JPH09234067A - Carrier for microorganism and biological treatment device using the same - Google Patents

Carrier for microorganism and biological treatment device using the same

Info

Publication number
JPH09234067A
JPH09234067A JP8044732A JP4473296A JPH09234067A JP H09234067 A JPH09234067 A JP H09234067A JP 8044732 A JP8044732 A JP 8044732A JP 4473296 A JP4473296 A JP 4473296A JP H09234067 A JPH09234067 A JP H09234067A
Authority
JP
Japan
Prior art keywords
cord
fibers
napped
carrier
carrier according
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
Application number
JP8044732A
Other languages
Japanese (ja)
Inventor
Yoshihiro Tomita
芳宏 富田
Hiroyasu Kato
博恭 加藤
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toray Industries Inc
Original Assignee
Toray Industries Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Toray Industries Inc filed Critical Toray Industries Inc
Priority to JP8044732A priority Critical patent/JPH09234067A/en
Publication of JPH09234067A publication Critical patent/JPH09234067A/en
Pending legal-status Critical Current

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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

  • Immobilizing And Processing Of Enzymes And Microorganisms (AREA)
  • Biological Treatment Of Waste Water (AREA)

Abstract

PROBLEM TO BE SOLVED: To obtain a carrier for microorganisms in which cord-like parts protruding in two-way or more directions from axial stem materials have raised fibers implanted on each core material in the parts, thus suitable for water treatment or bioreactors because of having a short kick-off time of a relevant device and being excellent in removing dissolved substances or suspended matter- catching performance. SOLUTION: This carrier for microorganisms has a structure of doubly implanted fibers in which cord-like parts protruding in two-way or more directions from axial stem materials 1 have raised fiber 3 implanted on each core material 2 in the parts, therefore being capable of easily catching microorganisms useful for improving water quality. It is preferable that the cord-like parts have appropriate stiffness so as to be able to moderately quiver in a water current, etc.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】本発明は、新規な微生物担体に関
する。さらに詳しくは、装置の立上がり時間が短く溶解
物質の除去や懸濁物質の捕捉性能に優れた水処理や、特
定物質を製造するためのバイオリアクターに好適に利用
される新規な微生物担体に関するものである。FIELD OF THE INVENTION The present invention relates to a novel microbial carrier. More specifically, the present invention relates to a novel microbial carrier which is suitable for use in water treatment, which has a short rise-up time of the device and excellent ability to remove dissolved substances and capture suspended substances, and a bioreactor for producing specific substances. is there.

【０００２】[0002]

【従来の技術】従来、下水、産業廃水、水道原水のよう
な汚染水を浄化する方法として生物膜法があり、この微
生物を担持させる微生物担体として、ハニカム構造体、
波板、多孔円板等が用いられている。この他に、特公平
７−１０３９４号公報には、房状繊維を芯材から放射状
に突出させた廃水処理装置用の接触材が知られている。
また、特開平７−８０４９０号公報および特開平７−２
６５８９４号公報には、波板や多孔基材に繊維を静電植
毛した廃水処理用の接触材が知られている。2. Description of the Related Art Conventionally, there is a biofilm method as a method for purifying contaminated water such as sewage, industrial wastewater, and tap water, and a honeycomb structure is used as a microorganism carrier for supporting this microorganism.
Corrugated plates, porous discs, etc. are used. In addition to this, Japanese Patent Publication No. 7-10394 discloses a contact material for a wastewater treatment device in which tufted fibers are radially projected from a core material.
In addition, JP-A-7-80490 and JP-A-7-2
Japanese Patent No. 65894 discloses a contact material for wastewater treatment in which fibers are electrostatically planted on a corrugated plate or a porous substrate.

【０００３】しかしながらハニカム構造体、波板等の平
坦な表面を持つシートを組み合わせたり変形したりした
担体では、担体が占める単位容積当たりの微生物の付着
量が少なく、一旦付着してもすぐ剥離してしまう等の問
題点があり、処理効率の向上が求められていた。多孔円
板の場合は、平坦な表面のシートに比べれば微生物の付
着する量は多くなるが、初期の付着性が低く装置の立上
がりに長時間を必要とするものであった。さらに、円板
の半径方向で水流が異なり中心部の流速が低い部分では
汚泥による閉塞が起こりやすく逆洗再生も困難であるた
め、閉塞部分への汚泥の堆積により処理性能が低下する
という欠点があった。また、懸濁物質もほとんど捕捉さ
れないため、懸濁物質濃度を低下させる効果は期待でき
ないものであった。However, in a carrier obtained by combining or deforming a sheet having a flat surface such as a honeycomb structure or a corrugated plate, the amount of adhering microorganisms per unit volume occupied by the carrier is small, and even if once adhered, it is immediately peeled off. Therefore, there is a problem in that the processing efficiency is improved. In the case of a porous disc, the amount of microorganisms attached is larger than that of a sheet having a flat surface, but the initial adhesiveness is low and it takes a long time to start up the apparatus. Furthermore, since the water flow is different in the radial direction of the disc and clogging with sludge is likely to occur in the central part where the flow velocity is low and backwash regeneration is difficult, the sludge accumulation on the clogging part reduces the treatment performance. there were. Further, since suspended substances are hardly captured, the effect of reducing the concentration of suspended substances could not be expected.

【０００４】一方、特公平７−１０３９４号公報に記載
された担体は、房状糸に付着した微生物で処理を行うも
のであるが、多孔円板の場合と同様、初期の付着性が低
く装置の立上がりに長時間を必要とし、懸濁物質もほと
んど捕捉されないため、懸濁物質濃度を低下させる効果
は期待できないものであった。On the other hand, the carrier described in Japanese Examined Patent Publication No. 7-10394 treats microorganisms attached to tufted filaments, but like the porous disc, the initial adhesiveness is low and the apparatus Since it takes a long time to rise and the suspended solids are hardly captured, the effect of lowering the suspended solids concentration could not be expected.

【０００５】また、特開平７−８０４９０号公報および
特開平７−２６５８９４号公報に記載された担体は、担
体の形が波板や多孔基材であるため嵩ばり、処理槽の限
られた空間に多くの担体を入れることが困難なため、微
生物の付着量に限界があり、効率的な処理ができないも
のであった。また、担体自体の動きはほとんどなく一旦
微生物が付着すると微生物の増殖とともにその上に微生
物が堆積していくばかりで、特に担体内部において担体
同志の接触による活性の落ちた微生物の適度な更新がで
きないため、使用中に浄化性能が低下するという欠点が
あった。このため、性能が低下した時点で担体を新しい
ものに交換するか、洗浄を行う手間がかかり、安定した
連続処理ができず、ランニングコストの高いものであっ
た。Further, the carriers described in JP-A-7-80490 and JP-A-7-265894 are bulky because the shape of the carrier is a corrugated plate or a porous substrate, and the space of the treatment tank is limited. Since it is difficult to put a large amount of carrier into the cell, there is a limit to the amount of adhering microorganisms, which makes efficient treatment impossible. In addition, the carrier itself hardly moves, and once the microorganism adheres, the microorganism only grows and accumulates on the microorganism, and it is not possible to appropriately update the microorganism whose activity has been reduced due to contact between the carriers, especially inside the carrier. Therefore, there is a drawback that the purification performance is lowered during use. For this reason, it is troublesome to replace the carrier with a new one when the performance is deteriorated or to wash it, and stable continuous treatment cannot be performed, resulting in high running cost.

【０００６】[0006]

【発明が解決しようとする課題】本発明者らは上記欠点
のない担体について鋭意検討した結果、次の発明に到達
した。本発明の目的は、装置の立上がり時間が短く溶解
物質の除去や懸濁物質の捕捉性能に優れた微生物担体を
提供することにある。DISCLOSURE OF THE INVENTION The inventors of the present invention have made earnest studies on a carrier which does not have the above-mentioned drawbacks, and have arrived at the following invention. It is an object of the present invention to provide a microbial carrier which has a short apparatus startup time and is excellent in the ability to remove dissolved substances and capture suspended substances.

【０００７】[0007]

【課題を解決するための手段】本発明は、基本的に「芯
となる素材に立毛した繊維が存在するコード状物が、軸
となる素材から２方向以上に出ている二重立毛構造を有
することを特徴とする微生物担体。」により、その目的
が達成される。SUMMARY OF THE INVENTION The present invention basically provides a double napped structure in which a cord-like material in which napped fibers are present in a core material protrudes in two or more directions from a shaft material. The object is achieved by the microbial carrier characterized by having ".

【０００８】本発明で用いうる軸となる素材としては、
軽量で耐久性に優れるという点からポリアミド系、ポリ
エステル系、ポリオレフィン系、ポリビニルアルコール
系、ポリ塩化ビニル、ポリ塩化ビニリデン等の公知の高
分子系素材、およびこれらの複数の組み合わせが好まし
いが、綿、絹、麻、羊毛などの天然繊維や天然素材、あ
るいは炭素、金属等の無機系素材でもよい。また形態と
しては紐状、ロープ状が好ましく、その太さや本数は目
的により変わりうる。トータル繊度が１，０００〜２
０，０００デニールの高分子系素材、天然素材、あるい
はトータルの外径が０．５〜５ｍｍの無機系素材が好ま
しい。また軸となる素材は、水流等により適度に揺動可
能であることが好ましい。As the material of the shaft which can be used in the present invention,
From the viewpoint of lightweight and excellent durability, polyamide-based, polyester-based, polyolefin-based, polyvinyl alcohol-based, polyvinyl chloride, known polymer-based materials such as polyvinylidene chloride, and a combination of a plurality of these are preferable, but cotton, Natural fibers or materials such as silk, hemp, and wool, or inorganic materials such as carbon and metal may be used. Further, the shape is preferably a cord shape or a rope shape, and the thickness and the number thereof can be changed depending on the purpose. Total fineness of 1,000 to 2
A polymer material having a denier of 10,000, a natural material, or an inorganic material having a total outer diameter of 0.5 to 5 mm is preferable. Further, it is preferable that the material for the shaft can be appropriately swung by a water flow or the like.

【０００９】本発明の芯となる素材としては、軽量で耐
久性に優れるという点からポリアミド系、ポリエステル
系、ポリオレフィン系、ポリビニルアルコール系、ポリ
塩化ビニル、ポリ塩化ビニリデン等の公知の高分子材
料、およびこれらの複数の組み合わせが好ましいが、
綿、絹、麻、羊毛などの天然繊維や天然素材、あるいは
炭素、金属等の無機系素材でもよい。また形態としては
繊維状、棒状が好ましく、その太さや本数は目的により
変わりうる。トータル繊度が２００〜１０，０００デニ
ールの高分子系素材、天然素材、あるいはトータルの外
径が０．５〜５ｍｍの無機系素材、棒状高分子系素材が
好ましい。The core material of the present invention is a known polymer material such as polyamide-based, polyester-based, polyolefin-based, polyvinyl alcohol-based, polyvinyl chloride, polyvinylidene chloride, etc. from the viewpoint of being lightweight and excellent in durability. And combinations of a plurality of these are preferred,
Natural fibers and materials such as cotton, silk, hemp, and wool, or inorganic materials such as carbon and metal may be used. The form is preferably fibrous or rod-like, and the thickness and the number thereof can be changed depending on the purpose. A polymer material having a total fineness of 200 to 10,000 denier, a natural material, an inorganic material having a total outer diameter of 0.5 to 5 mm, or a rod-shaped polymer material is preferable.

【００１０】また、該コード状物は軸となる素材から２
方向以上に出ている構造を有することが必要である。こ
こでいう方向とは、軸となる素材の長さ方向に対する垂
直面における軸となる素材を原点としたコード状物が延
びる方向である。つまり、前記垂直面上において、１方
向にだけコード状物が出ないようにすることが肝要であ
る。なぜなら、隣接する軸となる素材間でのコード状物
の接触が不十分となったり、水流とコード状物との接触
効率が悪くなったりするからである。また、該方向のな
す角度が５°以下なら、実質上同方向であり好ましくな
い。なお、２方向以上なら特に限定されるものではな
く、ほぼ放射状対称であることが好ましい。また、芯と
なる素材と軸となる素材のなす角度は直角に近い方が好
ましいが、特に限定されるものではなく、また、柔軟に
しなって角度が変わっても良い。Further, the cord-like material is made of a material that serves as a shaft.
It is necessary to have a structure projecting beyond the direction. The direction here is the direction in which the cord-shaped material extends from the origin of the material serving as the axis in the plane perpendicular to the longitudinal direction of the material serving as the axis. That is, it is important to prevent the cord-like material from appearing in only one direction on the vertical surface. This is because the contact of the cord-like material between the adjacent shaft materials becomes insufficient, or the contact efficiency between the water flow and the cord-like material becomes poor. If the angle formed by the directions is 5 ° or less, the directions are substantially the same, which is not preferable. It should be noted that it is not particularly limited as long as it is in two or more directions, and it is preferable that it has substantially radial symmetry. The angle between the core material and the axis material is preferably close to a right angle, but is not particularly limited, and the angle may be changed by making it flexible.

【００１１】本発明のコード状物とは、芯となる素材に
立毛した繊維が存在しているものをいう。The cord-like material of the present invention refers to a material in which napped fibers are present in a core material.

【００１２】本発明の立毛した繊維の素材としては、炭
素繊維、無機繊維、活性炭繊維や、綿、絹、麻、羊毛な
どの天然繊維、あるいは繊維形成能を有する高分子物質
であるナイロン６、ナイロン６６、ナイロン１２、共重
合ナイロン等のポリアミド、芳香族ポリアミド、ポリエ
チレンテレフタレート、共重合ポリブチレンテレフタレ
ートなどのポリエステル、全芳香族ポリエステル、ポリ
エチレン、ポリプロピレン等のポリオレフィン、ポリウ
レタン、ポリアクリロニトリル、ポリ塩化ビニル、ポリ
ビニルアルコール、ビニル重合体、ポリ塩化ビニリデ
ン、ポリハイドロサルファイト、ポリフッ化エチレン、
共重合ポリフッ化エチレン、ポリオキシメチレン等が挙
げられる。これらの中では炭素繊維、活性炭繊維、ポリ
塩化ビニル、ポリ塩化ビニリデンがより好ましい。これ
ら繊維の種類の組み合わせや高分子物質の複数を組み合
わせた芯鞘構造、多重芯鞘構造、海島構造、バイメタル
構造などの複合繊維も目的に応じて用いられる。繊維形
状はストレート糸の他、捲縮糸でもよく、また断面形状
は、円形のみならず、異径断面形状でもよい。繊維の太
さは用途によって変わりうるので特に限定されるもので
はないが、一例を挙げるならば、上限値としては５００
デニール以下が好ましく、下限値としては０．０１デニ
ール以上が好ましい。Materials for the napped fibers of the present invention include carbon fibers, inorganic fibers, activated carbon fibers, natural fibers such as cotton, silk, hemp, and wool, or nylon 6, which is a polymer substance having a fiber-forming ability, Polyamide such as nylon 66, nylon 12, copolymer nylon, aromatic polyamide, polyethylene terephthalate, polyester such as copolymer polybutylene terephthalate, wholly aromatic polyester, polyethylene, polyolefin such as polypropylene, polyurethane, polyacrylonitrile, polyvinyl chloride, Polyvinyl alcohol, vinyl polymer, polyvinylidene chloride, polyhydrosulfite, polyfluoroethylene,
Copolymerized polyfluorinated ethylene, polyoxymethylene, etc. may be mentioned. Among these, carbon fiber, activated carbon fiber, polyvinyl chloride, and polyvinylidene chloride are more preferable. Composite fibers having a core-sheath structure, a multi-core-sheath structure, a sea-island structure, a bimetal structure, etc., in which a combination of these fiber types or a plurality of polymer substances are combined are also used according to the purpose. The fiber shape may be a straight yarn or a crimped yarn, and the cross-sectional shape may be not only circular but also different-diameter cross-sectional shape. The thickness of the fiber is not particularly limited as it may vary depending on the use, but as an example, the upper limit is 500.
It is preferably denier or less, and the lower limit value is preferably 0.01 denier or more.

【００１３】また、本発明の立毛した繊維とは、芯とな
る素材への繊維の挟み込み、芯となる素材と繊維との交
絡、接着剤による接着、熱融着、およびこれらの組み合
わせなどにより一体化されているか、あるいは繊維自身
は芯となる素材の一部を外周方向へ引き出したものであ
り、芯となる素材と立毛した繊維が構造的あるいは材質
的に異なっていても同一でも良い。繊維の立毛状態は、
先端に自由端を有する短繊維状、ループ状およびこれら
の組み合わせである。ここで、先端に自由端を有する短
繊維状の場合は、担体の設置初期における微生物の捕捉
性能に優れ、定常処理時の懸濁物質の捕捉性と自己洗浄
性とのバランスがよいためより好ましい。さらに、立毛
した繊維の根元から自由端までの長さは、用途や繊維の
太さによって変わりうるので特に限定されるものではな
いが、酸素、基質、微生物代謝物質の拡散効率を考慮し
て０．５〜１５ｍｍが好ましく、また、例えば繊維の太
さが０．０１〜３０デニールの場合、０．５〜８ｍｍが
好ましく、より好ましくは１〜４ｍｍであり、繊維の太
さが３０〜５００デニールの場合、３〜１５ｍｍが好ま
しく、より好ましくは３〜１０ｍｍである。芯となる素
材の長さ方向における繊維の立毛密度は、被処理水の水
質、繊維の形状、太さ、立毛状態等に応じて変わりうる
が、おおよそ２０〜２０万本／ｃｍの範囲が好ましく、
また、例えば繊維の太さが０．０１〜３０デニールの場
合、２００〜２０万本／ｃｍが好ましく、より好ましく
は２０００〜２０万本／ｃｍであり、繊維の太さが３０
〜５００デニールの場合、２０〜２万本／ｃｍが好まし
く、より好ましくは２００〜２万本／ｃｍである。２０
本／ｃｍ以下では微生物の付着量の増加および懸濁物質
の効率的な捕捉が期待できず、また２０万本／ｃｍ以上
では、立毛している繊維間に空隙が少なくなり、繊維間
に付着した微生物への酸素および基質等の拡散等が不十
分になり、浄化性能が低下してしまう。繊維の立毛方向
は、特に限定されるものではないが、芯となる素材の長
さ方向に対して４５〜９０°の角度で芯となる素材から
離れていることが好ましい。The napped fibers of the present invention are integrated by interposing the fibers in the core material, entanglement of the core material with the fibers, adhesion with an adhesive, heat fusion, and a combination thereof. The fiber itself is made into a core, or the fiber itself is a part of the core material drawn out in the outer peripheral direction, and the core material and the napped fiber may be structurally or materially different or the same. The napped state of the fiber is
It is a short fiber shape having a free end at the tip, a loop shape, or a combination thereof. Here, in the case of a short fiber having a free end at the tip, it is more preferable because it has an excellent microorganism-capturing performance in the initial stage of setting the carrier, and has a good balance between the trapping property of the suspended substance during the stationary treatment and the self-cleaning property. . Further, the length from the root to the free end of the napped fiber is not particularly limited as it can change depending on the use and the thickness of the fiber, but it is 0 in consideration of diffusion efficiency of oxygen, substrate and microbial metabolite. 0.5 to 15 mm is preferable, and for example, when the fiber thickness is 0.01 to 30 denier, 0.5 to 8 mm is preferable, more preferably 1 to 4 mm, and the fiber thickness is 30 to 500 denier. In the case of, it is preferably 3 to 15 mm, more preferably 3 to 10 mm. The napped density of the fibers in the length direction of the core material may vary depending on the water quality of the water to be treated, the shape of the fibers, the thickness, the napped state, etc., but is preferably in the range of about 200 to 200,000 fibers / cm. ,
Further, for example, when the fiber thickness is 0.01 to 30 denier, the fiber thickness is preferably 200 to 200,000 fibers / cm, more preferably 2000 to 200,000 fibers / cm, and the fiber thickness is 30.
In the case of ˜500 denier, it is preferably 20 to 20,000 lines / cm, and more preferably 200 to 20,000 lines / cm. 20
If it is less than this / cm, it is not possible to expect an increase in the amount of attached microorganisms and efficient trapping of suspended matter, and if it is more than 200,000 / cm, there will be less voids between the napped fibers, and there will be adhesion between the fibers. Diffusion of oxygen and substrates into the microorganisms becomes insufficient and the purification performance deteriorates. The napped direction of the fibers is not particularly limited, but it is preferable that the fibers are separated from the core material at an angle of 45 to 90 ° with respect to the length direction of the core material.

【００１４】また、本発明の繊維を芯となる素材から立
毛させる方法としては、繊維がループ状の場合は、繊維
にループを形成しつつ芯となる素材に挟み込む方法や、
芯となる素材から芯となる素材の外周方向へ引き出す方
法が好ましく、また、繊維が先端に自由端を有する短繊
維状の場合、繊維種や繊維長等のコントロールが容易で
あることから、静電植毛あるいは複数本の芯となる素材
に繊維の途中部分を挟み込むシェニール加工を行う方法
が好ましい。また、シェニール加工において、立毛した
繊維に適当な硬軟度を付与させて、かつ繊維の脱落を防
止するために樹脂を使用することも好ましい。As the method for raising the fibers of the present invention from the core material, when the fibers are in a loop shape, a method of forming a loop in the fibers and sandwiching the fibers with the core material,
It is preferable to pull out the core material from the core material to the outer peripheral direction, and when the fiber is a short fiber having a free end at the tip, it is easy to control the fiber type and fiber length. A method of performing chenille processing by sandwiching an intermediate portion of the fiber in a material that becomes electro-planted hair or a plurality of cores is preferable. In the chenille processing, it is also preferable to use a resin in order to impart appropriate hardness and softness to the napped fiber and prevent the fiber from falling off.

【００１５】本発明のコード状物は、水流等によって適
度に揺動可能な剛軟度を有することが好ましく、ＪＩＳ
Ｌ１０８５記載の４５°カンチレバ法による測定におい
て４ｃｍ以上であることが好ましく、より好ましくは６
ｃｍ以上、さらに好ましくは８ｃｍ以上である。剛軟度
が４ｃｍ以下の場合、隣り合うコード状物同士が絡み合
って二重立毛構造が保てなくなるため、微生物担体とし
ての役割を果たさなくなる。なおここで、カンチレバ法
による測定であるが、コード状物の１本をカンチレバ形
試験装置上で緩やかに滑らせることによって測定した。It is preferable that the cord-like material of the present invention has such a flexibility that it can be appropriately swung by a water flow or the like.
It is preferably 4 cm or more, more preferably 6 cm in the measurement by the 45 ° cantilever method described in L1085.
It is not less than cm, more preferably not less than 8 cm. When the bending resistance is 4 cm or less, adjacent cord-shaped materials are entangled with each other and the double napped structure cannot be maintained, and thus, they do not serve as a microorganism carrier. Here, the measurement by the cantilever method was performed by gently sliding one cord-like material on a cantilever type testing device.

【００１６】本発明の軸となる素材とコード状物とは、
軸となる素材へのコード状物の挟み込み、軸となる素材
とコード状物の交絡、接着剤による接着、熱融着、およ
びこれらの組み合わせなどにより一体化されているもの
である。コード状物が軸となる素材に挟み込まれている
構造や複数の軸となる素材と交絡している構造は、使用
中にコード状物が脱落しにくいためより好ましい。軸と
なる素材と一体化されたコード状物の出ている状態は、
先端に自由端を有する棒状、ループ状およびこれらの組
み合わせである。ここで、先端に自由端を有する棒状の
コード状物であれば、軸となる素材近傍の微生物への酸
素や基質の十分な供給が可能であり、また、コード状物
同志の接触によって剥離された汚泥が担体外に確実に脱
落し、閉塞が起こりにくいためより好ましい。自由端を
有するコード状物の場合、コード状物の根元から自由端
までの長さは、５ｍｍ以上が好ましく、より好ましくは
１ｃｍ以上、さらに好ましくは２ｃｍ以上である。５ｍ
ｍ以下では、コード状物の揺動が起こらず、自己洗浄性
が悪く、浄化性能が低下する。軸となる素材の長さ方向
におけるコード状物の立毛密度は、特に限定されるもの
ではなく、被処理水の性質、コード状物の形状、用途等
に応じて調節すればよいが、０．５〜２０本／ｃｍが好
ましく、１〜１５本／ｃｍがより好ましい。コード状物
の立毛方向は特に限定されるものではないが、軸となる
素材の長さ方向に対して４５〜９０°の角度で軸となる
素材から離れていることが好ましい。The material and the cord-like material which are the core of the present invention,
It is integrated by sandwiching the cord-like material into the material serving as the shaft, entanglement of the material serving as the shaft and the cord-shaped material, bonding with an adhesive, heat fusion, and the like. A structure in which the cord-like material is sandwiched by a material serving as a shaft or a structure in which the cord-shaped material is entangled with the material serving as a plurality of shafts is more preferable because the cord-shaped material is less likely to fall off during use. The state of the cord-like material that is integrated with the material that is the axis is
It is a rod-like shape having a free end at the tip, a loop-like shape, or a combination thereof. Here, if a rod-shaped cord having a free end is provided, it is possible to sufficiently supply oxygen and a substrate to microorganisms in the vicinity of the shaft material, and the cords are separated by contact with each other. It is more preferable that the sludge will surely drop out of the carrier and clogging will not easily occur. In the case of a cord-shaped product having a free end, the length from the root of the cord-shaped product to the free end is preferably 5 mm or more, more preferably 1 cm or more, further preferably 2 cm or more. 5m
If it is less than m, the cord-like material will not swing, the self-cleaning property will be poor, and the purification performance will be deteriorated. The napped density of the cord-shaped material in the longitudinal direction of the material to be the axis is not particularly limited and may be adjusted according to the property of the water to be treated, the shape of the cord-shaped material, the application, etc. 5 to 20 lines / cm are preferable, and 1 to 15 lines / cm are more preferable. The napped direction of the cord-shaped material is not particularly limited, but it is preferable that the cord-shaped material is separated from the axial material at an angle of 45 to 90 ° with respect to the length direction of the axial material.

【００１７】本発明品は、好ましくは接触曝気方式等の
水処理装置、生物脱臭装置、環境用水の直接浄化、ある
いは特定物質を製造するためのバイオリアクター等に好
適に用いられる。水処理装置では、コード状物同士が被
処理水の流れにより揺動して適度に接触するような配置
で処理装置内に固定する方法が好ましく用いられる。こ
の場合の接触は、同一の軸となる素材上のコード状物同
士でもよいし、あるいは隣り合う軸となる素材上のコー
ド状物同士でもよい。また、生物脱臭装置では、担体を
装置内に隙間なく吊り下げ、悪臭成分を溶解した水を流
下させる方法が好ましく用いられる。また、環境用水の
直接浄化では、水流と溶存酸素を確保できる適所に担体
を設置する方法が好ましく用いられる。また、バイオリ
アクターでは、特定微生物を高濃度に保持する目的で使
用され、リアクター内の適所に担体を設置する方法が好
ましく用いられる。The product of the present invention is preferably used for a water treatment apparatus such as a contact aeration system, a biological deodorizer, a direct purification of environmental water, or a bioreactor for producing a specific substance. In the water treatment device, a method is preferably used in which the cords are fixed in the treatment device in such a manner that the cords oscillate due to the flow of the water to be treated and come into proper contact with each other. In this case, the contacts may be cord-shaped objects on the same axis material, or may be cord-shaped objects on the adjacent axis material. Further, in the biological deodorizing apparatus, a method of suspending the carrier in the apparatus without any space and flowing down the water in which the malodorous component is dissolved is preferably used. In addition, in the direct purification of environmental water, a method in which a carrier is installed in a suitable place where a water flow and dissolved oxygen can be secured is preferably used. Further, in a bioreactor, a method of holding a specific microorganism at a high concentration is used, and a method of installing a carrier in an appropriate place in the reactor is preferably used.

【００１８】[0018]

【実施例】以下の実施例によって本発明をさらに詳細に
説明するが、本発明はこれらの実施例により限定される
ものではない。The present invention will be described in more detail with reference to the following examples, but the present invention is not limited to these examples.

【００１９】実施例１ ポリエステル製の繊維（単糸繊度８デニール、繊維長４
ｍｍ）をポリエステル製の芯となる素材（トータル繊度
３００デニール）に静電植毛（植毛長さ２ｍｍ）するこ
とにより、剛軟度が４５゜カンチレバ法による測定にお
いて約１０ｃｍであるコード状物を得た。次いでこのコ
ード状物を約８ｃｍに複数切断し、それらのほぼ中央部
を２本の軸となる素材の間に挟み込み、ねじって固定し
て軸となる素材に対して垂直方向に、かつほぼ放射状対
称に出させて、二重立毛構造を有する微生物担体を得
た。この時の軸となる素材上でのコード状物の密度は７
本／ｃｍにした。この担体（長さ３０ｃｍ）を容量６リ
ットルの接触曝気槽の中に１０ｃｍの間隔を空けて縦方
向に４本配置した。種汚泥添を添加した後、有機成分、
アンモニア態窒素、懸濁物質（ラジオライト）を主成分
とした人工排水を表１にあるＢＯＤ負荷で供給し、接触
曝気処理槽、沈殿槽を経た処理水中のＢＯＤ濃度および
懸濁物質濃度の測定を行った。Example 1 Polyester fiber (single yarn fineness 8 denier, fiber length 4
(mm) is electrostatically flocked (flock length 2 mm) to a polyester core material (total fineness 300 denier) to obtain a cord-like material having a bending resistance of about 10 cm as measured by the 45 ° cantilever method. It was Next, cut this cord into multiple pieces of about 8 cm, sandwich the center part between two shaft materials, and fix them by twisting them in a direction perpendicular to the shaft material and in a substantially radial direction. The microbial carriers having a double napped structure were obtained by symmetrically taking out. At this time, the density of the cord-like material on the material used as the axis is 7
Book / cm. Four carriers (30 cm in length) were arranged in the vertical direction in a contact aeration tank having a capacity of 6 liters at intervals of 10 cm. After adding seed sludge addition, organic components,
Artificial wastewater mainly composed of ammonia nitrogen and suspended substances (radiolite) was supplied at the BOD load shown in Table 1, and the BOD concentration and suspended substance concentration in the treated water that passed through the contact aeration treatment tank and sedimentation tank were measured. I went.

【００２０】[0020]

【表１】 実施例２ 実施例１と同様の方法で、剛軟度が４５゜カンチレバ法
による測定において約３ｃｍであるコード状物を得た。
実施例１と同様の条件で処理を行い、接触曝気処理槽、
沈殿槽を経た処理水中のＢＯＤ濃度および懸濁物質濃度
の測定を行った。[Table 1] Example 2 In the same manner as in Example 1, a cord-like material having a bending resistance of about 3 cm as measured by the 45 ° cantilever method was obtained.
Treatment is carried out under the same conditions as in Example 1, and a contact aeration treatment tank,
The BOD concentration and suspended substance concentration in the treated water that passed through the settling tank were measured.

【００２１】比較例１ ポリ塩化ビニル製のハニカム構造体（表面積１．８
ｍ2 、見掛け容積６リットルの直方体）を接触曝気処理
槽に充填した。実施例１と同様の条件で処理を行い、接
触曝気処理槽、沈殿槽を経た処理水中のＢＯＤ濃度およ
び懸濁物質濃度の測定を行った。Comparative Example 1 Polyvinyl chloride honeycomb structure (surface area 1.8
The contact aeration treatment tank was filled with a rectangular parallelepiped of m 2 and an apparent volume of 6 liters. The treatment was performed under the same conditions as in Example 1, and the BOD concentration and the suspended substance concentration in the treated water that had passed through the contact aeration treatment tank and the precipitation tank were measured.

【００２２】実施例１、実施例２および比較例１の結果
を図１、２にまとめて比較した。The results of Examples 1 and 2 and Comparative Example 1 are summarized in FIGS.

【００２３】図１から明らかなように、比較例ではＢＯ
Ｄ除去が安定するまでに約３週間かかり、しかも特に高
負荷条件下において、付着していた微生物が一括して剥
離したため、ＢＯＤ除去性能が安定しなかった。一方、
本発明の微生物担体を用いた実施例１では、設置後速や
かに微生物が付着したため、約１週間で高いＢＯＤ除去
性能が得られ、その後の性能も定常処理時の自己洗浄の
効果で安定していた。また実施例２では、実施例１と同
様に装置の立上がりが早かったが、コード状物の剛軟度
が小さかったため、付着した微生物の荷重により担体が
棒状になってしまい、その結果ＢＯＤ除去性能が大きく
低下した。As is clear from FIG. 1, in the comparative example, BO
It took about 3 weeks until the removal of D became stable, and further, especially under a high load condition, the attached microorganisms were peeled off at once, so that the BOD removal performance was not stable. on the other hand,
In Example 1 using the microbial carrier of the present invention, the microorganisms adhered immediately after the installation, and thus a high BOD removal performance was obtained in about 1 week, and the subsequent performance was stable due to the self-cleaning effect during the steady treatment. It was Further, in Example 2, as in Example 1, the apparatus started up quickly, but the bending resistance of the cord-shaped material was small, so that the carrier became rod-shaped due to the load of the attached microorganisms, resulting in BOD removal performance. Has dropped significantly.

【００２４】また図２から明らかなように、本発明の微
生物担体を用いた実施例１では、処理水中の懸濁物質濃
度を低く維持できた。実施例２において、二重立毛構造
を保てなくなった時期から懸濁物質濃度が高くなったこ
とから、懸濁物質はコード状物に効率よく捕捉され後、
定常処理時の自己洗浄により汚泥として沈降していると
推察された。As is clear from FIG. 2, in Example 1 using the microbial carrier of the present invention, the concentration of suspended substances in the treated water could be kept low. In Example 2, since the concentration of the suspended substance increased from the time when the double napped structure could not be maintained, the suspended substance was efficiently captured by the cord-like material,
It is presumed that it was settled as sludge due to self-cleaning during steady processing.

【００２５】[0025]

【発明の効果】本発明は、上述したような構成を有する
ことにより以下の効果を生じる。According to the present invention, the following effects are obtained by having the above-described configuration.

【００２６】（１）本発明品は、繊維が広く外側に立毛
しており、水質浄化に有用な微生物を捕捉しやすい構造
になっているため、装置の運転開始後短期間で性能が安
定する。(1) In the product of the present invention, the fibers are broadly napped on the outside, and the structure is such that microorganisms useful for water purification can be easily captured. Therefore, the performance is stable within a short period after the start of operation of the device. .

【００２７】（２）従来の担体は、長期間の使用におい
て、汚泥による部分的な閉塞あるいは生物膜の一括剥離
に伴う浄化性能の低下が避けられなかったが、本発明品
では、水流によって担体同士が常時接触し合い、過剰に
ついた微生物を適度に脱落させるため、活性を失った微
生物が長時間担体表面に止まることがなく、担体に付着
した微生物に酸素や基質が十分拡散し、微生物の増殖環
境が好適に維持される。(2) Although the conventional carrier cannot avoid the deterioration of the purification performance due to the partial blockage by sludge or the collective separation of the biofilm in the long-term use, the carrier of the present invention is caused by the water flow. Since the microorganisms that are in constant contact with each other and the excessively attached microorganisms are appropriately removed, the microorganisms that have lost their activity do not stay on the carrier surface for a long time, oxygen and the substrate are sufficiently diffused in the microorganisms attached to the carrier, and The growth environment is preferably maintained.

【００２８】（３）従来の担体では、懸濁物質の捕捉
を、担体表面に形成された生物膜による吸着のみに依存
していたため、処理水中の懸濁物質濃度が高かったが、
本発明品では、被処理水中の懸濁物質も微生物と同様に
容易に捕捉され、汚泥として回収されるため、懸濁物質
濃度の低い処理水が得られる。(3) In the conventional carrier, since the trapping of the suspended substance depends only on the adsorption by the biofilm formed on the surface of the carrier, the suspended substance concentration in the treated water was high.
In the product of the present invention, suspended solids in the water to be treated are easily trapped and collected as sludge as in the case of microorganisms, so that treated water having a low concentration of suspended solids can be obtained.

【００２９】（４）本発明の微生物担体は、繊維の太
さ、長さ、立毛密度等のコントロールが容易であり、使
用条件に合わせて様々な構造の担体を作製することが可
能である。(4) The microbial carrier of the present invention allows easy control of fiber thickness, length, nap density, and the like, and carriers of various structures can be prepared according to the conditions of use.

【図面の簡単な説明】[Brief description of drawings]

【図１】 本発明の微生物担体を軸となる素材方向から
みた模式図である。FIG. 1 is a schematic view of a microbial carrier of the present invention viewed from a material direction that is an axis.

【図２】 本発明の微生物担体を軸となる素材と垂直の
方向からみた模式図である。FIG. 2 is a schematic view of the microbial carrier of the present invention viewed from a direction perpendicular to a material serving as an axis.

【図３】 実施例１、実施例２および比較例１の処理水
ＢＯＤの濃度変化を示したグラフである。FIG. 3 is a graph showing changes in the concentration of treated water BOD in Examples 1, 2 and Comparative Example 1.

【図４】 実施例１、実施例２および比較例１の処理水
懸濁物質の濃度変化を示したグラフである。FIG. 4 is a graph showing changes in the concentrations of the treated water suspension substances of Example 1, Example 2 and Comparative Example 1.

【符号の説明】[Explanation of symbols]

１：軸となる素材 ２：芯となる素材 ３：立毛した繊維 1: Material used as the axis 2: Material used as the core 3: Fibers that are napped

Claims (13)

【特許請求の範囲】[Claims] 【請求項１】 芯となる素材に立毛した繊維が存在する
コード状物が、軸となる素材から２方向以上に出ている
二重立毛構造を有することを特徴とする微生物担体。1. A microbial carrier characterized in that a cord-like material in which napped fibers are present in a core material has a double napped structure protruding from a core material in two or more directions. 【請求項２】 軸となる素材が揺動可能であることを特
徴とする請求項１に記載の微生物担体。2. The microorganism carrier according to claim 1, wherein the material serving as the shaft is swingable. 【請求項３】 立毛した繊維が自由端を有し、かつ該コ
ード状物が自由端を有することを特徴とする請求項１に
記載の微生物担体。3. The microbial carrier according to claim 1, wherein the napped fiber has a free end, and the cord-like material has a free end. 【請求項４】 立毛した繊維がループ状であり、かつコ
ード状物が自由端を有することを特徴とする請求項１に
記載の微生物担体。4. The microbial carrier according to claim 1, wherein the napped fibers are loop-shaped, and the cord-shaped material has a free end. 【請求項５】 コード状物の剛軟度がＪＩＳＬ１０８５
記載の４５°カンチレバ法による測定において６ｃｍ以
上であることを特徴とする請求項１に記載の微生物担
体。5. The bending resistance of the cord-like material is JIS L1085.
The microbial carrier according to claim 1, which is 6 cm or more in the measurement by the 45 ° cantilever method described above. 【請求項６】 コード状物の根元から自由端までの長さ
が２ｃｍ以上であることを特徴とする請求項１に記載の
微生物担体。6. The microbial carrier according to claim 1, wherein the length from the root to the free end of the cord-like material is 2 cm or more. 【請求項７】 繊維の立毛が静電植毛により得られたも
のであることを特徴とする請求項１に記載の微生物担
体。7. The microbial carrier according to claim 1, wherein the napped fibers are obtained by electrostatic flocking. 【請求項８】 繊維の立毛がシェニール加工により得ら
れたものであることを特徴とする請求項１に記載の微生
物担体。8. The microbial carrier according to claim 1, wherein the napped fibers are obtained by chenille processing. 【請求項９】 立毛した繊維の根元から自由端までの長
さが０．５〜８ｍｍであることを特徴とする請求項７に
記載の微生物担体。9. The microbial carrier according to claim 7, wherein the napped fiber has a length from a root to a free end of 0.5 to 8 mm. 【請求項１０】 芯となる素材の長さ方向における繊維
の立毛密度が２０００〜２０万本／ｃｍであることを特
徴とする請求項１に記載の微生物担体。10. The microbial carrier according to claim 1, wherein the napped density of the fibers in the length direction of the core material is 2000 to 200,000 fibers / cm. 【請求項１１】 請求項１に記載の微生物担体を用いた
ことを特徴とする生物処理装置。11. A biological treatment apparatus comprising the microbial carrier according to claim 1. 【請求項１２】 コード状物が出ている密度が１〜１５
本／ｃｍであることを特徴とする請求項１に記載の微生
物担体。12. The density of cord-like material is 1 to 15
The carrier for microorganisms according to claim 1, wherein the carrier is liters / cm. 【請求項１３】 芯となる素材が、繊維の束と樹脂によ
り一体化した構造を有することを特徴とする請求項１に
記載の微生物担体。13. The microbial carrier according to claim 1, wherein the core material has a structure in which a bundle of fibers and a resin are integrated.
JP8044732A 1996-03-01 1996-03-01 Carrier for microorganism and biological treatment device using the same Pending JPH09234067A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8044732A JPH09234067A (en) 1996-03-01 1996-03-01 Carrier for microorganism and biological treatment device using the same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8044732A JPH09234067A (en) 1996-03-01 1996-03-01 Carrier for microorganism and biological treatment device using the same

Publications (1)

Publication Number Publication Date
JPH09234067A true JPH09234067A (en) 1997-09-09

Family

ID=12699629

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8044732A Pending JPH09234067A (en) 1996-03-01 1996-03-01 Carrier for microorganism and biological treatment device using the same

Country Status (1)

Country Link
JP (1) JPH09234067A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000049140A3 (en) * 1999-02-19 2001-03-15 Vyzk Ustav Pivovarsky A Sladar Carrier of biomass, method of fermentation therewith and devices therefor
CN103332777A (en) * 2013-06-27 2013-10-02 江苏苏净集团有限公司 Dendriform water treatment filler

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2000049140A3 (en) * 1999-02-19 2001-03-15 Vyzk Ustav Pivovarsky A Sladar Carrier of biomass, method of fermentation therewith and devices therefor
CN103332777A (en) * 2013-06-27 2013-10-02 江苏苏净集团有限公司 Dendriform water treatment filler

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