JPH0811227B2 - Water filtration equipment with permeable membrane and activated carbon - Google Patents
Water filtration equipment with permeable membrane and activated carbonInfo
- Publication number
- JPH0811227B2 JPH0811227B2 JP5044395A JP4439593A JPH0811227B2 JP H0811227 B2 JPH0811227 B2 JP H0811227B2 JP 5044395 A JP5044395 A JP 5044395A JP 4439593 A JP4439593 A JP 4439593A JP H0811227 B2 JPH0811227 B2 JP H0811227B2
- Authority
- JP
- Japan
- Prior art keywords
- permeable membrane
- activated carbon
- membrane
- carbon filter
- water
- 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
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
- Water Treatment By Sorption (AREA)
Description
【０００１】[0001]
【産業上の利用分野】この発明は、精密ろ過膜もしくは
限外ろ過膜を利用し、上水道用のろ過操作に関するもの
である。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a filtration operation for waterworks utilizing a microfiltration membrane or an ultrafiltration membrane.
【０００２】[0002]
【従来の技術】従来、精密ろ過膜、限外ろ過膜等の透過
膜を利用し、上水道用のろ過操作を行なおうと試みられ
てきた。これらの透過膜は、原水中の濁質を始めとする
懸濁性物質やコロイド状物質等非溶解性物質はほとんど
完全に除去できるが、臭気物質やアンモニア性窒素及び
陰イオン界面活性剤などの溶解性物質は殆ど除去できな
かった。2. Description of the Related Art Conventionally, it has been attempted to carry out a filtration operation for waterworks by utilizing a permeable membrane such as a microfiltration membrane or an ultrafiltration membrane. These permeable membranes can almost completely remove suspended substances such as suspended matter in raw water and insoluble substances such as colloidal substances, but can remove odorous substances, ammoniacal nitrogen and anionic surfactants. Almost no soluble material could be removed.
【０００３】一方、これら溶解性物質は、活性炭ろ過機
により除去できるが、活性炭ろ過機は長期間使用により
生物が繁殖し、活性炭ろ過機処理水に生物が漏出する危
険があった。On the other hand, although these soluble substances can be removed by an activated carbon filter, there is a risk that the activated carbon filter will proliferate due to long-term use and that the organism will leak to the activated carbon filter treated water.
【０００４】[0004]
【発明が解決しようとする課題】上記したように、溶解
性物質の殆どは活性炭ろ過機により除去できるが、活性
炭ろ過機は長期使用により生物が繁殖し、活性炭ろ過機
処理水に生物が漏出する危険性があり、また原水を活性
炭ろ過機に直接流入させ、その処理水を透過膜にかける
方式の場合、活性炭が濁質などの非溶解性物質により、
短期間にその除去能力を低下させてしまった。As described above, most of the soluble substances can be removed by the activated carbon filter, but the activated carbon filter causes the organisms to proliferate due to long-term use and leaks to the treated water of the activated carbon filter. There is a risk, and in the case of a method in which raw water directly flows into the activated carbon filter and the treated water is applied to the permeable membrane, the activated carbon is
It has reduced its removal capacity in a short period of time.
【０００５】[0005]
【課題を解決するための手段】ここにおいてこの発明
は、精密ろ過膜もしくは限外ろ過膜を使用した上水道用
ろ過機において、前段透過膜→密閉型活性炭ろ過機→後
段透過膜の順に直列接続すると共に、活性炭ろ過機透過
水に塩素系殺菌剤を注入することにより、原水を途中で
増圧することなく、前段透過膜で原水中の非溶解性物質
を除去し、活性炭ろ過機で前段透過膜ろ過水中の溶解性
物質を除去した後に、塩素系殺菌剤で滅菌し、後段透過
膜で活性炭ろ過機から漏出した生物を除去すると共に、
処理水に残留塩素を持たせることを特徴とする上水道用
ろ過装置を提案するものである。[Means for Solving the Problems] Here, in the present invention, in a water supply filter using a microfiltration membrane or an ultrafiltration membrane, a pre-stage permeable membrane → a closed activated carbon filter → a post-stage permeable membrane are connected in series in this order. At the same time, by injecting a chlorine-based sterilizer into the permeated water of the activated carbon filter, the insoluble material in the raw water is removed by the pre-stage permeable membrane without increasing the pressure of the raw water on the way, and the pre-stage permeable membrane filtration by the activated carbon filter is performed. After removing the soluble substances in the water, sterilize with a chlorine-based bactericide, and remove the organisms leaked from the activated carbon filter with the latter permeable membrane,
This is to propose a water supply filtration device characterized in that treated water has residual chlorine.
【０００６】[0006]
【作用】この発明において、活性炭ろ過機後に再度透過
膜を取り付けることにより、活性炭ろ過機からの漏出生
物を完壁に除去する。万一前段透過膜に破損等のトラブ
ルが発生し、非溶解性物質が漏出しても後段透過膜で捕
捉すると共に、活性炭ろ過機を密閉型とし、前段透過膜
及び後段透過膜と直結することにより、前段透過膜処理
水の残圧により活性炭ろ過機及び後段透過膜に必要な圧
力をまかない、各装置間に増圧ポンプを設置する必要が
なく、また活性炭ろ過機処理水に塩素系殺菌剤を注入す
ることにより後段透過膜への生物付着が軽減され、後段
透過膜のろ過抵抗の上昇をさらに軽減する。In the present invention, by attaching the permeable membrane again after the activated carbon filter, the leaked organisms from the activated carbon filter are completely removed. Even if a trouble such as breakage occurs in the front permeable membrane and the insoluble substance leaks out, it should be captured by the rear permeable membrane, and the activated carbon filter should be a closed type and be directly connected to the front and rear permeable membranes. This prevents the pressure required for the activated carbon filter and the downstream permeable membrane from being applied by the residual pressure of the treated water of the preceding stage permeable membrane, there is no need to install a pressure booster pump between each device, and the chlorinated germicide for the treated water of the activated carbon filter. By injecting, the biological attachment to the rear permeable membrane is reduced, and the increase in filtration resistance of the rear permeable membrane is further reduced.
【０００７】[0007]
【実施例】次にこの発明を図示の実施例にしたがって詳
細に説明する。The present invention will now be described in detail with reference to the illustrated embodiment.
【０００８】図１に示す実施例は、前段に分画分子量５
０，０００の限外ろ過膜を設置するとともに、繊維状活
性炭を用いた密閉型活性炭ろ過機を接続し、後段に０．
２μｍの精密ろ過膜を設置した場合である。The embodiment shown in FIG. 1 has a molecular weight cutoff of 5 in the preceding stage.
With an ultrafiltration membrane of 50,000 installed, a closed type activated carbon filter using fibrous activated carbon was connected, and at the latter stage of 0.
This is the case where a 2 μm microfiltration membrane is installed.
【０００９】原水は、原水管１を介して受水槽２に流入
し、この受水槽２内の原水は原水ポンプ３により前段透
過膜４に供給され、非溶解性物質を除去したのち、透過
水は配管５を経由して密閉型活性炭ろ過機６に圧送さ
れ、活性炭ろ過機６で溶解性物質を吸着もしくは生物処
理で除去し、しかる後、次亜塩素酸ナトリウム注入装置
２０により次亜塩素酸ナトリウムを注入され、後段透過
膜７に圧送される。Raw water flows into a water receiving tank 2 through a raw water pipe 1, and the raw water in the water receiving tank 2 is supplied to a front-stage permeable membrane 4 by a raw water pump 3 to remove insoluble substances and then the permeated water. Is pressure-fed to the closed type activated carbon filter 6 via the pipe 5, and the soluble substance is removed by adsorption or biological treatment by the activated carbon filter 6, and then the hypochlorous acid is injected by the sodium hypochlorite injection device 20. Sodium is injected and pressure-fed to the rear permeable membrane 7.
【００１０】後段透過膜７で、活性炭ろ過機６から漏出
する生物を始めとする浮遊物質を除去したのち、処理水
流出管８及び処理水量計９を経由して、残留塩素を含ん
だ飲料水が処理水槽１０に流出する。この場合、万一前
段透過膜４が破損して非溶解性物質が漏出しても、後段
透過膜７でこれを捕捉する。After the suspended matter including organisms leaking from the activated carbon filter 6 is removed by the rear permeable membrane 7, drinking water containing residual chlorine is passed through the treated water outflow pipe 8 and the treated water amount meter 9. Flows out into the treated water tank 10. In this case, even if the former permeable membrane 4 is damaged and the insoluble substance leaks, the latter permeable membrane 7 captures this.
【００１１】この状態を継続していると、前段透過膜４
及び後段透過膜７が目詰まりしてくるので、定期的に逆
流洗浄する。逆流洗浄は、逆流洗浄ポンプ１１を起動さ
せ、弁１２及び１５を閉め、弁１３及び１４を開けるこ
とにより、前段透過膜に付着した目詰まり物質を排水槽
１６に向けて流出させることによって行なわれる。If this state is continued, the front permeable membrane 4
Also, since the rear permeable membrane 7 becomes clogged, it is regularly backwashed. The backwashing is performed by activating the backwashing pump 11, closing the valves 12 and 15 and opening the valves 13 and 14 so that the clogging substances adhering to the front-stage permeable membrane flow out toward the drain tank 16. .
【００１２】密閉型ろ過機は吸着能力が低下したりろ過
差圧が上昇した場合、カートリッジ式に取り替える。後
段透過膜７も目詰まりしてきた場合、弁１８を閉め、弁
１７及び弁１９を開けることにより、後段透過膜７に付
着した目詰まり物質を、排水槽１６に向けて流出させ
る。前段透過膜４及び後段透過膜７とも、逆流洗浄水に
塩素を含んだ処理水を使用するため、透過膜面に付着し
た生物の剥離に効果がある。The closed type filter is replaced with a cartridge type when the adsorption capacity decreases or the filtration differential pressure increases. When the rear permeable membrane 7 is also clogged, the valve 18 is closed and the valves 17 and 19 are opened, so that the clogging substance attached to the rear permeable membrane 7 flows out toward the drain tank 16. Since both the front-stage permeable membrane 4 and the rear-stage permeable membrane 7 use the treated water containing chlorine as the backwash water, it is effective in removing the organisms attached to the permeable membrane surface.
【００１３】[0013]
【発明の効果】従来、上水道用に用いられる透過膜は膜
孔径０．２μｍ以下の精密ろ過膜もしくは限外ろ過膜が
多く、これらで透過すると原水中の非溶解性物質はほと
んど完全に除去できるが、臭気物質やアンモニア性窒素
及び陰イオン界面活性剤などの溶解性物質はほとんど除
去できなかった。一方、これら非溶解性物質は活性炭ろ
過機により除去できるものの、活性炭ろ過機は長期間使
用により生物が繁殖し、活性炭ろ過機処理水に生物が漏
出する危険性があったが、この発明では、活性炭ろ過機
後に再度透過膜を取り付けることにより、活性炭ろ過機
からの漏出生物を完壁に除去できるものである。EFFECTS OF THE INVENTION Conventionally, many permeable membranes used for waterworks are microfiltration membranes or ultrafiltration membranes having a membrane pore size of 0.2 μm or less, and when they are permeated, insoluble substances in raw water can be almost completely removed. However, odorous substances and soluble substances such as ammoniacal nitrogen and anionic surfactants could hardly be removed. On the other hand, although these non-dissolved substances can be removed by an activated carbon filter, the activated carbon filter proliferates due to long-term use, and there was a risk of the organism leaking to the activated carbon filter treated water, but in this invention, By attaching the permeable membrane again after the activated carbon filter, the leaked organisms from the activated carbon filter can be completely removed.
【００１４】万一前段透過膜に破損等のトラブルが発生
し、非溶解性物質が漏出しても後段透過膜にて捕捉でき
るので、高い安全性も具備することとなり、更に、活性
炭ろ過機を密閉型とし、前段透過膜及び後段透過膜と直
結することにより、前段透過膜処理水の残圧により活性
炭ろ過機及び後段透過膜に必要な圧力をまかなうことが
でき、各装置間に増圧ポンプを設置する必要がなく、経
済的である。また、活性炭ろ過機処理水に塩素系殺菌剤
を注入することにより後段透過膜への生物付着が軽減で
き、後段透過膜のろ過抵抗の上昇をさらに軽減すること
ができるという効果を奏するものである。Even if a trouble such as breakage occurs in the former permeable membrane and the insoluble substance leaks out, it can be captured by the latter permeable membrane, so that it is also provided with high safety. By making it a closed type and directly connecting it to the pre-permeation membrane and post-permeation membrane, the residual pressure of the pre-permeation membrane treated water can cover the pressure required for the activated carbon filter and the post-permeation membrane. It is economical because there is no need to install. Further, by injecting a chlorine-based bactericidal agent into the treated water of the activated carbon filter, it is possible to reduce biological adhesion to the rear permeable membrane, and it is possible to further reduce the increase in filtration resistance of the rear permeable membrane. .
【図１】この発明の一実施例の配管系統図である。FIG. 1 is a piping system diagram of an embodiment of the present invention.
４ 前段透過膜 ６ 密閉型活性炭ろ過機 ７ 後段透過膜 ２０ 次亜塩素酸ナトリウム注入装置（塩素系殺菌剤注
入装置）4 Front-stage permeable membrane 6 Closed-type activated carbon filter 7 Rear-stage permeable membrane 20 Sodium hypochlorite injection device (chlorine-based germicide injection device)
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平３−8488（ＪＰ，Ａ) 特開 平３−101814（ＪＰ，Ａ) ─────────────────────────────────────────────────── ─── Continuation of the front page (56) References JP-A-3-8488 (JP, A) JP-A-3-101814 (JP, A)
Claims (1)
た上水道用ろ過装置において、前段透過膜→密閉型活性
炭ろ過機→後段透過膜の順に直列接続すると共に、活性
炭ろ過機透過水に塩素系殺菌剤を注入することにより、
原水を途中で増圧することなく、前段透過膜で原水中の
非溶解性物質を除去し、活性炭ろ過機で前段透過膜ろ過
水中の溶解性物質を除去した後に、塩素系殺菌剤で滅菌
し、後段透過膜で活性炭ろ過機から漏出した生物を除去
すると共に、処理水に残留塩素を持たせること を特徴と
する上水道用ろ過装置。 1. A microfiltration membrane or an ultrafiltration membrane is used.
In a water supply filtration device, front-stage permeable membrane → closed-type active
Activated while connecting in series in the order of charcoal filter → rear permeable membrane
By injecting a chlorine-based germicide into the charcoal filter permeate,
Without increasing the pressure of the raw water on the way,
Removes insoluble substances and filters with an activated carbon filter in the previous stage permeation membrane
After removing soluble substances in water, sterilize with chlorine germicide
And remove the organisms leaked from the activated carbon filter with the latter permeable membrane
At the same time, the treated water has residual chlorine, which is a filtering device for waterworks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5044395A JPH0811227B2 (en) | 1993-02-10 | 1993-02-10 | Water filtration equipment with permeable membrane and activated carbon |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5044395A JPH0811227B2 (en) | 1993-02-10 | 1993-02-10 | Water filtration equipment with permeable membrane and activated carbon |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06233981A JPH06233981A (en) | 1994-08-23 |
| JPH0811227B2 true JPH0811227B2 (en) | 1996-02-07 |
Family
ID=12690327
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5044395A Expired - Lifetime JPH0811227B2 (en) | 1993-02-10 | 1993-02-10 | Water filtration equipment with permeable membrane and activated carbon |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0811227B2 (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| NL1017681C2 (en) * | 2001-03-23 | 2002-10-10 | Prime Water Systems Gmbh | Filter system. |
| FR2861604B1 (en) * | 2003-10-29 | 2007-02-16 | Millipore Corp | PURIFICATION MODULE OF A FLUID CONTAINING A CLEANING AGENT, AND METHODS OF MAKING AND USING SUCH A MODULE |
| JP5968592B2 (en) * | 2009-11-20 | 2016-08-10 | 三菱レイヨン株式会社 | Water purification system and operation method thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH038488A (en) * | 1989-06-07 | 1991-01-16 | Material Eng Tech Lab Inc | Water purifier |
| JPH03101814A (en) * | 1989-09-13 | 1991-04-26 | Material Eng Tech Lab Inc | Filter element and device |
-
1993
- 1993-02-10 JP JP5044395A patent/JPH0811227B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06233981A (en) | 1994-08-23 |
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