JPH0630762B2 - Photooxidation treatment method and apparatus thereof - Google Patents
Photooxidation treatment method and apparatus thereofInfo
- Publication number
- JPH0630762B2 JPH0630762B2 JP1118581A JP11858189A JPH0630762B2 JP H0630762 B2 JPH0630762 B2 JP H0630762B2 JP 1118581 A JP1118581 A JP 1118581A JP 11858189 A JP11858189 A JP 11858189A JP H0630762 B2 JPH0630762 B2 JP H0630762B2
- Authority
- JP
- Japan
- Prior art keywords
- water
- treated
- fine particles
- ultrafiltration membrane
- treatment tank
- 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 - Fee Related
Links
Landscapes
- Separation Using Semi-Permeable Membranes (AREA)
- Physical Water Treatments (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Description
【発明の詳細な説明】 （産業上の利用分野） この発明は、二酸化チタンなどの微粒子を触媒とした光
酸化処理方法とその装置に関する。Description: TECHNICAL FIELD The present invention relates to a photooxidation treatment method using fine particles of titanium dioxide or the like as a catalyst and an apparatus thereof.
（従来の技術） プール水等の殺菌には従来塩素などの薬品処理が行なわ
れてきたが、薬品による殺菌処理は人体への影響から手
控えられる傾向にある。(Prior Art) Conventionally, a chemical treatment such as chlorine has been performed for sterilizing pool water, but the sterilization treatment with a chemical tends to be refrained from the influence on the human body.
これに対して、紫外線を利用した被処理水の殺菌は、薬
品殺菌法と異なり、人体への影響が殆ど無く効果的に殺
菌処理ができるなどの特性があり、種々の生産分野に応
用され、需要は増大されつつある。On the other hand, sterilization of water to be treated using ultraviolet rays, unlike chemical sterilization methods, has characteristics such as effective sterilization treatment with almost no effect on the human body, and is applied to various production fields. Demand is increasing.
この紫外線を利用した殺菌法として最も効率が良いとさ
れるのは、外周を保護管で被覆した紫外線ランプを両端
を開放した処理タンク内に挿入するとともに、処理タン
クの両端には被処理水の給水管乃至排水管に接続するよ
うにした紫外線殺菌装置を使用して、被処理水が紫外線
ランプの周囲を通過する間に殺菌を行なう方法である。It is said that the most efficient sterilization method using this ultraviolet ray is to insert an ultraviolet lamp whose outer periphery is covered with a protective tube into a treatment tank with both ends open and to treat water to be treated at both ends of the treatment tank. It is a method of sterilizing while water to be treated passes around the ultraviolet lamp by using an ultraviolet sterilizer connected to a water supply pipe or a drain pipe.
一方、これら紫外線に照射される被処理水中に二酸化チ
タン等の微粒子を懸濁させると、これら微粒子の触媒作
用により更に効果的な殺菌処理が行なわれることが知ら
れている。On the other hand, it is known that when fine particles of titanium dioxide or the like are suspended in the water to be treated which is irradiated with these ultraviolet rays, a more effective sterilization treatment is performed by the catalytic action of these fine particles.
（発明が解決しようとする課題） しかしながら、上述のように二方法を組み合わせ、被処
理水中に二酸化チタン等の微粒子を懸濁させて紫外線ラ
ンプの周囲を通過させて殺菌処理を行なう場合には、処
理後の水中から二酸化チタン微粒子を分離、回収するの
が極めて困難であり、またこれら二酸化チタン微粒子を
完全に分離、回収するには大型の分離装置を必要とする
などの難点がある。(Problems to be solved by the invention) However, in the case of performing the sterilization treatment by combining the two methods as described above and suspending fine particles such as titanium dioxide in the water to be treated and passing them around the ultraviolet lamp. It is extremely difficult to separate and collect the titanium dioxide fine particles from the treated water, and a large separation device is required to completely separate and collect the titanium dioxide fine particles.
この発明は、上記実情に鑑み、被処理水中に二酸化チタ
ン等の微粒子を懸濁させて紫外線ランプの周囲を通過さ
せて紫外線照射処理を行なうに際して処理後の水中に含
まれる二酸化チタン等の微粒子を分離、回収する方法と
その装置を提案することを目的とする。In view of the above circumstances, the present invention is to suspend fine particles of titanium dioxide or the like in the water to be treated and pass through the periphery of an ultraviolet lamp to perform fine particles of titanium dioxide or the like contained in the water after treatment when performing ultraviolet irradiation treatment. The purpose is to propose a method for separating and collecting and a device therefor.
（課題を解決するための手段） 以上の課題を解決するために、この発明では紫外線照射
ランプを挿入した処理槽と限外濾過膜を備えた分離槽を
並設し、処理槽には触媒微粒子を懸濁させた被処理水を
送入し、同時に上記ランプより紫外線を照射して触媒微
粒子により被処理水を浄化、処理し、次に被処理水を分
離槽に送入し、該分離槽では被処理水の一部を限外濾過
膜を通して外部に排出し、その間に被処理水中に含まれ
る触媒微粒子を限外濾過膜で捕集し、また被処理水の残
部はそのまま上記処理槽に戻し、次に限外濾過膜には上
記被処理水の通水方向とは逆方向に洗浄水を通水し、限
外濾過膜に捕集された触媒微粒子を分離し、分離された
触媒微粒子を含む洗浄水を上記処理槽に戻すようにした
光酸化処理方法とその装置を提案するものである。(Means for Solving the Problems) In order to solve the above problems, in the present invention, a treatment tank in which an ultraviolet irradiation lamp is inserted and a separation tank provided with an ultrafiltration membrane are provided in parallel, and catalyst fine particles are provided in the treatment tank. Water to be treated is introduced, and at the same time ultraviolet rays are radiated from the lamp to purify and treat the treated water with catalyst fine particles, and then the treated water is fed to a separation tank, Then, a part of the water to be treated is discharged to the outside through the ultrafiltration membrane, while the catalyst fine particles contained in the water to be treated are collected by the ultrafiltration membrane, and the rest of the water to be treated is directly stored in the treatment tank. Then, washing water is passed through the ultrafiltration membrane in a direction opposite to that of the water to be treated to separate the catalyst fine particles collected in the ultrafiltration membrane, and the separated catalyst fine particles PROPOSAL OF PHOTOOXIDATION TREATMENT METHOD AND APPARATUS FOR RETURNING Flushing Water Containing Water to the Treatment Tank Is.
（作用） この発明で使用する限外濾過膜は、例えば溶液中の塩
類、糖類等の低分子物質は透過し、高分子物質を透過さ
せない半透膜であるが、この発明では二酸化チタン等の
触媒微粒子を懸濁させた被処理水は処理槽内で紫外線照
射されて処理され、次に被処理水は分離槽に送入して限
外濾過膜を通過させることにより、触媒微粒子は限外濾
過膜の細孔内に捕集される。更に限外濾過膜には前記被
処理水の通水方向とは逆方向に洗浄水を通水すると、限
外濾過膜の細孔内に捕集された触媒微粒子は分離され
る。そして、触媒微粒子を含む洗浄水は処理槽に戻して
触媒微粒子を再利用するものである。(Operation) The ultrafiltration membrane used in the present invention is a semipermeable membrane that allows low molecular weight substances such as salts and saccharides in a solution to pass through but does not allow high molecular weight substances to pass through. The water to be treated in which the catalyst fine particles are suspended is irradiated with ultraviolet rays in the treatment tank to be treated, and then the water to be treated is fed into the separation tank and passed through the ultrafiltration membrane, whereby the catalyst fine particles are It is collected in the pores of the filtration membrane. Further, when washing water is passed through the ultrafiltration membrane in a direction opposite to that of the water to be treated, the catalyst fine particles captured in the pores of the ultrafiltration membrane are separated. Then, the cleaning water containing the catalyst fine particles is returned to the treatment tank to reuse the catalyst fine particles.
即ち、この発明では限外濾過膜を用いて、光酸化処理法
に用いる二酸化チタン等の触媒微粒子を効果的に分離、
回収することができるのである。That is, in the present invention, an ultrafiltration membrane is used to effectively separate catalyst fine particles such as titanium dioxide used in the photooxidation treatment method.
It can be recovered.
なお、この発明においては限外濾過膜の型式としては、
市販されているチューブラー型、マルチチューブ型、プ
レート型、スパイラル型、ホローファイバー型などを使
用することができる。In this invention, as the model of the ultrafiltration membrane,
Commercially available tubular type, multi-tube type, plate type, spiral type, hollow fiber type and the like can be used.
また、紫外線照射ランプとしては、高圧水銀灯、中圧水
銀灯、低圧水銀灯等を被処理水の種類に応じて使用する
ことができる。As the ultraviolet irradiation lamp, a high pressure mercury lamp, a medium pressure mercury lamp, a low pressure mercury lamp or the like can be used depending on the type of water to be treated.
（実施例） 以下、この発明を図示の実施例に基づいて説明する。(Embodiment) Hereinafter, the present invention will be described based on an illustrated embodiment.
第１図は、この発明の一実施例を示すもので、１は、上
部に給水口２、下部に排水口３を有する処理槽で、処理
槽１の外周にはヒータ４が設けられ、処理槽１の内部に
はその外周に石英製の保護管５を設けた紫外線ランプ６
を挿入する。７は分離槽で、分離槽７内にはその中央に
両端を開放した通水路８を有する限外濾過膜９を設け、
また分離槽７の底部には通水路８の下端に接続する給水
口10を設け、更に限外濾過膜９の上端部に対応する分離
槽７の上部には排水管11を設け、該排水管11にはポンプ
12を設ける。FIG. 1 shows an embodiment of the present invention. Reference numeral 1 is a treatment tank having a water supply port 2 in the upper part and a drainage port 3 in the lower part. An ultraviolet lamp 6 provided with a quartz protection tube 5 on the outer periphery of the tank 1
Insert. Reference numeral 7 denotes a separation tank, and an ultrafiltration membrane 9 having a water passage 8 whose both ends are open is provided in the center of the separation tank 7.
Further, a water inlet 10 connected to the lower end of the water passage 8 is provided at the bottom of the separation tank 7, and a drain pipe 11 is provided at the upper portion of the separation tank 7 corresponding to the upper end of the ultrafiltration membrane 9. Pump to 11
Provide 12
一方、処理槽１の排水口３と分離槽７の給水口11との間
には下部連絡路13を設け、連絡路13には圧送ポンプ14を
介在させる。また、限外濾過膜９の通水路８の上端と処
理槽１の上部との間には上部連絡路15を設け、更に下部
連絡路13にはバルブ16によって切り替えられる分岐路17
を設け、該分岐路17の上端を上部連絡路15に接続する。On the other hand, a lower communication path 13 is provided between the drainage port 3 of the treatment tank 1 and the water supply port 11 of the separation tank 7, and a pressure pump 14 is interposed in the communication path 13. Further, an upper connecting passage 15 is provided between the upper end of the water passage 8 of the ultrafiltration membrane 9 and the upper portion of the treatment tank 1, and the lower connecting passage 13 has a branch passage 17 which is switched by a valve 16.
Is provided and the upper end of the branch passage 17 is connected to the upper connecting passage 15.
以上のような光酸化処理装置において、被処理水は給水
口２より処理槽１に供給され、ここで二酸化チタン等の
触媒微粒子18，…加えて、水中に懸濁させる。また、ヒ
ータ４により加温され、このような状態で紫外線ランプ
６に沿って流下する。この間、紫外線照射を受けるとと
もに、二酸化チタンの微粒子の触媒作用により被処理水
中の有機物の分解、殺菌処理等が行なわれる。In the photooxidation treatment apparatus as described above, the water to be treated is supplied from the water supply port 2 to the treatment tank 1, where the catalyst fine particles 18 such as titanium dioxide are added and suspended in the water. In addition, the heater 4 heats it, and in such a state, it flows down along the ultraviolet lamp 6. During this period, while being irradiated with ultraviolet rays, the organic substances in the water to be treated are decomposed and sterilized by the catalytic action of fine particles of titanium dioxide.
処理された水は、圧送ポンプ14により下部連絡路13を通
って限外濾過膜９の通水路８に送られる。通水路８に送
られた水の一部は限外濾過膜９の細孔9aを通って限外濾
過膜９の外側に脱出し、この間に水中に含まれる触媒微
粒子18，…は細孔9aに捕集される。限外濾過膜９を脱出
した水は排水管11を通って外部に排出される。The treated water is sent to the water passage 8 of the ultrafiltration membrane 9 through the lower communication passage 13 by the pressure feed pump 14. Part of the water sent to the water passage 8 escapes to the outside of the ultrafiltration membrane 9 through the pores 9a of the ultrafiltration membrane 9, and the catalyst fine particles 18, ... To be collected by. The water that has escaped from the ultrafiltration membrane 9 is discharged to the outside through the drain pipe 11.
また、通水路８に送られた水の残部は上部連絡路15を通
って処理槽１に戻される。なお、排水管11を通って外部
に排出される水の量と処理槽１に戻される水の量の比は
例えば、６：４とする。The rest of the water sent to the water passage 8 is returned to the treatment tank 1 through the upper connecting passage 15. The ratio of the amount of water discharged to the outside through the drain pipe 11 and the amount of water returned to the treatment tank 1 is, for example, 6: 4.
次に、洗浄水をポンプ12により限外濾過膜９の外側に圧
送する。この洗浄水は細孔9aを通って通水路８内に圧送
されるが、この間に細孔9aに捕集されていた触媒微粒子
18，…を解放する。このようにして触媒微粒子18，…を
含む洗浄水が通水路８に送られるが、この洗浄水はバル
ブ16を開いて分岐路17、上部連絡路15より処理槽１に戻
して再利用する。Next, the washing water is pumped to the outside of the ultrafiltration membrane 9 by the pump 12. The washing water is pressure-fed into the water passage 8 through the fine holes 9a, and the catalyst fine particles collected in the fine holes 9a during this period.
Release 18, ... In this way, the cleaning water containing the catalyst fine particles 18, ... Is sent to the water passage 8. The cleaning water is returned to the processing tank 1 through the branch passage 17 and the upper connecting passage 15 for reuse.
（発明の効果） 以上要するに、この発明によれば被処理水中に二酸化チ
タン等の微粒子を懸濁させて紫外線ランプの周囲を通過
させて紫外線照射処理を行なうに際して処理後の水中に
含まれる二酸化チタン等の微粒子を分離、回収が効率的
に行なうことができる。(Effects of the Invention) In summary, according to the present invention, titanium dioxide contained in water after treatment when fine particles of titanium dioxide or the like are suspended in water to be treated and passed around an ultraviolet lamp to perform ultraviolet irradiation treatment. It is possible to efficiently separate and collect fine particles such as.
第１図は、この発明の一実施例を示す概略図、第２図は
同上の要部拡大図である。 図中、１は処理槽、７は分離槽、９は限外濾過膜、18，
…は触媒微粒子。FIG. 1 is a schematic view showing an embodiment of the present invention, and FIG. 2 is an enlarged view of a main part of the same. In the figure, 1 is a treatment tank, 7 is a separation tank, 9 is an ultrafiltration membrane, 18,
... is catalyst fine particles.
Claims (2)
濾過膜を備えた分離槽を並設し、処理槽には触媒微粒子
を懸濁させた被処理水を送入し、同時に上記ランプより
紫外線を照射して触媒微粒子により被処理水を浄化、処
理し、次に被処理水を分離槽に送入し、該分離槽では被
処理水の一部を限外濾過膜を通して外部に排出し、その
間に被処理水中に含まれる触媒微粒子を限外濾過膜で捕
集し、また被処理水の残部はそのまま上記処理槽に戻
し、次に限外濾過膜には上記被処理水の通水方向とは逆
方向に洗浄水を通水し、限外濾過膜に捕集された触媒微
粒子を分離し、分離された触媒微粒子を含む洗浄水を上
記処理槽に戻すようにしたことを特徴とする光酸化処理
方法。1. A treatment tank in which an ultraviolet irradiation lamp is inserted and a separation tank provided with an ultrafiltration membrane are arranged side by side, and water to be treated in which catalyst fine particles are suspended is fed into the treatment tank, and at the same time, the lamp is treated. Irradiate more ultraviolet rays to purify and treat the water to be treated with catalyst fine particles, then feed the water to be separated into a separation tank, where a part of the water to be treated is discharged to the outside through an ultrafiltration membrane. In the meantime, the catalyst fine particles contained in the water to be treated are collected by the ultrafiltration membrane, and the rest of the water to be treated is returned to the treatment tank as it is, and then the ultrafiltration membrane is passed through the water to be treated. The washing water is passed in the direction opposite to the water direction, the catalyst fine particles collected in the ultrafiltration membrane are separated, and the washing water containing the separated catalyst fine particles is returned to the treatment tank. Photooxidation treatment method.
た紫外線照射ランプより照射される紫外線により浄化処
理する処理槽と該処理槽で処理された被処理水中に含ま
れる触媒微粒子を捕集して被処理水と分離する限外濾過
膜を備えた分離槽を並設し、該分離槽には被処理水の一
部を排出する排水路を設け、該排水路には洗浄水を被処
理水の通水方向とは逆方向に圧送して限外濾過膜に捕集
された触媒微粒子を解放する圧送ポンプを設け、また上
記処理槽の排水口と分離槽の給水口との間には圧送ポン
プによって上記処理槽で処理された被処理水を上記分離
槽に送り込む下部連絡路を設け、更に上記分離槽の上端
と処理槽の上端との間には被処理水の残部を限外濾過膜
より解放された触媒微粒子と共に上記処理槽に送り込む
上部連絡路を設けたことを特徴とする光酸化処理装置。2. A treatment tank for purifying the water to be treated containing the catalyst fine particles by ultraviolet rays emitted from an ultraviolet irradiation lamp having the water to be treated inserted therein, and the catalyst fine particles contained in the water to be treated treated in the treatment tank. A separation tank equipped with an ultrafiltration membrane that separates the treated water from the treated water is provided side by side, a drainage channel for discharging a part of the treated water is provided in the separation vessel, and the drainage channel is filled with the wash water. Provided is a pressure pump for releasing the catalyst fine particles collected in the ultrafiltration membrane by pressure-feeding the treated water in the opposite direction, and between the drainage port of the treatment tank and the water supply port of the separation tank. Is provided with a lower communication path for feeding the treated water treated in the treatment tank to the separation tank by a pressure pump, and the remaining portion of the treated water is limited between the upper end of the separation tank and the upper end of the treatment tank. Provided with an upper communication path that feeds the fine particles of catalyst released from the filtration membrane into the processing tank. Photooxidation process and wherein the.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1118581A JPH0630762B2 (en) | 1989-05-15 | 1989-05-15 | Photooxidation treatment method and apparatus thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1118581A JPH0630762B2 (en) | 1989-05-15 | 1989-05-15 | Photooxidation treatment method and apparatus thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH02298393A JPH02298393A (en) | 1990-12-10 |
| JPH0630762B2 true JPH0630762B2 (en) | 1994-04-27 |
Family
ID=14740136
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1118581A Expired - Fee Related JPH0630762B2 (en) | 1989-05-15 | 1989-05-15 | Photooxidation treatment method and apparatus thereof |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0630762B2 (en) |
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| JPH0523681A (en) * | 1991-07-17 | 1993-02-02 | Raizaa Kogyo Kk | Treatment and device for photooxidation |
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| GB9325051D0 (en) * | 1993-12-07 | 1994-02-02 | Tioxide Group Services Ltd | Titanium dioxide slurries |
| JP2003010653A (en) * | 2001-06-29 | 2003-01-14 | Ishikawajima Harima Heavy Ind Co Ltd | Water treater |
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| CN103241875B (en) * | 2013-04-18 | 2015-12-09 | 宁波大学 | The High-capacity waste water degradation reactor that photocatalyst interception reuse mechanism is improved again |
| US10280093B2 (en) | 2015-09-25 | 2019-05-07 | Panasonic Intellectual Property Management Co., Ltd. | Water treatment method, water treatment apparatus, and non-transitory computer-readable recording medium storing program |
| CN106957080B (en) | 2016-01-08 | 2022-03-22 | 松下知识产权经营株式会社 | Water treatment method and water treatment apparatus |
| CN107804938B (en) | 2016-09-08 | 2022-05-13 | 松下知识产权经营株式会社 | Liquid treatment method and liquid treatment apparatus |
| CN107804939B (en) * | 2016-09-09 | 2021-06-15 | 松下知识产权经营株式会社 | Method for controlling photocatalytic treatment device and photocatalytic treatment device |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5817658A (en) * | 1981-07-24 | 1983-02-01 | Hitachi Ltd | Semiconductor device |
| JPS60187322A (en) * | 1984-03-06 | 1985-09-24 | Toyota Central Res & Dev Lab Inc | Purifying method of waste |
| JPH0532238Y2 (en) * | 1986-05-26 | 1993-08-18 | ||
| JPS6342792A (en) * | 1986-08-07 | 1988-02-23 | Hosokawa Micron Kk | Method for cleaning liquid by utilizing titanium oxide |
-
1989
- 1989-05-15 JP JP1118581A patent/JPH0630762B2/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105984984A (en) * | 2015-01-30 | 2016-10-05 | 广东工业大学 | Dye wastewater deep purification and reuse system as well as method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH02298393A (en) | 1990-12-10 |
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