JPH0966296A - Water treatment method and apparatus - Google Patents
Water treatment method and apparatusInfo
- Publication number
- JPH0966296A JPH0966296A JP7225256A JP22525695A JPH0966296A JP H0966296 A JPH0966296 A JP H0966296A JP 7225256 A JP7225256 A JP 7225256A JP 22525695 A JP22525695 A JP 22525695A JP H0966296 A JPH0966296 A JP H0966296A
- Authority
- JP
- Japan
- Prior art keywords
- water
- filtration
- raw water
- reverse osmosis
- particle size
- 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
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】この発明は、高水質の純水、
とくに超純水を効率よく製造する水処理方法および水処
理装置に関する。TECHNICAL FIELD The present invention relates to pure water of high quality,
In particular, it relates to a water treatment method and a water treatment apparatus for efficiently producing ultrapure water.
【０００２】[0002]
【従来の技術】電子工業や製薬工業をはじめとする各種
産業においては高度の純水を大量に使用しているが、要
求される純水の水質は年々高度になり、需用量も年々大
きく増加している。これらの分野では、高水質の純水、
ことに超純水の製造には、ほとんどの場合、低分子化合
物や塩類を効率よく分離する能力のある逆浸透装置を使
用している。この他、逆浸透装置は、純水の循環利用、
造水などにも多数実用化されている。逆浸透装置が普及
するにつれ、さらに丈夫で高度の分離能を具備し、広い
用途に経済的に使用するための研究も進展した。すなわ
ち、新しい逆浸透膜や各種複合膜が開発され、分離膜の
使用形態、すなわちモジュールもスパイラル型、チュー
ブラ型など各種のものが実用化されている。2. Description of the Related Art A large amount of high-grade pure water is used in various industries such as the electronics industry and the pharmaceutical industry. The quality of pure water required is becoming higher year by year, and the demand volume is also increasing year by year. are doing. In these fields, high quality pure water,
In particular, in the production of ultrapure water, a reverse osmosis device capable of efficiently separating low-molecular compounds and salts is used in most cases. In addition to this, the reverse osmosis device uses the circulation of pure water,
It has been put to practical use in many areas such as water production. With the spread of reverse osmosis devices, research has been advanced to make them more durable and have a high degree of separation and to be economically used in a wide range of applications. That is, new reverse osmosis membranes and various composite membranes have been developed, and various types of separation membranes have been put into practical use, that is, modules such as spiral type and tubular type.
【０００３】一方、対象とする原水を、直接逆浸透膜モ
ジュールに供給すると、膜モジュール内部で、微粒子、
懸濁物、、藻類、微生物、ゴミ等により目づまりが生じ
やすくなり、膜面においてファウリングが生じ、膜の分
離性能を大きく低下させる要因となる。そこで、前処理
濾過として精密濾過膜や限外濾過膜、各種濾材等により
微粒子等の除去を行う場合が多い。また、０．１〜５μ
ｍくらいの懸濁粒子およびコロイドなどの不純物を含む
原水を逆浸透装置で処理する場合には、アルミニウムや
鉄イオンを含む電解質を凝集剤として原水に添加して微
粒子類を凝集させ、砂濾過法などを用いて凝集粒子をあ
らかじめ除去してから、被処理水を逆浸透装置に送る方
法が取られている。On the other hand, when the target raw water is directly supplied to the reverse osmosis membrane module, fine particles,
Clogging is likely to occur due to suspensions, algae, microorganisms, dust, etc., and fouling occurs on the membrane surface, which is a factor that greatly reduces the membrane separation performance. Therefore, as pretreatment filtration, fine particles and the like are often removed by a microfiltration membrane, an ultrafiltration membrane, various filter materials and the like. Also, 0.1-5μ
When treating raw water containing suspended particles and impurities such as colloids with a reverse osmosis device, an electrolyte containing aluminum and iron ions is added to the raw water as a flocculant to flocculate the fine particles, and then the sand filtration method is used. A method of sending the water to be treated to the reverse osmosis device after removing the agglomerated particles in advance by using a method such as
【０００４】[0004]
【発明が解決しようとする課題】上記のように前処理濾
過を行い、逆浸透装置の性能も向上して運転上のトラブ
ルも起こりにくくなり、安定して長期間使用できるよう
になった。By performing the pretreatment filtration as described above, the performance of the reverse osmosis device is improved, the troubles in operation are less likely to occur, and the stable and long-term use becomes possible.
【０００５】しかし、逆浸透装置に対して、さらに処理
水の連続安定供給、経済性向上などの要求もあり、本発
明者らはその課題を解決する手段を種々講じてきたが、
新しい逆浸透膜やモジュールの開発のほかにシステム全
体の構築を鋭意検討することによって課題の解決が図ら
れることを知った。したがって、本発明は、逆浸透装置
の長期安定操業、経済性向上などを目的に最も効率のよ
い水処理方法および水処理装置を提供せんとするもので
ある。However, the reverse osmosis device is also required to continuously and stably supply the treated water and to improve the economical efficiency, and the inventors have taken various measures to solve the problem.
I learned that the problems can be solved by diligently studying the construction of the entire system in addition to the development of new reverse osmosis membranes and modules. Therefore, the present invention aims to provide the most efficient water treatment method and water treatment device for the purpose of long-term stable operation of the reverse osmosis device, improvement in economic efficiency, and the like.
【０００６】[0006]
【課題を解決するための手段】上記の目的を達成する本
発明の構成は以下の通りである。すなわち、 （１） （イ）極細繊維の立毛を有する布帛を濾過材とする回転
ドラム型固液分離装置を用いて、原水中から、その原水
に含まれている、粒径が１μｍ〜１００μｍを越える不
純物を除去する工程と、（ロ）中空糸膜を濾過材とする
精密濾過装置を用いて、前記工程（イ）から得られる処
理水から、その処理水中に含まれている、粒径が０．０
１〜１０μｍを越える不純物を除去する工程と、（ハ）
逆浸透膜を濾過材とする濾過装置を用いて、前記工程
（ロ）から得られる処理水から、その処理水中に含まれ
ている不純物を除去する工程、を含むことを特徴とする
水処理方法。The structure of the present invention for achieving the above object is as follows. That is, (1) (a) using a rotary drum type solid-liquid separator using a cloth having naps of ultrafine fibers as a filtering material, from raw water, the particle size of 1 μm to 100 μm contained in the raw water is adjusted. Using the step (b) of removing excess impurities and (b) a microfiltration device having a hollow fiber membrane as a filtering material, the treated water obtained from the step (a) is treated to have a particle size of 0.0
A step of removing impurities exceeding 1 to 10 μm, and (c)
A method for treating water, comprising the step of removing impurities contained in the treated water from the treated water obtained in the step (b) using a filtration device having a reverse osmosis membrane as a filtering material. .
【０００７】（２） （イ）繊維を有孔芯に巻き付けてなるフィルターカート
リッジを濾過材とする濾過装置を用いて、原水中から、
その原水に含まれている、粒径が１μｍ〜１００μｍを
越える不純物を除去する工程と、（ロ）中空糸膜を濾過
材とする精密濾過装置を用いて、前記工程（イ）から得
られる処理水から、その処理水中に含まれている、粒径
が０．０１〜１０μｍを越える不純物を除去する工程
と、（ハ）逆浸透膜を濾過材とする濾過装置を用いて、
前記工程（ロ）から得られる処理水から、その処理水中
に含まれている不純物を除去する工程、を含むことを特
徴とする水処理方法。(2) (a) Using a filter device having a filter cartridge obtained by winding a fiber around a perforated core as a filtering material,
The process obtained from the above step (a) using a step of removing impurities contained in the raw water and having a particle size of more than 1 μm to 100 μm, and (b) a microfiltration device having a hollow fiber membrane as a filtering material. Using a step of removing impurities contained in the treated water, the particle size of which exceeds 0.01 to 10 μm, from the water, and (c) a filtration device having a reverse osmosis membrane as a filtering material,
A step of removing impurities contained in the treated water from the treated water obtained in the step (b).
【０００８】（３） （イ）中空糸膜を濾過材とする精密濾過装置を用いて、
原水中から、その原水に含まれている、粒径が０．０１
〜１０μｍを越える不純物を除去する工程と、（ロ）中
空糸膜を濾過材とする限外濾過装置を用いて、前記工程
（イ）から得られる処理水から、その処理水中に含まれ
ている、粒径が０．００１〜１μｍを越える不純物を除
去する工程と、（ハ）逆浸透膜を濾過材とする濾過装置
を用いて、前記工程（ロ）から得られる処理水から、そ
の処理水中に含まれている不純物を除去する工程、を含
むことを特徴とする水処理方法。(3) (a) Using a microfiltration device having a hollow fiber membrane as a filtering material,
From raw water, the particle size contained in the raw water is 0.01
A step of removing impurities exceeding 10 μm, and (b) using an ultrafiltration device having a hollow fiber membrane as a filtering material, from the treated water obtained in the step (a) to being contained in the treated water. A step of removing impurities having a particle size of more than 0.001 to 1 μm, and (c) using a filtration device having a reverse osmosis membrane as a filtering material, from the treated water obtained in the step (b) to the treated water. And a step of removing impurities contained in the water treatment method.
【０００９】（４） 工程（イ）の後に、活性炭を用い
た吸着処理を施すことを特徴とする前記（１）〜（３）
のいずれかに記載の水処理方法。(4) The above-mentioned (1) to (3), wherein after the step (a), an adsorption treatment using activated carbon is performed.
The water treatment method according to any one of 1.
【００１０】（５） 工程（イ）の前に、原水に砂濾過
による粗濾過を施すことを特徴とする前記（１）〜
（４）のいずれかに記載の水処理方法。(5) Before the step (a), the raw water is subjected to coarse filtration by sand filtration.
The water treatment method according to any one of (4).
【００１１】（６） 砂濾過による濾過水の生成処理の
前に、原水内の汚濁成分を凝集フロック化する凝集反応
を施すことを特徴とする前記（５）に記載の水処理方
法。(6) The water treatment method according to the above (5), characterized in that a coagulation reaction for coagulating flocculated pollutants in the raw water is carried out before the treatment for producing filtered water by sand filtration.
【００１２】（７） 回転ドラム型固液分離装置を用い
る工程（イ）の前に、原水内の汚濁成分を凝集フロック
化する凝集反応を施すことを特徴とする前記（１）また
は（４）に記載の水処理方法。(7) Before the step (a) using the rotary drum type solid-liquid separator, a flocculation reaction for flocculating the pollutant components in the raw water is performed, which is characterized in the above (1) or (4). The water treatment method described in.
【００１３】（８） 精密濾過装置および／または限外
濾過装置の中空糸膜濾過材を処理水を用いて逆洗するこ
とを特徴とする前記（１）〜（７）のいずれかに記載の
水処理方法。(8) The hollow fiber membrane filtering material of the microfiltration device and / or the ultrafiltration device is back-washed with treated water, according to any one of the above (1) to (7). Water treatment method.
【００１４】（９） 逆洗水を原水中に還流させること
を特徴とする前記（８）に記載の水処理方法。(9) The water treatment method as described in (8) above, wherein the backwash water is refluxed into the raw water.
【００１５】（１０） 工程（ハ）から得られる濃縮水
を原水中に還流させることを特徴とする前記（１）〜
（９）のいずれかに記載の水処理方法。(10) The concentrated water obtained from the step (c) is refluxed into the raw water, and the above (1) to
The water treatment method according to any one of (9).
【００１６】（１１） 原水導入管と、この原水導入管
に入側を接続して設けた、粒径が１μｍ以上の不純物を
除去する極細繊維の立毛を有する布帛を濾過材とする回
転ドラム型固液分離装置（１次）と、この回転ドラム型
固液分離装置の処理水出側に入側を接続して設けた、粒
径が０．０１以上の不純物を除去する中空糸膜を濾過材
とする精密濾過装置（２次）と、この精密膜濾過装置の
出側に入側を接続して設けた、逆浸透膜を濾過材とする
濾過装置とを備えていることを特徴とする水処理装置。(11) A rotary drum type using a raw water introducing pipe and a cloth having the naps of ultrafine fibers for removing impurities having a particle diameter of 1 μm or more, which is provided by connecting the inlet side of the raw water introducing pipe, as a filtering material. A solid-liquid separator (primary) and a hollow fiber membrane for removing impurities having a particle diameter of 0.01 or more, which is provided by connecting the inlet side to the treated water outlet side of the rotary drum type solid-liquid separator, are filtered. A microfiltration device (secondary) as a material, and a filtration device having a reverse osmosis membrane as a filtration material, which is provided by connecting the inlet side to the outlet side of the precision membrane filtration device. Water treatment equipment.
【００１７】（１２） 原水導入管と、この原水導入管
に入側を接続して設けた、粒径が１μｍ以上の不純物を
除去する繊維を有孔芯に巻き付けてなるフィルターカー
トリッジの濾過装置（１次）と、このフィルターカート
リッジの濾過装置の出側に入側を接続して設けた、粒径
が０．０１以上の不純物を除去する中空糸膜を濾過材と
する精密濾過装置（２次）と、この精密濾過装置の出側
に入側を接続して設けた、逆浸透膜を濾過材とする濾過
装置とを備えていることを特徴とする水処理装置。(12) A filter device for a filter cartridge (1) in which a raw water inlet pipe and fibers for removing impurities having a particle size of 1 μm or more, which are provided by connecting the inlet side of the raw water inlet pipe, are wound around a perforated core ( Primary) and a microfiltration device using a hollow fiber membrane for removing impurities having a particle size of 0.01 or more, which is provided by connecting the inlet side to the outlet side of the filter device of the filter cartridge (secondary) ) And a filtering device having a reverse osmosis membrane as a filtering material, which is provided by connecting the inlet side to the outlet side of the microfiltration device.
【００１８】（１３） 原水導入管と、この原水導入管
に入側を接続して設けた、粒径が０．０１以上の不純物
を除去する中空糸膜を濾過材とする精密濾過装置（１
次）と、この精密濾過装置の出側に入側を接続して設け
た、粒径が０．００１以上の不純物を除去する中空糸膜
を濾過材とする限外濾過装置（２次）と、この限外濾過
装置の出側に入側を接続して設けた、逆浸透膜を濾過材
とする濾過装置とを備えていることを特徴とする水処理
装置。(13) A microfiltration device using a raw water inlet pipe and a hollow fiber membrane provided with an inlet side connected to the raw water inlet pipe for removing impurities having a particle size of 0.01 or more as a filter medium (1
And the following), and an ultrafiltration device (secondary) using a hollow fiber membrane for removing impurities having a particle size of 0.001 or more, which is provided by connecting the inlet side to the outlet side of the microfiltration device (secondary). A water treatment device comprising: a filtration device having a reverse osmosis membrane as a filtering material, which is provided by connecting an inlet side to an outlet side of the ultrafiltration device.
【００１９】（１４） １次の分離または濾過装置の後
に、活性炭による吸着処理を施す活性炭吸着手段を付設
したことを特徴とする前記（１１）〜（１３）のいずれ
かに記載の水処理装置。(14) The water treatment apparatus according to any one of (11) to (13), characterized in that an activated carbon adsorbing means for adsorbing activated carbon is attached after the primary separation or filtration apparatus. .
【００２０】（１５） １次の分離または濾過装置の前
に、原水に砂濾過による粗濾過を施す粗濾過手段を付設
したことを特徴とする前記（１１）〜（１４）のいずれ
かに記載の水処理装置。(15) In any one of the above (11) to (14), before the primary separation or filtration device, a crude filtration means for performing crude filtration by sand filtration is attached to the raw water. Water treatment equipment.
【００２１】（１６） 砂濾過による粗濾過手段の前
に、原水内の汚濁成分を凝集フロック化する凝集反応処
理を施す凝集反応手段を付設したことを特徴とする前記
（１５）に記載の水処理装置。(16) The water according to the above (15), characterized in that a coagulation reaction means for performing a coagulation reaction treatment for coagulating flocs of pollutants in raw water is attached before the coarse filtration means by sand filtration. Processing equipment.
【００２２】（１７） 回転ドラム型固液分離装置の前
に、原水内の汚濁成分を凝集フロック化する凝集反応を
施す凝集反応手段を付設したことを特徴とする前記（１
１）または（１４）〜（１６）のいずれかに記載の水処
理装置。(17) In front of the rotary drum type solid-liquid separation device, an aggregating reaction means for performing an agglutination reaction for aggregating flocs of polluted components in raw water is attached.
1) or the water treatment device according to any one of (14) to (16).
【００２３】（１８） 精密濾過装置および／または限
外濾過装置は、処理水を用いて中空糸膜濾過材を逆洗す
る機構を備えたことを特徴とする前記（１１）〜（１
７）のいずれかに記載の水処理装置。(18) The microfiltration device and / or the ultrafiltration device is equipped with a mechanism for backwashing the hollow fiber membrane filtering material with treated water.
The water treatment device according to any one of 7).
【００２４】（１９） ２次の逆洗水を原水中に還流さ
せる配管を備えたことを特徴とする前記（１１）〜（１
７）のいずれかに記載の水処理装置。(19) The above-mentioned (11) to (1), characterized in that a pipe is provided for refluxing the secondary backwash water into the raw water.
The water treatment device according to any one of 7).
【００２５】（２０） ３次の逆浸透装置の濃縮水を原
水中に還流させる配管を備えている前記（１１）〜（１
９）のいずれかに記載の水処理装置。(20) The above (11) to (1), which is provided with a pipe for returning concentrated water of the third-order reverse osmosis device to raw water.
9. The water treatment device according to any one of 9).
【００２６】[0026]
【発明の実施の形態】以下、本発明をさらに詳しく説明
する。BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in more detail.
【００２７】（１）および（１１）の発明は、回転ドラ
ム型固液分離装置による濾過工程（装置）と、精密濾過
工程（装置）と、逆浸透工程（装置）を含む水処理方法
（装置）である。The inventions (1) and (11) are directed to a water treatment method (apparatus) including a filtration step (apparatus) using a rotary drum type solid-liquid separation apparatus, a microfiltration step (apparatus), and a reverse osmosis step (apparatus). ).
【００２８】回転ドラム型固液分離装置（１次）は、例
えば織物または編物の基材が起毛され、太さ０．０５〜
２０μｍなどの極細繊維の立毛が横たわって基材の表面
を覆ってなる濾過材を装着している。したがって、この
濾材は緻密な濾過層が形成され、１μｍ〜１００μｍ程
度の汚濁物質がこの緻密濾過層で好適に濾過分離され
る。In the rotary drum type solid-liquid separator (primary), for example, a woven or knitted base material is raised and a thickness of 0.05 to
A filter material is provided, in which napped fibers of ultrafine fibers such as 20 μm lie down and cover the surface of the base material. Therefore, this filter material forms a dense filter layer, and contaminants of about 1 μm to 100 μm are suitably filtered and separated by this dense filter layer.
【００２９】回転ドラム型固液分離装置は、例えば、特
開平７−１３６４１８号公報などに記載されたものが適
用できる。As the rotary drum type solid-liquid separator, for example, the one described in Japanese Patent Application Laid-Open No. 7-136418 can be applied.
【００３０】精密濾過装置（２次）は、糸の断面が中空
でその壁面に例えば、０．０１〜１μｍの孔が形成され
た中空糸を束ねたものを濾過材としている。したがっ
て、回転ドラム型固液分離装置（１次）で分離できなか
ったコンマμｍ程度の微細な汚濁物質が好適に濾過分離
される。なお、精密濾過装置（２次）に供給される水に
粗大な汚濁成分が含まれていると、中空糸膜精密濾過装
置の濾過材が目詰まりし易いが、本発明では、回転ドラ
ム型固液分離装置（１次）で１μｍ〜１００μｍ程度の
汚濁物質を濾過分離した後、精密濾過装置で濾過するの
で、精密濾過装置の濾過材は目詰まりし難い。つまり、
回転ドラム型固液分離装置（１次）は精密濾過装置（２
次）の保護と不純物の分離効率を高める作用を、精密濾
過装置（２次）はその次の逆浸透装置の保護と不純物の
分離効率を高める作用をする。The microfiltration device (secondary) uses as a filtering material a bundle of hollow fibers each having a hollow cross-section and a wall surface having pores of, for example, 0.01 to 1 μm. Therefore, fine contaminants of the order of comma μm, which could not be separated by the rotary drum type solid-liquid separator (primary), are preferably filtered and separated. If the water supplied to the microfiltration device (secondary) contains coarse pollutant components, the filter material of the hollow fiber membrane microfiltration device is likely to be clogged. Since the contaminants of about 1 μm to 100 μm are filtered and separated by the liquid separation device (primary) and then filtered by the microfiltration device, the filter material of the microfiltration device is unlikely to be clogged. That is,
The rotating drum type solid-liquid separation device (primary) is a precision filtration device (2
The microfiltration device (secondary) has a function of protecting the next reverse osmosis device and a function of increasing the separation efficiency of impurities.
【００３１】精密濾過装置は、特に逆浸透膜にトラブル
を引き起こしたり、透過効率を損なう藻類などの微生物
や粒径が１μｍ以下の懸濁粒子などを除去するのに有効
である。全濾過方式でもクロスフロー方式でもよいが逆
洗水または濃縮水は原水に還流することが好ましい。The microfiltration device is particularly effective for removing troubles in the reverse osmosis membrane and removing microorganisms such as algae which impair the permeation efficiency and suspended particles having a particle size of 1 μm or less. Although the whole filtration method or the cross flow method may be used, it is preferable that the backwash water or the concentrated water is refluxed to the raw water.
【００３２】逆浸透装置は、前記の濾過装置を通過し、
処理水中に残存する不純物、例えば溶解塩分や有機物な
どを分離する。逆浸透膜には酢酸セルロース系、ポリア
ミド系、ポリエチレンイミド系、ポリエチレンオキシド
系、ポリエーテル系などの非対象膜、複合膜を用いるこ
とができる。モジュールもスパイラル型、プリーツ型、
中空糸型など、いずれでもよい。The reverse osmosis device passes through the filtration device described above,
Impurities remaining in the treated water, such as dissolved salts and organic substances, are separated. As the reverse osmosis membrane, an asymmetric membrane such as a cellulose acetate type, a polyamide type, a polyethylene imide type, a polyethylene oxide type, a polyether type, or a composite membrane can be used. Module is also spiral type, pleated type,
Any such as a hollow fiber type may be used.
【００３３】（２）および（１２）の発明は、フィルタ
ーカートリッジ濾過工程（装置）と、精密濾過工程（装
置）と、逆浸透工程（装置）を含む水処理方法（装置）
であり、（１）（１１）の発明の、回転ドラム型固液分
離装置（１次）にかえてフィルターカートリッジ濾過工
程（装置）を採用した。The inventions (2) and (12) include a water treatment method (apparatus) including a filter cartridge filtration step (apparatus), a microfiltration step (apparatus), and a reverse osmosis step (apparatus).
Thus, the filter cartridge filtration step (apparatus) was adopted instead of the rotary drum type solid-liquid separation apparatus (primary) of the inventions (1) and (11).
【００３４】フィルターカートリッジ濾過装置（１次）
は、回転ドラム型固液分離装置（１次）と同様の作用を
なすもので、この濾過装置でも１μｍ〜１００μｍ程度
の汚濁物質が濾過分離される。Filter cartridge filtration device (primary)
Has a function similar to that of a rotary drum type solid-liquid separator (primary), and this filter also filters and separates contaminants of about 1 μm to 100 μm.
【００３５】フィルターカートリッジ濾過装置は、繊維
を有孔芯に巻き付けてなるフィルターカートリッジを濾
過材とする濾過装置を用いるものである。The filter cartridge filtering device uses a filtering device which uses a filter cartridge obtained by winding a fiber around a perforated core as a filtering material.
【００３６】（３）および（１３）の発明は、精密濾過
工程（装置）と、限外濾過工程（装置）と、逆浸透工程
（装置）を含む水処理方法（装置）であり、粗大な汚濁
成分が少ない水に適用されるものである。The inventions (3) and (13) are a water treatment method (apparatus) including a microfiltration step (apparatus), an ultrafiltration step (apparatus), and a reverse osmosis step (apparatus), which are coarse. It is applied to water with little pollutant.
【００３７】中空糸膜を濾過材とする限外濾過装置は、
糸の断面が中空で、例えば、その壁面に０．００１〜
０．０１μｍの孔が形成された中空糸を束ねたものを濾
材としたものであって、処理水にコロイド粒子やそれに
近いタンパク質など溶存高分子が多量に存在する場合
に、逆浸透装置の負荷を軽減し保護することができる。An ultrafiltration device using a hollow fiber membrane as a filtering material is
The thread has a hollow cross section, and for example, 0.001 to
A filter material is a bundle of hollow fibers having pores of 0.01 μm, and the load of the reverse osmosis device when the treated water contains a large amount of dissolved polymer such as colloidal particles or proteins close to the colloidal particles. Can be reduced and protected.
【００３８】（４）および（１４）の発明は、濾過装置
（１次）および濾過装置（２次）で除去し難い着色成分
や溶解成分を吸着除去するため、前記（１）〜（３）お
よび（１１）〜（１３）の発明における濾過装置（１
次）の後に、活性炭吸着手段を付設したものである。In the inventions (4) and (14), since the coloring component and the dissolved component which are difficult to remove by the filtering device (primary) and the filtering device (secondary) are adsorbed and removed, the above-mentioned (1) to (3) are adopted. And the filtration device (1 in the inventions of (11) to (13)
After the following), activated carbon adsorption means is attached.
【００３９】（５）および（１５）の発明は、粗大な汚
濁成分が多い水に適用されるもので、濾過装置（１次）
の負荷軽減と分離効率の向上を図るため、前記（１）〜
（３）および（１１）〜（１３）の発明における濾過装
置（１次）の前に、原水に砂濾過による粗濾過を施す粗
濾過手段を付設したものである。砂濾過は圧力式でも重
力式でもよく、通常、平均粒径が０．３〜３mmの濾材を
単層または多層にして使用する。The inventions of (5) and (15) are applied to water containing a large amount of coarse pollutant components.
In order to reduce the load and improve the separation efficiency of (1)-
Before the filtering device (primary) in the inventions of (3) and (11) to (13), a rough filtering means for rough filtering raw water by sand filtration is attached. The sand filtration may be a pressure type or a gravity type, and usually a filter medium having an average particle size of 0.3 to 3 mm is used in a single layer or multiple layers.
【００４０】なお、吸着処理と砂濾過とは、両方を併せ
て施すこともできる。Both the adsorption treatment and the sand filtration can be performed together.
【００４１】さらに、砂濾過による粗濾過を行なわない
場合には、回転ドラム型固液分離装置の前に、原水内の
汚濁成分を凝集フロック化する凝集反応処理を施すこと
ができる。Further, when coarse filtration by sand filtration is not carried out, a flocculation reaction treatment for flocculating the polluted components in the raw water can be carried out before the rotary drum type solid-liquid separator.
【００４２】すなわち、（６）（７）および（１６）
（１７）の発明は、原水中に懸濁粒子およびコロイドな
どが多い水で単なる繊維集合体の濾材を用いた回転ドラ
ム式連続濾過装置や砂濾過による粗濾過手段だけで目的
の不純物を十分に分離できない場合に適用される。これ
らによる濾過の前に、原水内の汚濁成分を凝集フロック
化する凝集反応処理を施す凝集反応手段を付設したもの
である。使用する凝集剤としては、硫酸アルミニウム、
電解アルミニウム、ポリ塩化アルミニウムなどがあげら
れる。その他、ｐＨ調整剤として硫酸や水酸化ナトリウ
ムなどを添加することができる。That is, (6), (7) and (16)
In the invention of (17), water containing a large amount of suspended particles and colloids in raw water is used to sufficiently remove the target impurities only by a rotary drum type continuous filtration device using a filter material of a simple fiber assembly or a coarse filtration means by sand filtration. It applies when it cannot be separated. Before the filtration by these, a flocculation reaction means for performing a flocculation reaction treatment for flocculating the polluted components in the raw water is additionally provided. As the coagulant used, aluminum sulfate,
Examples thereof include electrolytic aluminum and polyaluminum chloride. In addition, sulfuric acid, sodium hydroxide or the like can be added as a pH adjusting agent.
【００４３】（８）（９）（１０）および（１８）（１
９）（２０）の発明については、濾過材の目詰まり防
止、処理水の回収率向上など、実運転時の経済効果を目
的としたものであり、前記２次の精密濾過装置および限
外濾過装置における中空糸膜濾過材の膜寿命を延ばすた
めに、それぞれの処理水で中空糸膜濾過材を逆洗するこ
とができ、前記工程（ロ）から得られる逆洗水および前
記工程（ハ）から得られる濃縮水は、処理水の回収率を
あげるために、いずれも原水中に還流させることができ
る。(8) (9) (10) and (18) (1
The inventions of (9) and (20) are intended for economic effects during actual operation, such as prevention of clogging of the filter medium and improvement of the recovery rate of treated water. The secondary microfiltration device and the ultrafiltration are provided. In order to extend the membrane life of the hollow fiber membrane filtering material in the device, the hollow fiber membrane filtering material can be backwashed with each treated water, and the backwashing water obtained from the step (b) and the step (c). The concentrated water obtained from the above can be refluxed in raw water in order to increase the recovery rate of the treated water.
【００４４】原水中の不純物の種類や懸濁物質の大き
さ、純水の使用目的などに応じ、濾過装置の保護と不純
物の分離効率を勘案して、これらのシステムの中から最
も適切な水処理方法および装置を選択することができ
る。Depending on the type of impurities in the raw water, the size of suspended solids, the purpose of using pure water, etc., the most suitable water among these systems is selected in consideration of the protection of the filtration device and the separation efficiency of impurities. The processing method and device can be selected.
【００４５】[0045]
【実施例】以下、図面に示す実施例に基づいて本発明を
説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on the embodiments shown in the drawings.
【００４６】図１は、この発明の実施態様の一例を示す
概略フロー図である。FIG. 1 is a schematic flow chart showing an example of an embodiment of the present invention.
【００４７】図１の実施態様は、織物または編物の基材
が起毛され、太さ０．０５〜２０μｍの極細繊維の立毛
が横たわって基材の表面を覆ってなる濾過材を装着した
回転ドラム型固液分離装置１（“トレローム”（登録商
標）ＲＤ１５００−Ａ６Ｓ東レ（株）製）と、中空糸膜
を濾過材とする精密濾過装置２（トレキューブＴＣ逆洗
機能付 東レ（株）製）と、逆浸透膜を濾過材とする濾
過装置３（メンブラＳＵ−７２０ 東レ（株）製）より
構成された水処理装置に、ポリ塩化アルミニウムによる
凝集反応手段５を付設したものである。In the embodiment shown in FIG. 1, a woven or knitted base material is napped, and standing fibers of ultrafine fibers having a thickness of 0.05 to 20 μm lie down to cover the surface of the base material. Type solid-liquid separation device 1 ("Torelom" (registered trademark) RD1500-A6S Toray Co., Ltd.) and microfiltration device 2 using a hollow fiber membrane as a filtering material (Toray Co., Ltd. with Torecube TC backwash function) ) And a filtration device 3 (manufactured by Membra SU-720 Toray Co., Ltd.) that uses a reverse osmosis membrane as a filtration material, and an aggregating reaction means 5 of polyaluminum chloride is attached to the water treatment device.
【００４８】まず、供給水ポンプ７により、原水導入配
管４より砂濾過装置５へ原水が送られる。ここで濾過さ
れた処理水は貯槽６に入り、次の供給水ポンプ７により
回転ドラム型固液分離装置１に送られる。ここで濾過さ
れた処理水は次の貯槽６に入り、さらに次の供給水ポン
プ７により精密濾過装置２に送られる。ここで濾過され
た処理水はさらに次の貯槽６に入り、保安フィルター８
を経て高圧ポンプ９で逆浸透装置３に送られる。処理水
は純水送出配管１０より取り出される。回転ドラム型固
液分離装置における濾過材の洗浄水は濃縮水排出管１５
を経て系外に排出される。精密濾過装置の逆洗水および
逆浸透装置の濃縮水は配管１１，１２を経て原水中に還
流される。First, the feed water pump 7 sends raw water from the raw water introducing pipe 4 to the sand filter 5. The treated water filtered here enters the storage tank 6 and is sent to the rotary drum type solid-liquid separation device 1 by the next feed water pump 7. The treated water filtered here enters the next storage tank 6 and is further sent to the microfiltration device 2 by the next feed water pump 7. The treated water filtered here enters the next storage tank 6 and the security filter 8
And is sent to the reverse osmosis device 3 by the high pressure pump 9. The treated water is taken out from the pure water delivery pipe 10. The washing water for the filtering material in the rotary drum type solid-liquid separator is the concentrated water discharge pipe 15
Is discharged out of the system. The backwash water of the microfiltration device and the concentrated water of the reverse osmosis device are returned to the raw water via pipes 11 and 12.
【００４９】この実施例の場合は、原水のＦＩ値（ＡＳ
ＴＭ Ｄ４１８９に記載の方法に準拠して測定した値）
が５．５〜６．３の工業用水に硫酸を添加してｐＨ６に
調整し、凝集剤としてポリ塩化アルミニウムが５ｐｐｍ
になるように凝集剤を凝集材添加配管１４を通じて添加
した。生じたフロックを含む原水を回転ドラム式連続濾
過装置で濾過した。この濾過水のＦＩ値は、２．９〜
３．８となった。凝集処理しない場合はＦＩ値４．０〜
５．０であり、明らかに凝集処理により回転ドラム式連
続濾過装置の分離効率の向上が認められる。この濾過水
をさらに膜精密濾過装置で濾過した。この濾過水のＦＩ
値は、０．３〜０．９となった。使用した中空糸膜は、
孔径０．０１μｍのポリスルホン中空糸膜である。この
精密濾過装置の濾過水を逆浸透装置で処理した。なお、
精密濾過装置から排出される逆洗水および逆浸透装置か
ら排出される濃縮水は原水に還流した。得られた純水量
は９６ｍ3 ／ｈで、回収率は９０％で安定して長期間使
用できた。In the case of this embodiment, the FI value of raw water (AS
(Value measured according to the method described in TM D4189)
Is adjusted to pH 6 by adding sulfuric acid to industrial water of 5.5 to 6.3, and polyaluminum chloride is 5 ppm as a coagulant.
The coagulant was added through the coagulant addition pipe 14 so that The resulting raw water containing flocs was filtered by a rotary drum type continuous filtration device. The FI value of this filtered water is 2.9-
It became 3.8. FI value of 4.0 if agglomeration is not performed
It is 5.0, and it is clearly recognized that the coagulation treatment improves the separation efficiency of the rotary drum type continuous filtration device. The filtered water was further filtered with a membrane microfiltration device. FI of this filtered water
The value was 0.3 to 0.9. The hollow fiber membrane used is
It is a polysulfone hollow fiber membrane having a pore diameter of 0.01 μm. The filtered water of this microfiltration device was treated with a reverse osmosis device. In addition,
The backwash water discharged from the microfiltration device and the concentrated water discharged from the reverse osmosis device were returned to the raw water. The amount of pure water obtained was 96 m 3 / h, and the recovery rate was 90%, which was stable and could be used for a long time.
【００５０】逆浸透膜のクエン酸洗浄は１年に１回で、
逆浸透膜の平均寿命は２４月であった。従来の水処理方
法では、砂濾過した後、直接逆浸透装置に送水し純水を
製造していたが、同程度の原水のＦＩ値で純水量８０ｍ
3 ／ｈ、回収率は７５％で安定使用するには２月に１回
のクエン酸洗浄が必要であった。しかも逆浸透膜の平均
寿命は１２月程度であったから、実施例では卓越した効
果をあげることができた。The reverse osmosis membrane is washed with citric acid once a year.
The average lifetime of the reverse osmosis membrane was 24 months. In the conventional water treatment method, after sand filtration, water was directly sent to the reverse osmosis device to produce pure water.
The recovery rate was 3 / h, and the recovery rate was 75%, which required washing with citric acid once in February for stable use. In addition, since the average life of the reverse osmosis membrane was about 12 months, the examples were able to show outstanding effects.
【００５１】図２は、この発明の実施態様を示す別の概
略フロー図である。FIG. 2 is another schematic flow chart showing the embodiment of the present invention.
【００５２】図２の実施態様は、繊維を有孔芯に巻き付
けてなるフィルターカートリッジを濾過材とする濾過装
置１６と、中空糸膜を濾過材とする精密濾過装置２（ト
レキューブＴＣ 逆洗機能付き 東レ（株）製）と、逆
浸透膜を濾過材とする濾過装置３（メンブランＳＵ−７
２９ 東レ（株）製）より構成された水処理装置であ
る。In the embodiment shown in FIG. 2, a filtering device 16 using a filter cartridge made of fibers wound around a perforated core as a filtering material, and a microfiltration device 2 using a hollow fiber membrane as a filtering material (trecube TC backwashing function). Attached Toray Co., Ltd. and a filtration device 3 (Membrane SU-7) using a reverse osmosis membrane as a filtration material.
29 A water treatment device composed of Toray Industries, Inc.
【００５３】まず、供給ポンプ７により、原水導入管４
より濾過装置１６へ原水が送られる。ここで全量濾過さ
れて、次の精密濾過装置２に送られる。ここで濾過され
た処理水は貯槽６に入り、保安フィルター８を経て高圧
ポンプ９で濾過装置３に送られる。処理水は純水送出管
１０より取り出される。精密濾過装置の逆洗水は配管１
１を経て原水中に還流される。First, the raw water introduction pipe 4 is supplied by the supply pump 7.
Raw water is sent from the filter device 16. Here, the whole amount is filtered and sent to the next microfiltration device 2. The treated water filtered here enters the storage tank 6, passes through the safety filter 8, and is sent to the filtering device 3 by the high-pressure pump 9. The treated water is taken out from the pure water delivery pipe 10. Backwash water of the microfiltration device is pipe 1
It is refluxed into raw water via 1.
【００５４】この実施例の場合は、濾過装置１６に逆洗
機能がないため、濾過材の目詰まりによるフィルターカ
ートリッジの交換が必要となるので、原水の性状をよく
勘案して適用する必要がある。In the case of this embodiment, since the filtration device 16 does not have a backwash function, it is necessary to replace the filter cartridge due to the clogging of the filtration material, so it is necessary to carefully consider the properties of the raw water before applying. .
【００５５】[0055]
【発明の効果】本発明の水処理方法および水処理装置を
利用すれば、従来、逆浸透装置にトラブルを引き起こし
負担を増大させていた原水中の不純物が除去され、しか
も不純物の粒径の大きなものから少なくとも２段階の前
処理装置を経るため、各前処理装置の負担を軽減して分
離効率を向上することが出来た。その結果、逆浸透膜の
目詰まりは激減して膜の洗浄が殆ど必要でなくなり、逆
浸透膜の平均寿命が長くなる。さらに、処理量を増加さ
せることができて経済的な効果も大きい。EFFECTS OF THE INVENTION By using the water treatment method and the water treatment apparatus of the present invention, impurities in the raw water, which have conventionally caused troubles to the reverse osmosis apparatus and increased the burden, are removed, and the particle size of the impurities is large. Since the pretreatment device is passed through at least two stages from the product, the load on each pretreatment device can be reduced and the separation efficiency can be improved. As a result, the clogging of the reverse osmosis membrane is drastically reduced, the cleaning of the membrane is almost unnecessary, and the average life of the reverse osmosis membrane is extended. Furthermore, the amount of treatment can be increased, and the economic effect is large.
【図１】この発明の実施態様の一例を示す概略フロー図
である。FIG. 1 is a schematic flow chart showing an example of an embodiment of the present invention.
【図２】この発明の別の実施態様を示す概略フロー図で
ある。FIG. 2 is a schematic flow chart showing another embodiment of the present invention.
１：回転ドラム型固液分離装置 ２：中空糸膜を濾過材とする精密濾過装置 ３：逆浸透膜を濾過材とする濾過装置 ４：原水導入配管 ５：砂濾過装置 ６：貯槽 ７：供給水ポンプ ８：保安フィルター ９：高圧ポンプ １０：純水送出配管 １１：膜精密濾過装置の逆洗水を原水中に還流する配管 １２：逆浸透装置の濃縮水を原水中に還流する配管 １３：排水用配管 １４：凝集剤添加用配管 １５：濃縮水排出配管 １６：フィルターカートリッジ濾過装置 1: Rotating drum type solid-liquid separation device 2: Microfiltration device using hollow fiber membrane as filtration material 3: Filtration device using reverse osmosis membrane as filtration material 4: Raw water introduction pipe 5: Sand filtration device 6: Storage tank 7: Supply Water pump 8: Security filter 9: High pressure pump 10: Pure water delivery pipe 11: Pipe for returning backwash water of membrane microfiltration device to raw water 12: Pipe for returning concentrated water of reverse osmosis device to raw water 13: Drainage pipe 14: Flocculant addition pipe 15: Concentrated water discharge pipe 16: Filter cartridge filtration device
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.6 識別記号 庁内整理番号 ＦＩ 技術表示箇所 Ｂ０１Ｄ 39/08 Ｂ０１Ｄ 61/02 61/02 61/14 61/14 33/18 Ａ ─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. 6 Identification code Office reference number FI technical display location B01D 39/08 B01D 61/02 61/02 61/14 61/14 33/18 A
Claims (20)
材とする回転ドラム型固液分離装置を用いて、原水中か
ら、その原水に含まれている、粒径が１μｍ〜１００μ
ｍを越える不純物を除去する工程と、 （ロ）中空糸膜を濾過材とする精密濾過装置を用いて、
前記工程（イ）から得られる処理水から、その処理水中
に含まれている、粒径が０．０１〜１０μｍを越える不
純物を除去する工程と、 （ハ）逆浸透膜を濾過材とする濾過装置を用いて、前記
工程（ロ）から得られる処理水から、その処理水中に含
まれている不純物を除去する工程、を含むことを特徴と
する水処理方法。(A) Using a rotary drum type solid-liquid separation device having a cloth having naps of ultrafine fibers as a filtering material, the particle diameter contained in the raw water is from 1 μm to 100 μm.
a step of removing impurities exceeding m, and (b) using a microfiltration device having a hollow fiber membrane as a filtering material,
A step of removing impurities contained in the treated water, the particle size of which exceeds 0.01 to 10 μm, from the treated water obtained from the step (a), and (c) a filtration using a reverse osmosis membrane as a filtering material. And a step of removing impurities contained in the treated water from the treated water obtained in the step (b) using an apparatus.
ルターカートリッジを濾過材とする濾過装置を用いて、
原水中から、その原水に含まれている、粒径が１μｍ〜
１００μｍを越える不純物を除去する工程と、 （ロ）中空糸膜を濾過材とする精密濾過装置を用いて、
前記工程（イ）から得られる処理水から、その処理水中
に含まれている、粒径が０．０１〜１０μｍを越える不
純物を除去する工程と、 （ハ）逆浸透膜を濾過材とする濾過装置を用いて、前記
工程（ロ）から得られる処理水から、その処理水中に含
まれている不純物を除去する工程、を含むことを特徴と
する水処理方法。2. A filtration device comprising a filter cartridge comprising a filter cartridge comprising: (a) a fiber wound around a perforated core;
From raw water, the particle size contained in the raw water is 1 μm ~
Using a step of removing impurities exceeding 100 μm, and (b) a microfiltration device using a hollow fiber membrane as a filtering material,
A step of removing impurities contained in the treated water, the particle size of which exceeds 0.01 to 10 μm, from the treated water obtained from the step (a), and (c) a filtration using a reverse osmosis membrane as a filtering material. And a step of removing impurities contained in the treated water from the treated water obtained in the step (b) using an apparatus.
置を用いて、原水中から、その原水に含まれている、粒
径が０．０１〜１０μｍを越える不純物を除去する工程
と、 （ロ）中空糸膜を濾過材とする限外濾過装置を用いて、
前記工程（イ）から得られる処理水から、その処理水中
に含まれている、粒径が０．００１〜１μｍを越える不
純物を除去する工程と、 （ハ）逆浸透膜を濾過材とする濾過装置を用いて、前記
工程（ロ）から得られる処理水から、その処理水中に含
まれている不純物を除去する工程、を含むことを特徴と
する水処理方法。3. (a) A step of removing impurities contained in the raw water and having a particle size of from 0.01 to 10 μm or more by using a microfiltration device having a hollow fiber membrane as a filtering material. And (b) using an ultrafiltration device using a hollow fiber membrane as a filtering material,
A step of removing impurities contained in the treated water having a particle size of 0.001 to 1 μm from the treated water obtained in the step (a), and (c) a filtration using a reverse osmosis membrane as a filtering material. And a step of removing impurities contained in the treated water from the treated water obtained in the step (b) using an apparatus.
理を施すことを特徴とする請求項１〜３のいずれかに記
載の水処理方法。4. The water treatment method according to claim 1, wherein an adsorption treatment using activated carbon is performed after the step (a).
濾過を施すことを特徴とする請求項１〜４のいずれかに
記載の水処理方法。5. The water treatment method according to claim 1, wherein the raw water is subjected to rough filtration by sand filtration before the step (a).
水内の汚濁成分を凝集フロック化する凝集反応を施すこ
とを特徴とする請求項５に記載の水処理方法。6. The water treatment method according to claim 5, wherein a coagulation reaction for coagulating flocs of the polluted components in the raw water is carried out before the treatment for producing filtered water by sand filtration.
（イ）の前に、原水内の汚濁成分を凝集フロック化する
凝集反応を施すことを特徴とする請求項１または４に記
載の水処理方法。7. The water according to claim 1 or 4, wherein before the step (a) using the rotary drum type solid-liquid separator, a flocculation reaction for flocculating the polluted components in the raw water is performed. Processing method.
の中空糸膜濾過材を処理水を用いて逆洗することを特徴
とする請求項１〜７のいずれかに記載の水処理方法。8. The water treatment method according to claim 1, wherein the hollow fiber membrane filtering material of the microfiltration device and / or the ultrafiltration device is backwashed with treated water.
する請求項８に記載の水処理方法。9. The water treatment method according to claim 8, wherein the backwash water is refluxed into the raw water.
に還流させることを特徴とする請求項１〜９のいずれか
に記載の水処理方法。10. The water treatment method according to claim 1, wherein the concentrated water obtained in the step (c) is refluxed into the raw water.
接続して設けた、粒径が１μｍ以上の不純物を除去する
極細繊維の立毛を有する布帛を濾過材とする回転ドラム
型固液分離装置（１次）と、この回転ドラム型固液分離
装置の処理水出側に入側を接続して設けた、粒径が０．
０１以上の不純物を除去する中空糸膜を濾過材とする精
密濾過装置（２次）と、この精密膜濾過装置の出側に入
側を接続して設けた、逆浸透膜を濾過材とする濾過装置
とを備えていることを特徴とする水処理装置。11. A rotary drum type solid having a raw water inlet pipe and a cloth provided with an inlet side connected to the raw water inlet pipe and having naps of ultrafine fibers for removing impurities having a particle diameter of 1 μm or more as a filtering material. The liquid separator (primary) and the rotary drum type solid-liquid separator provided with the inlet side connected to the treated water outlet side have a particle size of 0.
A microfiltration device (secondary) using a hollow fiber membrane for removing impurities of 01 or more as a filtration material, and a reverse osmosis membrane provided by connecting the inlet side to the outlet side of this precision membrane filtration device is used as the filtration material. A water treatment device comprising: a filtration device.
接続して設けた、粒径が１μｍ以上の不純物を除去する
繊維を有孔芯に巻き付けてなるフィルターカートリッジ
の濾過装置（１次）と、このフィルターカートリッジの
濾過装置の出側に入側を接続して設けた、粒径が０．０
１以上の不純物を除去する中空糸膜を濾過材とする精密
濾過装置（２次）と、この精密濾過装置の出側に入側を
接続して設けた、逆浸透膜を濾過材とする濾過装置とを
備えていることを特徴とする水処理装置。12. A filtration device for a filter cartridge (1) comprising a raw water inlet pipe and a fiber provided with an inlet side connected to the raw water inlet pipe and wound around a perforated core to remove impurities having a particle size of 1 μm or more. And the particle size of 0.0), which is provided by connecting the inlet side to the outlet side of the filter device of this filter cartridge.
A microfiltration device (secondary) that uses a hollow fiber membrane that removes one or more impurities as a filtration material, and a filtration that uses a reverse osmosis membrane as a filtration material that is provided by connecting the inlet side to the outlet side of this microfiltration device. And a water treatment device.
接続して設けた、粒径が０．０１以上の不純物を除去す
る中空糸膜を濾過材とする精密濾過装置（１次）と、こ
の精密濾過装置の出側に入側を接続して設けた、粒径が
０．００１以上の不純物を除去する中空糸膜を濾過材と
する限外濾過装置（２次）と、この限外濾過装置の出側
に入側を接続して設けた、逆浸透膜を濾過材とする濾過
装置とを備えていることを特徴とする水処理装置。13. A microfiltration device having a raw water inlet pipe and a hollow fiber membrane provided with an inlet side connected to the raw water inlet pipe for removing impurities having a particle size of 0.01 or more as a filter medium (primary filter). ), And an ultrafiltration device (secondary) having a hollow fiber membrane for removing impurities having a particle size of 0.001 or more, which is provided by connecting an inlet side to an outlet side of the microfiltration device (secondary), A water treatment apparatus comprising: a filtration device having a reverse osmosis membrane as a filtering material, which is provided by connecting an inlet side and an inlet side of the ultrafiltration device.
炭による吸着処理を施す活性炭吸着手段を付設したこと
を特徴とする請求項１１〜１３のいずれかに記載の水処
理装置。14. The water treatment apparatus according to claim 11, further comprising an activated carbon adsorption means for performing adsorption treatment with activated carbon after the primary separation or filtration apparatus.
に砂濾過による粗濾過を施す粗濾過手段を付設したこと
を特徴とする請求項１１〜１４のいずれかに記載の水処
理装置。15. The water treatment apparatus according to claim 11, further comprising, before the primary separation or filtration apparatus, a coarse filtration means for coarsely filtering raw water by sand filtration. .
の汚濁成分を凝集フロック化する凝集反応処理を施す凝
集反応手段を付設したことを特徴とする請求項１５に記
載の水処理装置。16. The water treatment apparatus according to claim 15, further comprising a flocculation reaction means for performing flocculation reaction treatment for flocculating pollutant components in raw water before the coarse filtration means by sand filtration. .
内の汚濁成分を凝集フロック化する凝集反応を施す凝集
反応手段を付設したことを特徴とする請求項１１または
１４〜１６のいずれかに記載の水処理装置。17. The rotating drum type solid-liquid separation device is further provided with an aggregating reaction means for performing an aggregating reaction for aggregating flocs of the polluted components in the raw water, to attach the aggregating reaction means. The water treatment device according to claim 1.
置は、処理水を用いて中空糸膜濾過材を逆洗する機構を
備えたことを特徴とする請求項１１〜１７のいずれかに
記載の水処理装置。18. The microfiltration device and / or the ultrafiltration device is provided with a mechanism for backwashing the hollow fiber membrane filtering material with treated water. Water treatment equipment.
を備えたことを特徴とする請求項１１〜１７のいずれか
に記載の水処理装置。19. The water treatment device according to claim 11, further comprising a pipe for refluxing the secondary backwash water into the raw water.
流させる配管を備えている請求項１１〜１９のいずれか
に記載の水処理装置。20. The water treatment device according to claim 11, further comprising a pipe for refluxing the concentrated water of the tertiary reverse osmosis device into the raw water.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7225256A JPH0966296A (en) | 1995-09-01 | 1995-09-01 | Water treatment method and apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7225256A JPH0966296A (en) | 1995-09-01 | 1995-09-01 | Water treatment method and apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0966296A true JPH0966296A (en) | 1997-03-11 |
Family
ID=16826467
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7225256A Pending JPH0966296A (en) | 1995-09-01 | 1995-09-01 | Water treatment method and apparatus |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0966296A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007098270A (en) * | 2005-10-04 | 2007-04-19 | Japan Organo Co Ltd | Method and apparatus for producing pure water |
| JP2008086966A (en) * | 2006-10-05 | 2008-04-17 | Nomura Micro Sci Co Ltd | Method and apparatus for producing pure water |
| JP2010227884A (en) * | 2009-03-27 | 2010-10-14 | Metawater Co Ltd | Water treatment system and water treatment method |
| WO2015167111A1 (en) * | 2014-04-30 | 2015-11-05 | 주식회사 포스코건설 | Cartridge filter for inhibiting biofilm contamination, method for manufacturing same, and membrane filtering water treatment apparatus using same |
| WO2015182850A1 (en) * | 2014-05-29 | 2015-12-03 | 주식회사 포스코건설 | Reverse osmosis membrane filter for preventing formation of biofilm, method for manufacturing same and water treatment apparatus using same |
-
1995
- 1995-09-01 JP JP7225256A patent/JPH0966296A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007098270A (en) * | 2005-10-04 | 2007-04-19 | Japan Organo Co Ltd | Method and apparatus for producing pure water |
| JP2008086966A (en) * | 2006-10-05 | 2008-04-17 | Nomura Micro Sci Co Ltd | Method and apparatus for producing pure water |
| JP2010227884A (en) * | 2009-03-27 | 2010-10-14 | Metawater Co Ltd | Water treatment system and water treatment method |
| WO2015167111A1 (en) * | 2014-04-30 | 2015-11-05 | 주식회사 포스코건설 | Cartridge filter for inhibiting biofilm contamination, method for manufacturing same, and membrane filtering water treatment apparatus using same |
| KR20150125384A (en) * | 2014-04-30 | 2015-11-09 | 주식회사 포스코건설 | Natural antimicrobial substance supported cartridge filter and method for preparing thereof and method for treating water with separation membrane using the same |
| WO2015182850A1 (en) * | 2014-05-29 | 2015-12-03 | 주식회사 포스코건설 | Reverse osmosis membrane filter for preventing formation of biofilm, method for manufacturing same and water treatment apparatus using same |
| KR20150137299A (en) * | 2014-05-29 | 2015-12-09 | 주식회사 포스코건설 | Biofilm supported reverse osmosis membrane filter and method for preparing thereof and method for treating water using the same |
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