JP2008073676A

JP2008073676A - Cartridge for filtration

Info

Publication number: JP2008073676A
Application number: JP2006286933A
Authority: JP
Inventors: Katsumi Seto; 克己瀬戸
Original assignee: MEMBRANE TEC CO Ltd; MEMBRANE-TEC CO Ltd
Current assignee: MEMBRANE TEC CO Ltd; MEMBRANE-TEC CO Ltd
Priority date: 2006-09-22
Filing date: 2006-09-22
Publication date: 2008-04-03

Abstract

<P>PROBLEM TO BE SOLVED: To provide a cartridge for filtration which enables efficient entrance of air between it and a cartridge adjacent to it. <P>SOLUTION: The cartridge for filtration is dipped in a water treatment tank so that it may be located upper an aeration pipe and used so as to conduct water filtration. In addition, the cartridge 1 for filtration comprises a plastic filtration plate 2 whose front and back surfaces are covered with membrane filters 3. The filtration plate 2 looks to be a vertically long rectangle when viewed from the front. A filtrated water-sucking nozzle 7 is formed at the upper end edge of the filtration plate 2 in a state in which the filtration plate 2 stands with its long side turning in the vertical direction. Filtrated water flow-in grooves 6 are formed in parallel at equal intervals on the front and back surfaces of the filtration plate 2 so that they may be connected to the filtrated water-sucking nozzle 7. A taper part 9 tapering outward is formed at least at the lower end edge of the filtration plate 2 among this lower end edge and the left and right side edges of the filtration plate 2 in a state in which the filtration plate 2 stands with its long side turning in the vertical direction. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、例えば活性汚泥水から汚泥成分を取り除き濾過を行なうために水処理槽内に浸漬されて使用される濾過用カートリッジに関するものである。 The present invention relates to a filtration cartridge that is used by being immersed in a water treatment tank in order to remove sludge components from activated sludge water and perform filtration, for example.

従来のこの種濾過用カートリッジとしては例えば特許文献１に開示されているように、濾板の表面を覆って濾過膜を設け、濾板の上側部に表裏に貫通して集水部を設け、一端が集水部に連通する吸引ノズルを濾板の周縁に設け、濾板の表面に開口する複数のスリットを一端で集水部に連通して濾板の上側部から下側部にわたって並列に設け、隣接するスリットの間隔を濾板の上下方向の長さの１／５〜１／２０としたものが知られている。 As a conventional cartridge for this type of filtration, for example, as disclosed in Patent Document 1, a filter membrane is provided so as to cover the surface of the filter plate, and a water collecting portion is provided through the front and back of the upper side of the filter plate, A suction nozzle whose one end communicates with the water collection section is provided at the periphery of the filter plate, and a plurality of slits that open to the surface of the filter plate communicate with the water collection section at one end and are arranged in parallel from the upper side to the lower side of the filter plate. It is known that the interval between adjacent slits is 1/5 to 1/20 of the length in the vertical direction of the filter plate.

具体的には、濾板の表面に開口する複数のスリットは上下方向に向いており、各スリットの上端が前記集水部に連通するように構成されている。また、このカートリッジの濾板の下端面は偏平に形成されている。
特開平８−２８１２６４号公報 Specifically, the plurality of slits opened on the surface of the filter plate are oriented in the vertical direction, and the upper ends of the slits are configured to communicate with the water collecting section. Further, the lower end surface of the filter plate of the cartridge is formed flat.
JP-A-8-281264

上記特許文献１に開示されているカートリッジの構成では、図面ではスリットが上下方向に向くように形成され、少なくともカートリッジの濾板の下端面は偏平に形成されていることから、スリットが上下方向に向くようにカートリッジを立てた状態で水処理層中に多数枚適当間隔おきでエアーを噴出させる散気管の上方にセットするものであるが、カートリッジの濾板の下端面は偏平であることからカートリッジの下方に配設された散気管から出たエアーが濾板の偏平な下端面に当たり、隣り合うカートリッジ間にエアーを有効に送り込むことができず、カートリッジの表面の濾過膜の汚れを落としにくく、エアーの流れが悪い部分では濾過膜の目が付着した汚泥によって閉塞してしまうという問題があった。 In the configuration of the cartridge disclosed in Patent Document 1, the slit is formed so as to face in the vertical direction in the drawing, and at least the lower end surface of the filter plate of the cartridge is formed flat. Therefore, the slit is formed in the vertical direction. The cartridge is set up above the air diffuser tube that ejects air at appropriate intervals in the water treatment layer with the cartridge standing upright, but since the lower end surface of the filter plate of the cartridge is flat, the cartridge The air exiting from the air diffuser disposed below the flat plate hits the flat lower end surface of the filter plate and cannot effectively send air between adjacent cartridges, making it difficult to remove the dirt on the filter membrane on the surface of the cartridge, There was a problem that the filter membrane was clogged with sludge adhering to the part where the air flow was poor.

本発明の目的は、このような課題を解決するものであり、隣り合うカートリッジ間にエアーの進入を効率良く行なえるようにした濾過用カートリッジを提供することにある。 An object of the present invention is to solve such a problem, and to provide a filtration cartridge capable of efficiently allowing air to enter between adjacent cartridges.

本発明の請求項１に記載の濾過用カートリッジは、水濾過を行なうために水処理槽内に散気管の上方に位置するように浸漬されて使用される濾過用カートリッジであって、この濾過用カートリッジは合成樹脂製の濾板の表裏両面を濾過膜で覆うことにより作られており、濾板は正面から見て縦長の長方形を呈しており、濾板を長辺側が上下方向に向くように立てた状態において濾板の上端縁に濾過水吸引ノズルが形成されており、またこの濾板の表裏両面には前記濾過水吸引ノズルに繋がるように等間隔おきに互いに平行となるように濾過水流入溝が形成されており、濾板を長辺側が上下方向に向くように立てた状態において濾板の下端縁および左右の両側縁の内、少なくとも下端縁には外向きに尖ったテーパー部が形成されていることを特徴とする。 The filtration cartridge according to claim 1 of the present invention is a filtration cartridge that is used by being immersed in a water treatment tank so as to be positioned above a diffuser tube in order to perform water filtration. The cartridge is made by covering both the front and back sides of a filter plate made of synthetic resin with a filter membrane. The filter plate has a vertically long rectangle when viewed from the front, with the filter plate facing the long side in the vertical direction. In an upright state, a filtered water suction nozzle is formed at the upper edge of the filter plate, and both the front and back surfaces of the filter plate are parallel to each other at equal intervals so as to be connected to the filtered water suction nozzle. An inflow groove is formed, and in a state where the filter plate is erected so that the long side faces in the vertical direction, at least the lower end edge of the lower end edge and the left and right side edges of the filter plate has an outwardly tapered portion. Specially formed To.

以上のように、本発明の濾過用カートリッジは、濾板の下端縁にテーパー部が形成された濾過用カートリッジを縦置きにして使用した場合、水処理槽内において濾過用カートリッジの下方に位置する散気管より噴出されたエアーがテーパー部をガイドとして隣り合う濾過用カートリッジ間の隙間に均等に進入しやすく、濾過膜の表面の汚れ除去効率を向上させることができる。 As described above, the filtration cartridge of the present invention is positioned below the filtration cartridge in the water treatment tank when the filtration cartridge having a tapered portion formed at the lower end edge of the filter plate is used in a vertical position. Air ejected from the air diffusing tube can easily enter the gap between adjacent filtration cartridges using the tapered portion as a guide, and the dirt removal efficiency on the surface of the filtration membrane can be improved.

以下、本発明の実施の形態を、図面に基づき具体的に説明する。
先ず図１〜図５に示す第１の実施の形態について説明すると、１は例えば活性汚泥水から汚泥成分を取り除き濾過を行なうために水処理槽内に浸漬されて使用される濾過用カートリッジであって、この濾過用カートリッジ１は合成樹脂製の濾板２の表裏両面を濾過膜３で覆うことにより作られている。濾板２は正面から見て縦長の長方形を呈しており、この濾板２の表裏両面には上端縁と平行で上端縁のやや下側に濾過水集合溝４が形成されているとともに一側縁（図２では左側縁）と平行で一端縁のやや内側にも前記濾過水集合溝４に対して直角に向く濾過水集合溝５が形成されている。６は前記濾過水集合溝４と濾過水集合溝５で囲まれる濾板２の表裏両面において一端が濾過水集合溝４，５の何れかに連通するように斜め４５度の角度で等間隔おきに互いに平行となるように形成された濾過水流入溝で、この濾過水流入溝６の他端は濾板２の他側縁（図２では右側縁）および下端縁の何れかに向いて濾過水集合溝４，５から外側に突出しないように形成されている。つまり、濾過水流入溝６の他端は前記濾過水集合溝４，５の何れにも連通しないように形成されていて、濾板２の他側縁および下端縁から離れている。Embodiments of the present invention will be specifically described below with reference to the drawings.
First, the first embodiment shown in FIGS. 1 to 5 will be described. Reference numeral 1 denotes a filtration cartridge that is used by being immersed in a water treatment tank in order to remove sludge components from activated sludge water and perform filtration. The filtration cartridge 1 is made by covering both front and back surfaces of a synthetic resin filter plate 2 with a filtration membrane 3. The filter plate 2 has a vertically long rectangular shape when viewed from the front, and both sides of the filter plate 2 are parallel to the upper edge and are formed with a filtrate collecting groove 4 slightly below the upper edge and on one side. A filtrate collecting groove 5 is formed parallel to the edge (left edge in FIG. 2) and slightly inside the one end edge to face the filtered water collecting groove 4 at a right angle. 6 is an equidistant interval at an angle of 45 degrees so that one end of the filter plate 2 surrounded by the filtrate collecting groove 4 and the filtrate collecting groove 5 is connected to one of the filtrate collecting grooves 4 and 5. The filtrate water inflow grooves formed so as to be parallel to each other, the other end of the filtrate water inflow groove 6 is filtered toward either the other side edge (right side edge in FIG. 2) or the lower end edge of the filter plate 2. It is formed so as not to protrude outward from the water collecting grooves 4 and 5. That is, the other end of the filtered water inflow groove 6 is formed so as not to communicate with any of the filtered water collecting grooves 4 and 5, and is separated from the other side edge and lower end edge of the filter plate 2.

７は濾板２を長辺側が上下方向に向くように立てた状態において上端縁に形成された濾過水吸引ノズルで、この濾過水吸引ノズル７の真下には前記濾過水集合溝４と濾過水集合溝５との連通部であるコーナーに繋がるように濾板２の表裏両面に貫通する集水部８が形成されている。具体的には、この濾過水吸引ノズル７は濾板２を長辺側が上下方向に向くように立てた状態において左端部近傍に形成され、前記濾過水流入溝６は濾過水吸引ノズル７の方向に斜め上向きに形成されている。なお、濾過水集合溝４および濾過水集合溝５は濾過水吸引ノズル７に近い側を下流側とすると、これらの溝幅は下流側程広くなるように形成されている。 Reference numeral 7 denotes a filtered water suction nozzle formed at the upper edge of the filter plate 2 in a state where the long side is oriented in the vertical direction. The filtered water collecting groove 4 and the filtered water are directly below the filtered water suction nozzle 7. A water collecting portion 8 that penetrates both the front and back surfaces of the filter plate 2 is formed so as to be connected to a corner that is a communication portion with the collecting groove 5. Specifically, the filtered water suction nozzle 7 is formed in the vicinity of the left end in a state where the filter plate 2 is erected so that the long side faces in the vertical direction, and the filtered water inflow groove 6 is formed in the direction of the filtered water suction nozzle 7. Are formed diagonally upward. The filtered water collecting groove 4 and the filtered water collecting groove 5 are formed so that the groove width becomes wider toward the downstream side when the side closer to the filtered water suction nozzle 7 is the downstream side.

ところで、前記濾板２を長辺側が上下方向に向くように立てた状態において濾板２の下端縁および左右の両側縁は外向きにＶ型に尖った両刃型のテーパー形状となるように形成されている。９はそのテーパー部である。 By the way, in the state where the filter plate 2 is erected so that the long side is directed in the vertical direction, the lower end edge and the left and right side edges of the filter plate 2 are formed to have a double-edged taper shape that is pointed outwardly in a V shape. Has been. 9 is the taper part.

また、１０は濾板２を長辺側が上下方向に向くように立てた状態において上端縁に形成された濾過用カートリッジ１の引っ掛け部で、濾過用カートリッジ１を水処理槽に対して引き上げたり挿入したりする際に治具を引っ掛け部１０に引っ掛けて作業を行なうためのものである。 Reference numeral 10 denotes a hooking portion of the filtration cartridge 1 formed at the upper edge when the filter plate 2 is erected so that the long side faces in the vertical direction. The filtration cartridge 1 is pulled up or inserted into the water treatment tank. For example, the jig is hooked on the hook portion 10 when performing the operation.

１１は互いに平行な前記濾過水流入溝６，６間における濾板２の表裏両面に形成された高さの低い凸条部で、前記濾過膜３が処理水の吸引力により濾板２の表裏両面に対し密着しないように構成されている。 Numeral 11 is a low ridge formed on the front and back surfaces of the filter plate 2 between the filtered water inflow grooves 6 and 6 parallel to each other, and the filter membrane 3 is turned upside down by the suction force of the treated water. It is comprised so that it may not contact | adhere with respect to both surfaces.

なお、前記濾過膜３は濾板２の表裏両面に対し濾板２の外周の縁部と前記濾過水集合溝４，５および濾過水流入溝６形成部との間で周囲が接合固着されている。 The perimeter of the filter membrane 3 is bonded and fixed to the front and back surfaces of the filter plate 2 between the peripheral edge of the filter plate 2 and the filtrate water collecting grooves 4 and 5 and the filtrate water inflow groove 6 forming portion. Yes.

上記構成の濾過用カートリッジ１は長辺側が上下方向に向くように立てた状態で水処理槽内に多数並列状態で等間隔おきに散気管の上方に浸漬される。水処理槽内の被処理水は前記濾過膜３より濾過水流入溝６内に流入され濾過水集合溝４，５を通って集水部８を経て濾過水吸引ノズル７より吸引されて水処理槽外に取り出される。このとき、濾過水流入溝４および５の幅は濾過水吸引ノズル７に近づくにつれて広くなっており、これら濾過水流入溝４および５に濾過水流入溝６から流れ込む水の流動抵抗が小さくなる。また、前記散気管より噴出されたエアーは隣り合う濾過用カートリッジ１間の隙間を通って上昇する。このとき、エアーは濾過用カートリッジ１の表面を形成する濾過膜３に接触して、濾過膜３の表面の汚れを掻き落とす働きをする。ところで、本実施の形態の濾過用カートリッジ１の濾板２の下端縁には外向きにＶ型に尖った両刃型のテーパー部９が形成されていることから、散気管より噴出されたエアーがテーパー部９をガイドとして隣り合う濾過用カートリッジ１間の隙間に進入しやすく、濾過膜３の表面の汚れ除去効率を向上させることができる。また、濾過用カートリッジ１の濾板２の下端縁の他、左右の両側縁にも外向きにＶ型に尖った両刃型のテーパー部９が形成されており、前記濾過水流入溝６が濾過水集合溝４，５の何れかに連通するように斜め４５度の角度で形成されていることから、濾過用カートリッジ１を横置きにしても使用可能で、しかも散気管より噴出されたエアーが隣り合う濾過用カートリッジ１間の隙間に進入しやすく、濾過膜３の表面の汚れ除去効率を向上させることができる。 The filtration cartridge 1 having the above-described configuration is immersed above the air diffuser at regular intervals in the water treatment tank in a state where the long side faces up in the vertical direction. The water to be treated in the water treatment tank flows into the filtrate inflow groove 6 from the filtration membrane 3, passes through the filtrate collection grooves 4 and 5, passes through the water collecting section 8, and is sucked from the filtrate water suction nozzle 7 to be treated with water. It is taken out of the tank. At this time, the width of the filtered water inflow grooves 4 and 5 becomes wider as the filtered water suction nozzle 7 is approached, and the flow resistance of water flowing into the filtered water inflow grooves 4 and 5 from the filtered water inflow groove 6 is reduced. Further, the air ejected from the air diffuser rises through a gap between adjacent filtration cartridges 1. At this time, the air contacts the filtration membrane 3 that forms the surface of the filtration cartridge 1 and acts to scrape off the dirt on the surface of the filtration membrane 3. By the way, since a double-edged taper portion 9 that is pointed outwardly in a V shape is formed on the lower end edge of the filter plate 2 of the filtration cartridge 1 of the present embodiment, the air blown from the air diffuser is The taper portion 9 can be used as a guide to easily enter a gap between adjacent filtration cartridges 1, and the dirt removal efficiency on the surface of the filtration membrane 3 can be improved. Further, in addition to the lower end edge of the filter plate 2 of the filtration cartridge 1, a double-edged taper portion 9 that is pointed outwardly in a V shape is also formed on both left and right side edges. Since it is formed at an angle of 45 degrees so as to communicate with either of the water collecting grooves 4 and 5, it can be used even when the filtration cartridge 1 is placed horizontally, and the air blown from the air diffuser is It is easy to enter the gap between the adjacent filtration cartridges 1, and the dirt removal efficiency on the surface of the filtration membrane 3 can be improved.

以上述べた第１の実施の形態では、濾板２を長辺側が上下方向に向くように立てた状熊において濾板２の下端縁および左右の両側縁は外向きにＶ型に尖った対称両刃型のテーパー形状となるように形成されているが、濾板２の下端縁および左右の両側縁を図６に示す第２の実施の形態のように外向きに尖った片刃型のテーパー形状となるように形成しても良く、あるいは図７に示す第３の実施の形態のように外向きにＶ型に尖った非対称両刃型のテーパー形状となるように形成しても良い。 In the first embodiment described above, the bottom edge of the filter plate 2 and the left and right side edges are symmetrical outwardly pointed in a V shape in the shape of a bear in which the filter plate 2 is erected so that the long side faces in the vertical direction. Although it is formed so as to have a double-edged taper shape, a single-edged taper shape in which the lower end edge and the left and right side edges of the filter plate 2 are pointed outwardly as in the second embodiment shown in FIG. Alternatively, as in the third embodiment shown in FIG. 7, it may be formed so as to have an asymmetric double-blade taper shape that is pointed outward in a V shape.

なお、前記濾過水流入溝６は濾板２を長辺側が上下方向に向くように立てた状態において上下方向に向くように互いに平行に等間隔おきに形成されていても良く、その場合濾過用カートリッジ１は縦置き状態で使用されることになり、前記テーパー部９は濾板２を長辺側が上下方向に向くように立てた状態において濾板２の下端縁にのみ形成されていれば良い。 The filtered water inflow grooves 6 may be formed at equal intervals parallel to each other so as to face the vertical direction in a state where the filter plate 2 stands so that the long side faces the vertical direction. The cartridge 1 is used in a vertically placed state, and the tapered portion 9 only needs to be formed only at the lower end edge of the filter plate 2 in a state where the filter plate 2 is erected so that the long side faces in the vertical direction. .

本発明の第１の実施の形態における濾過用カートリッジの分解斜視図である。It is a disassembled perspective view of the cartridge for filtration in the 1st embodiment of the present invention. 同濾過用カートリッジに使用される濾板の拡大正面図である。It is an enlarged front view of the filter plate used for the cartridge for filtration. 図２のＸ−Ｘ断面図である。It is XX sectional drawing of FIG. 図２のＹ−Ｙ断面図である。It is YY sectional drawing of FIG. 同濾過用カートリッジの完成斜視図である。It is a completion perspective view of the cartridge for filtration. 本発明の第２の実施の形態における濾過用カートリッジに使用される濾板の要部拡大断面図である。It is a principal part expanded sectional view of the filter plate used for the cartridge for filtration in the 2nd Embodiment of this invention. 本発明の第３の実施の形態における濾過用カートリッジに使用される濾板の要部拡大断面図である。It is a principal part expanded sectional view of the filter plate used for the cartridge for filtration in the 3rd Embodiment of this invention.

Explanation of symbols

１濾過用カートリッジ
２濾板
３濾過膜
４，５濾過水集合溝
６濾過水流入溝
７濾過水吸引ノズル
８集水部
９テーパー部DESCRIPTION OF SYMBOLS 1 Filtration cartridge 2 Filter plate 3 Filtration membrane 4,5 Filtration water collection groove 6 Filtration water inflow groove 7 Filtration water suction nozzle 8 Water collecting part 9 Taper part

Claims

A filtration cartridge that is used by being immersed in a water treatment tank so as to be positioned above a diffuser tube in order to perform water filtration, and this filtration cartridge is a filter membrane on both sides of a synthetic resin filter plate. The filter plate has a vertically long rectangular shape when viewed from the front, and the filtered water suction nozzle is placed on the upper edge of the filter plate in a state where the long side is directed vertically. In addition, on both the front and back surfaces of the filter plate, filtrate water inflow grooves are formed so as to be parallel to each other at equal intervals so as to be connected to the filtrate water suction nozzle. A filtration cartridge, wherein a taper portion that is pointed outward is formed on at least the lower end edge of the lower end edge and the left and right side edges of the filter plate in a state of being vertically oriented.