JP2003010875A - Microorganism immobilized carrier - Google Patents
Microorganism immobilized carrierInfo
- Publication number
- JP2003010875A JP2003010875A JP2001200805A JP2001200805A JP2003010875A JP 2003010875 A JP2003010875 A JP 2003010875A JP 2001200805 A JP2001200805 A JP 2001200805A JP 2001200805 A JP2001200805 A JP 2001200805A JP 2003010875 A JP2003010875 A JP 2003010875A
- Authority
- JP
- Japan
- Prior art keywords
- microorganism
- immobilized carrier
- partition wall
- carrier
- cross
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- 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
Description
【0001】[0001]
【発明の属する技術分野】本発明は、生化学的に排水処
理を行う際に、表面に微生物を付着させて使用される微
生物固定化担体に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a microorganism-immobilized carrier which is used by attaching microorganisms to the surface when biochemically treating wastewater.
【0002】[0002]
【従来の技術】生物学的排水処理方法の一つとして、微
生物が付着された微生物固定化担体を槽内で流動させ、
同担体の表面に付着している微生物により有機物や窒素
を吸着、分解して処理する方法が用いられている。この
微生物固定化担体としては、親水性ゲル、多孔質中空樹
脂、ウレタンフォーム等が、用いられている。2. Description of the Related Art As one of biological wastewater treatment methods, a microorganism-immobilized carrier to which microorganisms are adhered is made to flow in a tank,
A method of adsorbing and decomposing organic substances and nitrogen by a microorganism adhering to the surface of the carrier is used. As the microorganism-immobilized carrier, hydrophilic gel, porous hollow resin, urethane foam, etc. are used.
【0003】多孔質中空樹脂は、材料が安価である上、成形
が容易なことから広く使用されている。この多孔質中空
樹脂としては、ポリプロピレン、ポリエチレン、等があ
げられる。ポリプロピレンは、微生物の付着量を増やす
ため、発泡成形し、多孔質体として用いられることが多
い。しかしながら、中空筒状の担体は、内部の汚泥の循
環が悪く、汚泥による閉塞が起こり易く、筒内部の汚泥
（微生物）が有効に働かないため、処理性能が低下する
という欠点があった。この閉塞を防止するためには、管
内における汚泥の流動性を保つためある程度以上の内径
を持たせることが必要であるが、内径を大きくとると比
表面積が低下することにより、見かけの担体体積あたり
の汚泥付着量が低下し、処理性能が落ちるという欠点を
有していた。[0003] The porous hollow resin is widely used because the material is inexpensive and the molding is easy. Examples of the porous hollow resin include polypropylene and polyethylene. Polypropylene is often used as a porous body by foam molding in order to increase the amount of microorganisms attached. However, the hollow cylindrical carrier has a drawback that the sludge inside is poorly circulated, clogging by the sludge is likely to occur, and sludge (microorganisms) inside the cylinder does not work effectively, so that the treatment performance is deteriorated. In order to prevent this blockage, it is necessary to have an inner diameter above a certain level in order to maintain the fluidity of the sludge in the pipe, but if the inner diameter is increased, the specific surface area decreases, However, it has a drawback that the amount of sludge adhered is decreased and the treatment performance is deteriorated.
【0004】このため、閉塞を防止するための改良が提案さ
れている。例えば、特開平１０−１７４９８９号公報に
開示されている微生物固定化担体は、外径≧管長となる
ようにすることが提案されている。この方法であると筒
内部の流動性が改善され閉塞しにくいとされている。特
開２０００−４１６６９号公報では、筒の中に隔壁を設
けることによって、大きい担体でも比表面積が大きくな
るとされている。特開平１０−３１４７８３号公報で
は、Ｃ字形状断面を持つ担体が、汚泥の閉塞がなく処理
性能が良好であるとされている。[0004] Therefore, improvements have been proposed to prevent blockages. For example, the microorganism-immobilized carrier disclosed in Japanese Patent Laid-Open No. 10-174989 has been proposed so that the outer diameter ≧ the tube length. According to this method, the fluidity inside the cylinder is improved and it is difficult to block the cylinder. In Japanese Patent Laid-Open No. 2000-41669, it is stated that the specific surface area is increased even with a large carrier by providing a partition in the cylinder. In Japanese Patent Laid-Open No. 10-314783, a carrier having a C-shaped cross section is said to have good treatment performance without clogging of sludge.
【0005】[0005]
【発明が解決しようとする課題】しかしながら、特開平
１０−１７４９８９号公報に開示されている微生物固定
化担体は、外径≧管長とする方法は、担体が扁平となる
ため流動性が著しく低下する。また、担体の大きさは、
汚泥から分離するセパレーター（スクリーン）の隙間間
隔より大きくしなければならず、小さいほうの管長をセ
パレーターの間隔に合わせると外形は更に大きくする必
要があり、比表面積が低下してしまう。However, in the microorganism-immobilized carrier disclosed in Japanese Unexamined Patent Publication No. 10-174989, the method in which the outer diameter is greater than or equal to the pipe length causes the carrier to be flat, resulting in a marked decrease in fluidity. . The size of the carrier is
It is necessary to make the gap larger than the gap between the separators (screens) separated from the sludge, and if the smaller pipe length is matched with the gap between the separators, it is necessary to further increase the outer shape, and the specific surface area decreases.
【0006】特開２０００−４１６６９号公報に開示されて
いるように、筒の中に隔壁を設ける方法では、比表面積
を大きくすることができるが、同径の筒状担体と比較す
ると汚泥が閉塞し易い問題があった。[0006] As disclosed in Japanese Unexamined Patent Publication No. 2000-41669, the method of providing partition walls in the cylinder can increase the specific surface area, but the sludge is blocked as compared with a cylindrical carrier having the same diameter. There was a problem that was easy to do.
【0007】特開平１０−３１４７８３号公報に開示されて
いるように、Ｃ字形状断面を持つ担体では、開口部が1
つしかないため液の交換を十分に行うため、開口部を広
げる必要がある。すると他の担体のエッジ部と担体内壁
がぶつかり、内壁に付着した汚泥を剥離させてしまうと
いう欠点があった。また、Ｃ字であるため、肉薄、ある
いは発泡体にすると強度がもろくなる欠点があった。[0007] As disclosed in Japanese Patent Application Laid-Open No. 10-314783, a carrier having a C-shaped cross section has one opening.
Since there is only one, it is necessary to widen the opening in order to sufficiently exchange the liquid. Then, there is a drawback that the edge portion of another carrier collides with the inner wall of the carrier and the sludge attached to the inner wall is separated. In addition, since it is C-shaped, there is a drawback that the strength becomes brittle when made thin or made of foam.
【0008】本発明は、表面に微生物を付着させて使用され
る微生物固定化担体において、比表面積が大きく、か
つ、汚泥の閉塞がなく、長期間良好な処理水質を維持で
きる担体を提供することを目的としている。[0008] The present invention provides a microorganism-immobilized carrier used by adhering microorganisms to the surface thereof, which has a large specific surface area, does not clog sludge, and can maintain good treated water quality for a long period of time. It is an object.
【0009】[0009]
【課題を解決するための手段】すなわち本発明の要旨
は、熱可塑性樹脂からなる筒状体の微生物固定化担体で
あって、該筒状体の長手方向中心線に垂直な断面の形状
が、少なくとも一部に切れ目の入った外周隔壁と、該外
周隔壁の内部を複数の空間に区画する内部隔壁とを有し
てなることを特徴とする微生物固定化担体にある。Means for Solving the Problems That is, the gist of the present invention is a tubular microorganism-immobilized carrier comprising a thermoplastic resin, the cross-sectional shape of which is perpendicular to the longitudinal centerline of the tubular body, A microorganism immobilization carrier characterized by comprising an outer peripheral partition wall having at least a partly cut and an inner partition wall partitioning the inside of the outer peripheral partition wall into a plurality of spaces.
【0010】前記筒状体の長手方向中心線に垂直な断面の形
状において、前記内部隔壁が、前記筒状体の概略中央部
から前記外周隔壁に向かって放射状に伸びていると、比
表面積を大きくとることができると同時に強度が向上す
るため好ましい。前記筒状体の長手方向中心線に垂直な
断面の形状において、前記内部隔壁によって仕切られた
空間の数が２〜６であると、汚泥が閉塞し難く好まし
い。前記微生物固定化担体の比重が０．８５〜１．２で
あると、良好に流動するため好ましい。[0010] In the shape of the cross section perpendicular to the longitudinal centerline of the tubular body, when the internal partition wall extends radially from the substantially central portion of the tubular body toward the outer partition wall, a specific surface area is increased. It is preferable because it can be made large and at the same time the strength is improved. In the shape of the cross section perpendicular to the longitudinal centerline of the tubular body, it is preferable that the number of spaces partitioned by the internal partition walls is 2 to 6 because sludge is unlikely to be blocked. It is preferable that the specific gravity of the microorganism-immobilized carrier is 0.85 to 1.2 because the carrier can flow well.
【0011】前記筒状体の外周部の最大径が３mm〜３０mmと
すること、前記筒状体の外径の最大値と、前記外周隔壁
の肉厚の比を４以上２０以下とすることは、比表面積を
大きくでき、かつ分離が容易となるため好ましい。前記
切れ目の長さと、前記外周隔壁の肉厚の比が３以下であ
ると、切れ目部分が他の担体とかみ合う事が無く好まし
い。前記切れ目の長さと、前記筒状体の外径の最大値と
の比が０．０５以上であると、汚泥が閉塞し難いため好
ましい。前記担体を流動床式生物処理に使用すると、良
好な流動性を示すため好ましい。The maximum diameter of the outer peripheral portion of the tubular body is 3 mm to 30 mm, and the ratio of the maximum outer diameter of the tubular body to the wall thickness of the outer peripheral partition wall is 4 or more and 20 or less. It is preferable because the specific surface area can be increased and the separation can be facilitated. When the ratio of the length of the cut and the wall thickness of the outer peripheral partition wall is 3 or less, the cut portion does not mesh with another carrier, which is preferable. It is preferable that the ratio of the length of the cut to the maximum value of the outer diameter of the tubular body is 0.05 or more, because sludge is unlikely to be blocked. It is preferable to use the carrier in a fluidized bed biological treatment because it shows good fluidity.
【0012】[0012]
【発明の実施の形態】以下本発明の形態例を説明する
が、本発明がそれらに限定解釈されるものではない。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below, but the present invention should not be construed as being limited thereto.
【0013】本発明に用いる熱可塑性樹脂は、ポリプロピレ
ン、ポリエチレン、ポリ塩化ビニル、エチレン−酢酸ビ
ニル共重合樹脂、ポリスチレン等があげられるが、これ
らに限定されるものではない。これらの熱可塑性樹脂
は、１種または２種以上組み合わせて用いることがで
き、ポリプロピレン、ポリエチレンなどが特に好まし
い。The thermoplastic resin used in the present invention includes, but is not limited to, polypropylene, polyethylene, polyvinyl chloride, ethylene-vinyl acetate copolymer resin, polystyrene and the like. These thermoplastic resins may be used either individually or in combination of two or more, with polypropylene and polyethylene being particularly preferred.
【0014】前述の熱可塑性樹脂と共に酸変性性熱可塑性樹
脂を用いると、担体の流動性が更に向上するため好まし
い。酸変性性熱可塑性樹脂としては、プロピレン−無水
マレイン酸共重合体（例えば三井化学（株）製、商品名
アドマー、三洋化成（株）製、商品名ユーメックス、三
菱化学（株）製、商品名モディック）、エチレン−メタ
クリル酸共重合体（アイオノマー樹脂、例えば三井デュ
ポンポリケミカル（株）製、商品名ハイミラン）、メタ
クリル酸メチル−メタクリル酸共重合体（三菱レイヨン
（株）製、商品名アクリペット）等があげられる。酸変
性熱可塑性樹脂は、１種または２種以上組み合わせて用
いることができる。酸変性ポリマーの含有量は、酸変成
量にもよるが、十分な親水性を与えるためには１０重量
％以上とすることが好ましく、前記酸変性熱可塑性樹脂
のみで担体を得ることもできる。[0014] It is preferable to use an acid-modified thermoplastic resin together with the above-mentioned thermoplastic resin because the fluidity of the carrier is further improved. As the acid-modified thermoplastic resin, a propylene-maleic anhydride copolymer (for example, Mitsui Chemicals, Inc., trade name Admer, Sanyo Kasei Co., Ltd., trade name Yumex, Mitsubishi Chemical Co., Ltd., trade name Modic), ethylene-methacrylic acid copolymer (ionomer resin, for example, Mitsui DuPont Polychemical Co., Ltd., trade name Himilan), methyl methacrylate-methacrylic acid copolymer (Mitsubishi Rayon Co., Ltd., trade name Acrypet) ) Etc. The acid-modified thermoplastic resin may be used alone or in combination of two or more. The content of the acid-modified polymer depends on the amount of acid modification, but it is preferably 10% by weight or more in order to provide sufficient hydrophilicity, and the carrier can be obtained only with the acid-modified thermoplastic resin.
【0015】また、他の成分として、炭酸カルシウム、タル
ク、ゼオライト、硫酸バリウム、酸化チタン、チタン酸
カリウム、水酸化アルミニウム等の比重調整材や、多孔
質化のためのアゾジカルボンアミド（ＡＤＣＡ）、ジニ
トロソペンタメチレンテトラミン（ＤＰＴ）、炭酸系な
どの発泡剤、発泡助剤、さらには適当な添加剤を含んで
いてもよい。[0015] Further, as other components, calcium carbonate, talc, zeolite, barium sulfate, titanium oxide, potassium titanate, a specific gravity adjusting material such as aluminum hydroxide, azodicarbonamide (ADCA) for porosity, It may contain dinitrosopentamethylenetetramine (DPT), a foaming agent such as a carbonic acid-based agent, a foaming auxiliary agent, and an appropriate additive.
【0016】本発明に用いる成型体は、上述の樹脂組成物
を、従来から使用されている周知の方法により成型すれ
ばよく、例えば押出し機を用いて容易に製造することが
でき、格別の装置や後処理も不要となり、廉価に製造可
能である。[0016] The molded body used in the present invention may be obtained by molding the above-mentioned resin composition by a well-known method that has been conventionally used, and can be easily manufactured using, for example, an extruder, and is a special apparatus. No post-treatment is required, and it can be manufactured at low cost.
【0017】本発明の微生物固定化担体の形状は、筒状体の
長手方向中心線に垂直な断面の形状において、外周隔壁
の少なくとも一部に切れ目を有し、さらに外周隔壁の内
部を複数の空間に区画する内部隔壁とを有してなる。内
部隔壁を有するため、同径の中空体と比較し、比表面積
を大きくとることができると同時に、外周隔壁部に切れ
目があるため、担体内部と、外部の液の交換がスムース
に進行し、汚泥の閉塞が極めて少なく、経時的に活性が
低下することがない。また、内部隔壁と外周隔壁が連結
されているため、切れ目があることによって外周隔壁が
崩壊するようなことも無い。[0017] The microorganism-immobilized carrier of the present invention has a shape of a cross section perpendicular to the longitudinal centerline of the tubular body, in which at least a part of the outer peripheral partition wall has a cut, and further the inside of the outer peripheral partition wall has a plurality of cuts. It has an internal partition dividing into a space. Since it has an internal partition wall, it can have a larger specific surface area compared to a hollow body of the same diameter, and at the same time, since there is a break in the outer peripheral partition wall, the exchange of liquid inside and outside the carrier proceeds smoothly, Clogging of sludge is extremely small, and activity does not decrease with time. Further, since the inner partition wall and the outer partition wall are connected, the outer partition wall does not collapse due to the break.
【0018】外周隔壁の切れ目の数は必ずしも限定されない
が、内部の複数の空間に対し一つずつ設けると、外部の
液が流入しやすいため好ましい。また、外周隔壁は、概
略円形もしくは多角形の形状が好ましく、例えば、円
形、楕円形、（正）三角形、（正）四角形、（正）五角
形、（正）六角形、星型、などが挙げられる。また、図
１２、図１３に示すような円形と多角形が組み合わさっ
た形状にしても構わない。[0018] The number of cuts in the outer peripheral partition wall is not necessarily limited, but it is preferable to provide one for each of a plurality of internal spaces because an external liquid easily flows in. Further, the outer peripheral partition wall preferably has a substantially circular or polygonal shape, and examples thereof include a circle, an ellipse, a (regular) triangle, a (regular) pentagon, a (regular) hexagon, and a star shape. To be Further, the shape may be a combination of a circle and a polygon as shown in FIGS. 12 and 13.
【0019】内部隔壁は、略中央から放射状に伸びると、各
空間の均一が保たれるため好ましい。また、内部隔壁に
よって仕切られた空間の数は、２〜６が好ましい。空間
の数が１、即ち隔壁がないと比表面積が大きくならな
い。また隔壁の数が７以上であると、隔壁間の角度が小
さくなりすぎ、汚泥が閉塞し易くなる。外周部の大きさ
にもよるが、内部隔壁の数は３または４が特に好まし
い。なお、内部隔壁は、図７〜図９に示すように、外周
隔壁を貫通し、外表面にまで突出していても構わない。
また、図１４に示すように、中央部に隔壁を設け、この
隔壁から放射状に伸び、外周隔壁と接する内部隔壁を用
いることも可能である。これらの断面形状の例として
は、表1及び図１〜１４のような大きさ及び形状が挙げ
られる。[0019] It is preferable that the inner partition wall extends radially from the substantially central portion because uniformity of each space is maintained. Moreover, the number of spaces partitioned by the internal partition wall is preferably 2 to 6. If the number of spaces is 1, that is, without partition walls, the specific surface area does not increase. If the number of partition walls is 7 or more, the angle between the partition walls becomes too small, and sludge is likely to be blocked. The number of internal partition walls is particularly preferably 3 or 4, depending on the size of the outer peripheral portion. The inner partition wall may penetrate the outer partition wall and project to the outer surface as shown in FIGS. 7 to 9.
Further, as shown in FIG. 14, it is also possible to provide a partition wall in the central portion and use an internal partition wall that extends radially from this partition wall and is in contact with the outer peripheral partition wall. Examples of these cross-sectional shapes include the sizes and shapes shown in Table 1 and FIGS.
【0020】[0020]
【表１】 [Table 1]
【0021】微生物固定化担体の比重を０．８５〜１．２に
調整することにより、同担体を流動床用として使用する
場合に好適な流動性が得られる。比重が０．９〜１．１
であると更に好ましい。[0021] By adjusting the specific gravity of the microorganism-immobilized carrier to 0.85 to 1.2, suitable fluidity can be obtained when the carrier is used for a fluidized bed. Specific gravity is 0.9 to 1.1
Is more preferable.
【0022】また、微生物固定化担体の外周部の最大径は３
mm〜３０mmが好ましく、４ｍｍ〜２０ｍｍが更に好まし
い。外周部の最大径がこれより小さいと、曝気槽から越
流する際の固液分離が難しくなり、３０mm以上では比表
面積が小さくなりすぎ、処理活性が低下する。[0022] The maximum diameter of the outer periphery of the microorganism-immobilized carrier is 3
mm to 30 mm is preferable, and 4 mm to 20 mm is more preferable. If the maximum diameter of the outer peripheral portion is smaller than this, solid-liquid separation becomes difficult when overflowing from the aeration tank, and if it is 30 mm or more, the specific surface area becomes too small and the treatment activity decreases.
【0023】また、微生物固定化担体の外周部の最大値と、
外隔壁の肉厚の比が４以上２０以下であることが好まし
い。前記比がこれ以下であるとであると、肉圧が厚くな
りすぎ汚泥の付着面積が低下するばかりでなく、使用す
る樹脂量も増加し、不経済である。一方、２０以下で
は、肉厚が薄くなりすぎ十分な強度が得られなくなる。[0023] Further, the maximum value of the outer periphery of the microorganism-immobilized carrier,
It is preferable that the thickness ratio of the outer partition wall is 4 or more and 20 or less. When the ratio is less than this, not only the meat pressure becomes too thick but the adhering area of sludge decreases, but also the amount of resin used increases, which is uneconomical. On the other hand, if it is 20 or less, the wall thickness becomes too thin to obtain sufficient strength.
【0024】また、外周隔壁の切れ目の長さと、外周隔壁の
肉厚の比が３以下であることが好ましい。切れ目の長さ
がこれ以上であると、担体のエッジ部が、他の担体の切
れ目の間に入り込み、連結体を形成してしまうことや、
エッジ部が他の担体の担体内壁にぶつかり、内壁に付着
した汚泥を剥離させてしまうことがある。[0024] Further, it is preferable that the ratio of the cut length of the outer peripheral partition wall to the thickness of the outer peripheral partition wall is 3 or less. If the length of the cut is more than this, the edge portion of the carrier may enter between the breaks of other carriers and form a connected body,
The edge portion may collide with the inner wall of the carrier of another carrier, and the sludge adhering to the inner wall may be peeled off.
【0025】また、外周隔壁の切れ目の長さと、外径の比が
０．０５以上であることが好ましい。前記比がこれ以下
であると、切れ目の長さが小さく、汚泥の閉塞を抑制す
るための内部の十分な流動性が得られない。[0025] Further, it is preferable that the ratio of the cut length of the outer peripheral partition wall to the outer diameter is 0.05 or more. If the ratio is less than this, the length of the cut is small, and sufficient internal fluidity for suppressing clogging of sludge cannot be obtained.
【0026】本発明の担体は、生物処理におけるろ材として
使用できる。特に流動床式生物処理用微生物固定化担体
として用いたときに極めて高い処理能力を示す。本発明
の担体は、好気槽または、嫌気槽で用いることができ
る。[0026] The carrier of the present invention can be used as a filter medium in biological treatment. Particularly, when it is used as a carrier for immobilizing microorganisms for fluidized bed type biological treatment, it exhibits extremely high treatment capacity. The carrier of the present invention can be used in an aerobic tank or an anaerobic tank.
【0027】以下本発明の実施の形態について具体的な実施
例及び比較例を挙げて詳細に説明する。[0027] Embodiments of the present invention will be described in detail below with reference to specific examples and comparative examples.
【0028】＜実施例１＞図１７に示す構成の装置にて、図
３に示す本発明の形態の担体を用いて処理を行った。担
体０．７Ｌを、３．５Ｌの曝気槽に入れ、種汚泥と混合
した後、２Ｌ／ｍｉｎで曝気しながら、人工廃水を原水
としてＣＯＤ負荷量に２ｋｇ−ＣＯＤ／ｍ３・日（６６
７ｍｇ-ＣＯＤ／Ｌ、滞留時間４時間）で処理を行い、
処理水のＣＯＤを測定した。<Example 1> [0028] Treatment was carried out in the apparatus having the configuration shown in Fig. 17 using the carrier of the embodiment of the present invention shown in Fig. 3. 0.7 L of the carrier was put in a 3.5 L aeration tank, mixed with seed sludge, and then aerated at 2 L / min while using artificial wastewater as raw water to reduce COD load to 2 kg-COD / m 3 · day (66
7 mg-COD / L, residence time 4 hours)
The COD of the treated water was measured.
【0029】＜比較例１＞図１５に示す、外周隔壁に切れ目
を持たない担体を用いた以外は実施例１と同様の試験を
行った。<Comparative Example 1> The same test as in Example 1 was performed, except that a carrier having no cuts was used as the outer peripheral partition wall as shown in FIG.
【0030】＜比較例２＞図１６に示す、円筒状担体を用い
た以外は実施例１と同様の試験を行った。<Comparative Example 2> The same test as in Example 1 was performed except that a cylindrical carrier as shown in FIG. 16 was used.
【0031】図１８に結果を示したように、実施例１の担体
は、処理を開始して３ヶ月たっても十分な処理性能が得
られた。これに対し、切れ目間隔を持たない比較例１の
担体は、１ヵ月後程度たつと内部が閉塞し、処理性能の
低下が認められた。また、筒状の比較例２の担体は、隔
壁を持つ担体と比較し、比表面積が小さく、十分な処理
性能が得られなかった。As shown in the results in FIG. 18, the carrier of Example 1 was able to obtain sufficient treatment performance even 3 months after the treatment was started. On the other hand, in the carrier of Comparative Example 1 having no gap interval, after about one month, the inside was clogged and the processing performance was deteriorated. In addition, the cylindrical carrier of Comparative Example 2 had a smaller specific surface area than the carrier having partition walls, and sufficient processing performance was not obtained.
【0032】[0032]
【発明の効果】本発明の微生物固定化担体によれば、外
周隔壁の内部を複数の空間に区画する内部隔壁を有する
ため、比表面積を大きくすることが可能で処理性能が高
く、また外周隔壁側面に切れ目があるため、閉塞も起こ
りにくいことより、長期間良好な処理性能を保つことが
できる。EFFECT OF THE INVENTION According to the microorganism-immobilized carrier of the present invention, since it has an internal partition wall that divides the inside of the outer partition wall into a plurality of spaces, it is possible to increase the specific surface area and the processing performance is high, and the outer partition wall is also provided. Since there is a break on the side surface, clogging is unlikely to occur, so that good processing performance can be maintained for a long time.
【図１】本発明の微生物固定化担体の一例を示す断面図
である。FIG. 1 is a cross-sectional view showing an example of a microorganism-immobilized carrier of the present invention.
【図２】本発明の微生物固定化担体の一例を示す断面図
である。FIG. 2 is a cross-sectional view showing an example of the microorganism-immobilized carrier of the present invention.
【図３】本発明の微生物固定化担体の一例を示す断面図
である。FIG. 3 is a cross-sectional view showing an example of the microorganism-immobilized carrier of the present invention.
【図４】本発明の微生物固定化担体の一例を示す断面図
である。FIG. 4 is a cross-sectional view showing an example of the microorganism-immobilized carrier of the present invention.
【図５】本発明の微生物固定化担体の一例を示す断面図
である。FIG. 5 is a cross-sectional view showing an example of the microorganism-immobilized carrier of the present invention.
【図６】本発明の微生物固定化担体の一例を示す断面図
である。FIG. 6 is a cross-sectional view showing an example of the microorganism-immobilized carrier of the present invention.
【図７】本発明の微生物固定化担体の一例を示す断面図
である。FIG. 7 is a cross-sectional view showing an example of the microorganism-immobilized carrier of the present invention.
【図８】本発明の微生物固定化担体の一例を示す断面図
である。FIG. 8 is a cross-sectional view showing an example of the microorganism-immobilized carrier of the present invention.
【図９】本発明の微生物固定化担体の一例を示す断面図
である。FIG. 9 is a cross-sectional view showing an example of the microorganism-immobilized carrier of the present invention.
【図１０】本発明の微生物固定化担体の一例を示す断面
図である。FIG. 10 is a cross-sectional view showing an example of the microorganism-immobilized carrier of the present invention.
【図１１】本発明の微生物固定化担体の一例を示す断面
図である。FIG. 11 is a cross-sectional view showing an example of the microorganism-immobilized carrier of the present invention.
【図１２】本発明の微生物固定化担体の一例を示す断面
図である。FIG. 12 is a cross-sectional view showing an example of the microorganism-immobilized carrier of the present invention.
【図１３】本発明の微生物固定化担体の一例を示す断面
図である。FIG. 13 is a cross-sectional view showing an example of the microorganism-immobilized carrier of the present invention.
【図１４】本発明の微生物固定化担体の一例を示す断面
図である。FIG. 14 is a cross-sectional view showing an example of the microorganism-immobilized carrier of the present invention.
【図１５】比較例１に使用した微生物固定化担体の断面
図である。15 is a cross-sectional view of the microorganism-immobilized carrier used in Comparative Example 1. FIG.
【図１６】比較例２に使用した微生物固定化担体の断面
図である。16 is a cross-sectional view of the microorganism-immobilized carrier used in Comparative Example 2. FIG.
【図１７】本発明の実施例１及び比較例１、２で使用し
た水処理装置を示す概略図である。FIG. 17 is a schematic view showing a water treatment device used in Example 1 of the present invention and Comparative Examples 1 and 2.
【図１８】本発明の実施例１及び比較例１、２の結果を
示すグラフである。FIG. 18 is a graph showing the results of Example 1 of the present invention and Comparative Examples 1 and 2.
１０ 水処理装置 １１ スクリーン １２ 担体 １３ 整流板 １４ 散気管 10 Water treatment equipment 11 screens 12 Carrier 13 Current plate 14 Air diffuser
Claims (9)
定化担体であって、該筒状体の長手方向中心線に垂直な
断面の形状が、少なくとも一部に切れ目の入った外周隔
壁と、該外周隔壁の内部を複数の空間に区画する内部隔
壁とを有してなることを特徴とする微生物固定化担体。1. A cylindrical microorganism-immobilized carrier made of a thermoplastic resin, wherein the shape of a cross section perpendicular to the longitudinal centerline of the cylindrical body is an outer peripheral partition wall in which at least a part is cut. A microorganism immobilization carrier, comprising: an inner partition that partitions the inside of the outer partition into a plurality of spaces.
面の形状において、前記内部隔壁は、前記筒状体の概略
中央部から前記外周隔壁に向かって放射状に伸びている
ことを特徴とする請求項１記載の微生物固定化担体。2. In the shape of the cross section perpendicular to the longitudinal centerline of the tubular body, the internal partition wall extends radially from the approximate center of the tubular body toward the outer partition wall. The microorganism immobilization carrier according to claim 1.
面の形状において、前記内部隔壁によって仕切られた空
間の数が２〜６であることを特徴とする請求項１又は２
記載の微生物固定化担体。3. The shape of the cross section perpendicular to the longitudinal centerline of the tubular body, wherein the number of spaces partitioned by the internal partition wall is 2 to 6.
The microorganism-immobilized carrier described.
徴とする請求項１〜３いずれかに記載の微生物固定化担
体。4. The microorganism-immobilized carrier according to claim 1, which has a specific gravity of 0.85 to 1.2.
mmであることを特徴とする請求項１〜４いずれかに記載
の微生物固定化担体。5. The maximum value of the outer diameter of the cylindrical body is 3 mm to 30.
mm, The microorganism-immobilized carrier according to any one of claims 1 to 4, wherein
隔壁の肉厚の比が４以上２０以下であることを特徴とす
る請求項１〜５いずれかに記載の微生物固定化担体。6. The microorganism immobilization according to claim 1, wherein the ratio of the maximum outer diameter of the tubular body to the wall thickness of the outer peripheral partition wall is 4 or more and 20 or less. Carrier.
厚の比が３以下であることを特徴とする請求項１〜６い
ずれかに記載の微生物固定化担体。7. The microorganism-immobilized carrier according to claim 1, wherein a ratio between the length of the cut and the wall thickness of the outer peripheral partition wall is 3 or less.
の最大値との比が０．０５以上であることを特徴とする
請求項１〜７いずれかに記載の微生物固定化担体。8. The microorganism-immobilized carrier according to claim 1, wherein a ratio between the length of the cut and the maximum value of the outer shape of the tubular body is 0.05 or more.
あることを特徴とする請求項１〜８いずれかに記載の微
生物固定化担体。9. The microorganism-immobilized carrier according to any one of claims 1 to 8, which is a fluidized bed-type microorganism-immobilized carrier for biological treatment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001200805A JP2003010875A (en) | 2001-07-02 | 2001-07-02 | Microorganism immobilized carrier |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2001200805A JP2003010875A (en) | 2001-07-02 | 2001-07-02 | Microorganism immobilized carrier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2003010875A true JP2003010875A (en) | 2003-01-14 |
Family
ID=19037865
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2001200805A Pending JP2003010875A (en) | 2001-07-02 | 2001-07-02 | Microorganism immobilized carrier |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2003010875A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104192991A (en) * | 2014-08-13 | 2014-12-10 | 东莞市东元新能源科技有限公司 | Novel bio-membrane contact packing |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS517958U (en) * | 1974-07-02 | 1976-01-21 | ||
| JPS6358693U (en) * | 1986-10-02 | 1988-04-19 | ||
| JPH09150179A (en) * | 1995-11-30 | 1997-06-10 | Morimura Kosan Kk | Production of packing material for waste water treatment of septic tank and the like |
| JPH09510142A (en) * | 1994-03-16 | 1997-10-14 | アノックス ホールディング アクティエボラーグ | Biofilm carrier for water and wastewater purification |
| JP2001017805A (en) * | 1999-07-05 | 2001-01-23 | Matsushita Electric Works Ltd | Filter medium |
-
2001
- 2001-07-02 JP JP2001200805A patent/JP2003010875A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS517958U (en) * | 1974-07-02 | 1976-01-21 | ||
| JPS6358693U (en) * | 1986-10-02 | 1988-04-19 | ||
| JPH09510142A (en) * | 1994-03-16 | 1997-10-14 | アノックス ホールディング アクティエボラーグ | Biofilm carrier for water and wastewater purification |
| JPH09150179A (en) * | 1995-11-30 | 1997-06-10 | Morimura Kosan Kk | Production of packing material for waste water treatment of septic tank and the like |
| JP2001017805A (en) * | 1999-07-05 | 2001-01-23 | Matsushita Electric Works Ltd | Filter medium |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104192991A (en) * | 2014-08-13 | 2014-12-10 | 东莞市东元新能源科技有限公司 | Novel bio-membrane contact packing |
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