JP3023928B2 - Solid-liquid separator - Google Patents
Solid-liquid separatorInfo
- Publication number
- JP3023928B2 JP3023928B2 JP3040334A JP4033491A JP3023928B2 JP 3023928 B2 JP3023928 B2 JP 3023928B2 JP 3040334 A JP3040334 A JP 3040334A JP 4033491 A JP4033491 A JP 4033491A JP 3023928 B2 JP3023928 B2 JP 3023928B2
- Authority
- JP
- Japan
- Prior art keywords
- filtration membrane
- solid
- raw water
- gap
- cake
- 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.)
- Expired - Lifetime
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
- Separation Using Semi-Permeable Membranes (AREA)
- Activated Sludge Processes (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、水処理施設において原
水中の微粒物質をろ過膜を用いて分離する固液分離装置
に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a solid-liquid separation apparatus for separating fine particulate matter in raw water using a filtration membrane in a water treatment facility.
【０００２】[0002]
【従来の技術】従来、水処理施設においては原水中に含
まれる微粒物質や活性汚泥を分離除去するために、ろ過
膜を備えた固液分離装置を用いており、従来の固液分離
装置は、たとえば図３〜図４に示すようなものであっ
た。図３〜図４において、固液分離装置１は架台２の上
部にろ過膜モジュール３を有しており、ろ過膜モジュー
ル３の下方には散気管４と攪拌器５が設けられている。
そして、ろ過膜モジュール３は複数のろ過膜エレメント
６を平行に配列し、ステーボルト７で連結固定されてい
る。また、各ろ過膜エレメント６の間には所定の間隙を
形成するために、スペーサー８が介装されている。2. Description of the Related Art Conventionally, in a water treatment facility, a solid-liquid separator equipped with a filtration membrane has been used to separate and remove fine particles and activated sludge contained in raw water. For example, as shown in FIGS. In FIGS. 3 and 4, the solid-liquid separation device 1 has a filtration membrane module 3 above a gantry 2, and an air diffuser 4 and a stirrer 5 are provided below the filtration membrane module 3.
The filtration membrane module 3 has a plurality of filtration membrane elements 6 arranged in parallel and connected and fixed by stay bolts 7. A spacer 8 is interposed between each filtration membrane element 6 in order to form a predetermined gap.
【０００３】そして、ろ過膜エレメント６はろ板９の表
裏をろ過膜１０で覆って形成されており、各ろ過膜エレ
メント６は透過液ホース１１を介して吸引管１２に接続
されている。[0003] The filtration membrane element 6 is formed by covering the front and back of a filter plate 9 with a filtration membrane 10, and each filtration membrane element 6 is connected to a suction pipe 12 via a permeate hose 11.
【０００４】このような構成において、原水は攪拌器５
による攪拌作用を受けるとともに、散気管４から噴出す
る空気のエアーリフト作用によって上向流となってろ過
膜モジュール３の各間隙１３に流入する。また、各ろ過
膜エレント６は吸引管１２を通して受ける負圧によりろ
過膜１０を通して原水を吸引する。In such a configuration, the raw water is supplied to the stirrer 5.
, And flows upward into each gap 13 of the filtration membrane module 3 as an upward flow due to the air lift effect of the air ejected from the air diffuser 4. Each filtration membrane element 6 sucks raw water through the filtration membrane 10 by the negative pressure received through the suction pipe 12.
【０００５】そして、原水中の微粒物質はろ過膜１０に
透過を阻止されてろ過膜１０の表面に堆積し、ろ過膜１
０を透過した透過液は透過液ホース１１を通って吸引管
１２から取り出される。さらに、ろ過膜１０の表面に堆
積したケーキは原水の上昇攪拌流によって膜面から剥離
される。[0005] The fine particulate matter in the raw water is blocked by the filtration membrane 10 and is deposited on the surface of the filtration membrane 10, and the filtration membrane 1
The permeated liquid that has passed through 0 is taken out of the suction tube 12 through the permeated liquid hose 11. Further, the cake deposited on the surface of the filtration membrane 10 is separated from the membrane surface by the upward stirring flow of the raw water.
【０００６】[0006]
【発明が解決しようとする課題】しかし、上記した従来
の構成によれば、隣接するろ過膜エレメント６の間隙が
狭すぎると膜間にケーキが詰まって部分的な流路閉塞を
生じる問題があった。また、広すぎると上昇攪拌流やポ
ンプ流速によって膜面のケーキに与えるせん断力が弱め
られて洗浄効果が薄れるので、流速を速めるためのにエ
ネルギーが多く必要となり、ランニングコストが高くな
る問題があった。However, according to the above-mentioned conventional construction, if the gap between the adjacent filtration membrane elements 6 is too small, there is a problem that cake is clogged between the membranes and a partial blockage of the flow passage occurs. Was. On the other hand, if the width is too wide, the shearing force applied to the cake on the membrane surface is weakened by the rising agitation flow and the pump flow rate, and the washing effect is weakened. Was.
【０００７】さらに、各ろ過膜エレメント６をステーボ
ルト７で固定しているために、一部のろ過膜エレメント
６が損傷したときにもろ過膜モジュール３を分解する必
要があり、メンテナンスに手間を要する問題があった。Further, since each of the filtration membrane elements 6 is fixed with the stay bolt 7, it is necessary to disassemble the filtration membrane module 3 even when some of the filtration membrane elements 6 are damaged. There was a problem.
【０００８】本発明は上記課題を解決するもので、膜面
洗浄を効率的に行うことができるとともに、メンテナン
ス時にろ過膜エレメントを容易に取り出すことができる
固液分離装置を提供することを目的とする。An object of the present invention is to solve the above-mentioned problems, and an object of the present invention is to provide a solid-liquid separation device capable of efficiently cleaning a membrane surface and easily removing a filtration membrane element during maintenance. I do.
【０００９】[0009]
【課題を解決するための手段】上記課題を解決するため
に本発明の、水処理施設において原水中に含まれる微粒
物質および活性汚泥を分離除去する固液分離装置は、板
状の剛体をなすろ板の表面をろ過膜で覆ってろ過膜エレ
メントを形成し、複数のろ過膜エレメントを一体に保持
して収納する枠体に、ろ過膜エレメントのそれぞれを個
々別々に鉛直方向の姿勢で６〜１０ミリの所定間隙をあ
けて平行に配列する方向に挿入する複数の案内溝を形成
し、複数のろ過膜エレメントの下方に散気手段を配置し
たものである。Means for Solving the Problems In order to solve the above-mentioned problems, fine particles contained in raw water in a water treatment facility according to the present invention.
The solid-liquid separation device that separates and removes substances and activated sludge
Cover the surface of the filter plate forming a rigid body with a filtration membrane
To hold multiple filtration membrane elements together
Each of the filtration membrane elements in the frame
A predetermined gap of 6 to 10 mm is separately set in a vertical position.
Forming multiple guide grooves to be inserted in parallel
And a diffuser is placed below the multiple filtration membrane elements.
It is a thing.
【００１０】[0010]
【００１１】[0011]
【作用】上記構成により、枠体の各案内溝にろ過膜エレ
メントを挿入配置することにより、複数のろ過膜エレメ
ントが枠体によって一体に保持される。したがって、ろ
過膜エレメントのメンテナンス時にはろ過膜モジュール
を解体することなく、複数のろ過膜エレメントの中から
任意のろ過膜エレメントだけを枠体から抜き出して取り
外すことができる。With the above arrangement, a plurality of filtration membrane elements are integrally held by the frame by inserting and disposing the filtration membrane elements in the respective guide grooves of the frame. Therefore, during maintenance of the filtration membrane element, only an arbitrary filtration membrane element can be extracted from the frame and removed from the frame without dismantling the filtration membrane module.
【００１２】また、平行に配置されたろ過膜エレメント
の隣接する膜面の間隙を６〜１０ミリに設定することに
より、間隙によって形成される膜面間の流路がケーキで
閉塞されることがなく、また膜面間の流路を流れる上向
流の流速および曝気がせん断力として膜面に付着するケ
ーキに有効に作用し、膜面洗浄に要するエネルギーを抑
制することができる。Further, by setting the gap between the adjacent membrane surfaces of the filtration membrane elements arranged in parallel to 6 to 10 mm, the flow path between the membrane surfaces formed by the gap may be blocked by cake. In addition, the upward flow velocity and aeration flowing through the flow path between the membrane surfaces effectively act as a shearing force on the cake adhering to the membrane surface, and the energy required for membrane cleaning can be suppressed.
【００１３】[0013]
【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。固液分離装置の全体構成は図４に示したものと
同様であり、同様の作用を行う部材については同一番号
を付して説明を省略する。図１〜図２において、ろ過膜
モジュール３のろ過膜エレメント２１はろ板２２の表裏
をろ過膜２３で覆って形成されており、ろ板２２にはろ
板２２の表裏面に開口する透過液流路２４が形成されて
いる。An embodiment of the present invention will be described below with reference to the drawings. The overall configuration of the solid-liquid separation device is the same as that shown in FIG. 4, and the members that perform the same operations are denoted by the same reference numerals and description thereof is omitted. 1 and 2, the filtration membrane element 21 of the filtration membrane module 3 is formed by covering the front and back of a filter plate 22 with a filtration membrane 23. 24 are formed.
【００１４】そして、複数のろ過膜エレメント２１を一
体に保持するための枠体２５の内側面には、ろ過膜エレ
メント２１を挿入するための案内溝２６がろ過膜エレメ
ント２１を平行に配列する方向に沿って所定間隙αをあ
けて形成されており、各ろ過膜エレメント２１は各案内
溝２６に保持されている。さらに、所定間隙αは６〜１
０ミリに設定されている。A guide groove 26 for inserting the filtration membrane element 21 is provided on the inner surface of the frame 25 for holding the plurality of filtration membrane elements 21 in a direction in which the filtration membrane elements 21 are arranged in parallel. Are formed with a predetermined gap α along the line, and each filtration membrane element 21 is held in each guide groove 26. Further, the predetermined gap α is 6 to 1
It is set to 0 mm.
【００１５】以下、上記構成における作用を説明する。
原水は攪拌器５による攪拌作用を受けるとともに、散気
管４から噴出する空気のエアーリフト作用によって上向
流となってろ過膜モジュール３の各間隙αに流入する。
また、各ろ過膜エレント２３は吸引管１２を通して受け
る負圧によりろ過膜２３を通して原水を吸引する。The operation of the above configuration will be described below.
The raw water is stirred by the stirrer 5 and flows upward into each gap α of the filtration membrane module 3 as an upward flow due to the air lift effect of the air ejected from the air diffuser 4.
Further, each filtration membrane element 23 sucks raw water through the filtration membrane 23 by a negative pressure received through the suction pipe 12.
【００１６】そして、原水中の微粒物質はろ過膜２３に
透過を阻止されてろ過膜２３の表面にケーキ状に堆積
し、ろ過膜２３を透過した透過液は透過液流路２４およ
び透過液ホース１１を通って吸引管１２から取り出され
る。さらに、ろ過膜２３の表面に堆積したケーキは原水
の上昇攪拌流によって膜面から剥離される。Then, the fine particles in the raw water are blocked by the filtration membrane 23 and are deposited in a cake on the surface of the filtration membrane 23. It is taken out of the suction tube 12 through 11. Further, the cake deposited on the surface of the filtration membrane 23 is separated from the membrane surface by the upward stirring flow of the raw water.
【００１７】このとき、平行に配置されたろ過膜エレメ
ント２３の隣接する膜面の間隙αを８ミリ以下に設定す
ると、間隙αによって形成される流路が狭くなり過ぎて
膜面上に成長するケーキ層および剥離されたケーキが詰
まることによって流路閉塞が生じる。また、間隙αを１
０ミリ以上に設定すると上向流の流速や曝気によってケ
ーキ層に与えるせん断力の効果が弱められる。At this time, if the gap α between the adjacent membrane surfaces of the filtration membrane elements 23 arranged in parallel is set to 8 mm or less, the flow path formed by the gap α becomes too narrow and grows on the membrane surface. The clogging of the cake layer and the peeled cake causes flow path blockage. Also, if the gap α
When the distance is set to 0 mm or more, the effect of the shearing force on the cake layer due to the upward flow velocity and aeration is reduced.
【００１８】したがって、間隙αを６〜１０ミリに設定
することにより、間隙αによって形成される膜面間の流
路がケーキで閉塞されることがなく、また膜面間の流路
を流れる上向流の流速および曝気がせん断力としてケー
キ層に有効に作用し、膜面洗浄に要するエネルギーを抑
制することができる。Therefore, by setting the gap α to 6 to 10 mm, the flow path between the membrane surfaces formed by the gap α is not blocked by the cake, and the flow rate between the membrane surfaces is reduced. The countercurrent flow rate and aeration effectively act on the cake layer as a shear force, and the energy required for membrane surface cleaning can be suppressed.
【００１９】そして、枠体２５の各案内溝２６にろ過膜
エレメント２１を挿入配置することによって複数のろ過
膜エレメント２１が枠体２５に一体に保持されているの
で、ろ過膜エレメント２１のメンテナンス時には、該当
するろ過膜エレメント２１を除く他のろ過膜エレメント
２１が枠体２５に保持された状態において、そのろ過膜
エレメント２１だけを枠体２５から抜き出して取り外す
ことができる。Since the plurality of filtration membrane elements 21 are integrally held by the frame 25 by inserting and arranging the filtration membrane elements 21 in the respective guide grooves 26 of the frame 25, during maintenance of the filtration membrane element 21, In a state where the other filtration membrane elements 21 except the corresponding filtration membrane element 21 are held by the frame 25, only the filtration membrane element 21 can be pulled out from the frame 25 and removed.
【００２０】[0020]
【発明の効果】以上述べたように本発明によれば、枠体
の各案内溝にろ過膜エレメントを挿入配置することによ
り、ろ過膜モジュールを解体することなく任意のろ過膜
エレメントだけを枠体から抜き出して取り外すことがで
きる。As described above, according to the present invention, by inserting and arranging a filtration membrane element in each guide groove of the frame, only an arbitrary filtration membrane element can be inserted into the frame without dismantling the filtration membrane module. It can be pulled out and removed.
【００２１】また、隣接する膜面の間隙を６〜１０ミリ
に設定することにより、ケーキによる膜面間の流路の閉
塞を防止することができ、膜面間の流路を流れる上向流
の流速および曝気をせん断力としてケーキ層に有効に作
用させることができ、膜面洗浄に要するエネルギーを抑
制することができる。Further, by setting the gap between the adjacent membrane surfaces to 6 to 10 mm, it is possible to prevent the flow path between the membrane surfaces from being blocked by the cake, and the upward flow flowing through the flow path between the membrane surfaces can be prevented. The flow rate and the aeration can effectively act on the cake layer as a shearing force, and the energy required for cleaning the film surface can be suppressed.
【図１】本発明の一実施例におけるろ過膜エレメントの
配置構成を示す平面図である。FIG. 1 is a plan view showing an arrangement configuration of a filtration membrane element in one embodiment of the present invention.
【図２】同実施例におけるろ過膜エレメントの断面図で
ある。FIG. 2 is a cross-sectional view of the filtration membrane element in the embodiment.
【図３】従来のろ過膜エレメントの配置構成を示す平面
図である。FIG. 3 is a plan view showing an arrangement configuration of a conventional filtration membrane element.
【図４】固液分離装置の全体構成を示す正面図である。FIG. 4 is a front view showing the entire configuration of the solid-liquid separation device.
２１ ろ過膜エレメント ２２ ろ板 ２３ ろ過膜 ２５ 枠体 ２６ 案内溝 DESCRIPTION OF SYMBOLS 21 Filtration membrane element 22 Filter plate 23 Filtration membrane 25 Frame 26 Guide groove
フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) B01D 63/08 B01D 65/08 Continuation of the front page (58) Field surveyed (Int.Cl. 7 , DB name) B01D 63/08 B01D 65/08
Claims (1)
粒物質および活性汚泥を分離除去する装置であって、板
状の剛体をなすろ板の表面をろ過膜で覆ってろ過膜エレ
メントを形成し、複数のろ過膜エレメントを一体に保持
して収納する枠体に、ろ過膜エレメントのそれぞれを個
々別々に鉛直方向の姿勢で６〜１０ミリの所定間隙をあ
けて平行に配列する方向に挿入する複数の案内溝を形成
し、複数のろ過膜エレメントの下方に散気手段を配置し
たことを特徴とする固液分離装置。1. A device for separating and removing particulate matter and activated sludge contained in the raw water in water treatment facilities, the plate
Cover the surface of the filter plate forming a rigid body with a filtration membrane
To hold multiple filtration membrane elements together
The frame body to accommodated, Oh predetermined gap 6-10 millimeters each individual separately vertical orientation of the filtration membrane element
Forming multiple guide grooves to be inserted in parallel
And a diffuser is placed below the multiple filtration membrane elements.
A solid-liquid separation device.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3040334A JP3023928B2 (en) | 1991-03-07 | 1991-03-07 | Solid-liquid separator |
| DK92103240T DK0510328T3 (en) | 1991-03-07 | 1992-02-26 | Apparatus for treating activated sludge |
| EP19920103240 EP0510328B1 (en) | 1991-03-07 | 1992-02-26 | Apparatus for treating activated sludge |
| DE69205198T DE69205198T2 (en) | 1991-03-07 | 1992-02-26 | Device for treating activated sludge. |
| US07/846,130 US5192456A (en) | 1991-03-07 | 1992-03-04 | Apparatus for treating activated sludge and method of cleaning it |
| GR950403155T GR3018058T3 (en) | 1991-03-07 | 1995-11-10 | Apparatus for treating activated sludge. |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3040334A JP3023928B2 (en) | 1991-03-07 | 1991-03-07 | Solid-liquid separator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH04281828A JPH04281828A (en) | 1992-10-07 |
| JP3023928B2 true JP3023928B2 (en) | 2000-03-21 |
Family
ID=12577728
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3040334A Expired - Lifetime JP3023928B2 (en) | 1991-03-07 | 1991-03-07 | Solid-liquid separator |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3023928B2 (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0720592B2 (en) * | 1988-09-22 | 1995-03-08 | 株式会社クボタ | Activated sludge treatment equipment |
-
1991
- 1991-03-07 JP JP3040334A patent/JP3023928B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH04281828A (en) | 1992-10-07 |
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