JP3264007B2 - Spiral type membrane separation device - Google Patents
Spiral type membrane separation deviceInfo
- Publication number
- JP3264007B2 JP3264007B2 JP35482092A JP35482092A JP3264007B2 JP 3264007 B2 JP3264007 B2 JP 3264007B2 JP 35482092 A JP35482092 A JP 35482092A JP 35482092 A JP35482092 A JP 35482092A JP 3264007 B2 JP3264007 B2 JP 3264007B2
- Authority
- JP
- Japan
- Prior art keywords
- water
- membrane
- cylindrical pressure
- pipe
- type 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.)
- Expired - Fee Related
Links
Description
【０００１】[0001]
【産業上の利用分野】この発明は、市水中の濁質除去等
に使用するスパイラル型膜分離装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a spiral type membrane separation device used for removing turbidity in city water.
【０００２】[0002]
【従来の技術】筒形耐圧容器と、集水管を連結して直列
に接続され、上記筒形耐圧容器中に収容された複数のス
パイラル型膜エレメントからなる膜モジュール列と、前
記筒形耐圧容器の両端を塞ぐエンドプレートを備えたス
パイラル型膜分離装置は従来から公知である。膜モジュ
ール列を構成する個々のスパイラル型膜エレメントのス
パイラル形状の膜体の膜にはＵＦ膜、ＲＯ膜、ＭＦ膜等
があるが、いずれも図２に示すように膜エレメント１０
は膜体１１と、膜体を貫通する集水管１２と、集水管の
両端部に固定されて膜体の各端部を支持する鍔１３とか
らなる。2. Description of the Related Art A cylindrical pressure vessel and a water collection pipe are connected in series and connected in series, and a membrane module array comprising a plurality of spiral membrane elements housed in the cylindrical pressure vessel, and the cylindrical pressure vessel Spiral type membrane separation devices provided with end plates for closing both ends of the device are conventionally known. The spiral-shaped membranes of the individual spiral-type membrane elements constituting the membrane module array include UF membranes, RO membranes, MF membranes, etc.
Is composed of a film body 11, a water collecting pipe 12 penetrating the film body, and a flange 13 fixed to both ends of the water collecting pipe and supporting each end of the film body.
【０００３】そして、４つ、又は８つ（図では４つ）の
膜エレメントの、集水管同志を筒形ジョイント１４でつ
ないで直列に接続して膜モジュール列２０にし、この膜
モジュール列を１つ宛、原水が蛇行して流れるように連
結した複数本（図では３本）の筒形耐圧容器（ベッセ
ル）３０の１本宛の内部に収容し、各耐圧容器の一端部
にある膜エレメントの集水管の端部はプラグ１５で閉じ
ると共に、プラグ１５と、耐圧容器の一端部を塞ぐエン
ドプレート３１とをボルト１６で連結して膜モジュール
列が器内で移動するのを防止し、耐圧容器の他端部を塞
ぐエンドプレート３２には透過水取出管３３を貫通して
固定し、この透過水取出管の器内の端部と容器の他端部
にある膜エレメントの集水管１２を筒形ジョイント１４
で接続し、膜分離装置を構成する。[0003] Four or eight (four in the figure) water collecting pipes of the four or eight membrane elements are connected in series by connecting them with a cylindrical joint 14 to form a membrane module row 20. A plurality of (three in the figure) cylindrical pressure-resistant containers (vessels) 30 connected so that the raw water flows in a meandering manner are accommodated inside one of the pressure-resistant containers (vessels) 30, and the membrane element at one end of each pressure-resistant container The end of the water collecting pipe is closed by a plug 15 and the plug 15 and an end plate 31 closing one end of the pressure-resistant container are connected by bolts 16 to prevent the membrane module train from moving inside the vessel, An end plate 32 closing the other end of the container is fixed by penetrating a permeate extraction pipe 33 through the permeated water extraction pipe 33, and the water collection pipe 12 of the membrane element at the other end of the container and the other end of the container is connected. Cylindrical joint 14
To form a membrane separation device.
【０００４】図では、原水は３本の筒形耐圧容器の内部
を蛇行して流れる様に、１段目の容器３０−Ｉの一端部
に原水の供給口３４、３段目の容器３０−ＩＩＩの他端
部に濃縮水の流出口３５が設けてある。これにより１段
目と、３段目の筒形耐圧容器３０−Ｉ、３０−ＩＩＩに
収容された膜モジュール列を透過した透過水は該容器中
を流れる原水と同方向に集水管中を流れ、２段目の筒形
耐圧容器３０−ＩＩに収容された膜モジュール列を透過
した透過水は該容器中を流れる原水とは反対方向に集水
管中を流れ、夫々透過水取出管から排出されるので、図
示しない貯溜タンクに貯溜し、一部は逆洗用の洗浄水に
使用する。In the figure, the raw water supply port 34 and the third-stage container 30-I are connected to one end of the first-stage container 30-I so that the raw water flows in a meandering manner inside the three cylindrical pressure-resistant containers. An outlet 35 of the concentrated water is provided at the other end of III. As a result, the permeated water that has passed through the membrane module rows accommodated in the first and third cylindrical pressure-resistant vessels 30-I and 30-III flows through the water collection pipe in the same direction as the raw water flowing in the vessels. The permeated water that has passed through the membrane module row accommodated in the second-stage cylindrical pressure-resistant container 30-II flows through the collecting pipe in the direction opposite to the raw water flowing through the vessel, and is discharged from the permeated water extracting pipe, respectively. Therefore, it is stored in a storage tank (not shown) and a part is used for washing water for backwashing.
【０００５】[0005]
【発明が解決しようとする課題】このように膜濾過運転
を行うと、膜は捕捉した濁質で次第に目詰まりし、単位
膜面積当たりの透過水量（フラックス）が減少する。こ
のため、定期的に膜濾過運転を中断し、洗浄水導入手段
４０により透過水を逆洗水として水頭圧、又は空気で加
圧して透過水取出管３３から膜モジュール列の集水管１
２に供給し、膜体１１を逆洗する必要がある。しかし、
上記従来装置では透過水取出管３３は膜モジュール列の
一方の端部の膜エレメントＮｏ．１の集水管にだけ接続
してあるため、逆洗による膜エレメントＮｏ．１、Ｎ
ｏ．２、Ｎｏ．３、Ｎｏ．４の洗浄効果は、透過水取出
管３３から離れた膜エレメントほど低下して Ｎｏ．１＞Ｎｏ．２＞Ｎｏ．３＞Ｎｏ．４ になり、これに伴い目標通りのフラックスが得られなく
なる。この逆洗効果の低下は、透過水取出管から離れる
ほど膜エレメントに充分な量の逆洗水を供給できなくな
るためと思われる。When the membrane filtration operation is performed as described above, the membrane is gradually clogged with the trapped turbidity, and the amount of permeated water (flux) per unit membrane area is reduced. For this reason, the membrane filtration operation is periodically interrupted, and the permeated water is used as backwashing water by the washing water introducing means 40 or pressurized with air, and the water is collected from the permeated water outlet pipe 33 to the collecting pipe 1 of the membrane module row.
2 and backwash the film body 11. But,
In the above-mentioned conventional apparatus, the permeated water extraction pipe 33 is provided with the membrane element No. at one end of the membrane module row. No. 1 is connected only to the water collection pipe. 1, N
o. 2, No. 3, No. The cleaning effect of No. 4 decreases as the membrane element is farther from the permeated water extraction pipe 33, and the cleaning effect of No. 4 decreases. 1> No. 2> No. 3> No. 4 and, as a result, the desired flux cannot be obtained. This decrease in the backwashing effect is considered to be due to the fact that a further amount of backwashing water cannot be supplied to the membrane element farther from the permeated water outlet pipe.
【０００６】[0006]
【課題を解決するための手段】そこで本発明は、膜モジ
ュール列を収容した筒形耐圧容器の両端を塞ぐ各エンド
プレートに透過水取出管を貫通して設けると共に、その
各透過水取出管を前記膜モジュール列の各端部のスパイ
ラル型膜エレメントの集水管に連結し、且つ各透過水取
出管に洗浄水を導入する洗浄水導入手段を設けたことを
特徴とする。SUMMARY OF THE INVENTION Accordingly, the present invention is to provide a permeated water outlet pipe in each end plate for closing both ends of a cylindrical pressure-resistant container accommodating a row of membrane modules, and to connect each permeated water outlet pipe to the end plate. A washing water introducing means is provided which is connected to a collecting pipe of a spiral type membrane element at each end of the membrane module row and introduces washing water into each permeated water extracting pipe.
【０００７】[0007]
【実施例】図１の実施例において、図２の従来装置と同
じ構成要素には同じ符号を付してある。この実施例でも
複数本（図では３本）の筒形耐圧容器３０を、原水が蛇
行して流れるように連結してある。各筒形耐圧容器には
４つ、又は８つ（図では４つ）の膜エレメント１０を筒
形ジョイント１４で直列に接続した膜モジュール列２０
を１本宛収容する。各筒形耐圧容器の各端部を塞ぐ２つ
のエンドプレート３１，３２には夫々透過水取出管３３
を貫通して固定し、各透過水取出管の器内に位置する端
部と、膜モジュール列２０の各端部の集水管１２とを筒
形ジョイント１４で連結する。各エンドプレート３１，
３２に取付けた透過水取出管３３，３３は膜モジュール
列２０が筒形耐圧容器３０中で移動するのを防止する役
目も兼ねる。DESCRIPTION OF THE PREFERRED EMBODIMENTS In the embodiment of FIG. 1, the same components as those of the conventional apparatus of FIG. 2 are denoted by the same reference numerals. Also in this embodiment, a plurality of (three in the figure) cylindrical pressure-resistant containers 30 are connected so that raw water flows in a meandering manner. A membrane module row 20 in which four or eight (four in the figure) membrane elements 10 are connected in series by a cylindrical joint 14 in each cylindrical pressure vessel.
Are accommodated one by one. The two end plates 31 and 32 that close each end of each cylindrical pressure vessel have permeate extraction pipes 33 respectively.
The end of each permeated water extraction pipe located inside the vessel and the water collection pipe 12 at each end of the membrane module row 20 are connected by a cylindrical joint 14. Each end plate 31,
The permeate discharge pipes 33 attached to the pipe 32 also serve to prevent the membrane module row 20 from moving in the cylindrical pressure vessel 30.
【０００８】１段目の筒形耐圧容器３０−Ｉの供給口３
４に原水を供給し、３段目の筒形耐圧容器３０−ＩＩＩ
の流出口３５から排出させると、各筒形耐圧容器中を流
れる際に膜モジュール列２０を構成する膜エレメントを
透過して集水管に流れ込んだ透過水は各筒形耐圧容器の
両端のエンドプレート３１，３２に取付けた透過水取出
管３３，３３から外に排出され、夫々貯溜される。[0008] Supply port 3 of the first stage cylindrical pressure-resistant container 30-I
4 is supplied with raw water, and the third stage cylindrical pressure-resistant container 30-III
When the water is discharged from the outlet 35, the permeated water flowing through the membrane elements constituting the membrane module row 20 and flowing into the water collection pipe when flowing through each cylindrical pressure-resistant container is supplied to the end plates at both ends of each cylindrical pressure-resistant container. The water is discharged from the permeated water discharge pipes 33, 33 attached to 31, 32, and stored respectively.
【０００９】各膜モジュール列の膜エレメントの膜体を
逆洗する際は、洗浄水導入手段４０により各筒形耐圧容
器の両端のエンドプレート３１，３２に取付けた透過水
取出管３３，３３から透過水を水頭圧、又は空気で加圧
して供給する。これによりエンドプレート３２に取付け
た透過水取出管３３に供給した透過水は、主として膜エ
レメントＮｏ．１、Ｎｏ．２を洗浄し、エンドプレート
３１に取付けた透過水取出管３３に供給した透過水は、
主として膜エレメントＮｏ．４、Ｎｏ．３を洗浄する。
この結果、膜エレメントＮｏ．１、Ｎｏ．２、Ｎｏ．
３、Ｎｏ．４の洗浄効果は、 Ｎｏ．１≧Ｎｏ．２＝Ｎｏ．３≦Ｎｏ．４ になり、洗浄効果は向上して膜濾過運転を行った際のフ
ラックスは従来装置の約１．５倍にアップする。When the membranes of the membrane elements of each membrane module row are backwashed, the washing water introduction means 40 causes the permeated water outlet pipes 33, 33 attached to the end plates 31, 32 at both ends of each cylindrical pressure vessel. The permeated water is supplied by pressurizing with head pressure or air. As a result, the permeated water supplied to the permeated water outlet pipe 33 attached to the end plate 32 mainly includes the membrane element No. 1, No. 2 and the permeated water supplied to the permeated water outlet pipe 33 attached to the end plate 31 is
Mainly membrane element No. 4, no. Wash 3
As a result, the membrane element No. 1, No. 2, No.
3, No. The cleaning effect of No. 4 1 ≧ No. 2 = No. 3 ≦ No. 4, the cleaning effect is improved, and the flux when performing the membrane filtration operation is increased about 1.5 times as compared with the conventional apparatus.
【００１０】図１に示した実施装置と、図２に示した従
来装置を使用し、同じ運転条件で某市の市水の濁質除去
を行った際のフラックスを以下に示す。使用した膜エレ
メントはスパイラル型ＵＦ型膜エレメントであり、運転
方法は２７分運転／３分逆洗、運転期間は２月１０日〜
９月２４日である。従来装置の定常運転時のフラックス
は２．２ｍ3 ／ｍ2 Ｄａｙであるのに対し、実施装置の
定常運転時のフラックスは３．０ｍ3 ／ｍ2 Ｄａｙであ
った。[0010] The flux when the turbidity removal of city water of a certain city is performed under the same operating conditions using the embodiment apparatus shown in Fig. 1 and the conventional apparatus shown in Fig. 2 is shown below. The used membrane element is a spiral type UF type membrane element, the operation method is 27 minutes operation / 3 minutes backwash, and the operation period is from February 10 to
It is September 24. The flux at the time of steady operation of the conventional device was 2.2 m 3 / m 2 Day, while the flux at the time of steady operation of the working device was 3.0 m 3 / m 2 Day.
【００１１】[0011]
【発明の効果】以上で明らかなように、本発明によれば
各筒形耐圧容器中に収容した膜モジュール列を構成する
個々の膜エレメントを同程度に充分に洗浄することがで
きる。これにより膜面のスケール成分の堆積量が低減
し、高フラックスを達成できる。As is apparent from the above, according to the present invention, the individual membrane elements constituting the membrane module array housed in each of the cylindrical pressure-resistant containers can be sufficiently and equally cleaned. Thereby, the deposition amount of the scale component on the film surface is reduced, and a high flux can be achieved.
【図１】本発明によるスパイラル型膜分離装置の一実施
例の模式断面図である。FIG. 1 is a schematic sectional view of an embodiment of a spiral type membrane separation device according to the present invention.
【図２】従来のスパイラル型膜分離装置の模式断面図で
ある。FIG. 2 is a schematic sectional view of a conventional spiral-type membrane separation device.
１０ 膜エレメント １１ 膜体 １２ 集水管 ２０ 膜モジュール列 ３０ 筒形耐圧容器 ３１ エンドプレート ３２ エンドプレート ３３ 透過水取出管 ４０ 洗浄水導入手段 DESCRIPTION OF SYMBOLS 10 Membrane element 11 Membrane body 12 Water collecting pipe 20 Membrane module row 30 Cylindrical pressure-resistant container 31 End plate 32 End plate 33 Permeate extraction pipe 40 Washing water introduction means
───────────────────────────────────────────────────── フロントページの続き (58)調査した分野(Int.Cl.7，ＤＢ名) B01D 63/12 B01D 65/02 ──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int.Cl. 7 , DB name) B01D 63/12 B01D 65/02
Claims (1)
に接続され、上記筒形耐圧容器中に収容された複数のス
パイラル型膜エレメントからなる膜モジュール列と、前
記筒形耐圧容器の両端を塞ぐエンドプレートを備えたス
パイラル型膜分離装置において、筒形耐圧容器の両端を
塞ぐ各エンドプレートに透過水取出管を貫通して設ける
と共に、その各透過水取出管を前記膜モジュール列の各
端部のスパイラル型膜エレメントの集水管に連結し、且
つ各透過水取出管に洗浄水を導入する洗浄水導入手段を
設けたことを特徴とするスパイラル型膜分離装置。1. A cylindrical pressure-resistant container, a membrane module array comprising a plurality of spiral-type membrane elements connected in series by connecting a water collecting pipe and housed in the cylindrical pressure-resistant container, and the cylindrical pressure-resistant container In a spiral-type membrane separation device provided with end plates closing both ends of the cylindrical module, a permeated water extraction pipe is provided through each end plate closing both ends of the cylindrical pressure-resistant container, and each permeated water extraction pipe is connected to the membrane module row. A spiral-type membrane separation device, which is connected to a water collecting pipe of a spiral-type membrane element at each end of the above, and provided with washing water introducing means for introducing washing water into each permeated water extracting pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35482092A JP3264007B2 (en) | 1992-12-18 | 1992-12-18 | Spiral type membrane separation device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP35482092A JP3264007B2 (en) | 1992-12-18 | 1992-12-18 | Spiral type membrane separation device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06182163A JPH06182163A (en) | 1994-07-05 |
| JP3264007B2 true JP3264007B2 (en) | 2002-03-11 |
Family
ID=18440123
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP35482092A Expired - Fee Related JP3264007B2 (en) | 1992-12-18 | 1992-12-18 | Spiral type membrane separation device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3264007B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL1019565C2 (en) * | 2001-12-14 | 2003-06-17 | Norit Membraan Tech Bv | Membrane filter housing and method that it uses. |
| JP5875914B2 (en) * | 2012-03-22 | 2016-03-02 | 三井造船株式会社 | Membrane module unit for water treatment |
| JP6399896B2 (en) * | 2014-10-31 | 2018-10-03 | 株式会社日立製作所 | Reverse osmosis processing equipment |
-
1992
- 1992-12-18 JP JP35482092A patent/JP3264007B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06182163A (en) | 1994-07-05 |
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