CN102515396A - Device for coupling photocatalytic oxidation and inorganic ceramic membrane separation - Google Patents
Device for coupling photocatalytic oxidation and inorganic ceramic membrane separation Download PDFInfo
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- CN102515396A CN102515396A CN2012100052191A CN201210005219A CN102515396A CN 102515396 A CN102515396 A CN 102515396A CN 2012100052191 A CN2012100052191 A CN 2012100052191A CN 201210005219 A CN201210005219 A CN 201210005219A CN 102515396 A CN102515396 A CN 102515396A
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- ceramic membrane
- inorganic ceramic
- membrane separation
- separation unit
- catalytic oxidation
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W10/00—Technologies for wastewater treatment
- Y02W10/30—Wastewater or sewage treatment systems using renewable energies
- Y02W10/37—Wastewater or sewage treatment systems using renewable energies using solar energy
Abstract
The invention discloses a device coupling photocatalytic oxidation and inorganic ceramic membrane separation. The device is characterized by comprising a suspended photo-catalytic reaction device (1) and an inorganic ceramic membrane separation device (2), wherein upper ends of the suspended photo-catalytic reaction device (1) and the inorganic ceramic membrane separation device (2) are connected with each other by using a pipe (4); and a high pressure diaphragm pump (3) is connected between lower ends of the suspended photo-catalytic reaction device (1) and the inorganic ceramic membrane separation device (2); integrated operation of the photocatalytic oxidation and the inorganic ceramic membrane separation can be realized so as to overcome the defect that photocatalyst is hard to be separated and recycled in a suspended photo-catalytic reactor.
Description
Technical field
The relevant device field that the invention belongs to the photocatalytic advanced oxidation technology and solve the photocatalyst Separation and Recovery relates to a kind of photochemical catalytic oxidation and inorganic ceramic membrane sepn coupled device.
Background technology
Since the seventies in last century, Japanese scientist finds semiconductor light-catalyst TiO
2Photoelectrochemistry can water of decomposition since, photocatalysis technology has obtained the extensive concern of various countries' researchers.This technology not only is devoted to water of decomposition and is obtained Hydrogen Energy; " Holy grail " in this photocatalysis technology of conversion of realization sun power-Hydrogen Energy, more practical photocatalysis technology is greatly developed and is utilized in fields such as automatically cleaning, purifying air, sterilization and disinfection, wastewater treatments simultaneously.As a kind of new high-level oxidation technology; Photocatalysis oxidation technique is the photocatalyst of research and development with visible light-responded, high-quantum efficiency and high stability on the one hand actively; Be devoted to develop light-catalyzed reaction system efficiently on the other hand, in the hope of the high efficiency separation recovery of the optimization of matching that realizes light source and reactor drum and distribution, catalyzer etc.
Light-catalyzed reaction system mainly is made up of light source, photo catalysis reactor, photocatalyst and utility appliance.Can wherein photo catalysis reactor be the place that light-catalyzed reaction is carried out, to light-catalyzed reaction the decisive influence factor arranged efficiently.It is different to press the photocatalyst its load form, can it mainly be divided into loading type photo catalysis reactor and floated photo catalysis reactor.The loading type reactor drum has photocatalyst and is easy to isolating advantage, because its granules of catalyst is able to fix, its mass-transfer efficiency is very limited.Floated photo catalysis reactor has advantages such as mass-transfer efficiency height, light source utilization ratio be good, in the research of photo catalysis reactor, receives much concern in recent years.But floated photo catalysis reactor exists the defective that photocatalyst is difficult to Separation and Recovery.
Summary of the invention
The objective of the invention is to provide a kind of device of photocatalyst Separation and Recovery for floated photo catalysis reactor; Design corresponding inorganic ceramic membrane module; And inorganic ceramic membrane sepn and photo catalysis reactor be coupled; Can realize that the collaborative of photocatalysis degradation organic contaminant and photocatalyst Separation and Recovery carries out, adopt the online pneumatic jack water of air to recoil and alleviate inner with the surperficial film pollution of inorganic ceramic film fenestra, improve separation efficiency.
Technical scheme of the present invention: a kind of photochemical catalytic oxidation and inorganic ceramic membrane sepn coupled device; Comprise floated photocatalytic reaction device and inorganic ceramic membrane separation unit; Connect through pipe fitting between floated photocatalytic reaction device and the inorganic ceramic membrane separation unit upper end, between its lower end, be connected with high-pressure diaphragm pump.
Described a kind of photochemical catalytic oxidation and inorganic ceramic membrane sepn skill coupled device are connected with air on the inorganic ceramic membrane separation unit.
Described a kind of photochemical catalytic oxidation and inorganic ceramic membrane sepn coupled device are connected with vortex digital display under meter and oil-filled anti-shock pressure meter between high-pressure diaphragm pump and inorganic ceramic membrane separation unit lower end.
Described a kind of photochemical catalytic oxidation and inorganic ceramic membrane sepn coupled device, the inorganic ceramic membrane separation unit comprises seal sleeve and putamina, through being threaded, film seal of tube circle is arranged between seal sleeve and putamina between seal sleeve and the putamina.
The beneficial effect that the present invention reaches:
Can realize the operation of photochemical catalytic oxidation and inorganic ceramic film isolation integral, overcome floated photo catalysis reactor and existed the defective that photocatalyst is difficult to Separation and Recovery.
Connect through pipe fitting between floated photocatalytic reaction device and the inorganic ceramic membrane separation unit upper end; Between its lower end, be connected with high-pressure diaphragm pump, through high-pressure diaphragm pump, reaction mixture passed through the inorganic ceramic membrane separation unit after reaction is accomplished; Water molecules and small-molecule substance less than membrane pore size are penetrated into the ceramic-film tube outside and per-meate side; And be trapped greater than granules of catalyst and other macromolecular substance of membrane pore size, in trapped fluid back light catalyticreactor, reach separation fully to photocatalyst with this; Realized the recycle of catalyzer, solved floated photo catalysis reactor and existed the defective that photocatalyst is difficult to Separation and Recovery; The present invention adopts the cross flow filter mode; Purpose is can wash away ceramic membrane surface through cross-flow tangential feed liquid current; Take away the photocatalyst granular that a part is removed easily, can play the pollution of ceramic membrane like this and slow down effect attached to ceramic membrane surface.
Light-catalyzed reaction feed liquid completely gets into the inorganic ceramic film separating system, and high-pressure diaphragm pump can provide different separating pressures, and vortex digital display under meter can be measured the instantaneous delivery and the integrated flow of penetrating fluid and trapped fluid easily; Utilize oil-filled anti-shock pressure meter can conveniently record the separating pressure of inorganic ceramic film, and can prevent to have reduced manometric reading error because of the caused tensimeter vibrations of the slight vibrations of surge pump.
Through being threaded, utilizing the screw thread preliminary tension that ceramic-film tube is sealed, and reach the excellent sealing of ceramic membrane tripping device shell side and tube side between seal sleeve and the putamina with this.
Online pneumatic jack water recoiling device mainly is made up of air; Because the surfactivity of nanocatalyst is higher, its absorption to ceramic-film tube is stopped up serious, can cause the decline of permeate flux of ceramic membrane; Therefore when beginning to carry out catalyst separating, just open the water recoil of online high pressure gas top; High pressure gas promote penetrating fluid and oppositely get into the ceramic-film tube endoporus, make the side of holding back of returning ceramic-film tube attached to the granules of catalyst on its endoporus, and are trapped liquid again and wash away and take back in the reactor drum.Reach slowing down with this to the ceramic membrane pollution; Through control recoil pressure, recoil frequency, recoil time and recoil cycle, reach the best that ceramic membrane is polluted and slow down effect.
The inorganic ceramic membrane separation unit can adopt hyperchannel and multitube ceramic membrane element, reaches good separating effect.
Description of drawings
Fig. 1 is photocatalytic advanced oxidation and inorganic ceramic film separation coupling device synoptic diagram.
Fig. 2 is an inorganic ceramic membrane separation unit sectional view.
Embodiment
The present invention further describes through following specific examples, but does not limit the present invention.
This floated photo catalysis reactor can adopt immerseable inner cover photo catalysis reactor; The light source fluorescent tube places the silica glass cold-trap inner; The bottom is lined with asbestos gauge and prevents that the high temperature fluorescent tube from directly contacting with quartzy cold-trap, and reactor head is provided with thief hole, trapped fluid refluxes and takes over and the gas distributor adapter, and quartzy cold-trap both sides respectively are provided with cooling circulating water and take over; Control light source and photo catalysis reactor internal temperature through regulating the cooling-water flowing size; Gas distributor places photo catalysis reactor bottom, fully carries out aeration during light-catalyzed reaction, improves dissolved oxygen amount and the thorough mixing of catalyzer in the suspension-s with this.
Embodiment 1
Photochemical catalytic oxidation and inorganic ceramic membrane sepn coupled device; Comprise floated photocatalytic reaction device 1 and inorganic ceramic membrane separation unit 2; Floated photocatalytic reaction device comprises light source, cold-trap, immerseable inner cover photo catalysis reactor, cooling water inlet (outlet), magnetic stirring apparatus, light source power and air pump and gas distributor; Connect through stainless steel tube 4 between floated photocatalytic reaction device 1 and inorganic ceramic membrane separation unit 2 upper ends; Between its lower end, be connected with high-pressure diaphragm pump 3, on above two stainless steel tubes, be connected with valve; Be connected with air 5 on the inorganic ceramic membrane separation unit 2, between high-pressure diaphragm pump 3 and inorganic ceramic membrane separation unit 2 lower ends, be connected with vortex digital display under meter 6 and oil-filled anti-shock pressure meter 7; Inorganic ceramic membrane separation unit 2 comprises seal sleeve (8) and putamina 9; Between seal sleeve 8 and the putamina 9 through being threaded; Film seal of tube circle 10 is arranged between seal sleeve 8 and putamina 9; On putamina 9, also have penetrating fluid outlet 13 and recoil import 12, be connected to vortex digital display under meter and valve in penetrating fluid outlet 13.
Embodiment 2
With photochemical catalytic oxidation of the present invention and inorganic ceramic membrane sepn coupled device, the method for the concrete processing pollutent of bright for instance use apparatus of the present invention:
(1) at first a certain amount of organic pollutant sewage of putting into is joined floated photocatalytic reaction device 1, and add photocatalyst TiO
2, open magnetic stirring apparatus, air pump, make the photocatalyst thorough mixing even;
2, open water coolant, after water to be cooled is full of cold-trap and begins to cool down, open light source power again, carry out light-catalyzed reaction, treat that organic pollutant is degraded fully after, close light source power;
3, whether each valve in the inspection units is correctly opened; Then open pump; Make the sufficient suspension-s of degraded get into the inorganic ceramic membrane separation unit; Control the ceramic membrane separating pressure through regulating inorganic ceramic membrane separation unit outlet regulating opening of valves degree, make penetrating fluid pass through penetrating fluid and take over the outflow shell side, trapped fluid is back in the photo catalysis reactor;
4, treat to open air after trapped fluid is full of the ceramic film component shell side; Control its pressure; In catalyst separating, carry out online pneumatic jack water recoil; Control certain recoil pressure, recoil cycle and recoil time, slow down photocatalyst to the obstruction of ceramic-film tube endoporus and the absorption on top layer with this.
5, treat that catalyst separating is accomplished after, can add a certain amount of organic pollutant again and degrade next time, reach recycling with this to catalyzer.
Claims (4)
1. photochemical catalytic oxidation and inorganic ceramic membrane sepn coupled device; It is characterized in that: comprise floated photocatalytic reaction device (1) and inorganic ceramic membrane separation unit (2); Connect through pipe fitting (4) between floated photocatalytic reaction device (1) and inorganic ceramic membrane separation unit (2) upper end, between its lower end, be connected with high-pressure diaphragm pump (3).
2. a kind of photochemical catalytic oxidation according to claim 1 and inorganic ceramic membrane sepn skill coupled device is characterized in that: be connected with air (5) on the inorganic ceramic membrane separation unit (2).
3. a kind of photochemical catalytic oxidation according to claim 1 and inorganic ceramic membrane sepn coupled device is characterized in that: between high-pressure diaphragm pump (5) and inorganic ceramic membrane separation unit (2) lower end, be connected with vortex digital display under meter (6) and oil-filled anti-shock pressure meter (7).
4. a kind of photochemical catalytic oxidation according to claim 1 and inorganic ceramic membrane sepn coupled device; It is characterized in that: inorganic ceramic membrane separation unit (2) comprises seal sleeve (8) and putamina (9); Through being threaded, between seal sleeve (8) and putamina (9), film seal of tube circle (10) is arranged between seal sleeve (8) and the putamina (9).
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012100052191A CN102515396A (en) | 2012-01-10 | 2012-01-10 | Device for coupling photocatalytic oxidation and inorganic ceramic membrane separation |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2012100052191A CN102515396A (en) | 2012-01-10 | 2012-01-10 | Device for coupling photocatalytic oxidation and inorganic ceramic membrane separation |
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| CN102515396A true CN102515396A (en) | 2012-06-27 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103323564A (en) * | 2013-06-28 | 2013-09-25 | 北京大学 | Research device for generating singlet oxygen through natural organic matter, and control method of research device |
| CN104386849A (en) * | 2014-10-13 | 2015-03-04 | 同济大学 | Method for selectively degrading trace polycyclic aromatic hydrocarbon in water |
| CN105060391A (en) * | 2015-08-03 | 2015-11-18 | 河南科技大学 | Outer circulation photocatalysis hydrocyclone membrane separation coupling reactor for treating organic wastewater |
| CN107213752A (en) * | 2016-03-22 | 2017-09-29 | 天津工业大学 | The apparatus and method of liquid absorption cooperative with ultraviolet radiation catalytic degradation VOC |
| CN108238695A (en) * | 2016-12-23 | 2018-07-03 | 北京有色金属研究总院 | A kind of ultraviolet catalytic water treatment facilities using float type photochemical catalyst |
-
2012
- 2012-01-10 CN CN2012100052191A patent/CN102515396A/en active Pending
Non-Patent Citations (2)
| Title |
|---|
| 《第九届全国化学工艺学术年会论文集》 20050401 周民杰等 "无机膜-光催化集成反应器微滤TiO2悬浆体系的研究" 第1512-1516页 1-4 , * |
| 周民杰等: ""无机膜-光催化集成反应器微滤TiO2悬浆体系的研究"", 《第九届全国化学工艺学术年会论文集》 * |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103323564A (en) * | 2013-06-28 | 2013-09-25 | 北京大学 | Research device for generating singlet oxygen through natural organic matter, and control method of research device |
| CN103323564B (en) * | 2013-06-28 | 2015-01-14 | 北京大学 | Research device for generating singlet oxygen through natural organic matter, and control method of research device |
| CN104386849A (en) * | 2014-10-13 | 2015-03-04 | 同济大学 | Method for selectively degrading trace polycyclic aromatic hydrocarbon in water |
| CN104386849B (en) * | 2014-10-13 | 2016-07-13 | 同济大学 | A kind of method of micro polycyclic aromatic hydrocarbon in degradation selectivity water |
| CN105060391A (en) * | 2015-08-03 | 2015-11-18 | 河南科技大学 | Outer circulation photocatalysis hydrocyclone membrane separation coupling reactor for treating organic wastewater |
| CN107213752A (en) * | 2016-03-22 | 2017-09-29 | 天津工业大学 | The apparatus and method of liquid absorption cooperative with ultraviolet radiation catalytic degradation VOC |
| CN108238695A (en) * | 2016-12-23 | 2018-07-03 | 北京有色金属研究总院 | A kind of ultraviolet catalytic water treatment facilities using float type photochemical catalyst |
| CN108238695B (en) * | 2016-12-23 | 2020-09-15 | 有研工程技术研究院有限公司 | Ultraviolet light catalysis water treatment device applying floating type photocatalyst |
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Application publication date: 20120627 |