JPH034984A - Membrane module for activated sludge treating apparatus - Google Patents
Membrane module for activated sludge treating apparatusInfo
- Publication number
- JPH034984A JPH034984A JP1137258A JP13725889A JPH034984A JP H034984 A JPH034984 A JP H034984A JP 1137258 A JP1137258 A JP 1137258A JP 13725889 A JP13725889 A JP 13725889A JP H034984 A JPH034984 A JP H034984A
- Authority
- JP
- Japan
- Prior art keywords
- membrane
- filtration
- membrane support
- filtrate
- filter membrane
- 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
- 239000012528 membrane Substances 0.000 title claims abstract description 164
- 239000010802 sludge Substances 0.000 title claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 52
- 230000001681 protective effect Effects 0.000 claims abstract description 18
- 238000001914 filtration Methods 0.000 claims description 73
- 238000011001 backwashing Methods 0.000 abstract description 17
- 239000012530 fluid Substances 0.000 abstract description 9
- 239000000706 filtrate Substances 0.000 abstract description 8
- 238000000034 method Methods 0.000 abstract description 4
- 238000005273 aeration Methods 0.000 description 17
- 230000007423 decrease Effects 0.000 description 7
- 239000007789 gas Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 239000008213 purified water Substances 0.000 description 4
- 230000004907 flux Effects 0.000 description 3
- -1 air Chemical compound 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 239000002351 wastewater Substances 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
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
- Activated Sludge Processes (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は、有機性廃水の消化処理を施す活性汚泥処理装
置において固液分離を行う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 that performs solid-liquid separation in an activated sludge treatment apparatus that performs a digestion process on organic wastewater.
従来の技術
従来、一般に活性汚泥処理装置においては、使用してい
る間に濾過膜が汚泥により目詰まりを起こすので、目詰
まりを防止するための提案が先に特願昭１１ｉ３−２３
８２９７号として行われており、この装置は第３図に示
すようなものである。第３図において、゛曝気槽１は原
水２の浄化処理を行うものであり、曝気槽１の内部には
複数個の膜モンユール３が垂直に一定間隔をおいて並列
に設けられている。そして、散気管４が膜モジュール３
の下方に配置されており、散気管４は空気などの酸素を
含有する曝気用気体５を膜モジュール３の間に吹き込む
ものである。また、膜モジュール３は膜支持体６を濾過
膜７で覆ったものであり、膜支持体６には濾過処理水吸
引管８に連通ずる濾過処理水流路９が形成されている。Conventional technology Conventionally, in activated sludge treatment equipment, the filtration membranes generally become clogged with sludge during use, so a proposal for preventing clogging was first proposed in Japanese Patent Application No. 11i3-23.
No. 8297, and this device is as shown in FIG. In FIG. 3, an aeration tank 1 is used to purify raw water 2, and inside the aeration tank 1, a plurality of membrane modules 3 are vertically arranged in parallel at regular intervals. Then, the air diffuser 4 is connected to the membrane module 3.
The aeration pipe 4 blows an aeration gas 5 containing oxygen, such as air, between the membrane modules 3 . Further, the membrane module 3 is a membrane support 6 covered with a filtration membrane 7, and the membrane support 6 is formed with a filtered water flow path 9 communicating with a filtered water suction pipe 8.
そして、散気管４から吹き出される曝気用気体５により
原水２を曝気して浄化処理し、浄化された浄化処理水ｌ
Ｏを膜モジュール３を通して吸引することにより固液分
離している。すなわち、膜モジュール３の濾過膜７で浄
化処理水１０中の汚泥を捕捉し、濾過膜７を透過して濾
過処理水流路９内に吸引された清浄な濾過処理水１１を
コ・！過熟理水吸引管８から取り出している。Then, the raw water 2 is aerated and purified by the aeration gas 5 blown out from the aeration pipe 4, and the purified purified water l
Solid-liquid separation is performed by suctioning O through the membrane module 3. That is, the sludge in the purified water 10 is captured by the filtration membrane 7 of the membrane module 3, and the clean filtered water 11 that has passed through the filtration membrane 7 and is sucked into the filtered water flow path 9 is collected! The overripe water is taken out from the suction pipe 8.
また、濾過膜７に汚泥が付着しにくいように、曝気用気
体５の気泡のエアリフト作用により膜モジュール３の間
に上昇流を生じさせていた。Further, in order to prevent sludge from adhering to the filtration membrane 7, an upward flow was generated between the membrane modules 3 by the air lift effect of the bubbles of the aeration gas 5.
発明が解決しようとする課題
しかし、上記した従来の構成では、吸引状態において膜
支持体６に圧接される濾過膜７の一定部分が濾過機能を
果たさない問題があった。すなわち、濾過膜７が膜支持
体６に圧接して両者の間に間隙がなくなると、その部分
に吸引力が有効に作用しなくなるとともに、濾過膜７を
透過した濾過処理水１１の流路がなり、濾過機能が低下
する。このため、濾過膜７の有効濾過面積が減少し、濾
過効率が低下する問題があった。Problems to be Solved by the Invention However, in the above-described conventional configuration, there was a problem that a certain portion of the filtration membrane 7 that is pressed against the membrane support 6 in the suction state does not perform the filtration function. That is, when the filtration membrane 7 comes into pressure contact with the membrane support 6 and there is no gap between them, the suction force no longer acts effectively on that part, and the flow path of the filtered water 11 that has passed through the filtration membrane 7 is blocked. and the filtration function decreases. For this reason, there was a problem that the effective filtration area of the filtration membrane 7 was reduced and the filtration efficiency was reduced.
また、濾過膜７に付着した汚泥を洗浄するために濾過膜
７に対して、水や空気を濾過処理水１１の透過方向と反
対方向に流通させる逆洗処理を施すと、濾過膜７そのも
のが破損したり、濾過膜７と膜支持体６との接合部が破
損したりする問題があった。In addition, when a backwash process is performed on the filtration membrane 7 in which water or air is passed in the opposite direction to the permeation direction of the filtered water 11 in order to wash the sludge attached to the filtration membrane 7, the filtration membrane 7 itself is There was a problem that the filter membrane 7 and the membrane support 6 were damaged or the joint between the filtration membrane 7 and the membrane support 6 was damaged.
本発明は上記課題を解決するもので、と・！過膜の有効
ａ・Ｒ過面積の減少を防止し、濾過効率の向上を図るこ
とができるとともに、逆洗処理を施すことができる活性
汚泥処理装置の膜モジュールを提供することを目的とす
る。The present invention solves the above problems and...! It is an object of the present invention to provide a membrane module for an activated sludge treatment apparatus that can prevent a decrease in the effective a/R filtration area of a filtration membrane, improve filtration efficiency, and perform backwashing treatment.
課題を解決するための手段
上記課題を解決するために本発明は、膜支持体に、一端
が膜支持体の表面に開口するとともに他端が濾過処理水
吸引管に連通ずる濾過処理水流路を形成し、この膜支持
体の表面を覆って配置される濾過膜を、膜支持体と濾過
膜の間に所定の間隙を形成する膜支持ネットを介在させ
て設け、濾過膜の外側部を覆って防護膜支持ネットを設
けた構成としたものである。Means for Solving the Problems In order to solve the above-mentioned problems, the present invention provides a membrane support with a filtered water channel having one end open to the surface of the membrane support and the other end communicating with a filtered water suction pipe. A filtration membrane is formed and disposed to cover the surface of the membrane support, and a membrane support net that forms a predetermined gap is interposed between the membrane support and the filtration membrane, and a membrane support net is provided to cover the outer part of the filtration membrane. The structure is such that a protective membrane support net is provided.
作用
上記した構成により、濾過処理水吸引管を通して濾過処
理水流路に吸引力を作用させ、濾過膜を介して濾過対象
物を吸引する。このとき、吸引力によって膜支持体の側
に付勢される濾過膜は、膜支持ネットを介して膜支持体
に保持されるので、膜支持体と濾過膜の間には常に所定
の間隙が膜支持ネットによって維持される。このため、
濾過膜と膜支持体の間に、濾過処理水流路に連通ずる空
間が濾過膜の全面にわたって形成され、濾過膜の全面に
吸引力が作用するので、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。Operation With the above-described configuration, a suction force is applied to the filtered water flow path through the filtered water suction pipe, and the object to be filtered is sucked through the filtration membrane. At this time, the filtration membrane, which is urged toward the membrane support by the suction force, is held on the membrane support via the membrane support net, so there is always a predetermined gap between the membrane support and the filtration membrane. maintained by a membrane support net. For this reason,
A space communicating with the filtered water flow path is formed between the filtration membrane and the membrane support over the entire surface of the filtration membrane, and a suction force is applied to the entire surface of the filtration membrane, thereby preventing a decrease in the effective filtration area of the filtration membrane. At the same time, the filtration efficiency is improved.
そして、濾過膜に付着した濾過物を剥離させるために逆
洗処理を施すときには、濾過膜に対して水もしくは空気
などの流体を濾過処理水の透過方向と反対方向に圧送す
る。このとき、濾過膜を背面側から表面側に向けて付勢
する流体の圧力に抗して、防護膜支持ネットが濾過膜を
受は止め、濾過膜の損傷が防止される。When backwashing is performed to remove filtrate adhering to the filtration membrane, a fluid such as water or air is pumped through the filtration membrane in a direction opposite to the permeation direction of the filtered water. At this time, the protective membrane support net receives and stops the filtration membrane against the pressure of the fluid that urges the filtration membrane from the back side toward the front side, thereby preventing damage to the filtration membrane.
実施例
以下本発明の一実施例を図面に基づいて説明する。第１
図〜第２図において、曝気槽２１の内部には濾過膜装置
２２と散気管２３が設けられている。そして、曝気槽２
１は、原水供給管２４から供給される原水２５の浄化処
理を行うものであり、底部に汚泥引抜ポンプ２６が汚泥
引抜管２７を介して接続されている。また、濾過膜装置
２２は、原水２５の消化処理により生じた消化処理水２
８の固液分離を行うものであり、上下両面が開放された
方形の箱枠２９の内部に複数個の膜モジュール３０が垂
直に一定間隔をおいて並列に設けられ、膜モジュール３
０は頂部を水没せしめて浸されている。そして、散気管
２３は、空気などの酸素を含有する曝気用気体３１を膜
モジュール３０の間に吹き込むものであり、濾過膜装置
２２の直下に配置され、給気管３２を介してブロワ−３
３に接続されているｉまた、膜モジュール３０は濾過処
理水吸引管３４を介して濾過処理水槽３５に連通してお
り、濾過処理水吸引管３４の途中には吸引ポンプ３Ｂが
介装されている。EXAMPLE An example of the present invention will be described below based on the drawings. 1st
In FIGS. 2 to 2, a filtration membrane device 22 and an aeration pipe 23 are provided inside the aeration tank 21. And aeration tank 2
1 is for purifying raw water 25 supplied from a raw water supply pipe 24, and a sludge drawing pump 26 is connected to the bottom via a sludge drawing pipe 27. In addition, the filtration membrane device 22 also includes digested water 2 generated by digesting the raw water 25.
8, a plurality of membrane modules 30 are vertically arranged in parallel at regular intervals inside a rectangular box frame 29 with both upper and lower sides open.
0 is immersed with the top submerged in water. The aeration pipe 23 is for blowing an aeration gas 31 containing oxygen, such as air, between the membrane modules 30, and is arranged directly under the filtration membrane device 22, and is connected to the blower 3 through the air supply pipe 32.
In addition, the membrane module 30 is connected to a filtered water tank 35 via a filtered water suction pipe 34, and a suction pump 3B is interposed in the middle of the filtered water suction pipe 34. There is.
そして、第２図に示すように、膜モジュール３０は膜支
持体３７と膜支持ネット３８と濾過膜３９と防護膜支持
ネット４０とで形成されている。すなわち、樹脂材より
なる膜支持体３７には濾過処理水流路４１が形成されて
おり、濾過処理水流路４１は一端が膜支持体３７の表面
に開口するとともに、他端が濾過処理水吸引管３４に連
通している。そして、膜支持体３７を覆って濾過膜３９
が設けられており、ｌａ過膜３９は周縁部を膜支持体３
７に接着剤で固着されている。また、膜支持体３７と濾
過膜３９の間には膜支持ネット３８が介在されており、
膜支持ネット３８は膜支持体３７と濾過膜３９の間に所
定の間隙を形成している。さらに、防護膜支持ネット４
０が濾過膜３９を覆って設けられており、防護膜支持ネ
ット４０は袋状をなして開口周縁部が膜支持体３７に固
着されている。また、防護膜支持ネット４０は１〜１０
１Ｉｆｆ＋の目幅に形成されている。As shown in FIG. 2, the membrane module 30 is formed of a membrane support 37, a membrane support net 38, a filtration membrane 39, and a protective membrane support net 40. That is, a filtered water flow path 41 is formed in the membrane support 37 made of a resin material, and one end of the filtered water flow path 41 opens to the surface of the membrane support 37, and the other end is a filtered water suction pipe. It is connected to 34. Then, the membrane support 37 is covered and the filtration membrane 39 is
is provided, and the peripheral part of the la membrane 39 is attached to the membrane support 3.
7 is fixed with adhesive. Further, a membrane support net 38 is interposed between the membrane support 37 and the filtration membrane 39,
The membrane support net 38 forms a predetermined gap between the membrane support 37 and the filter membrane 39. Furthermore, the protective membrane support net 4
0 is provided to cover the filter membrane 39 , and the protective membrane support net 40 is shaped like a bag and the opening peripheral edge is fixed to the membrane support 37 . Moreover, the protective film support net 40 is 1 to 10
It is formed to have an eye width of 1Iff+.
そして、濾過膜３９の逆洗処理を施す構成として、逆洗
管４２が三方切り換え弁４３を介して濾過処理水吸引管
３４に吸引ポンプ３Ｂよりも上流側で連通して設けられ
ており、逆洗管４２には逆洗ポンプ４４が介装されてい
る。As a configuration for backwashing the filtration membrane 39, a backwash pipe 42 is provided to communicate with the filtered water suction pipe 34 via a three-way switching valve 43 on the upstream side of the suction pump 3B. A backwash pump 44 is interposed in the wash pipe 42 .
以下、上記構成における作用について説明する。Hereinafter, the effects of the above configuration will be explained.
原水供給管２４から曝気槽２１内に送られた原水２５は
、ブロワ−３３から給気管３２および散気管２３を経て
膜モジュール３０の間に吹き出される曝気用気体３１に
より曝気され、浄化処理されて浄化処理水２８となる。The raw water 25 sent from the raw water supply pipe 24 into the aeration tank 21 is aerated and purified by the aeration gas 31 blown out between the membrane modules 30 from the blower 33 via the air supply pipe 32 and the aeration pipe 23. This becomes purified water 28.
そして、膜モジュール３０の濾過処理水流路４１内が濾
過処理水吸引管３４を通して吸引ポンプ３６により吸引
力を受けることによって、浄化処理水２８が４ａ過膜３
９で固液分離され、濾過膜３９を透過した清浄な濾過処
理水４５が濾過処理水流路４１から濾過処理水吸引管３
４を通って濾過処理水槽３５に送られる。このとき、吸
引力によって膜支持体３７の側に付勢される濾過膜３９
は、膜支持ネット３８を介して膜支持体３７に保持され
るので、膜支持体３７とａａ過１１ｉ３９の間には常に
所定の間隙が膜支持ネット３８によって維持される。こ
のため、濾過膜３９と膜支持体３７の間に、濾過処理水
流路４Ｉに連通ずる空間が濾過膜３９の全面にわたって
形成され、濾過膜３９の全面に吸引力が作用するので、
濾過膜３９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。Then, the filtered water flow path 41 of the membrane module 30 receives a suction force from the suction pump 36 through the filtered water suction pipe 34, so that the purified water 28 is transferred to the 4a filtration membrane 3.
9, the clean filtered water 45 that has passed through the filtration membrane 39 is transferred from the filtered water flow path 41 to the filtered water suction pipe 3.
4 and is sent to the filtration treatment water tank 35. At this time, the filtration membrane 39 is urged toward the membrane support 37 by the suction force.
is held on the membrane support 37 via the membrane support net 38, so that a predetermined gap is always maintained between the membrane support 37 and the aa 11i39 by the membrane support net 38. Therefore, a space communicating with the filtered water flow path 4I is formed between the filtration membrane 39 and the membrane support 37 over the entire surface of the filtration membrane 39, and a suction force acts on the entire surface of the filtration membrane 39.
A decrease in the effective filtration area of the filtration membrane 39 is prevented, and the filtration efficiency is improved.
そして、膜モジュール３０の間を上昇する曝気用気体３
１は、その気泡のエアリフト作用により膜モジュール３
０の間に上昇流を生じさせ、この上昇流が濾過膜３９の
膜面に付着された濾過物である汚泥を膜面から離脱させ
ることにより、濾過膜３９の目詰まりが防止される。Then, the aeration gas 3 rising between the membrane modules 30
1 is a membrane module 3 due to the air lift effect of the bubbles.
Clogging of the filtration membrane 39 is prevented by generating an upward flow during the zero period and causing sludge, which is a filtrate attached to the membrane surface of the filtration membrane 39, to separate from the membrane surface.
また、所定期間ごとに濾過膜３９に逆洗処理を施すとき
には、三方切り換え弁４３を操作して逆洗管４２から水
または空気などの逆洗用流体を濾過処理水吸引管３４に
逆洗ポンプ４４で圧送し、濾過膜３９に対して逆洗用流
体を濾過処理水４５の透過方向と反対方向に流通させて
濾過膜３Ｂに付着した汚泥を剥離させる。このとき、濾
過膜３９を背面側から表面側に向けて付勢する逆洗用流
体の圧力に抗して、防護膜支持ネット４０が濾過Ｂ３９
を受は止め、濾過膜３９の損傷が防止される。When backwashing the filtration membrane 39 at predetermined intervals, the three-way switching valve 43 is operated to transfer a backwashing fluid such as water or air from the backwash pipe 42 to the filtered water suction pipe 34 using the backwash pump. 44, and the backwashing fluid is passed through the filtration membrane 39 in a direction opposite to the permeation direction of the filtered water 45, thereby peeling off the sludge adhering to the filtration membrane 3B. At this time, the protective membrane support net 40 resists the pressure of the backwashing fluid that urges the filtration membrane 39 from the back side toward the front side, and the protective membrane support net 40
This prevents damage to the filter membrane 39.
また、防護膜支持ネット４０は目幅が小さいほど逆洗に
対する抵抗力を有するが、消化処理水２８中の汚泥の濃
度が高くなると防護膜支持ネッ）４０そのものに汚泥が
堆積し、逆洗処理を行う頻度を多くしないと膜モジュー
ル３０としてのフラックスが減少してしまう。また、目
幅を大きくするとフラックスの低下は少なくなるが、逆
洗に対する防護膜支持ネッ）４０の抵抗力が低下する。Furthermore, the smaller the mesh width of the protective membrane support net 40, the more it resists backwashing, but when the concentration of sludge in the digested water 28 increases, sludge accumulates on the protective membrane support net 40 itself, and the backwashing process If this is not done more frequently, the flux for the membrane module 30 will decrease. Furthermore, if the mesh width is increased, the decrease in flux will be reduced, but the resistance of the protective membrane support net 40 to backwashing will be reduced.
ここで第１表に、防護膜支持ネット４０の目幅と膜モジ
ュール３０としてのフラックスとの関係を示す。Here, Table 1 shows the relationship between the mesh width of the protective membrane support net 40 and the flux used as the membrane module 30.
第１表
第１表からあきらかなように、本実施例のように目幅を
１〜１０ｍ＋１とすることにより最も効率の良い防護膜
支持ネット４０を形成することができる。As is clear from Table 1, the most efficient protective film support net 40 can be formed by setting the mesh width to 1 to 10 m+1 as in this example.
発明の効果
以上述べたように本発明によれば、濾過膜と膜支持体の
間に、濾過処理水流路に連通ずる空間が膜支持ネットに
よって濾過膜の全面にわたって形成されるので、濾過膜
の全面に吸引力が作用し、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。Effects of the Invention As described above, according to the present invention, a space communicating with the filtered water flow path is formed between the filtration membrane and the membrane support over the entire surface of the filtration membrane by the membrane support net. Suction force acts on the entire surface, preventing a decrease in the effective filtration area of the filtration membrane and improving filtration efficiency.
また、逆洗処理を施すときには、濾過膜を背面側から表
面側に向けて付勢する流体の圧力に抗して、防護膜支持
ネットで濾過膜を受は止めることにより、濾過膜の損傷
を防止することができる。In addition, when backwashing is performed, damage to the filtration membrane is prevented by blocking the filtration membrane with a protective membrane support net against the pressure of the fluid that urges the filtration membrane from the back side toward the front side. It can be prevented.
第１図は本発明の一実施例を示す全体構成図、第２図は
同実施例の膜モジュールの全体断面図、第３図は従来の
活性汚泥処理装置の全体構成図である。
２１・・・曝気格、２２・・・濾過膜装置、２５・・・
原水、３０・・・膜モジュール、３４・・・濾過処理水
吸引管、３７・・・膜支持体、３８・・・膜支持ネット
、３９・・・濾過膜、４０・・・防護膜支持ネッ）、４
１・・・濾過処理水流路。FIG. 1 is an overall configuration diagram showing one embodiment of the present invention, FIG. 2 is an overall sectional view of a membrane module of the same embodiment, and FIG. 3 is an overall configuration diagram of a conventional activated sludge treatment apparatus. 21... Aeration grade, 22... Filtration membrane device, 25...
Raw water, 30... Membrane module, 34... Filtered water suction pipe, 37... Membrane support, 38... Membrane support net, 39... Filtration membrane, 40... Protective membrane support net ), 4
1...Filtered water flow path.
Claims (1)
もに他端が濾過処理水吸引管に連通する濾過処理水流路
を形成し、この膜支持体の表面を覆って配置される濾過
膜を、膜支持体と濾過膜の間に所定の間隙を形成する膜
支持ネットを介在させて設け、濾過膜の外側部を覆って
防護膜支持ネットを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 filtration system in which a filtered water flow path is formed in the membrane support, one end of which opens onto the surface of the membrane support and the other end communicates with the filtered water suction pipe, and is placed over the surface of the membrane support. An activated sludge treatment characterized in that a membrane is provided with a membrane support net interposed therebetween that forms a predetermined gap between the membrane support and the filtration membrane, and a protective membrane support net is provided covering the outer side of the filtration membrane. Membrane module of the device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1137258A JPH034984A (en) | 1989-05-29 | 1989-05-29 | Membrane module for activated sludge treating apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1137258A JPH034984A (en) | 1989-05-29 | 1989-05-29 | Membrane module for activated sludge treating apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH034984A true JPH034984A (en) | 1991-01-10 |
Family
ID=15194463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1137258A Pending JPH034984A (en) | 1989-05-29 | 1989-05-29 | Membrane module for activated sludge treating apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH034984A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04290592A (en) * | 1991-03-19 | 1992-10-15 | Ebara Infilco Co Ltd | Method and device for biological treatment integrated with solid-liquid separator |
| KR20010079207A (en) * | 2001-06-22 | 2001-08-22 | 안상철 | Brush brush with integrated brush head fixing part (and handle part) and handle (hand part). |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6372306A (en) * | 1986-09-17 | 1988-04-02 | Fuji Photo Film Co Ltd | Filter cartridge |
-
1989
- 1989-05-29 JP JP1137258A patent/JPH034984A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6372306A (en) * | 1986-09-17 | 1988-04-02 | Fuji Photo Film Co Ltd | Filter cartridge |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04290592A (en) * | 1991-03-19 | 1992-10-15 | Ebara Infilco Co Ltd | Method and device for biological treatment integrated with solid-liquid separator |
| KR20010079207A (en) * | 2001-06-22 | 2001-08-22 | 안상철 | Brush brush with integrated brush head fixing part (and handle part) and handle (hand part). |
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