JPH02233125A - Filter apparatus - Google Patents
Filter apparatusInfo
- Publication number
- JPH02233125A JPH02233125A JP5318489A JP5318489A JPH02233125A JP H02233125 A JPH02233125 A JP H02233125A JP 5318489 A JP5318489 A JP 5318489A JP 5318489 A JP5318489 A JP 5318489A JP H02233125 A JPH02233125 A JP H02233125A
- Authority
- JP
- Japan
- Prior art keywords
- ultrafiltration membrane
- opening
- stock solution
- raw solution
- closing
- 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 claims abstract description 72
- 238000000108 ultra-filtration Methods 0.000 claims abstract description 54
- 230000007246 mechanism Effects 0.000 claims abstract description 45
- 238000009826 distribution Methods 0.000 claims abstract description 30
- 239000000706 filtrate Substances 0.000 claims abstract description 14
- 239000007787 solid Substances 0.000 claims abstract description 10
- 230000003204 osmotic effect Effects 0.000 claims abstract description 9
- 238000001914 filtration Methods 0.000 claims description 31
- 239000011550 stock solution Substances 0.000 claims description 31
- 238000005304 joining Methods 0.000 claims description 3
- 230000008961 swelling Effects 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 12
- 239000007788 liquid Substances 0.000 description 11
- 239000012141 concentrate Substances 0.000 description 7
- 238000010586 diagram Methods 0.000 description 7
- 238000003860 storage Methods 0.000 description 6
- 230000001105 regulatory effect Effects 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 244000005700 microbiome Species 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000010802 sludge Substances 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000855 fermentation Methods 0.000 description 1
- 230000004151 fermentation Effects 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 239000012086 standard solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
Description
【発明の詳細な説明】
［発明の目的］
（産業上の利用分野）
本発明は、下廃水，活性汚泥懸濁液，活性汚泥２次処理
水醗酵液等をろ過するろ過装置に係わり、特に前記被処
理水をろ過する限外ろ過膜モジュール内に堆積する不要
固形物のケーキ層を除去する技術を改良したろ過装置に
関する。[Detailed description of the invention] [Object of the invention] (Industrial application field) The present invention relates to a filtration device for filtering sewage water, activated sludge suspension, activated sludge secondary treated water fermentation liquid, etc. The present invention relates to a filtration device with an improved technology for removing a cake layer of unnecessary solids deposited in an ultrafiltration membrane module that filters the water to be treated.
（従来の技術）
従来のこの種のろ過装置は大略第６図に示すような構成
を有している。すなわち、流入原液１をボンプ２で昇圧
して分配機構３に導き、ここでボンブ２から送られてく
る原液１を並列接続され物複数のろ過機構１０ａ，１０
ｂ，・・・へ分配導入し、これらろ過機構１０ａ，１０
ｂ，・・・を用いてろ液４と濃縮液５に分離して排出す
る構成である。(Prior Art) A conventional filtration device of this type has a configuration roughly shown in FIG. That is, the inflow stock solution 1 is pressurized by the bomb 2 and guided to the distribution mechanism 3, where the stock solution 1 sent from the bomb 2 is passed through a plurality of filtration mechanisms 10a, 10 connected in parallel.
b, ..., and these filtration mechanisms 10a, 10
b, . . . are used to separate the filtrate 4 and the concentrate 5 and discharge them.
前記各ろ過機構１０ａ，１０ｂ，・・・は、分配機構３
側から濃縮液５排出側へ常時は開状態の開閉弁１１ａ，
ｌｌｂ，・・・、内部にウルトラフィルタ膜（以下，Ｕ
Ｆ膜と指称する’）１２ａ，１２ｂ，・・が添設されて
おり前記開閉弁１１ａ，ｌｌｂ，・・・を通ってきた原
液１をろ液４と濃縮液５に分離する限外ろ過膜モジュー
ル１３ａ，１３ｂ，・・・スポンジボール１４ａ，１４
ｂ，・・・を収納する捕集器１５ａ，１５ｂ，・・・、
常時は開状態の開閉弁１６ａ，１６ｂ，−、調整弁１７
ａ，１７ｂ，．．．および流量計１８ａ，１８ｂ，・・
・の順序で配設されている。Each of the filtration mechanisms 10a, 10b, . . . is a distribution mechanism 3.
An on-off valve 11a which is normally open from the side to the discharge side of the concentrated liquid 5,
llb,..., an ultra filter membrane (hereinafter referred to as U) inside
12a, 12b, . . . , referred to as F membrane, are attached thereto, and the ultrafiltration membrane separates the stock solution 1 that has passed through the on-off valves 11a, llb, . . . into a filtrate 4 and a concentrated solution 5. Modules 13a, 13b,... sponge balls 14a, 14
collectors 15a, 15b, . . .
On-off valves 16a, 16b, -, which are normally open, and regulating valve 17
a, 17b, . ．． ．． and flow meters 18a, 18b,...
・They are arranged in the following order.
ところで、以上のようなろ過装置においては、原液１が
限外ろ過膜モジュール１３ａ，１３ｂ，・・・のＵＦ膜
１２ａ，１２ｂ，・・・で分離ろ過する過程でそのＵＦ
膜１２ａ，１２ｂ，・・・の表面に原液１中に懸濁して
いる固形分，例えば微生物，微生物の死がい等が堆積し
、これがケーキ層を形成することによりろ過効率を著し
く低下させる。By the way, in the above-described filtration device, in the process of separating and filtering the stock solution 1 through the UF membranes 12a, 12b, . . . of the ultrafiltration membrane modules 13a, 13b, .
Solids suspended in the stock solution 1, such as microorganisms and dead microorganisms, accumulate on the surfaces of the membranes 12a, 12b, .
そこで、かかるケーキ層を除去する手段として、前記捕
集器１５ａ．１５ｂ，・・・内に前述したようにスポン
ジボール１４ａｒ １ ４ ｂ ＋ ・・・を収納す
ると共に常時は開状態にある開閉弁１１ａ，ｌｌｂ．・
・・および１６ａ，１６ｂ，・・・を閉成し、その代わ
りに常時は閉状態にある開閉弁２１ａ，２ｌｂ，・・・
および２２ａ．２２ｂ，・・・を開放し、ポンブ２から
送られてくる原液１を分配機構３から開閉弁２１ａ，２
１ｂ，−・・、捕集器１５ａ，１５ｂ，−・・および限
外ろ過膜モジュール１３ａ，１３ｂ，・・・を通す。こ
のとき、捕集器１５ａ，１５ｂ，・・・内のスポンジボ
ール１４ａ，１４ｂ，・・・は原液１による押圧力を受
けながら限外ろ過膜モジュール１３ａ，１３ｂ，−・・
を通り、そのＵＦ膜１２ａ，１２ｂ，・・・に堆積する
ケーキ層をかき落としながら移動し、限外ろ過膜モジュ
ール１３ａ，１３ｂ，・・・を挟んで反対側に設置され
た別の捕集器２３ａ，２３ｂ１・・・に捕集される。な
お、限外ろ過膜モジュール１３ａ，１３ｂ，・・・内で
かき落とされた懸濁化された液体は捕集器２３ａ，２３
ｂ，・・・、開閉弁２２ａ，２２ｂ，−・・、調整弁１
７ａ，１７ｂ，・・・を通り、あるいは開閉弁１ １
ａ， １ ｌ ｂ，・・・および１６ａ，１６ｂ，・
・・の開時には濃縮液と共に濃縮液排出ラインへ排出さ
れる。Therefore, as a means for removing such a cake layer, the collector 15a. As described above, the sponge balls 14ar 1 4 b + .・
... and 16a, 16b, ..., and instead, the on-off valves 21a, 2lb, ... which are normally closed.
and 22a. 22b, .
1b, --, collectors 15a, 15b, --, and ultrafiltration membrane modules 13a, 13b, --. At this time, the sponge balls 14a, 14b, . . . in the collectors 15a, 15b, .
The UF membranes 12a, 12b, . . . pass through the ultrafiltration membrane modules 13a, 13b, . 23a, 23b1... Note that the suspended liquid scraped off in the ultrafiltration membrane modules 13a, 13b, . . . is collected in collectors 23a, 23.
b,..., on-off valves 22a, 22b, -..., regulating valve 1
7a, 17b, ... or on-off valve 1 1
a, 1 l b,... and 16a, 16b,...
When ... is opened, it is discharged together with the concentrate into the concentrate discharge line.
（発明が解決しようとする課題）
しかし、以上のようにスポンジボール１４ａ，１４ｂ，
・・・を用いて限外ろ過膜モジュール１３ａ，１３ｂ，
・・・内を機械的に洗浄する場合には次のような種々の
問題がある。(Problem to be solved by the invention) However, as described above, the sponge balls 14a, 14b,
Ultrafiltration membrane modules 13a, 13b,
...When cleaning the inside mechanically, there are various problems as follows.
■、その１つは、限外ろ過膜モジュール１３ａ，１３ｂ
，・・・が円筒状の場合には適用できるが、それ以外の
断面形状例えば角型状のものには適用できない。■, one of them is ultrafiltration membrane modules 13a, 13b
, ... are cylindrical, but cannot be applied to other cross-sectional shapes, such as square shapes.
■、また、スポンジボール１４ａ，１４ｂ，・・・は限
外ろ過膜モジュール１ ３ ａ．１ ３ ｂ＋＋ ・・
・内を充分な接触圧で接触しながらケーキ層をかき落と
すものであるため、スポンジボール１４ａ，１４ｂ，・
・・の損傷が激しく、時々損傷度合を調べて交換する必
要がある。(2) Also, the sponge balls 14a, 14b, . . . are the ultrafiltration membrane module 1 3 a. 1 3 b++...
・Since the cake layer is scraped off while contacting the inside with sufficient contact pressure, the sponge balls 14a, 14b, ・
... is severely damaged, and it is necessary to check the degree of damage from time to time and replace it.
■、サラニ、スポンジボール１４ａ，１４ｂ，・・・を
走行させるために、新たに開閉弁２１ａ，２１ｂ，・・
・および２２ａ，２２ｂ，・・・等を付加する必要があ
り、その結果，開閉弁の使用個数が多くなり、かつ、弁
の開閉制御が複雑化し、それだけ接続部分が多くなって
スポンジボール１４ａ，１４ｂ，・・・の走行トラブル
を頻発させる問題がある。■ In order to run the sponge balls 14a, 14b,..., newly open/close valves 21a, 21b,...
・And 22a, 22b, etc. need to be added, and as a result, the number of on-off valves used increases, valve opening/closing control becomes complicated, and the number of connecting parts increases accordingly. 14b, . . . have a problem that frequently causes running troubles.
本発明は上記実情に鑑みてなされたもので、限外ろ過膜
モジュールの断面形状に影響されずに適用でき、かつ、
簡単な構成で確実に限外ろ過膜モジュールに堆積する不
要固形物のケーキ層を除去しつるろ過装置を提供するこ
とを目的とする。The present invention has been made in view of the above circumstances, and can be applied without being affected by the cross-sectional shape of the ultrafiltration membrane module, and
It is an object of the present invention to provide a vine filtration device that can reliably remove a cake layer of unnecessary solid matter deposited on an ultrafiltration membrane module with a simple configuration.
［発明の構成］
（課題を解決するための手段）
本発明は上記課題を解決するために、分配機構と限外ろ
過膜モジュールとの間に、限外ろ過膜モジュール内に堆
積する不要固形分のケーキ層を除去するとき、各限外ろ
過膜モジュールへの原液導入流路を任意または所定の順
序で閉じる開閉機構を設け、前記限外ろ過膜モジュール
によるろ過液と前記原液との浸透圧の差を利用して限外
ろ過膜モジュール内に堆積するケーキ層を膨化させて除
去するろ過装置である。[Structure of the Invention] (Means for Solving the Problems) In order to solve the above problems, the present invention provides a method for eliminating unnecessary solid content that accumulates in the ultrafiltration membrane module between the distribution mechanism and the ultrafiltration membrane module. When removing the cake layer, an opening/closing mechanism is provided to close the flow path for introducing the stock solution to each ultrafiltration membrane module in an arbitrary or predetermined order, and the osmotic pressure between the filtrate by the ultrafiltration membrane module and the stock solution is reduced. This is a filtration device that utilizes the difference to expand and remove the cake layer deposited within the ultrafiltration membrane module.
また、本発明は、前記分配機構および開閉機構として、
２つのブランケットを着脱自在に接合してなる中空容器
内に前記原液流入口および前記複数の限外ろ過膜モジュ
ールヘ連通する接続口を設け、これら複数の接続口を回
転駆動源により回転する開閉板を回転させて順次閉じる
ことにより、前記分配機構と開閉機構とを一体化構造と
して実現するものである。Further, the present invention provides, as the distribution mechanism and the opening/closing mechanism,
A connection port communicating with the raw solution inlet and the plurality of ultrafiltration membrane modules is provided in a hollow container formed by removably joining two blankets, and an opening/closing plate that rotates the plurality of connection ports by a rotational drive source. By rotating and sequentially closing the distribution mechanism and the opening/closing mechanism, the distribution mechanism and the opening/closing mechanism are realized as an integrated structure.
（作用）
従って、本発明は以上のような手段を講じたことにより
、請求項第１項および第２項においては、分配機構と各
限外ろ過膜モジュールとの間に設けた開閉機構により、
ある特定の限外ろ過膜モジュールあるいは所定の順序で
選択的に複数の限外ろ過膜モジュールへの原液導入流路
を閉成すると、限外ろ過膜モジュール内の圧力がほぼ大
気圧となり、ＵＦ膜内外のる液と原液との間で浸透圧の
差による流れ、すなわちろ液の原液側へ向く流れが生じ
てＵＦ膜に堆積する不要固形物のケーキ層が膨化する。(Function) Therefore, the present invention takes the above measures, and in claims 1 and 2, the opening/closing mechanism provided between the distribution mechanism and each ultrafiltration membrane module,
When the flow path for introducing the raw solution into a certain ultrafiltration membrane module or multiple ultrafiltration membrane modules selectively in a predetermined order is closed, the pressure inside the ultrafiltration membrane module becomes almost atmospheric pressure, and the UF membrane A flow occurs due to the difference in osmotic pressure between the inner and outer liquids and the stock solution, that is, a flow toward the stock solution side of the filtrate, and the cake layer of unnecessary solids deposited on the UF membrane swells.
そこで、このケーキ層の膨化状態を作った後、原液導入
流路を開くと膨化したケーキ層はクロスフローにより剪
断力で容易に剥離し濃縮液排出ラインに排出されるので
、ＵＦ膜のろ過量を元の状態に回復させることができる
。Therefore, after creating a swollen state for this cake layer, when the stock solution introduction channel is opened, the swollen cake layer is easily peeled off by shear force due to cross flow and discharged to the concentrate discharge line, so the filtration rate of the UF membrane is can be restored to its original state.
次に、請求項第３項においては、中空容器内に開閉板を
収納すると共にこの開閉板を回転駆動源により回転する
と、この開閉板は原液流入口から流入される原液に対し
、各限外ろ過膜モジュールに連通ずる接続口を所定の順
序で閉じるので、非常にコンパクトの構成でろ液と原液
との浸透圧の差を利用してＵＦ膜に堆積するケーキ層を
膨化させて除去することができる。Next, in claim 3, when the opening/closing plate is housed in the hollow container and the opening/closing plate is rotated by a rotational drive source, the opening/closing plate is configured to move the undiluted solution flowing from the undiluted solution inlet to each limit. Since the connection ports communicating with the filtration membrane module are closed in a predetermined order, the cake layer deposited on the UF membrane can be expanded and removed using the difference in osmotic pressure between the filtrate and the stock solution with a very compact structure. can.
（実施例）
以下、本発明の一実施例について第１図および第２図を
参照して説明する。第１図は本装置の全体構成を示す図
であって、３１は原液３２を一時貯留する貯留槽であっ
て、この貯留槽３１内の原液３２はポンブ３３で吸引昇
圧されて分配機構３４に送られる。この分配機構３４は
ボンブ３３から送られてくる原液３２を複数の限外ろ過
膜モジュール３５ａ，３５ｂ，・・・へ分配導入する機
能をもっている。なお、この限外ろ過膜モジュール３５
ａ，３５ｂ，・・・は例えば第２図に示すように表面部
に複数の孔３６，・・・を有する任意断面形状の筒状モ
ジュール本体３７の内側に織布材３８およびＵＦ膜３９
の順序で添着され、かつ、これらＵＦ膜３９等を含む筒
状モジュール本体３７がハウジング４０に収納されてい
る。(Example) An example of the present invention will be described below with reference to FIGS. 1 and 2. FIG. 1 is a diagram showing the overall configuration of this device, and numeral 31 is a storage tank for temporarily storing the stock solution 32. The stock solution 32 in the storage tank 31 is suctioned and pressurized by a pump 33 and sent to a distribution mechanism 34. Sent. This distribution mechanism 34 has a function of distributing and introducing the stock solution 32 sent from the bomb 33 to a plurality of ultrafiltration membrane modules 35a, 35b, . In addition, this ultrafiltration membrane module 35
For example, as shown in FIG. 2, a, 35b, .
A cylindrical module main body 37 including these UF membranes 39 and the like is housed in the housing 40 .
さらに、本装置においては、前記分配機構３４と複数の
限外ろ過膜モジュール３５ａ，３５ｂ，・・・との間に
各限外ろ過膜モジュール３５ａ，３５ｂ，・・・への原
液導入流路を開閉する開閉機構４１が設けられている。Furthermore, in this device, a flow path for introducing the stock solution into each ultrafiltration membrane module 35a, 35b, . An opening/closing mechanism 41 that opens and closes is provided.
この開閉機構４１は第３図に示す如く限外ろ過膜モジュ
ール３５ａ，３５ｂ．・・・に対応して開閉弁４ １
ａ， ４ ｌ ｂ，・・・が設けられている。As shown in FIG. 3, this opening/closing mechanism 41 includes ultrafiltration membrane modules 35a, 35b. Open/close valve 4 1 corresponding to...
a, 4 l b, . . . are provided.
４２は各限外ろ過膜モジュール３ ５ ａ， ３ ５
ｂ，・・・で得られたろ液を導くろ液流通管路、４３
は貯留槽である。一方、各限外ろ過膜モジュール３５ａ
，３５ｂ，・・・で分離された濃縮液はそれぞれ調整弁
４４ａ，４４ｂ，・・・および流量計４５ａ，４５ｂ，
・・・を介して他端開放端の濃縮液流通管路４６を通っ
て所定の処理場へ送られる。42 is each ultrafiltration membrane module 3 5 a, 3 5
b, filtrate distribution pipe for guiding the filtrate obtained in..., 43
is a storage tank. On the other hand, each ultrafiltration membrane module 35a
, 35b, . . . are respectively controlled by regulating valves 44a, 44b, . . . and flow meters 45a, 45b, .
... and is sent to a predetermined processing site through a concentrate distribution pipe 46 with an open end at the other end.
次に、以上のように構成された装置の動作を説明する。Next, the operation of the apparatus configured as above will be explained.
ボンブ３３を駆動すると貯留槽３１内の原液は分配機構
３４および開閉機構４１の各開閉弁４１ａ，４１ｂ，・
・・を通って各限外ろ過膜モジュール３５ａ，３５ｂ，
・・・へ導入される。これら限外ろ過膜モジュール３５
ａ，３５ｂ，・・・内では開閉機構４１からの原液がＵ
Ｆ膜３９，・・・と平行に流れ、いわゆるクロスフロー
によりろ過処理が行われる。そして、これら限外ろ過膜
モジュール３５ａ，３５ｂ．．・・・でろ過されたろ液
はろ液流通管路４２を通って貯留槽４３に送られ、一方
、未ろ過液１つまり濃縮液は調整弁４４ａ，４４ｂ，・
・・および流量計４５ａ，４５ｂ，・・・を通って濃縮
液流通管路４６から排出される。When the bomb 33 is driven, the stock solution in the storage tank 31 flows through the distribution mechanism 34 and the opening/closing valves 41a, 41b, .
... through each ultrafiltration membrane module 35a, 35b,
... will be introduced. These ultrafiltration membrane modules 35
a, 35b, . . ., the undiluted solution from the opening/closing mechanism 41 is
It flows parallel to the F membranes 39, . . . , and filtration processing is performed by so-called cross flow. These ultrafiltration membrane modules 35a, 35b. ．． The filtered filtrate is sent to the storage tank 43 through the filtrate distribution pipe 42, while the unfiltered liquid 1, that is, the concentrated liquid is sent to the storage tank 43 through the regulating valves 44a, 44b, .
. . and flow meters 45a, 45b, . . . and is discharged from the concentrate distribution pipe 46.
ところで、限外ろ過膜モジュール３５ａ，３５ｂ，・・
・によるろ過作用により、ＵＦ膜３９の原液側には原液
中の固形分が堆積し，いわゆるケーキ層が形成される。By the way, the ultrafiltration membrane modules 35a, 35b,...
Due to the filtration action of *, the solid content in the stock solution is deposited on the stock solution side of the UF membrane 39, forming a so-called cake layer.
このケーキ層はろ過抵抗を高め、ろ過効率を著しく低下
させる。This cake layer increases filtration resistance and significantly reduces filtration efficiency.
そこで、本装置においては、前記ケーキ層を除去するた
めに、例えばある１つを特定しあるいは所定時間ごとに
開閉機構４１の各開閉弁４１ａ，４ｌｂ，・・・を順次
所定時間閉じる制御を行う。ここで、例えば開閉弁４１
ａを閉じると限外ろ過膜モジュール３５ａの原液側が濃
縮液流通管路４６に連絡しているのでほぼ大気圧となり
、そのためＵＦ膜３９のケーキ層ではる液と原液との浸
透圧の差によってろ液側から原液側への流れが生じ、Ｕ
Ｆ膜３９のケーキ層が膨化する。Therefore, in this device, in order to remove the cake layer, for example, one particular one is identified or each of the on-off valves 41a, 4lb, . . . . Here, for example, the on-off valve 41
When a is closed, the undiluted solution side of the ultrafiltration membrane module 35a is connected to the concentrated solution distribution line 46, so the pressure is almost atmospheric. Therefore, the filtration occurs due to the difference in osmotic pressure between the undiluted solution and the undiluted solution in the cake layer of the UF membrane 39. A flow occurs from the liquid side to the undiluted liquid side, and U
The cake layer of the F membrane 39 swells.
かかる状態において次の限外ろ過膜モジュール３５ｂの
洗浄するため、既に閉成中の開閉弁４１ａを開くと、分
配機構３４から原液が限外ろ過膜モジュール３５ａ内に
流れ込み膨化したケーキ層がクロスフローの剪断力によ
って剥離し濃縮液と共に濃縮液流通管路４６側へ流れ出
る。従って、ＵＦ膜３９はケーキ層の除去により元のろ
過量に回復する。なお、開閉弁４１ａの閉時間は１時間
程度で充分である。因みに、第４図は横軸に時間、左側
縦軸にモジュール３５ａを３時問おきに１時間開閉弁４
１ａを閉じたときのろ過ｆｆｉｌを示し、また右側縦軸
には各モジュール３５８〜３５ｄに対応する開閉弁４１
ａ〜４１ｄを１時間ごとに順次閉じたときの全体のろ過
量■を示す。In this state, in order to clean the next ultrafiltration membrane module 35b, when the on-off valve 41a, which is already closed, is opened, the stock solution flows into the ultrafiltration membrane module 35a from the distribution mechanism 34, and the expanded cake layer cross-flows. It is peeled off by the shearing force of and flows out to the concentrated liquid distribution pipe 46 side together with the concentrated liquid. Therefore, the UF membrane 39 recovers its original filtration rate by removing the cake layer. Note that approximately one hour is sufficient for the closing time of the on-off valve 41a. Incidentally, in Fig. 4, the horizontal axis shows time, and the left vertical axis shows the module 35a, which opens and closes the valve 4 every 3 hours.
The filtration ffil when 1a is closed is shown, and the right vertical axis shows the on-off valves 41 corresponding to each module 358 to 35d.
The total filtration amount ■ is shown when a to 41d are sequentially closed every hour.
この図のＩから明かなようにろ過量は徐々に低下するが
、開閉弁４１ａを１時間閉じた後にはろ過量が完全に回
復しており、一方、全モジュール３５８〜３５ｄにおい
ても■から明かなように安定なろ過量が得られることが
分る。As is clear from I in this figure, the amount of filtration gradually decreases, but after closing the on-off valve 41a for one hour, the amount of filtration has completely recovered. It can be seen that a fairly stable filtration amount can be obtained.
従って、以上のような実施例の構成によれば、限外ろ過
膜モジュール３５ａ〜３５ｄに対応する開閉弁４１ａ〜
４１ｄを任意また幌所定時間ごとに順次閉成することに
より、ろ液と原液との浸透圧差を利用してＵＦ膜３９，
・・・に堆積するケーキ層を膨化させて剥離する構成で
あるので、従来のようにスポンジボールを用いずに簡単
にケーキ層を除去でき、また各限外ろ過膜モジュール３
５ａ一３５ｄに対応する開閉弁４１ａ〜４１ｄを備える
だけ．でよいので、従来のものに比べて弁の使用個数を
大幅に減らすことができ、それに伴って弁の開閉制御が
容易となる。さらに、浸透圧の差を利用してケーキ層を
膨化させた後は通常の運転状態で不要物を排出でき、不
良限外ろ過膜モジュールの保守の一貫として実施するこ
とができ、運転管理上からも非常に有効なものである。Therefore, according to the configuration of the embodiment as described above, the on-off valves 41a to 41a corresponding to the ultrafiltration membrane modules 35a to 35d
By sequentially closing the hood 41d arbitrarily or at predetermined intervals, the UF membrane 39,
Since the structure is such that the cake layer deposited on the ultrafiltration membrane module 3 is expanded and peeled off, the cake layer can be easily removed without using a sponge ball as in the conventional method.
All that is required is on-off valves 41a to 41d corresponding to valves 5a to 35d. Therefore, the number of valves used can be significantly reduced compared to conventional ones, and accordingly, the opening and closing control of the valves becomes easier. Furthermore, after the cake layer is expanded using the difference in osmotic pressure, unnecessary substances can be discharged under normal operating conditions. is also very effective.
なお、上記実施例では分配機構３４と開閉機構４１とを
それぞれ独立的に設けたが、例えば第５図に示すように
一体的な構造としてもよい。具体的に述べると、例えば
円形の下側ブランケット５０と円形の上側ブランケット
５１とを着脱自在に接合してなる円筒状中空容器５２を
形成する。In the above embodiment, the distribution mechanism 34 and the opening/closing mechanism 41 are provided independently, but they may have an integrated structure as shown in FIG. 5, for example. Specifically, a cylindrical hollow container 52 is formed by removably joining a circular lower blanket 50 and a circular upper blanket 51, for example.
この下側ブランケット５０には偏心位置に原液を導入す
る原液導入口５３を，また上側プランケット５１には同
一円周上で限外ろ過膜モジュール３５８〜３５ｄに連通
ずるように等間隔を有して接続口５４ａ〜５４ｄが設け
られている。この下側ブランケット５０の中心部は貫通
され、この下側ブランケット５０の内側であって中心部
貫通孔を中心とする位置および中空容器内壁部にそれぞ
れ所定高さの筒状押え部材５５．５６が設けられている
。さらに、下側ブランケット５０の下側には回転駆動源
５７が取付けられ、この回転駆動源５７からの回転がギ
ャ５８を介して前記貫通孔および筒状押え部材５５内を
貫通する回転軸６０に伝達する構成となっている。そし
て、中空容器５２内においてこの回転軸６０には例えば
２７０゜の切欠きを持った開閉板６１が回転可能に取付
けられ、この開閉板６１の回転時に前記接続口５４ａ〜
５４ｄの内側突起状部６２２〜６２ｄにシール状態で接
触し、いわゆる弁閉状態を作り出す構成となっている。The lower blanket 50 has a stock solution inlet 53 at an eccentric position for introducing the stock solution, and the upper plunket 51 has equal intervals on the same circumference so as to communicate with the ultrafiltration membrane modules 358 to 35d. Connection ports 54a to 54d are provided. The center of the lower blanket 50 is penetrated, and cylindrical press members 55 and 56 of a predetermined height are provided inside the lower blanket 50 at a position centered on the center through hole and on the inner wall of the hollow container. It is provided. Further, a rotational drive source 57 is attached to the lower side of the lower blanket 50, and rotation from this rotational drive source 57 is applied to a rotation shaft 60 passing through the through hole and the inside of the cylindrical holding member 55 via a gear 58. It is configured to communicate. In the hollow container 52, an opening/closing plate 61 having a notch of 270 degrees, for example, is rotatably attached to the rotating shaft 60, and when the opening/closing plate 61 is rotated, the connecting ports 54a to
It is configured to contact the inner protruding portions 622 to 62d of 54d in a sealed state to create a so-called valve closed state.
従って、以上のような構成によれば、回転駆動源５７を
所定時間ごとに回転させて開閉板６１を８０°ずつ回転
させると、各接続口５４ａ〜５４ｄが順次閉成され、第
１図および第２図と同様に原因液の限外ろ過膜モジュー
ル３５ａ〜３５ｄへの原液流通経路が閉じ、限外ろ過膜
モジュール３５ａ〜３５ｄにおいてろ液と原液との浸透
圧力の差を利用してケーキ層を膨化させることができる
。しかも、この装置では個別に開閉弁４１ａ〜４１ｄを
設ける必要がなく、分配機構３４と一体化を図ることに
より、装置全体の小形化を図ることができる。Therefore, according to the above configuration, when the rotary drive source 57 is rotated at predetermined time intervals and the opening/closing plate 61 is rotated by 80 degrees, each of the connection ports 54a to 54d is sequentially closed, and as shown in FIGS. Similarly to FIG. 2, the raw solution distribution path of the causative liquid to the ultrafiltration membrane modules 35a to 35d is closed, and the ultrafiltration membrane modules 35a to 35d use the difference in osmotic pressure between the filtrate and the raw solution to form a cake layer. can be expanded. Moreover, in this device, there is no need to provide separate on-off valves 41a to 41d, and by integrating them with the distribution mechanism 34, the entire device can be made smaller.
その他、本発明はその要旨を逸脱しない範囲で種々変形
して実施できる。In addition, the present invention can be implemented with various modifications without departing from the gist thereof.
［発明の効果コ
以上説明したように本発明によれば次に述べるような種
々の効果を奏する。[Effects of the Invention] As explained above, the present invention provides various effects as described below.
先ず、請求項第１項においては、従来のようにスポンジ
ボールを用いることなく通常の弁制御によって行うので
、限外ろ過膜モジュールの形状に影響させずにケーキ層
を除去でき、しかも点検・保守等を兼ねて限外ろ過膜モ
ジュールの再生化を図ることができ、また従来に比し弁
の使用個数も大幅に減らすことができる。First of all, in claim 1, the cake layer can be removed without affecting the shape of the ultrafiltration membrane module, and inspection and maintenance are possible because the removal is performed by normal valve control without using a sponge ball as in the past. The ultrafiltration membrane module can be regenerated, and the number of valves used can be significantly reduced compared to the conventional method.
次に、請求項第２項については、分配機構と開閉機構の
一体化構造により装置全体の小形化を図ることができ、
通常使用する開閉弁を用いることなく実現できる。Next, regarding claim 2, the entire device can be miniaturized by the integrated structure of the distribution mechanism and the opening/closing mechanism,
This can be achieved without using normally used on-off valves.
第１図ないし第４図は本発明装置の一実施例を説明する
ために示したもので、第１図は装置全体の構成図、第２
図は限外ろ過膜モジュールの構成図、第３図は開閉機構
の一興体例図、第４図は限外ろ過膜モジュールの洗浄時
間とろ過量との関係図、第５図は本発明装置における分
配機構と開閉機構とを一体構造とした他の実施例を示す
構成図、第６図は従来のろ過装置の構成図である。
３２・・・原液、３４・・・分配装置、３５ａ〜３５ｄ
・・・限外ろ過膜モジュール、３９・・・ＵＦ膜、４１
・・・開閉機構、４１ａ〜４１ｄ・・・開閉弁、４２・
・・ろ液流通管路、４６・・・濃縮液流通管路、５０・
・・下側ブランケット、５１・・・上側プランケット、
５２・・・中空容器、５３・・・原液導入口、５４ａ〜
５４ｄ・・・接続口、５７・・・回転駆動源、６１・・
・開閉板。
出願人代理人 弁理士 鈴江武彦
第１図
濃縮雇
介
？時間
第
図1 to 4 are shown to explain one embodiment of the device of the present invention, and FIG. 1 is a configuration diagram of the entire device, and FIG.
The figure is a configuration diagram of an ultrafiltration membrane module, Figure 3 is an example of an opening/closing mechanism, Figure 4 is a diagram of the relationship between cleaning time and filtration amount of an ultrafiltration membrane module, and Figure 5 is a diagram of the system of the present invention. FIG. 6 is a block diagram showing another embodiment in which the distribution mechanism and the opening/closing mechanism are integrated, and FIG. 6 is a block diagram of a conventional filtration device. 32...Standard solution, 34...Distribution device, 35a to 35d
...Ultrafiltration membrane module, 39...UF membrane, 41
... Opening/closing mechanism, 41a to 41d... Opening/closing valve, 42.
...filtrate distribution pipe, 46...concentrate distribution pipe, 50.
...lower blanket, 51...upper plunket,
52... Hollow container, 53... Stock solution inlet, 54a~
54d...Connection port, 57...Rotary drive source, 61...
・Opening/closing plate. Applicant's agent Patent attorney Takehiko Suzue Figure 1 concentrated employment agency? time chart
Claims (3)
ジュールへ分配導入してろ過するろ過装置において、 前記分配機構と限外ろ過膜モジュールとの間に各限外ろ
過膜モジュールへの原液導入流路を閉じる開閉機構を設
け、この開閉機構による原液導入流路の閉時に前記ろ液
と前記原液との浸透圧の差を利用して限外ろ過膜モジュ
ール内に堆積する原液固形分のケーキ層を膨化すること
により、前記開閉機構による原液導入流路の開時に導入
される原液の流れで膨化したケーキ層を除去することを
特徴とするろ過装置。(1) In a filtration device that distributes and introduces an inflow stock solution into a plurality of ultrafiltration membrane modules using a distribution mechanism for filtration, there is a connection between the distribution mechanism and the ultrafiltration membrane module to each ultrafiltration membrane module. An opening/closing mechanism for closing the stock solution introduction channel is provided, and when the stock solution introduction channel is closed by this opening/closing mechanism, the solid content of the stock solution is deposited in the ultrafiltration membrane module by utilizing the difference in osmotic pressure between the filtrate and the stock solution. A filtration device characterized in that the expanded cake layer is removed by the flow of the stock solution introduced when the stock solution introduction channel is opened by the opening/closing mechanism.
の原液導入流路を所定の時間ごとに順次所定の順序で閉
じることを特徴とする請求項第１項記載のろ過装置。(2) The filtration device according to claim 1, wherein the opening/closing mechanism sequentially closes the stock solution introduction channels to the plurality of ultrafiltration membrane modules at predetermined time intervals in a predetermined order.
を着脱自在に接合してなる中空容器内に前記原液の流入
口および前記複数の限外ろ過膜モジュールへ連通する接
続口を設け、回転駆動源によって開閉板を回転させて前
記複数の接続口を順次閉じるようにしたことを特徴とす
る請求項第１項記載のろ過装置。(3) The distribution mechanism and the opening/closing mechanism are provided with an inlet for the stock solution and a connection port communicating with the plurality of ultrafiltration membrane modules in a hollow container formed by removably joining two blankets, and a rotary drive source. 2. The filtration device according to claim 1, wherein the plurality of connection ports are sequentially closed by rotating the opening/closing plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1053184A JPH0817924B2 (en) | 1989-03-06 | 1989-03-06 | Filtration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1053184A JPH0817924B2 (en) | 1989-03-06 | 1989-03-06 | Filtration device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02233125A true JPH02233125A (en) | 1990-09-14 |
| JPH0817924B2 JPH0817924B2 (en) | 1996-02-28 |
Family
ID=12935789
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1053184A Expired - Lifetime JPH0817924B2 (en) | 1989-03-06 | 1989-03-06 | Filtration device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0817924B2 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018153168A (en) * | 2017-03-21 | 2018-10-04 | 国立大学法人九州大学 | Microorganism collection device |
| CN114053878A (en) * | 2021-11-25 | 2022-02-18 | 山东省舜天化工集团有限公司 | Method and equipment for treating melamine wastewater by using ultrafiltration membrane |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53102281A (en) * | 1977-01-14 | 1978-09-06 | Ebara Infilco Co Ltd | Separating method with membrane |
-
1989
- 1989-03-06 JP JP1053184A patent/JPH0817924B2/en not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS53102281A (en) * | 1977-01-14 | 1978-09-06 | Ebara Infilco Co Ltd | Separating method with membrane |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2018153168A (en) * | 2017-03-21 | 2018-10-04 | 国立大学法人九州大学 | Microorganism collection device |
| CN114053878A (en) * | 2021-11-25 | 2022-02-18 | 山东省舜天化工集团有限公司 | Method and equipment for treating melamine wastewater by using ultrafiltration membrane |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0817924B2 (en) | 1996-02-28 |
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