JPH0780488A - Water-treating tank - Google Patents
Water-treating tankInfo
- Publication number
- JPH0780488A JPH0780488A JP23070993A JP23070993A JPH0780488A JP H0780488 A JPH0780488 A JP H0780488A JP 23070993 A JP23070993 A JP 23070993A JP 23070993 A JP23070993 A JP 23070993A JP H0780488 A JPH0780488 A JP H0780488A
- Authority
- JP
- Japan
- Prior art keywords
- water
- air
- treated
- membrane
- treatment tank
- 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
- Biological Treatment Of Waste Water (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、濾過膜を内装するとと
もに、エア供給により曝気可能な散気管を内装してある
水処理槽に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a water treatment tank having a filter membrane and a diffusing pipe capable of aeration by air supply.
【０００２】[0002]
【従来の技術】従来、このような水処理槽としては、平
膜からなる濾過膜を間隔を隔てて平行に配置して、垂直
に並設して内装してあるものが考えられていた。また、
このような水処理槽は、散気管から気泡を供給すること
によって、槽内に 酸素を供給し、好気性菌を育成させ
ていた。2. Description of the Related Art Heretofore, as such a water treatment tank, there has been considered one in which filter membranes made of flat membranes are arranged in parallel with a space therebetween and arranged vertically side by side. Also,
In such a water treatment tank, oxygen is supplied into the tank by supplying air bubbles from an air diffuser to grow aerobic bacteria.
【０００３】[0003]
【発明が解決しようとする課題】しかし、上述した従来
のような水処理槽によれば、前記気泡は、散気管から直
上に上昇するだけであったために、前記散気管の浸漬深
さの経路でしか被処理水に接触せず、気泡中に含まれる
酸素は、被処理水中に溶け込みにくい。そのため前記好
気性菌が前記被処理水を生物分解する活性を、充分発揮
させることが出来ないものであった。However, according to the above-mentioned conventional water treatment tank, since the air bubbles only rise above the air diffuser pipe, the path of the immersion depth of the air diffuser pipe. Only in contact with the water to be treated, the oxygen contained in the bubbles hardly dissolves in the water to be treated. Therefore, the aerobic bacterium cannot fully exhibit the activity of biodegrading the water to be treated.
【０００４】本発明の目的は、上記実情に鑑み、散気管
から供給したエアから、被処理水に酸素が溶け込みやす
い水処理槽を提供することにある。In view of the above situation, it is an object of the present invention to provide a water treatment tank in which oxygen easily dissolves in the water to be treated from the air supplied from the air diffuser.
【０００５】[0005]
【課題を解決するための手段】この目的を達成するため
の本発明の特徴構成は、散気管の上方に前記濾過膜を配
置するとともに、前記濾過膜を平膜から構成し、前記散
気管からのエア供給により生じた気泡を前記散気管の浸
漬深さよりも長い経路を通って上方へ導く案内面を、前
記濾過膜の膜表面で形成してあることにあり、複数の前
記ろ過膜を、それぞれ傾斜させて並設してあってもよ
く、前記経路が、螺旋状になるように複数の前記濾過膜
を上下方向に並設してあってもよく、さらに、内壁面を
円筒状に形成してあれば尚良く、前記経路が、ジグザグ
状になるように複数の前記濾過膜を上下方向に並設して
あってもよく、それらの作用効果は以下の通りである。The characteristic configuration of the present invention for achieving this object is to arrange the filter membrane above the air diffuser and to form the filter membrane from a flat membrane, The guide surface that guides the bubbles generated by the air supply of the above upward through a path longer than the immersion depth of the air diffusing tube is formed on the membrane surface of the filtration membrane. The filtration membranes may be arranged in parallel with each other, and the plurality of filtration membranes may be arranged in parallel in the vertical direction so that the path has a spiral shape. Further, the inner wall surface is formed into a cylindrical shape. If so, it is more preferable that a plurality of the filtration membranes are arranged in parallel in the vertical direction so that the path has a zigzag shape, and the action and effect thereof are as follows.
【０００６】[0006]
【作用】つまり、散気管から生じた気泡は、平膜形式の
濾過膜の表面に案内されて前記散気管の浸漬深さよりも
長い経路を通って上方に導かれるわけであるから、前記
気泡は長い経路にわたって長時間被処理水に接触するの
で、前記気泡から前記被処理水中への酸素の溶け込みが
より多く行われるようになった。また、前記経路は、濾
過膜を構成する平膜の膜表面で形成してあるので、前記
気泡を誘導しやすく、前記気泡の上昇にともない被処理
水に前記濾過膜の表面に沿った流れを生じさせ、その、
被処理水の流れ（以下、水流と略称する）は、濾過膜に
よって一定方向に制御しやすく、水処理槽内を全体にわ
たって循環させることで被処理水全体を効率良く処理で
きるようになった。In other words, the bubbles generated from the air diffuser are guided to the surface of the flat membrane type filtration membrane and guided upward through a path longer than the immersion depth of the air diffuser. Since the water to be treated is in contact with the water for a long time over a long path, more oxygen is dissolved into the water to be treated from the bubbles. Further, since the route is formed on the surface of the flat membrane that constitutes the filtration membrane, it is easy to induce the bubbles, and the flow along the surface of the filtration membrane to the water to be treated is accompanied by the rise of the bubbles. Cause that,
The flow of water to be treated (hereinafter abbreviated as water flow) can be easily controlled in a certain direction by a filtration membrane, and the entire water to be treated can be efficiently treated by circulating the water throughout the water treatment tank.
【０００７】また、前記濾過膜を、それぞれ傾斜させて
並設、または、前記経路が螺旋状になるように並設して
あれば、前記水流を、水処理槽内で旋回する渦巻き状に
することができ（以下、このような水流を旋回流と称す
る）、気泡と被処理水との接触を高効率に行うことが出
来るようになるので、気泡から被処理水への酸素溶解効
率が良好になる。[0007] Further, if the filtration membranes are inclined and arranged in parallel, or if the paths are arranged in parallel so as to form a spiral shape, the water flow is made into a spiral shape that swirls in the water treatment tank. (Hereinafter, such a water flow is referred to as a swirl flow), and the bubbles and the water to be treated can be brought into contact with each other with high efficiency, so that the oxygen dissolution efficiency from the bubbles to the water to be treated is good. become.
【０００８】さらに、水処理槽の内壁面が円筒状にして
あれば、水処理槽内に内壁面に沿った旋回流が生じやす
く、そのために、水処理槽内の被処理水が滞留するデッ
ドスペースがなくなり、前記被処理水を効率よく濾過膜
に接触させることが出来る。Further, if the inner wall surface of the water treatment tank is cylindrical, a swirling flow along the inner wall surface is likely to occur in the water treatment tank, which causes dead water in the water treatment tank to accumulate. Since there is no space, the water to be treated can be efficiently brought into contact with the filtration membrane.
【０００９】また、気泡の導かれる経路がジグザグ状に
なるように前記濾過膜を並設してあれば、前記水流は旋
回流にならずとも、前記被処理水は水処理槽内を、隈な
く循環しつつ、濾過膜に接触する状態を維持しつつ、前
記気泡は長い経路にわたって前記被処理水に接触するの
で、前記気泡から前記被処理水へ酸素が溶け込みやすく
出来る。Further, if the filtration membranes are arranged side by side so that the path through which the bubbles are guided are zigzag-shaped, the water to be treated will not be swirled, but the water to be treated will not pass through the inside of the water treatment tank. Since the air bubbles come into contact with the water to be treated over a long path while maintaining the state of contacting with the filtration membrane while circulating without being circulated, oxygen can easily dissolve into the water to be treated from the air bubbles.
【００１０】[0010]
【発明の効果】従って、気泡から被処理水へ酸素が溶け
込みやすくなったので、水処理槽内で好気性菌の活動は
活発になり、被処理水の処理性能が向上し、高度な水処
理が出来るようになった。その結果、廃水等を放流する
際の環境保全等に、より一層役立つようになった。EFFECTS OF THE INVENTION Therefore, since it becomes easier for oxygen to dissolve into the water to be treated from the bubbles, the activity of aerobic bacteria in the water treatment tank becomes active, the treatment performance of the water to be treated is improved, and the advanced water treatment is performed. Is now possible. As a result, it has become even more useful for environmental protection when discharging wastewater and the like.
【００１１】さらに、前記濾過膜が平膜であることか
ら、定容積あたりの濾過膜の表面積を大きく出来るの
で、前記水流と前記濾過膜との接触効率が高く、濾過効
率を高くでき、また、洗浄が容易であるため、メンテナ
ンスが容易である。また、濾過膜は気泡を導く案内面と
なるために、気泡や前記水流は平膜表面に衝突して、そ
の平膜表面において乱流が生じ易くなり、そのために、
微生物や浮遊汚泥等の固形物が平膜に付着して前記濾過
膜が目詰まりしてしまうということが防止され、長期使
用に耐えられるようになる。Further, since the filtration membrane is a flat membrane, the surface area of the filtration membrane per constant volume can be increased, so that the contact efficiency between the water flow and the filtration membrane is high, and the filtration efficiency can be increased. Easy to clean and easy to maintain. Further, since the filtration membrane serves as a guide surface for guiding the bubbles, the bubbles and the water flow collide with the flat membrane surface, and turbulent flow easily occurs on the flat membrane surface.
It is possible to prevent solid matters such as microorganisms and suspended sludge from adhering to the flat membrane and clogging the filtration membrane, and it is possible to endure long-term use.
【００１２】また、水処理槽内壁面を円筒状に形成する
とともに、外壁面まで円筒形に形成してあれば、耐圧性
能をも向上することが出来る。If the inner wall surface of the water treatment tank is formed in a cylindrical shape and the outer wall surface is also formed in a cylindrical shape, the pressure resistance performance can be improved.
【００１３】[0013]
【実施例】以下に本発明の水処理槽の実施例として、浄
化槽を一例に挙げ、図面に基づいて説明する。図１に示
すように、上流側から、沈殿分離槽Ｎ、流量調整槽Ｂ、
平膜分離槽Ｅを、この順に被処理液が流れるように設け
て浄化槽を構成してある。EXAMPLE A septic tank will be described below as an example of the water treatment tank of the present invention, and will be described with reference to the drawings. As shown in FIG. 1, from the upstream side, a precipitation separation tank N, a flow rate adjustment tank B,
The flat membrane separation tank E is provided so that the liquid to be treated flows in this order to form a septic tank.
【００１４】図１に示すように、前記沈殿分離槽Ｎは、
被処理液中の有機物の嫌気分解及び、硝酸性窒素の脱窒
を行う嫌気性微生物を育成する容器からなり、被処理液
を流量調整槽Ｂに移流させる移流管Ｋ１を内装してあ
る。As shown in FIG. 1, the precipitation separation tank N is
An advection pipe K1 for advancing the liquid to be processed to the flow rate adjusting tank B is provided, which is composed of a container for growing anaerobic microorganisms for anaerobic decomposition of organic matter in the liquid to be processed and denitrification of nitrate nitrogen.
【００１５】前記流量調整槽Ｂは、移送管Ｋ２を内装し
た容器であり、前記沈殿分離槽Ｎから移流した被処理水
を、その流量調整槽Ｂ底部からポンプＰ１で、後続の前
記平膜分離槽Ｅに定常的に移送させる構成にしてある。
また、前記沈殿分離槽Ｎから、被処理水とともに移流し
た固形物を衝突させて粉砕するための柵体Ｈを設けてあ
り、さらに、散気管Ｄ１よりエアを供給し、気泡をその
柵体Ｈに衝突させ、前記柵体Ｈに付着した固形物をさら
に粉砕させて、前記平膜分離槽Ｅに移送可能にする構成
にしてある。The flow rate adjusting tank B is a container in which a transfer pipe K2 is installed, and the water to be treated transferred from the precipitation separating tank N is pumped from the bottom of the flow rate adjusting tank B by a pump P1 to follow the flat membrane separation. It is configured to be constantly transferred to the tank E.
Further, a barrier body H is provided for colliding and crushing the solid matter advancing together with the water to be treated from the settling / separation tank N. Further, air is supplied from the air diffusing pipe D1 to generate bubbles from the barrier body H. And the solid matter attached to the fence H is further crushed and can be transferred to the flat membrane separation tank E.
【００１６】前記平膜分離槽Ｅは、消毒槽Ｑを一体付設
した容器からなる。The flat membrane separation tank E is a container integrally provided with a disinfection tank Q.
【００１７】尚、これらの容器は、それぞれ円筒形に形
成してあり、上部には点検補修用のマンホ−ルを、それ
ぞれに設けてあり、底部は角部を切り取った逆円錐台状
にしてあり、この順に連通管Ｊ１，Ｊ２で連通連結して
ある。Each of these containers is formed in a cylindrical shape, and a manhole for inspection and repair is provided in each of the upper parts, and the bottom part is formed into an inverted truncated cone shape with corners cut off. Yes, they are connected in this order by communication pipes J1 and J2.
【００１８】また、図１，２に示すように、前記平膜分
離槽Ｅには、濾過膜Ｃを設けてあり、また、前記平膜分
離槽Ｅでは、その平膜分離槽Ｅ内の被処理水中の残りの
有機物の分解や、アンモニア性窒素の硝化を行う好気性
微生物を育成してあり、前記濾過膜Ｅにより、前記好気
性微生物と、前記被処理水とを分離可能にしてある。ま
た、平膜分離槽Ｅ内に被処理液の循環流を生じさせ、平
膜に被処理水をよく接触させ、且つ好気性微生物に必要
な酸素を与えるためのエア供給を行う散気管Ｄ２を設け
てある。また、平膜分離槽Ｅで生じた余剰汚泥や硝化さ
れた被処理水等は、沈殿分離槽Ｎに返送管Ａを通じてポ
ンプＰ２で返送する構成にしてある。Further, as shown in FIGS. 1 and 2, the flat membrane separation tank E is provided with a filtration membrane C, and in the flat membrane separation tank E, the membrane inside the flat membrane separation tank E is covered. Aerobic microorganisms that decompose organic matters remaining in the treated water and nitrify ammoniacal nitrogen are grown, and the aerobic microorganisms can be separated from the water to be treated by the filtration membrane E. In addition, a diffuser pipe D2 is provided for generating a circulating flow of the liquid to be treated in the flat membrane separation tank E, bringing the water to be treated into good contact with the flat membrane, and supplying air for supplying oxygen required for aerobic microorganisms. It is provided. Further, the excess sludge generated in the flat sheet membrane separation tank E, the nitrified water to be treated and the like are returned to the precipitation separation tank N through the return pipe A by the pump P2.
【００１９】前記濾過膜Ｃは、複数の平膜Ｃ１をそれぞ
れ傾斜させて並設して形成してある。従って、前記散気
管Ｄから供給されたエアは、気泡となって上昇し、前記
平膜Ｃ１に衝突して平膜Ｃ１表面の傾斜に沿った経路を
案内されて上昇する。そのため、被処理水が形成する水
流は、前記気泡が螺旋状に上昇するのに従って、前記平
膜分離槽Ｅ内壁面に沿った旋回流となる（図２矢印参
照）とともに、気泡中の酸素は、前記旋回流に伴って前
記被処理液中に溶解する。前記被処理液は旋回流に従っ
て濾過膜Ｃと接触することで好気処理を行われる。ま
た、底部は角部を逆円錐台状に切り欠いた形状にしてあ
ることで、この平膜分離槽Ｅでは、汚泥等の沈殿物が旋
回流によって巻き上げられ、沈積しにくい状態になって
いる。また、前記平膜分離槽Ｅは、ほぼ円筒状であるか
ら全体的に耐圧強度が高くなっている。The filtration membrane C is formed by arranging a plurality of flat membranes C1 in a tilted manner. Therefore, the air supplied from the air diffuser D rises as bubbles, collides with the flat membrane C1, and is guided along the slope of the surface of the flat membrane C1 to rise. Therefore, the water flow formed by the water to be treated becomes a swirling flow along the inner wall surface of the flat membrane separation tank E as the bubbles rise spirally (see the arrow in FIG. 2), and the oxygen in the bubbles is Dissolves in the liquid to be treated along with the swirling flow. The liquid to be treated comes into contact with the filtration membrane C in a swirling flow to perform aerobic treatment. In addition, since the bottom portion has a shape in which the corner portion is cut out in the shape of an inverted truncated cone, in this flat sheet membrane separation tank E, sediment such as sludge is rolled up by the swirling flow, and is difficult to deposit. . Further, since the flat membrane separation tank E has a substantially cylindrical shape, the pressure resistance strength is high as a whole.
【００２０】さらに、平膜分離槽Ｅには吸引ポンプＰ３
が設けてあり、処理済の被処理水を吸引濾過して消毒槽
Ｑに移送するべく濾過膜Ｃに吸引管Ｋ３を介して連設し
てある。Further, the flat sheet separation tank E has a suction pump P3.
Is provided and is connected to the filtration membrane C via the suction pipe K3 in order to suction-filter the treated water to be treated and transfer it to the disinfection tank Q.
【００２１】上記の構成により、被処理水は、被処理水
流入口Ｉから前記沈殿分離槽Ｎに流入し、嫌気処理が行
われたのち、移流管Ｋ１を通って連通管Ｊ１から前記流
量調整槽Ｂに移流されて、一時貯留されたのち、被処理
水移送管Ｋ２および連通管Ｊ２を通して平膜分離槽Ｅに
移送され、好気処理を行われる。好気処理の済んだ被処
理液は濾過膜Ｃから被処理水吸引管Ｋ３を通って前記消
毒槽Ｑに導かれ、ここで固形消毒剤と接触して消毒され
た後、処理済水として放流口Ｚから外部に放流される。With the above construction, the water to be treated flows into the sedimentation separation tank N from the water inlet I to be treated for anaerobic treatment, and then passes through the advection pipe K1 to the flow control tank from the communication pipe J1. After being transferred to B and temporarily stored, it is transferred to the flat membrane separation tank E through the treated water transfer pipe K2 and the communication pipe J2, and aerobically treated. The liquid to be treated that has undergone aerobic treatment is guided from the filtration membrane C to the disinfection tank Q through the pipe to be treated water suction pipe K3, where it is contacted with the solid disinfectant and disinfected, and then discharged as treated water. It is discharged from the mouth Z to the outside.
【００２２】〔別実施例〕以下に別実施例を説明する。[Other Embodiment] Another embodiment will be described below.
【００２３】先の実施例では、平膜Ｃ１を傾斜させて並
設して濾過膜Ｃを形成し、気泡を導く経路を形成した
が、これに限らず、以下のように構成してもよい。In the previous embodiment, the flat membranes C1 were inclined and arranged side by side to form the filtration membrane C, and the path for guiding the bubbles was formed. However, the present invention is not limited to this, and may be configured as follows. .
【００２４】（１） 図３に示すように、スクリュウ状
に成形した平膜Ｃ２をもって、濾過膜Ｃを形成してもよ
い。これにより、散気管より生じた気泡はスパイラル状
に上昇し、被処理水に旋回流を生じさせることができ
る。ここで、平膜とは薄板状の膜体を総称するものと
し、スクリュウ状の平膜Ｃ２は、一体形成してあって
も、複数の偏平な平膜を継合わせて前記経路がスパイラ
ル状になるように構成してあってもよい。(1) As shown in FIG. 3, the filtration membrane C may be formed by a flat membrane C2 formed in a screw shape. Thereby, the bubbles generated from the air diffuser rise in a spiral shape, and a swirling flow can be generated in the water to be treated. Here, the flat film is a generic term for a thin plate-shaped film body, and even if the screw-shaped flat film C2 is integrally formed, a plurality of flat flat films are joined to form a spiral path. It may be configured to be.
【００２５】（２） 図４に示すように、複数の平膜Ｃ
３をジクザグ状に配置して前記経路をジグザグ状になる
ように配置して濾過膜Ｃを形成してあってもよい。これ
により、散気管Ｄより生じた気泡はジグザグ状に上昇
し、被処理水にジグザグ状の水流を形成させることがで
きる。つまり、このような水流を形成することで被処理
水は平膜Ｃ３に接触しつつ旋回流を形成するので、平膜
の目詰まりを防止しつつ、好気性菌に酸素を供給するこ
とができるのである。従って、このような構成にしてあ
れば、平膜分離槽Ｅ内壁面を円筒状に形成することな
く、直方体型に設計しても被処理水を有効に循環させる
ことができる。(2) As shown in FIG. 4, a plurality of flat films C
The filter membrane C may be formed by arranging 3 in a zigzag pattern and arranging the paths in a zigzag pattern. As a result, the bubbles generated from the air diffuser D rise in a zigzag shape, and a zigzag water flow can be formed in the water to be treated. That is, by forming such a water flow, the water to be treated forms a swirl flow while contacting the flat membrane C3, so that oxygen can be supplied to the aerobic bacteria while preventing clogging of the flat membrane. Of. Therefore, with such a structure, the water to be treated can be effectively circulated without forming the inner wall surface of the flat sheet separation tank E into a cylindrical shape, even if it is designed in a rectangular parallelepiped shape.
【００２６】先の実施例では、各槽を別体に形成して、
連通管Ｊ１，Ｊ２で連通する構成にしたが、全体を一体
に形成してあっても前記平膜分離槽Ｅだけを別体に形成
し、他を一体に形成してあってもよく、このようにした
場合には、全体をコンパクトに設計することが出来ると
ともに、設置が容易であるという利点がある。また、前
述のように水処理槽を、直方体型に設計した場合に一体
成型が容易であることは言うまでもない。In the above embodiment, each tank is formed as a separate body,
The communication pipes J1 and J2 communicate with each other. However, even if the whole is integrally formed, only the flat membrane separation tank E may be separately formed and the other may be integrally formed. In this case, there is an advantage that the whole can be designed compact and the installation is easy. Needless to say, when the water treatment tank is designed to have a rectangular parallelepiped shape as described above, it is easy to perform integral molding.
【００２７】さらに、本発明の水処理槽は、浄化槽に限
られるものではなく、様々な水処理槽に用いることが出
来ることは言うまでもない。Further, it goes without saying that the water treatment tank of the present invention is not limited to the septic tank and can be used in various water treatment tanks.
【００２８】尚、特許請求の範囲の項に、図面との対照
を便利にするために符号を記すが、該記入により本発明
は添付図面の構成に限定されるものではない。It should be noted that reference numerals are added to the claims for convenience of comparison with the drawings, but the present invention is not limited to the configurations of the accompanying drawings by the entry.
【図１】本発明の水処理槽の実施例としての浄化槽を示
す縦断側面図FIG. 1 is a vertical sectional side view showing a septic tank as an example of a water treatment tank of the present invention.
【図２】実施例における好気処理槽の一部破断全体斜視
図FIG. 2 is a partially cutaway perspective view of an aerobic treatment tank according to an embodiment.
【図３】別実施例（１）における好気処理槽の縦断側面
図FIG. 3 is a vertical sectional side view of an aerobic treatment tank according to another embodiment (1).
【図４】別実施例（２）における好気処理槽の縦断側面
図FIG. 4 is a vertical sectional side view of an aerobic treatment tank according to another embodiment (2).
Ｃ 濾過膜 Ｄ２ 散気管 Ｃ１ 平膜 C Filtration membrane D2 Air diffuser C1 Flat membrane
フロントページの続き (72)発明者 本田 和之 滋賀県甲賀郡甲西町高松２番地の１ 株式 会社クボタ滋賀工場内 (72)発明者 岩橋 正修 滋賀県甲賀郡甲西町高松２番地の１ 株式 会社クボタ滋賀工場内Front Page Continuation (72) Inventor Kazuyuki Honda, 1 Takamatsu, Kosai-cho, Koga-gun, Shiga Prefecture 1 Stock company, Kubota Shiga Factory (72) Inventor Masahisa Iwahashi, Koga-cho, Koga-gun, Shiga Prefecture 1 Kubota Company, Ltd. Inside the Shiga factory
Claims (5)
供給により曝気可能な散気管（Ｄ）を内装してある水処
理槽であって、 前記散気管（Ｄ）の上方に前記濾過膜を配置するととも
に、前記濾過膜（Ｃ）を平膜（Ｃ１）から構成し、前記
散気管（Ｄ２）からのエア供給により生じた気泡を前記
散気管（Ｄ）の浸漬深さよりも長い経路を通って上方へ
導く案内面を、前記濾過膜（Ｃ）の膜表面で形成してあ
る水処理槽。1. A water treatment tank having a filter membrane (C) and a diffuser pipe (D) capable of aeration by air supply, the filter membrane being above the diffuser pipe (D). And the filter membrane (C) is composed of a flat membrane (C1), and the air bubbles generated by the air supply from the air diffuser (D2) pass through a path longer than the immersion depth of the air diffuser (D). A water treatment tank in which a guide surface that leads upward through the membrane surface of the filtration membrane (C) is formed.
斜させて並設してある請求項１記載の水処理槽。2. The water treatment tank according to claim 1, wherein a plurality of the filtration membranes (C) are arranged in parallel with each other being inclined.
前記濾過膜（Ｃ）を上下方向に並設してある請求項１記
載の水処理槽。3. The water treatment tank according to claim 1, wherein a plurality of the filtration membranes (C) are vertically arranged side by side so that the path has a spiral shape.
〜３記載の水処理槽。4. The inner wall surface is formed in a cylindrical shape.
~ 3 water treatment tank.
数の前記濾過膜を上下方向に並設してある請求項１記載
の水処理槽。5. The water treatment tank according to claim 1, wherein a plurality of the filtration membranes are vertically arranged side by side so that the path has a zigzag shape.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23070993A JPH0780488A (en) | 1993-09-17 | 1993-09-17 | Water-treating tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP23070993A JPH0780488A (en) | 1993-09-17 | 1993-09-17 | Water-treating tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0780488A true JPH0780488A (en) | 1995-03-28 |
Family
ID=16912085
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP23070993A Pending JPH0780488A (en) | 1993-09-17 | 1993-09-17 | Water-treating tank |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0780488A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011519309A (en) * | 2008-04-28 | 2011-07-07 | ポステック アカデミー−インダストリー ファンデーション | Biofilm reactor with helical structure and water treatment apparatus using the same |
| WO2013103083A1 (en) * | 2012-01-05 | 2013-07-11 | 住友重機械工業株式会社 | Membrane separation method and membrane separation apparatus |
-
1993
- 1993-09-17 JP JP23070993A patent/JPH0780488A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011519309A (en) * | 2008-04-28 | 2011-07-07 | ポステック アカデミー−インダストリー ファンデーション | Biofilm reactor with helical structure and water treatment apparatus using the same |
| WO2013103083A1 (en) * | 2012-01-05 | 2013-07-11 | 住友重機械工業株式会社 | Membrane separation method and membrane separation apparatus |
| CN104010716A (en) * | 2012-01-05 | 2014-08-27 | 住友重机械工业株式会社 | Membrane separation method and membrane separation apparatus |
| JPWO2013103083A1 (en) * | 2012-01-05 | 2015-05-11 | 住友重機械工業株式会社 | Membrane separation method and membrane separation apparatus |
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