JP2001219165A - Advanced membrane treating device - Google Patents
Advanced membrane treating deviceInfo
- Publication number
- JP2001219165A JP2001219165A JP2000033030A JP2000033030A JP2001219165A JP 2001219165 A JP2001219165 A JP 2001219165A JP 2000033030 A JP2000033030 A JP 2000033030A JP 2000033030 A JP2000033030 A JP 2000033030A JP 2001219165 A JP2001219165 A JP 2001219165A
- Authority
- JP
- Japan
- Prior art keywords
- membrane
- ozone
- hollow fiber
- fiber membrane
- treatment
- 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)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、高度膜処理装置に
関し、詳しくは、中空糸膜の内側に原水を供給してろ過
操作を行う内圧式膜処理と、オゾンによる滅菌，脱色，
脱臭等の高度処理とを組合わせた高度膜処理装置に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an advanced membrane treatment apparatus, and more particularly, to an internal pressure type membrane treatment in which raw water is supplied to the inside of a hollow fiber membrane to perform a filtration operation, and sterilization, decolorization,
The present invention relates to an advanced membrane processing apparatus that combines advanced processing such as deodorization.
【０００２】[0002]
【従来の技術】内圧式膜処理装置は、膜モジュールを形
成する中空糸膜の内側に原水を供給してろ過操作を行う
ものであって、原水を循環ポンプで中空糸膜内に循環さ
せ、中空糸膜を透過した膜処理水（膜ろ過水）を外部に
取出すクロスフローろ過方式で運転している。このよう
な内圧式膜処理装置は、通常の一般的なろ過方式に比べ
て比較的コンパクトな施設での固液分離が可能であり、
省力化も可能であるという利点を有している。2. Description of the Related Art An internal pressure type membrane treatment apparatus performs a filtration operation by supplying raw water inside a hollow fiber membrane forming a membrane module. The raw water is circulated through the hollow fiber membrane by a circulation pump. The system is operated by a cross-flow filtration system that takes out the membrane-treated water (membrane filtered water) that has passed through the hollow fiber membrane. Such an internal pressure type membrane treatment device can perform solid-liquid separation in a relatively compact facility as compared with a general filtration method.
There is an advantage that labor can be saved.
【０００３】一方、オゾンによる滅菌，脱色，脱臭等の
高度処理は、下水処理水の再利用や、処理水放流先の富
栄養化防止等の観点から、近年は、このような高度処理
施設の建設が推進されている。On the other hand, advanced treatments such as sterilization, decolorization and deodorization with ozone have recently been carried out in such advanced treatment facilities from the viewpoints of reuse of sewage treated water and prevention of eutrophication at the discharge destination of treated water. Construction is underway.
【０００４】[0004]
【発明が解決しようとする課題】しかし、従来の水処理
施設では、ろ過処理を行う設備と、高度処理を行う設備
とをそれぞれ別個に建設し、配管や水路で接続するよう
にしていたため、多くの設置面積が必要で、機器類も多
くなって建設費が高くなるという問題があった。However, in a conventional water treatment facility, a facility for performing a filtration process and a facility for performing an advanced process are separately constructed and connected by a pipe or a water channel. However, there is a problem that a large installation space is required, the number of devices increases, and construction costs increase.
【０００５】そこで本発明は、中空糸膜によるろ過処理
とオゾンによる高度処理とを同時に行うことができ、し
かも、中空糸膜の逆洗も効果的に行うことができる高度
膜処理装置を提供することを目的としている。Accordingly, the present invention provides an advanced membrane treatment apparatus capable of simultaneously performing a filtration treatment using a hollow fiber membrane and an advanced treatment using ozone, and effectively performing backwashing of the hollow fiber membrane. It is intended to be.
【０００６】[0006]
【課題を解決するための手段】上記目的を達成するた
め、本発明の高度膜処理装置は、中空糸膜の内側に原水
を供給してろ過操作を行う内圧式膜処理装置において、
前記中空糸膜を設置した処理槽に、オゾン含有ガスを導
入するオゾン導入部を設けたことを特徴としている。Means for Solving the Problems To achieve the above object, an advanced membrane treatment device of the present invention is an internal pressure type membrane treatment device for supplying raw water inside a hollow fiber membrane and performing a filtration operation.
An ozone introduction unit for introducing an ozone-containing gas is provided in the treatment tank provided with the hollow fiber membrane.
【０００７】[0007]
【発明の実施の形態】図１は本発明の高度膜処理装置の
一形態例を示す系統図である。この高度膜処理装置は、
処理槽１０の下部に中空糸膜からなる膜モジュール１１
を設置するとともに、該膜モジュール１１の下方あるい
は上方に、オゾン含有ガスを導入するオゾン導入部１２
を設けたものであり、処理槽１０は、オゾンと膜処理水
との接触を十分に行える高さ（水深）に形成されてい
る。DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 is a system diagram showing one embodiment of an advanced film processing apparatus according to the present invention. This advanced membrane processing equipment
A membrane module 11 composed of a hollow fiber membrane is provided below the treatment tank 10.
And an ozone introduction unit 12 for introducing an ozone-containing gas below or above the membrane module 11.
The treatment tank 10 is formed at a height (water depth) at which sufficient contact between ozone and membrane-treated water can be achieved.
【０００８】また、膜モジュール１１でろ過処理を行う
ための設備として、原水供給用の原水供給ポンプ１３及
び原水循環用の循環ポンプ１４が設けられており、原水
供給ポンプ１３から供給される原水は、循環ポンプ１３
により加圧されて膜流入経路１５から膜モジュール１１
の中空糸膜内部側に供給され、中空糸膜を透過した膜処
理水が処理槽１０内に流出し、残りの原水は循環経路１
６に流出して循環ポンプ１４に循環する。Further, as equipment for performing a filtration treatment in the membrane module 11, a raw water supply pump 13 for supplying raw water and a circulation pump 14 for circulating raw water are provided. , Circulation pump 13
From the membrane inflow path 15 to the membrane module 11
Is supplied to the inside of the hollow fiber membrane and permeated through the hollow fiber membrane, flows out into the treatment tank 10, and the remaining raw water passes through the circulation path 1.
6 and circulates to the circulation pump 14.
【０００９】前記オゾン導入部１２は、図示しないオゾ
ン発生器で発生したオゾンを含むガス（オゾン含有ガ
ス）を、処理槽１０内の処理水中に導入するためのもの
であって、オゾン含有ガスは、処理槽１０内に設置され
た適宜な散気手段を介して処理水中に導入される。導入
されたオゾンによって滅菌，脱色，脱臭等の高度処理が
行われた処理水は、処理槽１０の上部に設けられた処理
水流出経路１７から流出する。The ozone introduction section 12 is for introducing a gas containing ozone (ozone-containing gas) generated by an ozone generator (not shown) into the treatment water in the treatment tank 10. Is introduced into the treated water through an appropriate air diffuser provided in the treatment tank 10. The treated water that has been subjected to advanced treatment such as sterilization, decolorization, and deodorization by the introduced ozone flows out from a treated water outflow path 17 provided at an upper portion of the treatment tank 10.
【００１０】このように、中空糸膜によるろ過処理とオ
ゾンによる高度処理とを一つの処理槽１０で行うに形成
することにより、高品位の処理水が得られるとともに、
処理装置の小型化が図れる。なお、オゾン導入部１２の
位置は、膜モジュール１１と干渉しない位置に任意に設
定することができるが、膜モジュール１１の下方に設置
した場合は、膜モジュール１１の点検や交換が容易に行
える利点があり、膜モジュール１１の上方にオゾン導入
部１２を設置した場合は、処理水内に導入されたオゾン
が中空糸膜に直接接触しないので、オゾンによる中空糸
膜の劣化を抑制することができる。As described above, by performing the filtration treatment using the hollow fiber membrane and the advanced treatment using ozone in one treatment tank 10, high-quality treated water can be obtained.
The processing apparatus can be reduced in size. The position of the ozone introduction unit 12 can be arbitrarily set at a position that does not interfere with the membrane module 11. However, when the ozone introduction unit 12 is installed below the membrane module 11, the inspection and replacement of the membrane module 11 can be easily performed. In the case where the ozone introduction unit 12 is installed above the membrane module 11, the ozone introduced into the treated water does not directly contact the hollow fiber membrane, so that the deterioration of the hollow fiber membrane due to ozone can be suppressed. .
【００１１】また、内圧式膜処理装置における膜モジュ
ール１１の中空糸膜は、定期的に中空糸膜の透過水側
（外側）から原水側（内側）に逆洗水を通過させて膜内
面に付着した汚れを除去する逆洗処理を行う必要があ
る。このため、本形態例装置には、膜モジュール１４の
中空糸膜内部側の水を排出するための逆洗経路１８、逆
洗弁１９及び原水供給弁２０が設けられている。[0011] The hollow fiber membrane of the membrane module 11 in the internal pressure type membrane treatment apparatus periodically passes backwash water from the permeated water side (outside) to the raw water side (inside) of the hollow fiber membrane to form an inner surface of the membrane. It is necessary to perform a backwashing treatment to remove the adhered dirt. For this reason, the apparatus of the present embodiment is provided with a backwash path 18, a backwash valve 19, and a raw water supply valve 20 for discharging water inside the hollow fiber membrane of the membrane module 14.
【００１２】逆洗時には、図２に示すように、原水供給
弁２０を閉じ、循環ポンプ１４を停止させ、オゾン導入
部１２からのオゾンの導入を停止した状態で逆洗弁１９
を開くことにより、処理槽１０内の水頭圧を利用して処
理槽１０内の処理水を逆洗水として中空糸膜外側から内
側に逆流させ、膜流入経路１５及び循環経路１６を介し
て逆洗経路１８から排出することができる。At the time of backwashing, as shown in FIG. 2, the raw water supply valve 20 is closed, the circulation pump 14 is stopped, and the backwash valve 19 is stopped in a state where the introduction of ozone from the ozone introduction unit 12 is stopped.
, The treated water in the treatment tank 10 is back-flushed as backwash water from the outside to the inside of the hollow fiber membrane using the water head pressure in the treatment tank 10, and the reverse flow is performed via the membrane inflow path 15 and the circulation path 16. It can be discharged from the washing route 18.
【００１３】このように、処理槽１０内の処理水を逆洗
水に利用することにより、逆洗のための動力を必要とし
ないだけでなく、逆洗水に含まれるオゾンの酸化力によ
って効率的な膜洗浄を行うことができるので、長期間に
わたって安定した運転を行うことができる。さらに、こ
の逆洗時に、逆洗弁１９を閉じて膜を逆洗水中に浸漬さ
せた状態にしたり、循環ポンプ１４を運転して膜内側の
逆洗水に流動を与えたりすることを適宜に組合わせるこ
とにより、更に高い洗浄効果を得ることができる。As described above, by using the treated water in the treatment tank 10 for backwashing water, not only power for backwashing is not required but also efficiency due to oxidizing power of ozone contained in the backwashing water. Since stable membrane cleaning can be performed, stable operation can be performed for a long period of time. Further, at the time of this backwashing, the backwash valve 19 is closed so that the membrane is immersed in the backwash water, or the circulation pump 14 is operated to give a flow to the backwash water inside the membrane. By combining them, a higher cleaning effect can be obtained.
【００１４】[0014]
【発明の効果】以上説明したように、本発明の高度膜処
理装置によれば、膜処理とオゾン処理とによって高度な
処理水質を得ることができる。さらに、膜処理槽とオゾ
ン処理処理槽とを一体化したことにより、装置のコンパ
クト化を図ることができる。As described above, according to the advanced membrane treatment apparatus of the present invention, high treated water quality can be obtained by membrane treatment and ozone treatment. Further, by integrating the membrane treatment tank and the ozone treatment tank, the size of the apparatus can be reduced.
【図１】 本発明の高度膜処理装置の一形態例を示す系
統図である。FIG. 1 is a system diagram showing one embodiment of an advanced membrane processing apparatus of the present invention.
【図２】 膜モジュール逆洗時の状態を示す系統図であ
る。FIG. 2 is a system diagram showing a state at the time of back washing of the membrane module.
１０…処理槽、１１…膜モジュール、１２…オゾン導入
部、１３…原水供給ポンプ、１４…循環ポンプ、１５…
膜流入経路、１６…循環経路、１７…処理水流出経路、
１８…逆洗経路、１９…逆洗弁、２０…原水供給弁DESCRIPTION OF SYMBOLS 10 ... Treatment tank, 11 ... Membrane module, 12 ... Ozone introduction part, 13 ... Raw water supply pump, 14 ... Circulation pump, 15 ...
Membrane inflow path, 16: circulation path, 17: treated water outflow path,
18: backwash route, 19: backwash valve, 20: raw water supply valve
───────────────────────────────────────────────────── フロントページの続き Ｆターム(参考） 4D006 HA02 HA18 JA25A JA56A JA70A KA33 KA63 KB30 KC03 KC16 KD06 KD21 PB08 4D050 AA15 AB03 AB04 AB06 BB02 BD03 CA09 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 4D006 HA02 HA18 JA25A JA56A JA70A KA33 KA63 KB30 KC03 KC16 KD06 KD21 PB08 4D050 AA15 AB03 AB04 AB06 BB02 BD03 CA09
Claims (1)
作を行う内圧式膜処理装置において、前記中空糸膜を設
置した処理槽に、オゾン含有ガスを導入するオゾン導入
部を設けたことを特徴とする高度膜処理装置。1. An internal pressure type membrane treatment apparatus for performing filtration operation by supplying raw water inside a hollow fiber membrane, wherein an ozone introduction unit for introducing an ozone-containing gas is provided in a treatment tank in which the hollow fiber membrane is installed. Advanced membrane processing equipment characterized by the above.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000033030A JP4248116B2 (en) | 2000-02-10 | 2000-02-10 | Advanced membrane processing equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2000033030A JP4248116B2 (en) | 2000-02-10 | 2000-02-10 | Advanced membrane processing equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JP2001219165A true JP2001219165A (en) | 2001-08-14 |
| JP4248116B2 JP4248116B2 (en) | 2009-04-02 |
Family
ID=18557563
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000033030A Expired - Fee Related JP4248116B2 (en) | 2000-02-10 | 2000-02-10 | Advanced membrane processing equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP4248116B2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6755977B2 (en) * | 2002-06-19 | 2004-06-29 | Dennis A. Brunsell | Method in treating aqueous waste feedstream for improving the flux rates, cleaning and the useful life of filter media |
-
2000
- 2000-02-10 JP JP2000033030A patent/JP4248116B2/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6755977B2 (en) * | 2002-06-19 | 2004-06-29 | Dennis A. Brunsell | Method in treating aqueous waste feedstream for improving the flux rates, cleaning and the useful life of filter media |
| USRE40943E1 (en) * | 2002-06-19 | 2009-10-27 | Diversified Technologies Services, Inc. | Method in treating aqueous waste feedstream for improving the flux rates, cleaning and the useful life of filter media |
Also Published As
| Publication number | Publication date |
|---|---|
| JP4248116B2 (en) | 2009-04-02 |
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