JPH0810579A - Filtration method and device therefor - Google Patents
Filtration method and device thereforInfo
- Publication number
- JPH0810579A JPH0810579A JP14637294A JP14637294A JPH0810579A JP H0810579 A JPH0810579 A JP H0810579A JP 14637294 A JP14637294 A JP 14637294A JP 14637294 A JP14637294 A JP 14637294A JP H0810579 A JPH0810579 A JP H0810579A
- Authority
- JP
- Japan
- Prior art keywords
- filter
- pump
- filtered water
- filtered
- valve
- 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
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、ろ過方法およびろ過装
置に関し、さらに詳しくは多孔質ろ過膜を利用するろ過
方法およびろ過装置に関する。ここに利用する多孔質ろ
過膜は、精密ろ過膜や限外ろ過膜として使用されている
孔径が１ｎｍ〜２０μｍ程度の多孔質多孔質膜のことを
いう。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filtration method and a filtration device, and more particularly to a filtration method and a filtration device using a porous filtration membrane. The porous filtration membrane used here is a porous porous membrane having a pore size of about 1 nm to 20 μm, which is used as a microfiltration membrane or an ultrafiltration membrane.
【０００２】[0002]
【従来の技術】従来、前記のろ過器に原水を供給してろ
過するのに、ろ過器の上流側、すなわち、原水供給側に
ポンプを設け、加圧下にろ過を行っていた。図２に、従
来の多孔質ろ過膜を用いたろ過システムの基本的な一例
をフローシートで示す。図を参照して、従来の多孔質ろ
過膜を用いたろ過方法およびろ過装置を簡単に説明す
る。多孔質ろ過膜を用いたろ過器２１の上流側、原水貯
槽２２との間に原水ポンプ２３を設け、原水をろ過器２
１に送入し、原水ポンプ２３の吐出圧力で多孔質ろ過膜
を通過させてろ過し、ろ過水貯槽２４に送入していた。
そして、ろ過器２１の下流側には逆洗用のポンプ２５を
設け、分離した固形物などでろ過膜が目詰まりしてくる
と、ポンプ２３による原水供給を停止し、逆洗ポンプ２
５を起動して、ろ過水貯槽２４のろ過水をろ過器２１の
ろ過水出口側に逆に送入し、多孔質ろ過膜を逆洗し、そ
の排水を排出管２６から系外に排出していた。2. Description of the Related Art Conventionally, in order to supply and filter raw water to the above-mentioned filter, a pump is provided on the upstream side of the filter, that is, the raw water supply side, and filtration is carried out under pressure. FIG. 2 is a flow sheet showing a basic example of a conventional filtration system using a porous filtration membrane. A filtration method and a filtration device using a conventional porous filtration membrane will be briefly described with reference to the drawings. A raw water pump 23 is provided between the raw water storage tank 22 and the upstream side of the filter 21 using the porous filtration membrane to filter the raw water.
1, was filtered by passing through the porous filtration membrane with the discharge pressure of the raw water pump 23, and was fed to the filtered water storage tank 24.
Then, a backwash pump 25 is provided on the downstream side of the filter 21, and when the separated solids or the like clog the filtration membrane, the raw water supply by the pump 23 is stopped, and the backwash pump 2
5, the filtered water in the filtered water storage tank 24 is sent in reverse to the filtered water outlet side of the filter 21, the porous filtration membrane is backwashed, and the drainage thereof is discharged from the discharge pipe 26 to the outside of the system. Was there.
【０００３】[0003]
【発明が解決しようとする課題】技術が、より単純な装
置、より簡単な操作を追及することは、ろ過においても
例外ではない。本発明は、単純、コンパクト、故障の少
ない装置を用い、簡単に操作できる多孔質ろ過膜を用い
たろ過方法を目的に完成されたものである。The pursuit of simpler devices and easier operation is no exception in filtration. The present invention has been completed for the purpose of providing a filtration method using a porous filtration membrane which is simple, compact, and has few troubles and which can be easily operated.
【０００４】[0004]
【課題を解決するための手段】本発明は、前記の目的を
達成するために、多孔質ろ過膜を用いたろ過器とポンプ
とを用いて原水を減圧ろ過し、前記のポンプと洗浄水と
を用いてろ過器を加圧逆洗することを特徴とするろ過方
法を提供する。[Means for Solving the Problems] In order to achieve the above-mentioned object, the present invention performs vacuum filtration of raw water using a filter using a porous filtration membrane and a pump, and There is provided a filtration method characterized in that the filter is backwashed under pressure with.
【０００５】このろ過方法の好ましい実施態様例とし
て、多孔質ろ過膜を用いたろ過器のろ過水出口側にポン
プを設け、ポンプの吸込側とろ過器のろ過水出口側およ
び洗浄水供給配管とをそれぞれ弁を介して接続し；ポン
プの吐出側とろ過器のろ過水出口側およびろ過水配管と
をそれぞれ弁を介して接続し；原水のろ過サイクルで
は、ポンプの吸込側とろ過器のろ過水出口側との間の弁
を開き、洗浄水供給配管との間の弁を閉じ、吐出側とろ
過水配管との間の弁を開き、ろ過器のろ過水出口側との
間の弁を閉じ、ポンプによって、ろ過器の原水入口側か
ら原水を吸込んでろ過し、得られたろ過水を吐出側から
所望の行先に送水し；ろ過器の逆洗サイクルでは、ポン
プの吸込側とろ過器のろ過水出口側との間の弁を閉じ、
洗浄水供給配管との間の弁を開き、吐出側とろ過水配管
との間の弁を閉じ、ろ過器のろ過水出口側との間の弁を
開き、ポンプによって、洗浄水供給配管から洗浄水を吸
込み、吐出側からろ過器のろ過水出口側に送水して多孔
質ろ過膜を逆洗し、原水入口側から排水を系外に排出す
る方法をあげることができる。As a preferred embodiment of this filtration method, a pump is provided on the filtered water outlet side of the filter using the porous filtration membrane, and the suction side of the pump, the filtered water outlet side of the filter and the washing water supply pipe are provided. , Respectively, through the valve; the discharge side of the pump, the filtered water outlet side of the filter and the filtered water pipe are respectively connected through valves; in the raw water filtration cycle, the suction side of the pump and the filtration of the filter are connected. Open the valve to the water outlet side, close the valve to the wash water supply pipe, open the valve to the discharge side and the filtered water pipe, and open the valve to the filtered water outlet side of the filter. Close and pump the raw water from the raw water inlet side of the filter by the pump to filter the obtained filtered water from the discharge side to the desired destination; in the backwash cycle of the filter, the suction side of the pump and the filter Close the valve between the filtered water outlet side of
Open the valve between the cleaning water supply pipe, close the valve between the discharge side and the filtered water pipe, open the valve between the filtered water outlet side of the filter, and wash from the cleaning water supply pipe by the pump. A method of sucking water, sending it from the discharge side to the filtered water outlet side of the filter to backwash the porous filtration membrane, and discharging the drainage from the raw water inlet side to the outside of the system can be mentioned.
【０００６】また、多孔質ろ過膜を用いたろ過器とろ過
器のろ過水出口側に設けたポンプとを含み、ポンプの吸
込側とろ過器のろ過水出口側および洗浄水供給配管とが
それぞれ弁を介して接続され、ポンプの吐出側とろ過器
のろ過水出口側およびろ過水配管とがそれぞれ弁を介し
て接続され、ろ過器の原水入口側には、弁を介して逆洗
排水の排出管が接続されていることを特徴とするろ過装
置を提供する。上記の弁は二方弁に限られず三方弁など
を用いてもよい。Further, it includes a filter using a porous filtration membrane and a pump provided on the filtered water outlet side of the filter, and the suction side of the pump, the filtered water outlet side of the filter and the washing water supply pipe are respectively provided. Connected via a valve, the discharge side of the pump, the filtered water outlet side of the filter and the filtered water piping are connected via a valve respectively, and the raw water inlet side of the filter is connected to the backwash drainage through the valve. Provided is a filtration device having a discharge pipe connected thereto. The above valve is not limited to a two-way valve, and a three-way valve or the like may be used.
【０００７】[0007]
【実施態様例と作用】以下、本発明のろ過方法およびろ
過装置を、実施態様例をあげつつ、図面を参照して説明
する。図１は、本発明の好ましい実施態様例を示す概略
フローシートである。本発明は、多孔質の多孔質ろ過膜
を利用したろ過器１を使用するろ過方法であって、多孔
質ろ過膜としては、いわゆる精密ろ過膜や限外ろ過膜を
含む。一般的に、孔径が０．０１〜２０μｍの多孔質膜
を使用する場合を精密ろ過と称している。精密ろ過膜に
使用する膜としては、酢酸セルロースなどのセルロース
誘導体、ポリスルホン、ポリ塩化ビニル、アクリル樹
脂、ポリ４フッ化エチレン、ポリプロピレンなどの有機
高分子や多孔性セラミックなどの多孔質膜があげられ
る。これらの多孔質膜は、プリーツ状にして支持材とと
もにスパイラルに巻いたカートリッジ型や、中空糸束型
などにすることができるが、実施環境の条件に応じてい
ずれの形態でも選択することができる。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments and Functions The filtration method and filtration apparatus of the present invention will be described below with reference to the drawings, while showing embodiments. FIG. 1 is a schematic flow sheet showing a preferred embodiment of the present invention. The present invention is a filtration method that uses a filter 1 that uses a porous porous filtration membrane, and includes so-called microfiltration membranes and ultrafiltration membranes as the porous filtration membrane. Generally, the case of using a porous membrane having a pore size of 0.01 to 20 μm is called microfiltration. Membranes used for microfiltration membranes include cellulose derivatives such as cellulose acetate, organic polymers such as polysulfone, polyvinyl chloride, acrylic resin, polytetrafluoroethylene and polypropylene, and porous membranes such as porous ceramics. . These porous membranes can be made into a pleated shape, such as a cartridge type spirally wound with a support material, a hollow fiber bundle type, or the like, but any form can be selected according to the conditions of the implementation environment. .
【０００８】限外ろ過膜は、一般的に、孔径が１〜１０
4 ｎｍの多孔質ろ過膜を指し、例えば、原水中のコロイ
ド粒子やそれに近いタンパク質を除去する場合に使用す
る。限外ろ過膜には、ポリアクリロニトリル、ポリスル
ホンなどの有機系の膜、グラファイトや多孔性セラミッ
クスを用いる無機系の膜などを使用することができる。
モジュールの形状や流通方式などは、前記の精密ろ過工
程に準ずる。本発明に使用するポンプ３は、十分なろ過
圧を付与するために吸込圧力の大きいポンプを採用す
る。Ultrafiltration membranes generally have a pore size of 1-10.
This refers to a 4 nm porous filtration membrane, and is used, for example, to remove colloidal particles in raw water and proteins close thereto. As the ultrafiltration membrane, an organic membrane such as polyacrylonitrile or polysulfone, an inorganic membrane using graphite or porous ceramics, or the like can be used.
The shape and distribution method of the module conforms to the above-mentioned microfiltration step. The pump 3 used in the present invention employs a pump having a large suction pressure in order to give a sufficient filtration pressure.
【０００９】さて、本発明においては、ろ過器１の下流
側、すなわち、ろ過水出口側にろ過圧力を付与するため
のポンプ３を設け、ポンプ３を用いて原水貯槽２などか
ら原水を吸引し、ろ過器１において減圧ろ過し、ろ過水
をろ過水貯槽４などに送入する。ろ過器１が目詰まりし
てくると、ポンプ３を用い、ろ過水貯槽４などの浄水を
ろ過器１の下流側、すなわち、ろ過水出口側から逆にろ
過器１に送入し、多孔質膜を洗浄し、目詰まりを除去す
る。In the present invention, a pump 3 for applying a filtration pressure is provided on the downstream side of the filter 1, that is, the filtered water outlet side, and the pump 3 is used to suck the raw water from the raw water storage tank 2 or the like. Then, it is filtered under reduced pressure in the filter 1 and the filtered water is fed into the filtered water storage tank 4 or the like. When the filter 1 becomes clogged, the pump 3 is used to pump purified water such as the filtered water storage tank 4 into the filter 1 from the downstream side of the filter 1, that is, from the filtered water outlet side, and the porous The membrane is washed to remove clogging.
【００１０】本発明のろ過方法の好ましい実施態様例を
説明する。本実施態様例では、弁に三方弁を使用してい
る。ポンプ３の吸込側とろ過器１のろ過水出口側および
洗浄水供給配管７とを三方弁５を介して接続し、吐出側
はろ過水貯槽およびろ過器１のろ過水出口側とを三方弁
６を介して接続している。まず、原水のろ過サイクルで
は、三方弁５を操作し、ろ過器１の処理水出口側とポン
プ３の吸込側との間を開き、洗浄水供給配管７との間を
閉じ、三方弁６を操作し、ポンプ３の吐出側とろ過水貯
槽４との間を開き、ろ過器１のろ過水出口側との間を閉
じる。ポンプ３を作動し、原水貯槽２から原水をろ過器
１の原水入口側に吸込んでろ過し、得られたろ過水を吐
出側からろ過水貯槽４に送水する。この際、原水入口側
の排水配管７は閉じておく。A preferred embodiment of the filtration method of the present invention will be described. In this embodiment, a three-way valve is used as the valve. The suction side of the pump 3, the filtered water outlet side of the filter 1 and the wash water supply pipe 7 are connected via a three-way valve 5, and the discharged side is a filtered water storage tank and the filtered water outlet side of the filter 1 with a three-way valve. It is connected via 6. First, in the raw water filtration cycle, the three-way valve 5 is operated to open the space between the treated water outlet side of the filter 1 and the suction side of the pump 3, close the space between the wash water supply pipe 7 and the three-way valve 6. It is operated to open between the discharge side of the pump 3 and the filtered water storage tank 4, and close between the filtered water outlet side of the filter 1. The pump 3 is operated, the raw water is sucked from the raw water storage tank 2 to the raw water inlet side of the filter 1 to be filtered, and the obtained filtered water is sent from the discharge side to the filtered water storage tank 4. At this time, the drainage pipe 7 on the raw water inlet side is closed.
【００１１】ろ過器１の逆洗サイクルの場合には、三方
弁５のろ過器１のろ過水水出口側とポンプの吸入側との
間を閉じ、ろ過水貯槽４との間を開き、三方弁６のポン
プ３の吐出側とろ過器１の処理水出口側との間を開き、
ろ過水貯槽４との間を閉じ、ポンプ３を用い、吸入側か
ら洗ろ過水を吸込み、吐出側からろ過器１のろ過水出口
側に送水して多孔質ろ過膜を逆洗し、原水入口側の排水
配管７から排水を系外に排出する。これらの一連の操作
は、一定時間ごとの自動切替にしておくとよい。また、
本発明の多孔質ろ過膜を用いたろ過装置は、砂ろ過装置
や逆浸透膜装置などの他の浄水装置と組合わせて用いる
ことができる。In the case of the backwash cycle of the filter 1, the three way valve 5 is closed between the filtered water outlet side of the filter 1 and the suction side of the pump, and is opened between the filtered water storage tank 4 and the three-way valve. Open between the discharge side of the pump 3 of the valve 6 and the treated water outlet side of the filter 1,
The gap between the filtered water storage tank 4 and the filtered water storage tank 4 is closed, the filtered filtered water is sucked in from the suction side, and is sent from the discharge side to the filtered water outlet side of the filter 1 to backwash the porous filtration membrane and the raw water inlet. The drainage is discharged from the drainage pipe 7 on the side to the outside of the system. The series of operations may be automatically switched at regular intervals. Also,
The filtration device using the porous filtration membrane of the present invention can be used in combination with other water purification devices such as a sand filtration device and a reverse osmosis membrane device.
【００１２】[0012]
【発明の効果】本発明の多孔質ろ過膜を用いたろ過方法
およびろ過装置を利用すると、従来必要であった２台の
ポンプが１台で済み、設備費が軽減され、装置はコンパ
クトに構成することができる。操作は簡易である。EFFECTS OF THE INVENTION By using the filtration method and the filtration device using the porous filtration membrane of the present invention, only two pumps, which are conventionally required, can be used, the facility cost can be reduced, and the device can be constructed compactly. can do. The operation is simple.
【図１】 本発明の好ましい実施態様例を示す概略フロ
ーシート。FIG. 1 is a schematic flow sheet showing a preferred embodiment of the present invention.
【図２】 従来の多孔質ろ過膜を用いたろ過装置の基本
的な一例を示す概略フローシート。FIG. 2 is a schematic flow sheet showing a basic example of a filtration device using a conventional porous filtration membrane.
１：ろ過器 ２：原水貯槽 ３：ポンプ ４：ろ過水貯槽 ５：ポンプ吸込側三方弁 ６：ポ
ンプ吐出側三方弁 ７：排水配管 ２１：ろ過器 ２２：原水貯槽 ２３：原水ポンプ ２４：ろ過水貯槽 ２５：逆洗ポンプ ２６：排水
排出管1: Filter 2: Raw water storage tank 3: Pump 4: Filtered water storage tank 5: Pump suction side three-way valve 6: Pump discharge side three-way valve 7: Drainage pipe 21: Filter 22: Raw water storage tank 23: Raw water pump 24: Filtered water Storage tank 25: Backwash pump 26: Waste water discharge pipe
Claims (3)
用いて原水を減圧ろ過し、前記のポンプと洗浄水とを用
いてろ過器を加圧逆洗することを特徴とするろ過方法。1. A filtration characterized in that raw water is filtered under reduced pressure using a filter using a porous filtration membrane and a pump, and the filter is backwashed under pressure using the pump and washing water. Method.
側にポンプを設け、ポンプの吸込側とろ過器のろ過水出
口側および洗浄水供給配管とをそれぞれ弁を介して接続
し、 ポンプの吐出側とろ過器のろ過水出口側およびろ過水配
管とをそれぞれ弁を介して接続し、 原水のろ過サイクルでは、ポンプの吸込側とろ過器のろ
過水出口側との間の弁を開き、洗浄水供給配管との間の
弁を閉じ、吐出側とろ過水配管との間の弁を開き、ろ過
器のろ過水出口側との間の弁を閉じ、ポンプによって、
ろ過器の原水入口側から原水を吸込んでろ過し、得られ
たろ過水を吐出側から所望の行先に送水し、 ろ過器の逆洗サイクルでは、ポンプの吸込側とろ過器の
ろ過水出口側との間の弁を閉じ、洗浄水供給配管との間
の弁を開き、吐出側とろ過水配管との間の弁を閉じ、ろ
過器のろ過水出口側との間の弁を開き、ポンプによっ
て、洗浄水供給配管から洗浄水を吸込み、吐出側からろ
過器のろ過水出口側に送水して多孔質ろ過膜を逆洗し、
原水入口側から排水を系外に排出する、ことを特徴とす
るろ過方法。2. A pump is provided on the filtered water outlet side of a filter using a porous filtration membrane, and the suction side of the pump, the filtered water outlet side of the filter and the washing water supply pipe are connected via valves, respectively. , The discharge side of the pump, the filtered water outlet side of the filter and the filtered water pipe are connected via valves respectively, and in the raw water filtration cycle, the valve between the suction side of the pump and the filtered water outlet side of the filter is connected. Open, close the valve between the wash water supply pipe, open the valve between the discharge side and the filtered water pipe, close the valve between the filtered water outlet side of the filter, by the pump,
The raw water is sucked from the raw water inlet side of the filter to be filtered, the obtained filtered water is sent from the discharge side to the desired destination, and in the backwash cycle of the filter, the suction side of the pump and the filtered water outlet side of the filter The valve between the washing water supply pipe and the flush water supply pipe, the valve between the discharge side and the filtered water pipe, and the valve between the filtered water outlet side of the filter and the pump. , Sucks the wash water from the wash water supply pipe, sends it from the discharge side to the filtered water outlet side of the filter to backwash the porous filtration membrane,
The filtration method is characterized in that wastewater is discharged from the raw water inlet side to the outside of the system.
過水出口側に設けたポンプとを含み、 ポンプの吸込側とろ過器のろ過水出口側および洗浄水供
給配管とがそれぞれ弁を介して接続され、 ポンプの吐出側とろ過器のろ過水出口側およびろ過水配
管とがそれぞれ弁を介して接続され、 ろ過器の原水入口側には、弁を介して逆洗排水の排出管
が接続され、ていることを特徴とするろ過装置。3. A filter using a porous filtration membrane and a pump provided on the filtered water outlet side of the filter, wherein the suction side of the pump, the filtered water outlet side of the filter and the wash water supply pipe are respectively provided. Connected via a valve, the discharge side of the pump, the filtered water outlet side of the filter and the filtered water pipe are connected via a valve respectively, and the raw water inlet side of the filter is connected to the backwash drainage via the valve. A filtration device, to which a discharge pipe is connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14637294A JP3358300B2 (en) | 1994-06-28 | 1994-06-28 | Filtration method and filtration device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14637294A JP3358300B2 (en) | 1994-06-28 | 1994-06-28 | Filtration method and filtration device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0810579A true JPH0810579A (en) | 1996-01-16 |
| JP3358300B2 JP3358300B2 (en) | 2002-12-16 |
Family
ID=15406233
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14637294A Expired - Fee Related JP3358300B2 (en) | 1994-06-28 | 1994-06-28 | Filtration method and filtration device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3358300B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1063674C (en) * | 1996-08-16 | 2001-03-28 | 中国科学院生态环境研究中心 | Method and apparatus for using operating pump to negative pressure cleaning by semipermeable membrance |
| JP2001347268A (en) * | 2000-06-06 | 2001-12-18 | Mitsubishi Rayon Co Ltd | Water treatment equipment |
| KR100519680B1 (en) * | 2003-07-04 | 2005-10-11 | 지철권 | Water treatment apparatus having a back-wash type filter bath |
| CN103844904A (en) * | 2012-12-07 | 2014-06-11 | 中山东菱威力电器有限公司 | Filter control system for drinking fountain |
-
1994
- 1994-06-28 JP JP14637294A patent/JP3358300B2/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1063674C (en) * | 1996-08-16 | 2001-03-28 | 中国科学院生态环境研究中心 | Method and apparatus for using operating pump to negative pressure cleaning by semipermeable membrance |
| JP2001347268A (en) * | 2000-06-06 | 2001-12-18 | Mitsubishi Rayon Co Ltd | Water treatment equipment |
| KR100519680B1 (en) * | 2003-07-04 | 2005-10-11 | 지철권 | Water treatment apparatus having a back-wash type filter bath |
| CN103844904A (en) * | 2012-12-07 | 2014-06-11 | 中山东菱威力电器有限公司 | Filter control system for drinking fountain |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3358300B2 (en) | 2002-12-16 |
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