JPH0557158A - Washing method for filter membrane element - Google Patents
Washing method for filter membrane elementInfo
- Publication number
- JPH0557158A JPH0557158A JP3219066A JP21906691A JPH0557158A JP H0557158 A JPH0557158 A JP H0557158A JP 3219066 A JP3219066 A JP 3219066A JP 21906691 A JP21906691 A JP 21906691A JP H0557158 A JPH0557158 A JP H0557158A
- Authority
- JP
- Japan
- Prior art keywords
- filtration membrane
- membrane element
- filter membrane
- elements
- guide groove
- 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
- Separation Using Semi-Permeable Membranes (AREA)
- Activated Sludge Processes (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、曝気槽などに浸漬して
活性汚泥と処理水を分離する膜分離装置のろ過膜エレメ
ントを洗浄する洗浄方法に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cleaning method for cleaning a filtration membrane element of a membrane separation device which is immersed in an aeration tank or the like to separate activated sludge and treated water.
【０００２】[0002]
【従来の技術】曝気槽などに浸漬して活性汚泥と処理水
を分離する膜分離装置のろ過膜エレメントは、使用の経
過につれ膜面にケーキ層が形成され、この結果ろ過抵抗
が増大し、ついにはＦｌｕｘ（膜透過流束m3／m2／日）
が低下する。このため、一定期間（通常、３〜４ヵ月）
毎にろ過膜エレメントを引き出し、機械、または人手に
よって洗浄を行なう必要がある。従来、このろ過膜エレ
メントの洗浄は、ろ過膜ユニットに形成された案内溝か
らろ過膜エレメントを一枚ずつ曝気槽外に抜き出して洗
浄を行なっていた。2. Description of the Related Art A filtration membrane element of a membrane separation device that separates activated sludge from treated water by immersing it in an aeration tank or the like forms a cake layer on the membrane surface as it is used, resulting in an increase in filtration resistance. Finally, Flux (membrane permeation flux m 3 / m 2 / day)
Is reduced. For this reason, a fixed period (usually 3-4 months)
Each time, it is necessary to pull out the filtration membrane element and wash it mechanically or manually. Conventionally, in order to clean the filtration membrane element, one filtration membrane element is extracted from the guide groove formed in the filtration membrane unit to the outside of the aeration tank for cleaning.
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、前記従
来の洗浄方法では、ろ過膜エレメントをろ過膜ユニット
から一枚ずつ抜き出して曝気槽外に運び出して洗浄しな
ければならないため、ろ過膜エレメントの洗浄に非常に
時間と人手がかかるという問題点があった。しかも、ろ
過膜エレメントを曝気槽外に運ぶ際にろ過膜を傷めるお
それがあった。However, in the above-mentioned conventional cleaning method, it is necessary to extract the filtration membrane elements one by one from the filtration membrane unit and carry them out of the aeration tank for cleaning. There was a problem that it took a lot of time and labor. Moreover, the filter membrane may be damaged when the filter membrane element is carried out of the aeration tank.
【０００４】本発明は、このような従来の問題点を解決
するためになされたもので、ろ過膜エレメントを一度に
複数枚洗浄でき、しかも、ろ過膜エレメントのろ過膜を
傷めるおそれのないろ過膜エレメントの洗浄方法を提供
することを目的としている。The present invention has been made in order to solve such a conventional problem, and it is possible to wash a plurality of filtration membrane elements at a time, and further, there is no fear of damaging the filtration membrane of the filtration membrane element. It is intended to provide a method for cleaning an element.
【０００５】[0005]
【課題を解決するための手段】本発明のろ過膜エレメン
トの洗浄方法は、複数のろ過膜エレメントを有するろ過
膜ユニットを備えた膜分離装置において、ろ過膜エレメ
ントをろ過膜ユニットの案内溝に沿って引き上げ、ろ過
膜エレメントの下端が案内溝に嵌まった状態でろ過膜エ
レメントの引き上げを停止し、ろ過膜エレメントの上端
を吊具支持棒に懸下支持し、この引き上げられたろ過膜
エレメントを洗浄する。According to the method for cleaning a filtration membrane element of the present invention, in a membrane separation device provided with a filtration membrane unit having a plurality of filtration membrane elements, the filtration membrane element is guided along a guide groove of the filtration membrane unit. The filter membrane element is stopped from being pulled up with the lower end of the filter membrane element fitted in the guide groove, and the upper end of the filter membrane element is suspended and supported by the hanger support rod. Wash.
【０００６】[0006]
【作用】上記構成において、ろ過膜エレメントの下端が
案内溝に嵌まった状態でろ過膜エレメントの引き上げを
停止し、ろ過膜エレメントの上端を吊具支持棒に懸下支
持することによって、ろ過膜エレメントが固定されぶら
ぶらしないために一度に複数のろ過膜エレメントの洗浄
が容易にできる。In the above structure, with the lower end of the filtration membrane element fitted in the guide groove, the lifting of the filtration membrane element is stopped, and the upper end of the filtration membrane element is suspended and supported by the hanger support rod. Since the element is fixed and does not dangle, it is possible to easily wash a plurality of filtration membrane elements at once.
【０００７】[0007]
【実施例】以下に本発明の一実施例について、図面を参
照しながら説明する。図１は、本発明の一実施例に用い
る膜分離装置のろ過膜ユニットの斜視図である。この図
において、１は、膜分離装置の吸引管や吸引装置などを
省略したろ過膜ユニットであって、このろ過膜ユニット
１の両側内周壁に案内溝２が上下方向に平行に形成さ
れ、この案内溝２にろ過膜エレメント３が複数個嵌め込
まれている。ろ過膜エレメント３の上部両端部には、ろ
過膜エレメント３を吊り上げるための２個のフック４が
設けられている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings. FIG. 1 is a perspective view of a filtration membrane unit of a membrane separation device used in one embodiment of the present invention. In this figure, reference numeral 1 denotes a filtration membrane unit in which a suction pipe and a suction device of the membrane separation device are omitted, and guide grooves 2 are formed on both inner peripheral walls of the filtration membrane unit 1 in parallel in the vertical direction. A plurality of filtration membrane elements 3 are fitted in the guide grooves 2. Two hooks 4 for lifting the filtration membrane element 3 are provided at both upper ends of the filtration membrane element 3.
【０００８】このろ過膜ユニット１は、図２から図４に
示すように曝気槽５に浸漬されている。曝気槽５の上部
には作業室６が備えられ、この作業室６の内壁の上部に
吊具支持棒７が掛け渡たされて設けられている。この吊
具支持棒７に適当な間隔でフック８が取り付けられて、
ろ過膜エレメント３の案内溝２から引き上げられたろ過
膜エレメント３がフック８に吊り下げられるよう構成さ
れている。９は、曝気槽５内の攪拌装置である。The filtration membrane unit 1 is immersed in an aeration tank 5 as shown in FIGS. A work chamber 6 is provided on the upper part of the aeration tank 5, and a lifting tool support rod 7 is provided so as to extend over the inner wall of the work chamber 6. The hooks 8 are attached to the hanging tool support rods 7 at appropriate intervals,
The filtration membrane element 3 pulled up from the guide groove 2 of the filtration membrane element 3 is configured to be suspended by the hook 8. 9 is a stirring device in the aeration tank 5.
【０００９】つぎに、ろ過膜エレメントの洗浄方法を説
明する。ろ過膜エレメント３が曝気槽５に浸漬され、活
性汚泥と処理水を一定期間（３〜４ヵ月）分離すると、
攪拌装置９による上向流にもかかわらず、ろ過膜エレメ
ント３の膜面に活性汚泥のケーキ層が形成される。そこ
で、このケーキ層を取り除くために、まず、曝気槽混合
液の液位が通常の運転時にはろ過膜エレメント３の上部
より約２０〜５０cm程度上にあるので、曝気槽混合液を
ろ過膜エレメント３の上部が見える程度まで引き抜く。
曝気槽混合液を引き抜くことによって現れたろ過膜エレ
メント３のフック４にワイヤ10を引っ掛けてろ過膜エレ
メント３をろ過膜ユニット１の案内溝２に沿って引き上
げてゆく。そして、ろ過膜エレメント３の下端部が約１
０mmから２０mm案内溝２に嵌まった状態でろ過膜エレメ
ント３の引き上げを停止し、ワイヤ10を吊具支持棒７の
フック８に引っ掛ける。Next, a method for cleaning the filtration membrane element will be described. When the filtration membrane element 3 is immersed in the aeration tank 5 and the activated sludge and the treated water are separated for a certain period (3 to 4 months),
A cake layer of activated sludge is formed on the membrane surface of the filtration membrane element 3 despite the upward flow by the agitator 9. Therefore, in order to remove this cake layer, first, since the liquid level of the aeration tank mixed liquid is about 20 to 50 cm above the upper part of the filtration membrane element 3 during normal operation, the aeration tank mixed liquid is filtered. Pull out until you can see the upper part of.
The wire 10 is hooked on the hook 4 of the filtration membrane element 3 which appears by pulling out the aeration tank mixture, and the filtration membrane element 3 is pulled up along the guide groove 2 of the filtration membrane unit 1. And the lower end of the filtration membrane element 3 is about 1
In the state of being fitted in the guide groove 2 of 0 mm to 20 mm, the lifting of the filtration membrane element 3 is stopped, and the wire 10 is hooked on the hook 8 of the lifting tool support rod 7.
【００１０】このように、ろ過膜エレメント３の上端が
吊具支持棒７に懸下支持され、下端は、案内溝２に嵌ま
っているので、ろ過膜エレメント３がぐらぐらせずに固
定された状態で吊り下げられる。この状態で機械または
人手によってろ過膜エレメント３のろ過膜を洗浄する。
洗浄作業に際して、洗浄用水を噴射するノズル（図示せ
ず）を吊具支持棒７、または、その近傍に取り付けて高
圧の洗浄水で予め活性汚泥のケーキ層を洗い流すように
してもよい。As described above, since the upper end of the filtration membrane element 3 is suspended and supported by the hanger support rod 7 and the lower end is fitted in the guide groove 2, the filtration membrane element 3 is fixed without wobbling. Suspended in the state. In this state, the filtration membrane of the filtration membrane element 3 is washed mechanically or manually.
In the cleaning operation, a nozzle (not shown) for injecting cleaning water may be attached to the hanger support rod 7 or in the vicinity thereof to wash away the cake layer of activated sludge with high-pressure cleaning water in advance.
【００１１】なお、全てのろ過膜エレメント３を一度に
吊り上げて洗浄作業を行なってもよいが、ろ過膜エレメ
ント３は通常６〜１０mmの間隔で案内溝２に嵌まってい
るので、３ないし４枚おきに引き上げて吊具支持棒７に
懸下支持すれば、ろ過膜エレメント３の間隔は５０〜１
００mmになり機械による洗浄作業も容易になる。Although all the filtration membrane elements 3 may be lifted at one time for cleaning, the filtration membrane elements 3 are usually fitted in the guide groove 2 at intervals of 6 to 10 mm, and therefore 3 to 4 are used. If every other sheet is pulled up and suspended and supported by the hanger support rod 7, the interval between the filtration membrane elements 3 is 50 to 1
It becomes 00 mm, and the cleaning work by the machine becomes easy.
【００１２】上記実施例の吊具支持棒７は、作業室６内
の内壁に固定されているが、洗浄作業以外の普段の曝気
槽運転時にじゃまにならないように、図５に示すように
取り外しができるようにしたものであってもよい。The hanger support rod 7 of the above embodiment is fixed to the inner wall of the working chamber 6, but is removed as shown in FIG. 5 so as not to be a hindrance during normal aeration tank operation other than cleaning work. It is also possible that it is possible to.
【００１３】また、上記実施例では曝気槽５内にろ過膜
ユニット１を浸漬した場合を示したが、本発明では、ろ
過膜ユニット１を曝気槽５外の他の槽に設けた場合であ
ってもよい。In the above embodiment, the case where the filtration membrane unit 1 is immersed in the aeration tank 5 is shown. However, in the present invention, the filtration membrane unit 1 is provided in another tank outside the aeration tank 5. May be.
【００１４】[0014]
【発明の効果】以上のように本発明によれば、ろ過膜エ
レメントの下端が案内溝に嵌まった状態でろ過膜エレメ
ントの引き上げを停止し、ろ過膜エレメントの上端を吊
具支持棒に懸下支持することによって、ろ過膜エレメン
トがろ過膜ユニット上で固定され複数のろ過膜エレメン
トの洗浄が容易にできる。このため洗浄排水により他の
施設を濡らしたり、汚したりすることがなく、しかも、
ろ過膜エレメントの移動量が少ないため膜を傷つけるお
それが少ない。As described above, according to the present invention, the lifting of the filtration membrane element is stopped with the lower end of the filtration membrane element fitted in the guide groove, and the upper end of the filtration membrane element is suspended on the lifting tool support rod. By supporting the bottom, the filtration membrane element is fixed on the filtration membrane unit, and the plurality of filtration membrane elements can be easily washed. For this reason, the cleaning drainage does not wet or stain other facilities, and
Since the amount of movement of the filtration membrane element is small, it is less likely to damage the membrane.
【図１】本発明の一実施例に用いるろ過膜ユニットの斜
視図である。FIG. 1 is a perspective view of a filtration membrane unit used in an embodiment of the present invention.
【図２】本発明の一実施例に用いるろ過膜エレメントを
吊具支持棒に懸下支持した平面図である。FIG. 2 is a plan view in which a filtration membrane element used in one embodiment of the present invention is suspended and supported by a hanger support rod.
【図３】図２のＡ−Ａ線矢視図である。FIG. 3 is a view taken along the line AA of FIG.
【図４】図２のＢ−Ｂ線矢視図である。FIG. 4 is a view taken along the line BB of FIG.
【図５】吊具支持棒の他の実施例を示した概要図であ
る。FIG. 5 is a schematic view showing another embodiment of the hanging tool support rod.
１ ろ過膜ユニット ２ 案内溝 ３ ろ過エレメント ４ フック ５ 曝気槽 ６ 作業室 ７ 吊具支持棒 ８ フック 1 Filtration Membrane Unit 2 Guide Groove 3 Filtration Element 4 Hook 5 Aeration Tank 6 Working Room 7 Lifting Tool Support Rod 8 Hook
Claims (1)
ユニットを備えた膜分離装置において、ろ過膜エレメン
トをろ過膜ユニットの案内溝に沿って引き上げ、ろ過膜
エレメントの下端が案内溝に嵌まった状態でろ過膜エレ
メントの引き上げを停止し、ろ過膜エレメントの上端を
吊具支持棒に懸下支持し、この引き上げられたろ過膜エ
レメントを洗浄することを特徴とするろ過膜エレメント
の洗浄方法。1. In a membrane separation device comprising a filtration membrane unit having a plurality of filtration membrane elements, the filtration membrane element is pulled up along a guide groove of the filtration membrane unit, and the lower end of the filtration membrane element is fitted in the guide groove. A method for cleaning a filtration membrane element, characterized in that the lifting of the filtration membrane element is stopped in this state, the upper end of the filtration membrane element is suspended and supported by a hanger support rod, and the lifted filtration membrane element is washed.
Priority Applications (6)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3219066A JPH0557158A (en) | 1991-08-30 | 1991-08-30 | Washing method for filter membrane element |
| 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 |
|---|---|---|---|
| JP3219066A JPH0557158A (en) | 1991-08-30 | 1991-08-30 | Washing method for filter membrane element |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0557158A true JPH0557158A (en) | 1993-03-09 |
Family
ID=16729739
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3219066A Pending JPH0557158A (en) | 1991-03-07 | 1991-08-30 | Washing method for filter membrane element |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0557158A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007029861A (en) * | 2005-07-27 | 2007-02-08 | Mk:Kk | Method and apparatus for dehydrating/concentrating sludge |
| JP2009247935A (en) * | 2008-04-02 | 2009-10-29 | Japan Organo Co Ltd | Immersion type membrane-separation device |
-
1991
- 1991-08-30 JP JP3219066A patent/JPH0557158A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007029861A (en) * | 2005-07-27 | 2007-02-08 | Mk:Kk | Method and apparatus for dehydrating/concentrating sludge |
| JP2009247935A (en) * | 2008-04-02 | 2009-10-29 | Japan Organo Co Ltd | Immersion type membrane-separation device |
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