JPH034983A - Membrane module for activated sludge treating apparatus - Google Patents
Membrane module for activated sludge treating apparatusInfo
- Publication number
- JPH034983A JPH034983A JP1137257A JP13725789A JPH034983A JP H034983 A JPH034983 A JP H034983A JP 1137257 A JP1137257 A JP 1137257A JP 13725789 A JP13725789 A JP 13725789A JP H034983 A JPH034983 A JP H034983A
- Authority
- JP
- Japan
- Prior art keywords
- membrane
- filter
- supporting plate
- filtration
- permeate
- 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.)
- Granted
Links
- 239000012528 membrane Substances 0.000 title claims abstract description 120
- 239000010802 sludge Substances 0.000 title claims description 20
- 238000001914 filtration Methods 0.000 claims abstract description 46
- 239000012466 permeate Substances 0.000 claims description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 20
- 239000007788 liquid Substances 0.000 abstract description 13
- 230000007423 decrease Effects 0.000 abstract description 4
- 230000000694 effects Effects 0.000 abstract description 4
- 238000000926 separation method Methods 0.000 abstract description 3
- 239000000706 filtrate Substances 0.000 abstract 2
- 238000000034 method Methods 0.000 abstract 1
- 238000005273 aeration Methods 0.000 description 12
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 239000001301 oxygen Substances 0.000 description 4
- 229910052760 oxygen Inorganic materials 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 230000003247 decreasing effect Effects 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 210000003437 trachea Anatomy 0.000 description 1
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
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、有機性廃水の活性汚泥処理装置の膜モジュー
ルに関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a membrane module for an activated sludge treatment apparatus for organic wastewater.
従来の技術
従来より、有機性廃水の活性汚泥処理装置においては、
たとえば第４図に示すように、曝気槽１内に上下両面が
開放された方形の箱枠２を設け、箱枠２内に複数個の膜
モジュール３を垂直に一定間隔ａをおいて配列し、膜モ
ジュール３の下方に散、、気管４を配置している。５は
曝気槽１に開口する原水供給管、６は曝気槽１の底部に
接続した汚泥引抜きポンプである。膜モジュール３は、
凹凸状に曲成された膜支持体７の両面を濾過膜８により
被覆したもので、膜支持体７の上端部に接続した透過液
吸引管９を介して透過液集水管１０に接続されている。Conventional technology Conventionally, in activated sludge treatment equipment for organic wastewater,
For example, as shown in FIG. 4, a rectangular box frame 2 with open top and bottom surfaces is provided in an aeration tank 1, and a plurality of membrane modules 3 are arranged vertically within the box frame 2 at regular intervals a. A trachea 4 is disposed below the membrane module 3. 5 is a raw water supply pipe opening into the aeration tank 1, and 6 is a sludge drawing pump connected to the bottom of the aeration tank 1. The membrane module 3 is
Both sides of a membrane support 7 curved into an uneven shape are covered with a filtration membrane 8, and the membrane support 7 is connected to a permeate collection pipe 10 via a permeate suction pipe 9 connected to the upper end of the membrane support 7. There is.
透過液集水管１０は、途中に吸引ポンプ１１を備え、透
過液Ｗｊ１２に開口している。散気管４は、給気管１３
を介してブロワ−１４に接続されている。The permeated liquid collection pipe 10 is provided with a suction pump 11 in the middle, and is open to the permeated liquid Wj12. The air diffuser pipe 4 is the air supply pipe 13
It is connected to the blower 14 via.
原水供給管５から曝気槽１内に供給された原水１５は、
槽内で活性汚泥により消化処理されて消化処理水１６と
なる。その際、散気管４は、ブロワ−１４から供給され
る空気などの酸素を含有する曝気用気体１７を膜モジュ
ール３の間に吹き込み、活性汚泥中の微生物に酸素を供
給する。消化処理水１６は、膜モジュール３を介して吸
引ポンプ１１により吸引され、膜モジュール３により固
液分離される。The raw water 15 supplied into the aeration tank 1 from the raw water supply pipe 5 is
The water is digested with activated sludge in the tank and becomes digested water 16. At this time, the aeration pipe 4 blows an aeration gas 17 containing oxygen, such as air supplied from the blower 14, between the membrane modules 3 to supply oxygen to the microorganisms in the activated sludge. The digested water 16 is sucked by the suction pump 11 through the membrane module 3, and is separated into solid and liquid by the membrane module 3.
すなわち、消化処理水１６中の汚泥は濾過膜８により捕
捉され、他方、濾過膜８を透過した清浄な透過液１８は
、透過液吸引管９から透過液集水管１０を経由して透過
液槽１２内に貯留される。その際、膜モジュール３の間
には曝気用気体１７の気泡のエアリフト作用により消化
処理水１６の上昇流が生じており、この上昇流によって
濾過膜８に対する汚泥の付着を困難にして濾過膜８の目
詰りを防止していた。That is, the sludge in the digested water 16 is captured by the filtration membrane 8, while the clean permeate 18 that has passed through the filtration membrane 8 is passed from the permeate suction pipe 9 to the permeate collection pipe 10 to the permeate tank. It is stored in 12. At that time, an upward flow of the digested water 16 is generated between the membrane modules 3 due to the air lift effect of the bubbles of the aeration gas 17, and this upward flow makes it difficult for sludge to adhere to the filtration membrane 8. This prevented clogging.
発明が解決しようとする課Ｕ
しかし、上記従来の膜モジュール３においては、吸引状
態のとき、濾過膜８の一部が膜支持体７の凸部に密着し
て両者の間に透過液１８の流路がなくなるとともに、そ
の部分に吸引力が有効に作用しなくなり、濾過機能が低
下する。そのため、濾過膜８の有効濾過面積が減少し、
濾過効率が低下するという問題があった。さらに、構造
が複雑であるため、高価になり、取扱いも容易でないと
いう問題があった。Problem to be Solved by the Invention U However, in the conventional membrane module 3 described above, in the suction state, a part of the filtration membrane 8 comes into close contact with the convex part of the membrane support 7, and the permeate 18 is not formed between the two. As the flow path disappears, suction force no longer acts effectively on that portion, and the filtration function deteriorates. Therefore, the effective filtration area of the filtration membrane 8 decreases,
There was a problem that filtration efficiency decreased. Furthermore, since the structure is complicated, it is expensive and difficult to handle.
本発明は、従来の膜モジュールを改良して、このような
問題点を解消することを目的とする。The present invention aims to solve these problems by improving conventional membrane modules.
課題を解決するための手段
上記目的を達成するために、本発明の活性汚泥処理装置
の膜モジュールは、膜支持板の両面を濾過膜により被覆
し、膜支持板の一端縁に透過液吸引管を固着し、膜支持
板と濾過膜との間に透過液の流路間隙を形成する膜支持
ネットを設け、前記流路間隙を透過液吸引管に連通させ
る連通孔を透過液吸引管に複数個設けた構成としたもの
である。Means for Solving the Problems In order to achieve the above objects, the membrane module of the activated sludge treatment apparatus of the present invention has a membrane support plate covered with filtration membranes on both sides, and a permeate suction pipe provided at one end edge of the membrane support plate. A membrane support net is provided between the membrane support plate and the filtration membrane to form a flow path gap for the permeate, and a plurality of communication holes are provided in the permeate suction tube to communicate the flow path gap with the permeate suction tube. The configuration is such that there are separate
作用
上記本発明の構成において、透過液吸引管に吸引力を作
用させると、消化処理水は濾過膜を介して吸引され、固
液分離される。すなわち、消化処理水中の汚泥は濾過膜
により捕捉され、他方、濾過膜を透過した清浄な透過液
は、膜支持板と濾過膜との間に膜支持ネットにより形成
された流路間隙を経由して、連通孔から透過液吸引管内
に吸引される。このとき、濾過膜は、吸引力により膜支
持板の方に吸引されるが、膜支持ネットを介して膜支持
板に保持されるので、膜支持体と濾過膜との間には膜支
持ネットにより常に流路間隙が濾過膜の全面にわたって
維持される。そのため、吸引力は濾過膜の全面に作用し
、濾過膜の有効濾過面積の減少が防止されるとともに、
濾過効率の向上が図られる。また、膜支持板は単なる平
板でよいので、構造が簡単になる。したがって、膜モジ
ュールは、安価になり、取扱いも容易になる。Function In the above structure of the present invention, when a suction force is applied to the permeate suction tube, the digested water is suctioned through the filtration membrane and separated into solid and liquid. That is, the sludge in the digestion water is captured by the filtration membrane, while the clean permeate that has passed through the filtration membrane passes through the channel gap formed by the membrane support net between the membrane support plate and the filtration membrane. The permeate is then sucked into the permeate suction tube through the communication hole. At this time, the filtration membrane is sucked toward the membrane support plate by the suction force, but is held on the membrane support plate via the membrane support net, so there is a membrane support net between the membrane support and the filtration membrane. Therefore, the flow path gap is always maintained over the entire surface of the filtration membrane. Therefore, the suction force acts on the entire surface of the filtration membrane, preventing a decrease in the effective filtration area of the filtration membrane, and
Filtration efficiency is improved. Moreover, since the membrane support plate may be a simple flat plate, the structure becomes simple. The membrane module is therefore cheaper and easier to handle.
実施例
以下、本発明の一実施例を第１図〜第３図に基づいて説
明する。EXAMPLE Hereinafter, an example of the present invention will be described based on FIGS. 1 to 3.
本実施例の活性汚泥処理装置においては、第１図に示す
ように、曝気槽２１内に箱枠２２を設け、箱枠２２内に
複数個の膜モジュール２３を垂直に一定間隔Ａをおいて
配列し、膜モジュール２３の下方に散気管２４を配置し
ている。曝気４！１２１には、上方に原水供給管２５が
開口し、底部に汚泥引抜きポンプ２６を備えた汚泥引抜
き管２７が接続されている０箱枠２２は、方形で、上下
両面が開放されている。１１５Ｉモジユール２３は、第
２図および第３図に示すように、方形のプラスチック製
平板からなる膜支持板２８の両面を濾過膜２９により被
覆し、膜支持板２８の上端縁に沿ってプラスチック製透
過液吸引管３０と、下端縁に沿ってプラスチック製支持
管３１とをそれぞれ固着し、膜支持板２８と濾過膜２９
との間に膜支持ネット３２を介装したものである。濾過
膜２９は、袋状に形成し、上端の開口周縁部を透過液吸
引管３０に接着剤で接着する。透過液吸引管３０は、両
端部が膜支持板２８の両側縁から外方に突出し、一端が
開口し、他端は閉じている。支持管３１もまた、両端部
が膜支持板２８の両側縁から外方に突出し、両端は閉じ
ている。膜支持ネヅト３２は、膜支持板２８と濾過膜２
９との間に透過液の流路間隙を形成する。In the activated sludge treatment apparatus of this embodiment, as shown in FIG. A diffuser pipe 24 is arranged below the membrane module 23. The aeration 4!121 has a raw water supply pipe 25 open at the top and a sludge drawing pipe 27 equipped with a sludge drawing pump 26 at the bottom.The box frame 22 is rectangular and has both upper and lower sides open. There is. As shown in FIGS. 2 and 3, the 115I module 23 has a membrane support plate 28 made of a rectangular plastic flat plate covered with a filtration membrane 29 on both sides, and a plastic membrane along the upper edge of the membrane support plate 28. The permeate suction tube 30 and the plastic support tube 31 are fixed along the lower edge, and the membrane support plate 28 and the filtration membrane 29 are attached.
A membrane support net 32 is interposed between the two. The filtration membrane 29 is formed into a bag shape, and the upper opening periphery is bonded to the permeate suction tube 30 with an adhesive. Both ends of the permeate suction tube 30 protrude outward from both side edges of the membrane support plate 28, one end being open and the other end being closed. Both ends of the support tube 31 also protrude outward from both side edges of the membrane support plate 28, and both ends are closed. The membrane support net 32 connects the membrane support plate 28 and the filtration membrane 2.
9 to form a flow path gap for the permeated liquid.
透過液吸引管３０には、前記流路間隙を透過液吸引管３
０に連通させる連通孔３３を複数個設けている。The permeate suction tube 30 has the channel gap connected to the permeate suction tube 30.
A plurality of communication holes 33 are provided to communicate with 0.
膜モジュール２３は、透過液吸引管３０および支持管３
１の突出した両端部を介して箱枠２２に固定し、透過液
吸引管３０の開口側端部を透過液集水管３４に接続する
。透過液集水管３４は、途中に吸引ポンプ３５を備え、
透過液槽３６の上方に開口している。散気管２４は、給
気管３７を介してブロワ−３８に接続する。The membrane module 23 includes a permeate suction tube 30 and a support tube 3.
1 is fixed to the box frame 22 via both protruding ends thereof, and the open end of the permeated liquid suction pipe 30 is connected to the permeated liquid collection pipe 34. The permeated liquid collection pipe 34 is equipped with a suction pump 35 in the middle,
It opens above the permeate tank 36. The air diffuser 24 is connected to a blower 38 via an air supply pipe 37.
次に、上記構成における作用について説明する。Next, the operation of the above configuration will be explained.
原水供給管２５から原水３９を曝気ＷＪ２１内に供給す
ると、原水３９は槽内で活性汚泥により消化処理されて
消化処理水４０となる。その際、散気管２４は、ブロワ
−３８から供給される空気などの酸素を含有する曝気用
気体４１を膜モジュール２３の間に吹き込み、活性汚泥
中の微生物に酸素を供給する。消化処理水４０は、膜モ
ジュール２３を介して吸引ポンプ３５により吸引され、
膜モジュール２３により固液分離される。すなわち、消
化処理水４０中の汚泥は濾過膜２９により捕捉され、他
方、濾過膜２９を透過した清浄な透過液４２は、膜支持
板２８と濾過ＷＡ２９との間に膜支持ネット３２により
形成された流路間隙を経由して、連通孔３３から透過液
吸引管３０内に吸引され、透過液集水管３４を経由して
透過液槽３６内に貯留される。その際、膜モジュール２
３の間には曝気用気体４１の気泡のエアリフト作用によ
り消化処理水４０の上昇流が生じており、この上昇流が
濾過膜２９に付着した汚泥を濾過ｆｉ２９から離脱させ
て、濾過膜２９の目詰りを防止する。When raw water 39 is supplied into the aeration WJ 21 from the raw water supply pipe 25, the raw water 39 is digested with activated sludge in the tank and becomes digested water 40. At this time, the aeration pipe 24 blows an aeration gas 41 containing oxygen, such as air supplied from the blower 38, between the membrane modules 23 to supply oxygen to the microorganisms in the activated sludge. The digested water 40 is sucked through the membrane module 23 by the suction pump 35,
Solid-liquid separation is performed by the membrane module 23. That is, the sludge in the digested water 40 is captured by the filtration membrane 29, while the clean permeate 42 that has passed through the filtration membrane 29 is captured by the membrane support net 32 between the membrane support plate 28 and the filtration WA 29. The permeate is sucked into the permeate suction pipe 30 through the communication hole 33 through the flow path gap, and is stored in the permeate tank 36 via the permeate collection pipe 34. At that time, membrane module 2
Between 3 and 3, an upward flow of the digested water 40 is generated due to the air lift effect of the bubbles of the aeration gas 41, and this upward flow causes the sludge adhering to the filtration membrane 29 to separate from the filtration fi 29. Prevent clogging.
そして、膜モジュール２３が消化処理水４０の固液分離
をするとき、濾過膜２９は、吸引力により膜支持板２８
の方に吸引されるが、膜支持ネット３２を介して膜支持
板２８に保持されるので、膜支持板２８と濾過膜２９と
の間には膜支持ネット３２により常に流路間隙が濾過膜
２９の全面にわたって維持される。When the membrane module 23 performs solid-liquid separation of the digested water 40, the filtration membrane 29 is moved to the membrane support plate 28 by suction force.
However, since it is held by the membrane support plate 28 via the membrane support net 32, there is always a flow path gap between the membrane support plate 28 and the filtration membrane 29 due to the membrane support net 32. 29 is maintained throughout the entire area.
そのため、吸引力は濾過［２９の全面に作用し、濾過Ｍ
２９の有効濾過面積の減少が防止されるとともに、濾過
効率の向上が図られる。また、膜支持板２８は単なる平
板であるので、構造が簡単になる。Therefore, the suction force acts on the entire surface of the filtration M
This prevents a decrease in the effective filtration area of No. 29 and improves filtration efficiency. Further, since the membrane support plate 28 is a simple flat plate, the structure is simplified.
したがって、膜モジュール２３は、安価になり、取扱い
も容易になる。Therefore, the membrane module 23 becomes inexpensive and easy to handle.
発明の効果
本発明は、以上説明したように、膜支持板と濾過膜との
間に膜支持ネットを設けたので、透過液の流路間隙が濾
過膜全面にわたって形成され、吸引力が濾過膜全面に作
用する。したがって、濾過膜の有効濾過面積の減少が防
止されるとともに、濾過効率の向上を図ることができる
。また、膜支持板が単なる平板でよいので、構造が簡単
・になる。Effects of the Invention As explained above, in the present invention, since the membrane support net is provided between the membrane support plate and the filtration membrane, the flow path gap for the permeate is formed over the entire surface of the filtration membrane, and the suction force is applied to the filtration membrane. It works all over. Therefore, the effective filtration area of the filtration membrane is prevented from decreasing, and the filtration efficiency can be improved. Furthermore, since the membrane support plate may be a simple flat plate, the structure is simplified.
したがって、膜モジュールは、安価になり、取扱いも容
易になる。The membrane module is therefore cheaper and easier to handle.
【図面の簡単な説明】
第１図は本発明の一実施例を示す活性汚泥処理装置の全
体構成図、第２図は第１図における膜モジュールの正面
図、第３図は第２図の■−■線断面図、第４図は従来の
活性汚泥処理装置の一例を示す全体構成図である。
２３・・・膜モジュール、２８・・・膜支持板、２９・
・・濾過膜、３０・・・透過液吸引管、３２・・・膜支
持ネット、３３・・・連通孔、４２・・・透過液。[Brief Description of the Drawings] Fig. 1 is an overall configuration diagram of an activated sludge treatment equipment showing one embodiment of the present invention, Fig. 2 is a front view of the membrane module in Fig. 1, and Fig. 3 is a diagram of the membrane module in Fig. 2. A sectional view taken along line 1--2, and FIG. 4 is an overall configuration diagram showing an example of a conventional activated sludge treatment apparatus. 23... Membrane module, 28... Membrane support plate, 29.
...filtration membrane, 30...permeated liquid suction tube, 32... membrane support net, 33... communicating hole, 42... permeated liquid.
Claims (1)
一端縁に透過液吸引管を固着し、膜支持板と濾過膜との
間に透過液の流路間隙を形成する膜支持ネットを設け、
前記流路間隙を透過液吸引管に連通させる連通孔を透過
液吸引管に複数個設けたことを特徴とする活性汚泥処理
装置の膜モジュール。1. A membrane support in which both sides of the membrane support plate are covered with a filtration membrane, a permeate suction tube is fixed to one edge of the membrane support plate, and a flow path gap for the permeate is formed between the membrane support plate and the filtration membrane. Set up a net,
A membrane module for an activated sludge treatment apparatus, characterized in that the permeate suction pipe is provided with a plurality of communication holes for communicating the flow path gap with the permeate suction pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1137257A JPH0722751B2 (en) | 1989-05-29 | 1989-05-29 | Membrane module of activated sludge treatment equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1137257A JPH0722751B2 (en) | 1989-05-29 | 1989-05-29 | Membrane module of activated sludge treatment equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH034983A true JPH034983A (en) | 1991-01-10 |
| JPH0722751B2 JPH0722751B2 (en) | 1995-03-15 |
Family
ID=15194438
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1137257A Expired - Lifetime JPH0722751B2 (en) | 1989-05-29 | 1989-05-29 | Membrane module of activated sludge treatment equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0722751B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7773854B2 (en) | 2003-06-16 | 2010-08-10 | Alpine Electronics, Inc. | Player, and source switching method for recording and playback apparatus |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5081974A (en) * | 1973-05-29 | 1975-07-03 | ||
| JPS61129094A (en) * | 1984-11-26 | 1986-06-17 | Nitto Electric Ind Co Ltd | Apparatus for treating membrane |
| JPS6398701U (en) * | 1986-12-12 | 1988-06-27 |
-
1989
- 1989-05-29 JP JP1137257A patent/JPH0722751B2/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5081974A (en) * | 1973-05-29 | 1975-07-03 | ||
| JPS61129094A (en) * | 1984-11-26 | 1986-06-17 | Nitto Electric Ind Co Ltd | Apparatus for treating membrane |
| JPS6398701U (en) * | 1986-12-12 | 1988-06-27 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7773854B2 (en) | 2003-06-16 | 2010-08-10 | Alpine Electronics, Inc. | Player, and source switching method for recording and playback apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0722751B2 (en) | 1995-03-15 |
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