preventing the anaerobic sludge from being clogged.
【００１８】図４に示す例では、熱収縮繊維からなる不
織ウエブ層１を構成する繊維４が方向性を有しないよう
にランダムに配置されており、このような積層体３を熱
処理すれば、図５に示すようにほぼ球状に立体化された
担体５が得られる。In the example shown in FIG. 4, the fibers 4 constituting the nonwoven web layer 1 made of heat-shrinkable fibers are randomly arranged so as not to have a direction. As shown in FIG. 5, a carrier 5 having a substantially spherical three-dimensional shape is obtained.
【００１９】次に具体例について説明する。 （具体例１）積層不織布に熱処理を施すことで、立体的
な担体を構成した。すなわち、繊度３デニールのアクリ
ル繊維７０重量％と、繊度２デニールのポリエチレン熱
融着繊維３０重量％とを混繊して、目付７０ｇ／ｍ2 の
通常の不織ウエブを得た。また、繊度３デニールのアク
リルハイバルク繊維７０重量％と、繊度２デニールのポ
リエチレン熱融着繊維３０重量％とを混繊して、目付７
０ｇ／ｍ2 の熱収縮性の不織ウエブを得た。そして、こ
れらウエブを重ね合わせ、ニードルパンチング機による
処理を行って積層不織布を得た。また上記通常の不織ウ
エブに起毛加工を施した。そして、得られた不織布を１
０×３０mmの矩形状にカットし、熱処理によってハイバ
ルク繊維を収縮させるとともに熱融着繊維による融着を
発現させた。Next, a specific example will be described. (Specific Example 1) A three-dimensional carrier was formed by subjecting a laminated nonwoven fabric to a heat treatment. That is, 70% by weight of an acrylic fiber having a fineness of 3 denier and 30% by weight of a heat-fused polyethylene fiber having a fineness of 2 denier were mixed to obtain a normal nonwoven web having a basis weight of 70 g / m 2 . Also, 70% by weight of acrylic high-bulk fiber having a fineness of 3 denier and 30% by weight of heat-fused polyethylene fiber having a fineness of 2 denier are mixed to obtain a basis weight of 7%.
A heat-shrinkable nonwoven web of 0 g / m 2 was obtained. Then, these webs were overlapped and processed by a needle punching machine to obtain a laminated nonwoven fabric. The ordinary nonwoven web was brushed. Then, the obtained non-woven fabric is
The sheet was cut into a rectangular shape of 0 × 30 mm, and the high-bulk fiber was shrunk by heat treatment, and fusion by the heat-fused fiber was developed.
【００２０】すると、筒状で適当な硬さを持った比重
１．０４の微生物流動担体が得られた。この流動担体
は、繊維製であるとともに起毛を有するものであること
から、硝化菌の保持性がきわめて良好であった。また、
その比重と形状によって流動性も良く、処理槽のスクリ
ーンからの流出も皆無であり、強度も高いことから、長
期間の安定使用に耐えるものであった。また熱融着繊維
による融着を発現させたため、単繊維の脱落も見られな
かった。 （具体例２）具体例１と同様に、積層不織布に熱処理を
施すことで、立体的な担体を構成した。すなわち、繊度
１０デニールのポリプロピレン繊維８０重量％と、繊度
８デニールのポリエステル熱融着繊維２０重量％とを混
繊して、目付３００ｇ／ｍ2の通常の不織ウエブを得
た。また、繊度８デニールのアクリルハイバルク繊維７
０重量％と、繊度８デニールのポリエステル熱融着繊維
３０重量％とを混繊して、目付２００ｇ／ｍ2 の熱収縮
性の不織ウエブを得た。そして、これらウエブを重ね合
わせ、ニードルパンチング機による処理を行って積層不
織布を得た。そして、得られた不織布を５０×１６０mm
の矩形状にカットし、その中央部に直径２５mmの貫通孔
を穿孔した。その後、熱処理によってハイバルク繊維を
収縮させるとともに熱融着繊維による融着を発現させ
た。As a result, a microbial fluidized carrier having a specific gravity of 1.04 and having a suitable hardness was obtained. Since this fluid carrier was made of fiber and had raised hair, the retention of nitrifying bacteria was extremely good. Also,
Due to its specific gravity and shape, the fluidity was good, there was no outflow from the screen of the treatment tank, and the strength was high, so that it could withstand long-term stable use. In addition, since the fusion by the heat fusion fiber was developed, the single fiber did not fall off. (Specific Example 2) In the same manner as in Specific Example 1, a three-dimensional carrier was formed by subjecting a laminated nonwoven fabric to a heat treatment. That is, 80% by weight of a polypropylene fiber having a fineness of 10 denier and 20% by weight of a polyester heat fusion fiber having a fineness of 8 denier were mixed to obtain a normal nonwoven web having a basis weight of 300 g / m 2 . Acrylic high bulk fiber 7 with a fineness of 8 denier
0% by weight and 30% by weight of polyester heat-fusible fiber having a fineness of 8 denier were mixed to obtain a heat-shrinkable nonwoven web having a basis weight of 200 g / m 2 . Then, these webs were overlapped and processed by a needle punching machine to obtain a laminated nonwoven fabric. Then, the obtained nonwoven fabric is 50 × 160 mm
Was cut into a rectangular shape, and a through-hole having a diameter of 25 mm was formed in the center thereof. Thereafter, the high-bulk fiber was shrunk by heat treatment, and fusion by the heat-fusion fiber was developed.
【００２１】すると、立体化により筒状の担体が得ら
れ、この担体は、適度な硬さを有して形態保持性が良好
であった。その比重は１．１０であった。得られた担体
を従来の曝気槽に多数投入したところ、流動性が良好で
あり、またＢＯＤ処理能力が著しく向上した。さらに、
曝気槽からの流出口に金網を設置しただけで、簡単に流
出を防止することができた。 （具体例３）二重織物に熱処理を施すことで、立体的な
担体を構成した。すなわち、ポリプロピレンモノフィラ
メントを経糸とするとともに、ポリプロピレン加工糸を
緯糸とした、通常の織物からなる第１の層と、ポリエス
テル熱融着糸を経糸とするとともに、アクリルハイバル
ク糸を緯糸とした、熱収縮性の第２の層とによって、二
重織物を形成した。織成後、１０×３０mmの矩形状に熱
溶断を行った。この熱溶断により切断縁は溶結して、糸
のほつれが防止された。As a result, a cylindrical carrier was obtained by three-dimensionalization. This carrier had appropriate hardness and good shape retention. Its specific gravity was 1.10. When a large number of the obtained carriers were put into a conventional aeration tank, the fluidity was good and the BOD treatment capacity was significantly improved. further,
By simply installing a wire mesh at the outlet from the aeration tank, the outflow could be easily prevented. (Specific Example 3) A three-dimensional carrier was formed by performing a heat treatment on the double fabric. That is, a first layer made of a normal woven fabric using a polypropylene monofilament as a warp and a polypropylene processed yarn as a weft, a polyester heat fusion yarn as a warp, and an acrylic high bulk yarn as a weft. The shrinkable second layer formed a double fabric. After weaving, heat cutting was performed in a rectangular shape of 10 × 30 mm. Due to this thermal fusing, the cut edges were welded to prevent the yarn from fraying.
【００２２】その後、熱処理を施した。すると、第２の
層の緯糸を構成するアクリルハイバルク糸が収縮し、円
筒状に立体化した。また第２の層の経糸であるポリエス
テル熱融着糸が相互に融着して結合を強化し、第１の層
の経糸であるポリプロピレンモノフィラメント糸とあい
まって、所要の硬度を発現するとともに形態保持性が向
上した。これにより、目的とする担体が得られた。Thereafter, a heat treatment was performed. Then, the acrylic high-bulk yarn constituting the weft of the second layer shrunk and became three-dimensional in a cylindrical shape. In addition, the polyester heat-fused yarn as the warp of the second layer is fused together to strengthen the bond, and in combination with the polypropylene monofilament yarn as the warp of the first layer, the required hardness is exhibited and the shape is maintained. Improved. Thereby, the target carrier was obtained.
【００２３】[0023]
【発明の効果】以上述べたように本発明によると、異種
類の繊維からなる層を積層した積層シートにて構成され
るとともに、少なくとも一層が熱収縮繊維にて構成さ
れ、かつこの熱収縮繊維の熱収縮によって立体的に湾曲
された構成とされているため、薄い材料で簡単に大形の
担体を得ることができ、また各層を構成する繊維自体お
よびその組合せを適宜に選択したり、熱収縮のための熱
処理条件を適宜に設定することで、微生物の付着層の厚
さや付着強度を大きくすることができる。さらに、薄い
材料で大形の担体を構成できるため、単位綿量あたりの
比表面積を大きく採ることが可能になり、このため、上
述のように付着層の厚さを大きくできることと相まっ
て、比付着量を非常に大きくすることができる。また比
較的大きく形成しても比表面積を大きく保つことができ
る。さらに、立体的に湾曲させることで、処理槽のスク
リーンからの流出を防止でき、確実に拾集できることに
なる。また立体化して大形化することで、処理槽内での
流動性を良好にすることができる。According to the present invention as described above, according to the present invention, together with the hand in a multilayer sheet obtained by laminating a layer made of different kinds of fibers are composed at least one layer in the heat shrinkable fiber, and the heat shrinkage Curved three-dimensionally by heat shrinkage of fiber
Because of the configuration, it is possible to easily obtain a large carrier with a thin material, and appropriately select the fibers themselves and their combinations constituting each layer, and appropriately set the heat treatment conditions for heat shrinkage. By setting to, the thickness and adhesion strength of the adhesion layer of microorganisms can be increased. Furthermore, since a large-sized carrier can be constituted by a thin material, it is possible to take a large specific surface area per unit cotton amount, and thus, as described above, it is possible to increase the thickness of the adhesion layer. The amount can be very large. In addition, the specific surface area can be kept large even if formed relatively large. Furthermore, the three-dimensionally curved shape can prevent the processing tank from flowing out of the screen, and can reliably collect the processing tank. In addition, by increasing the size of the processing tank, the flowability in the processing tank can be improved.
【図１】本発明の担体を製造するための平らな積層体の
一例を示す正面図である。FIG. 1 is a front view showing an example of a flat laminate for producing a carrier of the present invention.
【図２】積層体の他の例を示す平面図である。FIG. 2 is a plan view showing another example of a laminate.
【図３】図２の積層体により得られた担体の斜視図であ
る。FIG. 3 is a perspective view of a carrier obtained by using the laminate of FIG.
【図４】積層体のさらに他の例を示す平面図である。FIG. 4 is a plan view showing still another example of a laminate.
【図５】図４の積層体により得られた担体の斜視図であ
る。FIG. 5 is a perspective view of a carrier obtained by using the laminate of FIG.
１ 不織ウエブ層 ２ 不織ウエブ層 ３ 積層体 ５ 担体 DESCRIPTION OF SYMBOLS 1 Nonwoven web layer 2 Nonwoven web layer 3 Laminate 5 Carrier
Claims (7)
シートにて構成されるとともに、少なくとも一層が熱収
縮繊維にて構成され、かつこの熱収縮繊維の熱収縮によ
って前記積層シートが立体的に湾曲した構成とされてい
ることを特徴とする排水処理用の担体。1. A lamination in which layers composed of different kinds of fibers are laminated.
Together are manually configured to the sheet, it is composed at least one layer in the heat shrinkable fiber, and for wastewater treatment, characterized in that the laminated sheet is a curved configuration stereoscopically by heat shrinkage of the heat shrinkable fiber Carrier.
繊維との積層構造を有することを特徴とする請求項１記
載の排水処理用の担体。2. The wastewater treatment carrier according to claim 1, wherein the carrier has a laminated structure of heat-shrinkable fibers and ordinary fibers that do not exhibit heat shrinkage.
された矩形状の積層シートが熱収縮されることで円筒状
に形成されていることを特徴とする請求項１または２記
載の排水処理用の担体。3. The heat-shrinkable fiber is arranged so as to be in one direction.
Rectangle shape according to claim 1 or 2 carriers for wastewater treatment according laminated sheet is characterized in that it is formed into a cylindrical shape by being heat shrinkage of.
ランダムに配置された積層シートが熱収縮されることで
立体的に湾曲して形成されていることを特徴とする請求
項１または２記載の排水処理用の担体。4. The heat-shrinkable laminated sheet randomly arranged so that the heat-shrinkable fibers do not have directionality, and are heat-shrinked to form a three-dimensionally curved sheet. 2. The carrier for wastewater treatment according to item 2.
る請求項１から４までのいずれか１項記載の排水処理用
の担体。5. The wastewater treatment carrier according to claim 1, wherein a through hole is formed.
て構成されていることを特徴とする請求項１から５まで
のいずれか１項記載の排水処理用の担体。6. The wastewater treatment carrier according to claim 1, wherein the carrier is constituted by a laminated nonwoven fabric subjected to a needle punch.
いることを特徴とする請求項１から５までのいずれか１
項記載の排水処理用の担体。7. The device according to claim 1, wherein the device is made of a laminated woven fabric or a laminated knitted fabric.
9. The carrier for wastewater treatment according to item 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7048914A JP2705912B2 (en) | 1995-03-09 | 1995-03-09 | Carrier for wastewater treatment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7048914A JP2705912B2 (en) | 1995-03-09 | 1995-03-09 | Carrier for wastewater treatment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH08243579A JPH08243579A (en) | 1996-09-24 |
| JP2705912B2 true JP2705912B2 (en) | 1998-01-28 |
Family
ID=12816532
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7048914A Expired - Lifetime JP2705912B2 (en) | 1995-03-09 | 1995-03-09 | Carrier for wastewater treatment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2705912B2 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001347285A (en) * | 2000-06-06 | 2001-12-18 | Hitachi Chem Co Ltd | Hollow cylindrical microorganism carrier and sewage cleaning tank |
| JP5789385B2 (en) * | 2011-03-08 | 2015-10-07 | 呉羽テック株式会社 | Laminated nonwoven fabric for pipe-type coating materials and pipe-type coating materials |
| JP5605848B2 (en) * | 2011-03-08 | 2014-10-15 | 呉羽テック株式会社 | Laminated nonwoven fabric for drain material and drain material made of nonwoven fabric |
| EP2508088A1 (en) * | 2011-04-06 | 2012-10-10 | Groz-Beckert KG | Three-dimensional Shaped Textile Element and Method for the Manufacture of said Element |
| JP5824960B2 (en) * | 2011-08-18 | 2015-12-02 | 三菱レイヨン株式会社 | Microbe attachment carrier |
| JP5824995B2 (en) * | 2011-09-14 | 2015-12-02 | 三菱レイヨン株式会社 | Microbe attachment carrier |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61141997A (en) * | 1984-12-13 | 1986-06-28 | Adonisu Enterp Kk | Laminated block system of film |
| US4748938A (en) * | 1987-03-30 | 1988-06-07 | Elexis Corporation | Electronic flea repelling device with means for carrying collar strap behind the device housing |
| JPS6415112A (en) * | 1987-07-10 | 1989-01-19 | Toshiba Corp | Air cleaning filter |
| JP3167151B2 (en) * | 1991-10-01 | 2001-05-21 | エヌ・イー・ティ株式会社 | Contact material for wastewater treatment |
-
1995
- 1995-03-09 JP JP7048914A patent/JP2705912B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH08243579A (en) | 1996-09-24 |
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