JP2002052318A - Tubular membrane element and submerged filter system using the same - Google Patents
Tubular membrane element and submerged filter system using the sameInfo
- Publication number
- JP2002052318A JP2002052318A JP2000243472A JP2000243472A JP2002052318A JP 2002052318 A JP2002052318 A JP 2002052318A JP 2000243472 A JP2000243472 A JP 2000243472A JP 2000243472 A JP2000243472 A JP 2000243472A JP 2002052318 A JP2002052318 A JP 2002052318A
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- Japan
- Prior art keywords
- tubular
- tubular membrane
- membrane element
- membrane
- filtrate
- 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.)
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- Separation Using Semi-Permeable Membranes (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は管状膜エレメントと
これを用いた浸漬型濾過システムに関するものである。The present invention relates to a tubular membrane element and a immersion filtration system using the same.
【０００２】[0002]
【従来の技術】近年、産業排水、中下水道水、生活排水
などの濾過または濃縮のための分離装置には、原液槽内
に複数の膜エレメントを浸漬し、濾液側を負圧にして原
液を濾過する浸漬型濾過システムが多用されている。2. Description of the Related Art In recent years, in a separation apparatus for filtering or concentrating industrial wastewater, middle sewage water, domestic wastewater, etc., a plurality of membrane elements are immersed in a stock solution tank, and the filtrate side is made negative pressure to remove the stock solution. An immersion type filtration system for filtering is often used.
【０００３】このような浸漬型濾過システムは、濾過の
進行に伴って膜エレメントの濾過膜で捕捉された物質が
表面に付着してケーキ層を形成し、これによって濾過抵
抗が増大し、濾過量が低下するため、濾過中に、または
定期的に濾過を中断させて膜エレメントの下方より空気
を送入して気泡を発生させ、気泡による濾過膜の振動や
気泡とケーキ層との接触によってケーキ層の付着を抑制
したり、付着したケーキ層の剥離を促進して、膜エレメ
ントが長期間使用できるようにしている。In such an immersion type filtration system, as the filtration proceeds, the substance captured by the filtration membrane of the membrane element adheres to the surface to form a cake layer, thereby increasing the filtration resistance and increasing the filtration amount. During filtration or during the filtration, the filtration is interrupted and air is fed from below the membrane element to generate air bubbles, and cake is formed by vibration of the filtration membrane due to air bubbles and contact between the air bubbles and the cake layer. The membrane element can be used for a long period of time by suppressing the adhesion of the layer or promoting the peeling of the attached cake layer.
【０００４】上記した浸漬型濾過システムに用いられ、
比較的大容量の濾過に適したものとしては、外径が２．
５ｍｍ以下で、内径が１．５ｍｍ以下の中空糸膜からな
るものや袋状にした平膜からなるものがあり、前者のも
のは中空糸膜を多数集合させて両端を固定した中空糸膜
エレメントとして用いられ、これを原液中に浸漬し、中
空部を減圧して中空糸膜の外から内に流すことによって
濾過が行われるように構成され、後者のものは袋状にし
た複数の平膜の内側同士と外側同士とがそれぞれ共通に
なるようにした平膜エレメントとして用いられ、これを
原液中に浸漬し、内側を減圧して平膜の外から内に流す
ことによって濾過が行われるように構成される。そし
て、前記浸漬型濾過システムは、いずれの膜エレメント
を使用したものも、その下方に配置した散気装置から気
泡を発生させ、この気泡によって膜面に付着したケーキ
層を剥離する、エアレーションを行うようにしている。[0004] Used in the immersion filtration system described above,
Suitable for relatively large volume filtration are those with an outer diameter of 2.
There are a hollow fiber membrane having an inner diameter of 5 mm or less and an inner diameter of 1.5 mm or less and a flat membrane in a bag shape. The former is a hollow fiber membrane element in which a large number of hollow fiber membranes are assembled and both ends are fixed. It is used as a filter, so that it is immersed in a stock solution, the hollow part is decompressed and the filtration is carried out by flowing the hollow fiber membrane from the outside to the inside, and the latter is a plurality of bag-shaped flat membranes It is used as a flat membrane element so that the inside and the outside of the flat membrane are common to each other, so that this is immersed in a stock solution, the inside is decompressed, and the filtration is performed by flowing from the outside to the inside of the flat membrane. Is composed of The immersion-type filtration system performs aeration by generating air bubbles from an air diffuser disposed under any of the membrane elements using any of the membrane elements and peeling a cake layer adhered to the membrane surface by the air bubbles. Like that.
【０００５】上記した浸漬型濾過システムにおいて、中
空糸膜または平膜の外から内に原液を流すことによって
濾過を行うのは、中空糸膜では原液中の被濾過物質や活
性汚泥処理時の汚泥の大きさと中空糸膜の内径とがほぼ
同じであること、散気装置から発生させる気泡が中空部
を通過しにくいこと、平膜では散気装置から発生させる
気泡による原液の上昇流を生じさせやすいことによる。In the above-mentioned immersion type filtration system, filtration is performed by flowing a stock solution from the outside to the inside of the hollow fiber membrane or the flat membrane. In the hollow fiber membrane, a substance to be filtered in the stock solution or sludge during activated sludge treatment is used. The size of the hollow fiber membrane and the inner diameter of the hollow fiber membrane are almost the same, the bubbles generated from the air diffuser are difficult to pass through the hollow part, and the flat membrane causes the ascending flow of the stock solution due to the bubbles generated from the air diffuser. It depends.
【０００６】また、中空糸膜エレメントと平膜エレメン
トとでは、一定の容積に対する膜の表面積を比較する
と、中空糸膜エレメントの方が平膜エレメントより大き
く、容積効率を高くすることができるが、構造的には、
中空糸膜エレメントの場合は中空糸膜の両端が固定され
ているため、気泡による中空糸膜の揺動で糸切れが生じ
ることがあるのに対し、平膜エレメントの場合は下端が
フリーであるため、平膜の揺動による膜の破断は生じに
くいといった一長一短がある。Further, when comparing the surface area of the membrane with respect to a certain volume between the hollow fiber membrane element and the flat membrane element, the hollow fiber membrane element is larger than the flat membrane element, and the volume efficiency can be increased. Structurally,
In the case of the hollow fiber membrane element, since both ends of the hollow fiber membrane are fixed, the breakage of the hollow fiber membrane due to bubbles may occur, whereas in the case of the flat membrane element, the lower end is free. Therefore, there is an advantage and a disadvantage that the film is hardly broken due to the swing of the flat film.
【０００７】さらに、上記した浸漬型濾過システムで
は、中空糸膜エレメントを用いたものであっても平膜エ
レメントを用いたものであっても、エアレーションは原
液が貯留された開放槽で行われるため、空気の量が多く
なってランニングコストが増大するといった問題もあ
る。Further, in the above immersion type filtration system, aeration is performed in an open tank in which a stock solution is stored, regardless of whether a hollow fiber membrane element or a flat membrane element is used. Also, there is a problem that the amount of air increases and the running cost increases.
【０００８】上述した、中空糸膜エレメントと平膜エレ
メントの双方がもつ長所を生かしたものとして、特開平
７−７７２号公報に記載されたようなものがある。前記
公報には、一定の容積に対する膜の表面積が大きくでき
る中空糸膜の長所を取り入れるとともに、中空部の閉塞
や糸切れといった中空糸膜の短所を排除することが開示
されている。すなわち、膜モジュール４の径を１０ｍｍ
以上とし、かつこの膜モジュール４の一端を懸垂状態で
ケーシング３内に配置し、散気装置９による空気のエア
リフト作用によって循環流を生じさせ、これによってケ
ーキ層の除去とその成長を抑制するものである。[0008] Japanese Unexamined Patent Publication No. 7-772 discloses a technique utilizing the advantages of both the hollow fiber membrane element and the flat membrane element. The publication discloses that the advantages of a hollow fiber membrane capable of increasing the surface area of the membrane with respect to a certain volume are adopted, and that the disadvantages of the hollow fiber membrane such as blockage of a hollow portion and breakage of a yarn are eliminated. That is, the diameter of the membrane module 4 is 10 mm.
As described above, one end of the membrane module 4 is arranged in a suspended state in the casing 3, and a circulating flow is generated by the air lift action of the air by the air diffuser 9, thereby suppressing the removal of the cake layer and its growth. It is.
【０００９】[0009]
【発明が解決しようとする課題】前述した特開平７−７
７２号公報に記載されたものは、中空部の閉塞や糸切れ
といった問題を解消でき、循環流によるケーキ層の除去
とその成長を抑制できるが、散気装置による上向流の発
生は開放槽で行われるため、空気の量の増加によるラン
ニングコストが増大することを解消することはできない
という問題や膜モジュールの間に循環流を通過させるた
めの間隙を設ける必要があるため、容積効率の増加は期
待できないという問題が依然としてあった。SUMMARY OF THE INVENTION The above-mentioned JP-A-7-7
No. 72 can solve the problems such as blockage of the hollow portion and breakage of the yarn, and can remove the cake layer by the circulating flow and suppress the growth thereof. In this case, the running cost cannot be increased due to an increase in the amount of air, and it is necessary to provide a gap between the membrane modules for passing the circulating flow, thereby increasing the volumetric efficiency. There was still a problem that we could not expect.
【００１０】[0010]
【課題を解決するための手段】上記課題を解決するた
め、請求項１記載の発明は、一部に濾液集水管を設けた
筒状の外装ケースに、複数の管状膜を集合させた集合体
を挿通させ、前記外装ケースの両端の開口部を管状膜の
端部とともに樹脂にてポッティングしたことを特徴とす
る管状膜エレメントであり、これにより、原液を管状膜
の内部を通過させ、濾液を隣接する管状膜の間隙から得
るようにすることができる。Means for Solving the Problems To solve the above problems, the invention according to claim 1 is an assembly in which a plurality of tubular membranes are assembled in a cylindrical outer case partially provided with a filtrate collecting pipe. Is a tubular membrane element characterized in that the openings at both ends of the outer case were potted with resin together with the end of the tubular membrane, whereby the undiluted solution was passed through the inside of the tubular membrane, and the filtrate was filtered. It can be obtained from the gap between adjacent tubular membranes.
【００１１】また、請求項２記載の発明は、請求項１記
載の管状膜エレメントにおいて、樹脂にてポッティング
した外装ケースの両端の一部を切除することによって管
状膜の端部を開口させたことを特徴とするものであり、
これにより、原液を管状膜の内部を通過させ、濾液を隣
接する管状膜の間隙から得るようにした管状膜エレメン
トを効果的に得ることができる。According to a second aspect of the present invention, in the tubular membrane element according to the first aspect, an end of the tubular membrane is opened by cutting off a part of both ends of the outer case potted with resin. It is characterized by,
This makes it possible to effectively obtain a tubular membrane element in which the stock solution is passed through the inside of the tubular membrane, and the filtrate is obtained from the gap between the adjacent tubular membranes.
【００１２】また、請求項３記載の発明は、一部に濾液
集水管を設けた筒状の外装ケースに、複数の管状膜を集
合させた集合体を挿通させ、前記外装ケースの両端の開
口部を管状膜の端部とともに樹脂にてポッティングした
管状膜エレメントと、エアレーションによる気泡を放出
する散気装置とを有し、この散気装置と前記管状膜エレ
メントとを、下方に散気装置が位置するように原液中に
浸漬し、原液および気泡が管状膜の内部を通過するよう
にし、かつ前記濾液集水管側を負圧にするか水頭圧差に
より、濾液集水管から濾液を得ることを特徴とする浸漬
型濾過システムであり、これにより、管状膜エレメント
の外側に濾液の流路が形成されるため、隣接する管状膜
エレメントの間にエアレーションのための間隙を設ける
必要はなく、その容積効率が向上できるとともに、エア
レーションによる空気の流れを効果的に管状膜エレメン
トの内側に導くことができるため、そのランニングコス
トの抑制に寄与することができる。According to a third aspect of the present invention, an assembly in which a plurality of tubular membranes are assembled is inserted into a cylindrical outer case partially provided with a filtrate collecting pipe, and openings at both ends of the outer case are provided. A portion having a tubular membrane element potted with resin together with the end of the tubular membrane, and an air diffuser for releasing bubbles by aeration, the air diffuser and the tubular membrane element, The filtrate is immersed in the undiluted solution so that the undiluted solution and air bubbles pass through the inside of the tubular membrane, and the filtrate is collected from the filtrate collecting tube by applying a negative pressure to the filtrate collecting tube side or a head pressure difference. Since a flow path for filtrate is formed outside the tubular membrane element, there is no need to provide a gap for aeration between adjacent tubular membrane elements. It is possible to improve product efficiency, it is possible to direct the flow of air by aeration inside the effective tubular membrane elements can contribute to the suppression of the running cost.
【００１３】[0013]
【発明の実施の形態】以下、本発明をその実施の形態に
基づいて説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described based on its embodiments.
【００１４】図１は本発明の実施の形態に係る管状膜エ
レメントの縦断面図、図２は図１のＡ−Ａ’部の横断面
図、図３は図２の要部拡大図である。FIG. 1 is a longitudinal sectional view of a tubular membrane element according to an embodiment of the present invention, FIG. 2 is a transverse sectional view taken along the line AA 'of FIG. 1, and FIG. 3 is an enlarged view of a main part of FIG. .
【００１５】本発明の実施の形態に係る管状膜エレメン
トの特徴は、図示したように、一部に濾液集水管４を設
けた筒状の外装ケース１に、複数の管状膜２を集合させ
た集合体を挿通させ、前記外装ケース１の両端の開口部
を管状膜２の端部とともに樹脂３にてポッティングした
ことである。A feature of the tubular membrane element according to the embodiment of the present invention is that, as shown, a plurality of tubular membranes 2 are assembled in a cylindrical outer case 1 provided with a filtrate collecting pipe 4 in a part thereof. The assembly is inserted, and the openings at both ends of the outer case 1 are potted with the resin 3 together with the ends of the tubular membrane 2.
【００１６】前記外装ケース１はポリプロピレンなどの
合成樹脂製のもので、外径が１０６ｍｍ、内径が１００
ｍｍ、長さが１１００ｍｍの円筒状のものであり、前記
管状膜２はポリオレフィン系のもので、孔径が０．２５
μｍの、外径が５．４ｍｍ、内径が５．０ｍｍ、長さが
１１００ｍｍのチューブ状のものであり、この管状膜２
を２４０本集合させた集合体を前記外装ケース１に挿通
させ、この外装ケース１の両端の開口部を管状膜２の端
部とともにポリウレタンからなる樹脂３でポッティング
し、管状膜２の内側と外側とを隔離している。The outer case 1 is made of a synthetic resin such as polypropylene and has an outer diameter of 106 mm and an inner diameter of 100 mm.
mm and a length of 1100 mm, and the tubular membrane 2 is made of a polyolefin and has a pore diameter of 0.25 mm.
μm, a tubular shape having an outer diameter of 5.4 mm, an inner diameter of 5.0 mm, and a length of 1100 mm.
Are assembled through the outer case 1, and the openings at both ends of the outer case 1 are potted with the resin 3 made of polyurethane together with the ends of the tubular film 2, and the inside and outside of the tubular film 2 are And are isolated.
【００１７】こうして得られた管状膜エレメントの有効
膜面積は３．８ｍ2 であり、容積効率の点では、これと
同程度の有効膜面積をもった中空糸膜エレメントには及
ばないものの、平膜エレメントと比較すると、大幅に向
上できることがわかった。The effective membrane area of the tubular membrane element obtained in this way is 3.8 m 2 , and although the volume efficiency is lower than that of a hollow fiber membrane element having the same effective membrane area, It was found that compared to the membrane element, it could be greatly improved.
【００１８】前述した、外装ケース１の両端の開口部を
管状膜２の端部とともに樹脂３でポッティングするの
は、外装ケース１の両端の開口部を管状膜２の端部とと
もにポッティングした後、外装ケースの両端の一部を切
除することによって管状膜の端部を開口させるようにす
るのがよい。The above-mentioned potting of both ends of the outer case 1 with the resin 3 together with the ends of the tubular membrane 2 is performed after the openings at both ends of the outer case 1 are potted together with the ends of the tubular membrane 2. It is preferable that the ends of the tubular membrane are opened by cutting off a part of both ends of the outer case.
【００１９】次に、上記した管状膜エレメントを用いた
浸漬型濾過システムについて説明する。Next, an immersion filtration system using the above tubular membrane element will be described.
【００２０】前記浸漬型濾過システムの特徴は、上記し
た管状膜エレメントの下方に、エアレーションによる気
泡を放出する散気装置が位置するように原液中に浸漬
し、原液および気泡が管状膜２の内部を通過するように
し、濾液集水管４側を負圧にするか水頭圧差によって濾
液集水管４から濾液を得るようにしたことである。The immersion type filtration system is characterized in that it is immersed in a stock solution such that a diffuser for releasing bubbles by aeration is located below the tubular membrane element. , And the filtrate is obtained from the filtrate collecting pipe 4 by a negative pressure on the filtrate collecting pipe 4 side or a head pressure difference.
【００２１】従って、この浸漬型濾過システムでは、気
泡が管状膜２の内部を通過することにより原液の上昇流
が管状膜２の内部に生じ、これによって管状膜２の内面
にケーキ層が過大に集積することが防止できる。Therefore, in this immersion type filtration system, as the bubbles pass through the inside of the tubular membrane 2, an upward flow of the undiluted solution is generated inside the tubular membrane 2, whereby the cake layer on the inner surface of the tubular membrane 2 becomes excessively large. Accumulation can be prevented.
【００２２】[0022]
【実施例】前述した管状膜エレメントを、活性汚泥（Ｍ
ＬＳＳ）が約１２０００〜１５０００ｍｇ／リットルの
原液中に浸漬し、散気装置からの散気量を、中空糸膜エ
レメントや平膜エレメントを用いた場合の散気量の半分
程度の３〜６リットル／分・ｍ2 とし、濾過線速を０．
８ｍ／日で濾過を開始し、開始時の濾過差圧と１年経過
時の濾過差圧を比較したところ、開始時のそれは２ｋＰ
ａであったのが、１年経過時のそれは２０ｋＰａであ
り、前述した中空糸膜エレメントや平膜エレメントを用
いた浸漬型濾過システムと同程度であった。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The above-mentioned tubular membrane element is used for activated sludge (M
LSS) is immersed in a stock solution of about 12000 to 15000 mg / liter, and the amount of air diffused from the air diffuser is reduced to 3 to 6 liters, which is about half the amount of air diffused when a hollow fiber membrane element or a flat membrane element is used. / Min · m 2 , and the filtration linear velocity is set to 0.
Filtration was started at 8 m / day, and when the filtration differential pressure at the start and the filtration differential pressure after one year were compared, it was 2 kP at the start.
The value of a was 20 kPa after one year, which was almost the same as that of the immersion filtration system using the hollow fiber membrane element or the flat membrane element described above.
【００２３】このことから、本発明の浸漬型濾過システ
ムでは、散気装置からの散気量を減少させることができ
る分だけ、そのランニングコストを低減することがで
き、システムの効率的な運転に寄与できることがわか
る。Therefore, in the immersion type filtration system of the present invention, the running cost can be reduced by the amount of the air diffused from the air diffuser, and the system can be operated efficiently. It can be seen that it can contribute.
【００２４】次に、１年間使用した管状膜エレメント
を、有効塩素量が５０００ｐｐｍの次亜塩素酸ソーダ水
溶液中に浸漬し、最大圧力を２００ｋＰａとして逆洗し
た後、再度同じ条件下で濾過を行ったところ、開始時の
濾過差圧が２ｋＰａであることがわかった。Next, the tubular membrane element used for one year is immersed in an aqueous solution of sodium hypochlorite having an effective chlorine amount of 5000 ppm, backwashed at a maximum pressure of 200 kPa, and filtered again under the same conditions. As a result, it was found that the filtration pressure difference at the start was 2 kPa.
【００２５】このことから、本発明の浸漬型濾過システ
ムでは、エアレーションによる気泡が管状膜２の内部を
通過するようにし、管状膜２の内面にケーキ層が過大に
集積するのを防止しているから、逆洗によって新品と同
程度まで性能を回復できることがわかった。From the above, in the immersion filtration system of the present invention, bubbles caused by aeration are allowed to pass through the inside of the tubular membrane 2 to prevent the cake layer from excessively accumulating on the inner surface of the tubular membrane 2. From the results, it was found that the performance can be restored to the same level as a new one by backwashing.
【００２６】上記した浸漬型濾過システムに用いた、管
状膜エレメントの管状膜の内径は５ｍｍのものであった
が、原液のＭＬＳＳに応じて５〜９ｍｍのものを使用す
ることができる。The inner diameter of the tubular membrane of the tubular membrane element used in the above-mentioned immersion type filtration system was 5 mm, but an inner diameter of 5 to 9 mm can be used depending on the MLSS of the stock solution.
【００２７】[0027]
【発明の効果】上記した如く、請求項１，２記載の発明
によれば、原液を管状膜の内部を通過させ、濾液を隣接
する管状膜の間隙から得るようにできる管状膜エレメン
トを、効果的に得ることができ、その容積効率やランニ
ングコストを改善することができるとともに、中空糸膜
エレメントのような中空部から濾液を得るものではない
から、糸切れや中空部の閉塞といった信頼性が低下する
原因を排除することができる。As described above, according to the first and second aspects of the present invention, a tubular membrane element capable of allowing a stock solution to pass through the inside of a tubular membrane and obtaining a filtrate from a gap between adjacent tubular membranes has an effect. And the volumetric efficiency and running cost can be improved, and since the filtrate is not obtained from a hollow part such as a hollow fiber membrane element, reliability such as thread breakage and clogging of the hollow part can be obtained. The cause of the decrease can be eliminated.
【００２８】また、請求項３記載の発明によれば、浸漬
型濾過システムを長期間安定して使用するのに寄与する
ことができる。According to the third aspect of the present invention, the immersion type filtration system can be used stably for a long period of time.
【図１】本発明の実施の形態に係る管状膜エレメントの
縦断面図である。FIG. 1 is a longitudinal sectional view of a tubular membrane element according to an embodiment of the present invention.
【図２】図１のＡ−Ａ’部の横断面図である。FIG. 2 is a cross-sectional view taken along the line A-A 'of FIG.
【図３】図２の要部拡大図である。FIG. 3 is an enlarged view of a main part of FIG. 2;
１ 外装ケース ２ 管状膜 ３ 樹脂 ４ 濾液集水管 DESCRIPTION OF SYMBOLS 1 Outer case 2 Tubular membrane 3 Resin 4 Filtrate collecting pipe
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 4D006 GA02 GA07 HA27 HA93 JA13C JA18A JA25C JA31A JB06 JB08 KA13 KA43 KA63 KC03 KC16 KD24 KE01Q KE05Q KE06P KE11P KE12P KE28P MA02 MA22 MA33 MC22X PA01 PA02 PB08 PC62 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 4D006 GA02 GA07 HA27 HA93 JA13C JA18A JA25C JA31A JB06 JB08 KA13 KA43 KA63 KC03 KC16 KD24 KE01Q KE05Q KE06P KE11P KE12P KE28P MA02 MA22 MA33 MC22X PA01 PA02 PA02
Claims (3)
ースに、複数の管状膜を集合させた集合体を挿通させ、
前記外装ケースの両端の開口部を管状膜の端部とともに
樹脂にてポッティングしたことを特徴とする管状膜エレ
メント。Claims: 1. An assembly in which a plurality of tubular membranes are assembled is inserted into a cylindrical outer case partially provided with a filtrate collecting pipe,
A tubular membrane element wherein openings at both ends of the outer case are potted with resin together with ends of the tubular membrane.
て、樹脂にてポッティングした外装ケースの両端の一部
を切除することによって管状膜の端部を開口させたこと
を特徴とする管状膜エレメント。2. The tubular membrane element according to claim 1, wherein ends of the tubular membrane are opened by cutting off a part of both ends of the outer case potted with resin.
ースに、複数の管状膜を集合させた集合体を挿通させ、
前記外装ケースの両端の開口部を管状膜の端部とともに
樹脂にてポッティングした管状膜エレメントと、エアレ
ーションによる気泡を放出する散気装置とを有し、この
散気装置と前記管状膜エレメントとを、下方に散気装置
が位置するように原液中に浸漬し、原液および気泡が管
状膜の内部を通過するようにし、かつ前記濾液集水管側
を負圧にするか水頭圧差により、濾液集水管から濾液を
得ることを特徴とする浸漬型濾過システム。3. An assembly formed by assembling a plurality of tubular membranes is inserted into a cylindrical outer case partially provided with a filtrate collecting pipe,
It has a tubular membrane element in which openings at both ends of the outer case are potted with resin together with the end of the tubular membrane, and an air diffuser for releasing bubbles by aeration, and the air diffuser and the tubular membrane element Immersed in the undiluted solution so that the air diffuser is located below, so that the undiluted solution and bubbles pass through the inside of the tubular membrane, and set the filtrate collecting tube side to a negative pressure or a head pressure difference to thereby collect the filtrate collecting tube. An immersion-type filtration system characterized by obtaining a filtrate from a filter.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000243472A JP2002052318A (en) | 2000-08-10 | 2000-08-10 | Tubular membrane element and submerged filter system using the same |
| EP01955641A EP1338328A4 (en) | 2000-08-10 | 2001-08-09 | Immersion type membrane filter |
| US10/343,989 US7022238B2 (en) | 2000-08-10 | 2001-08-09 | Immersion type membrane filter |
| KR10-2003-7001652A KR100515806B1 (en) | 2000-08-10 | 2001-08-09 | Immersion type membrane filter |
| PCT/JP2001/006882 WO2002013954A1 (en) | 2000-08-10 | 2001-08-09 | Immersion type membrane filter |
| CN018076394A CN1501833B (en) | 2000-08-10 | 2001-08-09 | Immersion type membrane filter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000243472A JP2002052318A (en) | 2000-08-10 | 2000-08-10 | Tubular membrane element and submerged filter system using the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JP2002052318A true JP2002052318A (en) | 2002-02-19 |
Family
ID=18734318
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000243472A Pending JP2002052318A (en) | 2000-08-10 | 2000-08-10 | Tubular membrane element and submerged filter system using the same |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2002052318A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111732271A (en) * | 2020-06-17 | 2020-10-02 | 江苏南大环保科技有限公司 | Decentralized and alternating type sewage treatment device and method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62181772A (en) * | 1986-02-05 | 1987-08-10 | Kurita Water Ind Ltd | Bioreactor |
| JPH0670825U (en) * | 1993-03-17 | 1994-10-04 | 石垣機工株式会社 | Undiluted liquid filtration device with internal pressure type filtration membrane |
| JPH1099655A (en) * | 1996-10-02 | 1998-04-21 | Mitsubishi Rayon Co Ltd | Cutting apparatus and cutting method for resin-fixed part of hollow-yarn membrane |
| JPH11156165A (en) * | 1997-09-26 | 1999-06-15 | Nikkiso Co Ltd | Separation apparatus and separation membrane module |
| JP2000042382A (en) * | 1998-08-04 | 2000-02-15 | Nikkiso Co Ltd | Separation membrane and filter |
-
2000
- 2000-08-10 JP JP2000243472A patent/JP2002052318A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62181772A (en) * | 1986-02-05 | 1987-08-10 | Kurita Water Ind Ltd | Bioreactor |
| JPH0670825U (en) * | 1993-03-17 | 1994-10-04 | 石垣機工株式会社 | Undiluted liquid filtration device with internal pressure type filtration membrane |
| JPH1099655A (en) * | 1996-10-02 | 1998-04-21 | Mitsubishi Rayon Co Ltd | Cutting apparatus and cutting method for resin-fixed part of hollow-yarn membrane |
| JPH11156165A (en) * | 1997-09-26 | 1999-06-15 | Nikkiso Co Ltd | Separation apparatus and separation membrane module |
| JP2000042382A (en) * | 1998-08-04 | 2000-02-15 | Nikkiso Co Ltd | Separation membrane and filter |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111732271A (en) * | 2020-06-17 | 2020-10-02 | 江苏南大环保科技有限公司 | Decentralized and alternating type sewage treatment device and method |
| CN111732271B (en) * | 2020-06-17 | 2022-07-12 | 江苏南大环保科技有限公司 | Decentralized and alternating type sewage treatment device and method |
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